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ROOTECH ACCURA 2700 User Manual

Smart motor management system
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Summary of Contents for ROOTECH ACCURA 2700

  • Page 2 Integrated Incoming-Unit Module Integrated Incoming-Unit HMI Module Accura 2700M Accura 2700D Motor-Unit Protection Module Motor-Unit Protection & Control Module Accura 2750P-5A Accura 2750PC-5A Accura 2750P-30A Accura 2750PC-30A...
  • Page 3 Accura 2750P-100A Accura 2750PC-100A ACB-Unit Protection Module: Accura 2750P-ACB Accura 2750PC-160A ACB-Unit Protection & Control Module: Accura 2750PC-ACB Accura 2750PC-250A Accura 2750PC-400A...
  • Page 4 Terminal Block TM-PC-160A/250A TM-PC-400A Inverter-Unit Voltage Measurement[Control] Module Inverter-Unit Voltage Measurement Module Accura 2750INV Accura 2750VOL Motor-Unit Protection HMI Module Motor-Unit Protection & Control HMI Module Accura 2750D Accura 2750DC Accura 2750DC-AO/-RS485...
  • Page 5 Inverter-Unit Protection & Control HMI Module LOP Control Gateway Accura 2750DCI Accura 2750LCG LOP Control Module Inverter LOP Control Module LC Power Module Accura 2750LC Accura 2750LCI Accura 2750LC POW Unit-Socket Bridge-Socket Unit-Socket Bridge-Socket...

  • Page 6: Installation Considerations

    ◼ including removing PT fuses and shorting CT secondaries. Install the product in enclosures or a similar cabinet to prevent access to the terminal strips of the ◼ product after wiring. Page 6 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 7: About The Manual

    -Barrier-type digital input/output terminal: 0.90Nm (9 kgf∙cm = 0.66 lbf∙ft) About the Manual Rootech Inc. reserves the right to make changes in the product specifications shown in this User Guide without prior notice. We recommend that customers should obtain the latest information on product specifications and the manual before placing orders.

  • Page 8: Limitation Of Warranty

    Rootech Inc. reserves the right to determine, at its discretion, whether to repair or replace the product or issue a refund for the product when the warranty period has expired or issues are not covered by warranty terms and conditions.

  • Page 9: Standards Compliance

    No agency, corporate entity, or employee of Rootech Inc. or any other companies has the authority to amend, modify or extend the terms and conditions of this warranty in any way without express written authorization from Rootech Inc.

  • Page 10: Revision History

    Revision History Accura 2700/2750 User Guide Revision History The following versions of “Accura 2700/2750 User Guide” have been released. Revision Date Description Revision 1.00 May 20, 2016 The first issue Revision 1.10 June 8, 2017 Completed the first revision Revision 1.11...
  • Page 11 Added inverse time characteristics and setup items for the OCR of Accura 2750P[C] and Accura 2750P[C]-ACB models Added descriptions, images, and time tables related to inverse time characteristic curves Added specifications for external power supply to digital inputs of Accura 2750P ⓒ 2016 Rootech Inc. All Rights Reserved Page 11...

  • Page 12: Table Of Contents

    Power Supply/Ground Wiring ................................. 124 Step 5: Connection of Accura 2750INV and VOL ....................... 126 Voltage Wiring ......................................126 Digital Input and Output Wiring ..............................127 Power Supply/Ground Wiring ................................. 130 Page 12 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 13 Accura 2700D Interface ..................................158 Device Redundancy of Accura 2700M ............................159 Events .......................................... 159 Chapter 4 Accura 2700D ..............................160 Device Composition ................................. 160 Connection to Accura 2700M ............................162 ⓒ 2016 Rootech Inc. All Rights Reserved Page 13...
  • Page 14 Functions .................................... 229 Voltage Measurement ..................................229 Current Measurement ..................................229 Power and Energy Measurement..............................230 Motor Protection Function ................................230 ACB Protection Function ..................................231 Motor Control Function ..................................231 Page 14 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 15 Connection to Accura 2750P[C] ..............................249 Connection to Accura 2750INV/VOL ............................249 Connection between Accura 2750DC-RS485 and Accura 2750INV/VOL ..............250 Display Mode ..................................251 Screen Composition ..................................... 251 Summary Screen ....................................254 ⓒ 2016 Rootech Inc. All Rights Reserved Page 15...
  • Page 16 DO Tests for Accura 2750INV................................306 Chapter 8 Accura 2750LCG ............................307 Device Composition ................................. 307 Power Supply ......................................308 LED Status Indicator ..................................... 308 LCD Operation Mode ..................................309 Button Operation ....................................309 Page 16 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 17 Color Setup for Control Status ............................... 333 Buzzer Setup ......................................334 EVENT Mode ..................................335 Events of Accura 2750LC[I] ................................335 Chapter 10 Redundant Wiring/Operation ........................337 Device Redundancy ................................337 ⓒ 2016 Rootech Inc. All Rights Reserved Page 17...
  • Page 18 Descriptions of Terms ..................................366 Summary of Protection Relay Functions According to Motor Operating Status ..........371 Thermal Relay(THR) ....................................372 Over Current Relay(OCR) ................................... 377 Phase Out Current Relay (POCR) ..............................380 Page 18 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 19 Digital Inputs/Outputs ..................................420 Control Logic Function ..................................421 Overload Protection ..................................... 426 Direct Starter ......................................428 Reversing Starter ....................................430 2-Speed Starter ...................................... 432 2-Step Starter ......................................436 Custom Starter ......................................440 ⓒ 2016 Rootech Inc. All Rights Reserved Page 19...
  • Page 20 Event Storage Items ................................. 464 Event Property and Details for Each Event Type ......................467 Protection & Monitoring Events ..............................467 Motor Status Events ..................................... 470 Start Inhibit Events ....................................472 Page 20 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 21 Appendix D Setup Items ..............................530 Incoming-Unit Setup & Common Setup ........................530 Meter ........................................... 530 Communication ...................................... 531 Events .......................................... 532 User Interface ......................................533 Maintenance ......................................534 System ......................................... 535 Motor-Unit Setup ................................537 ⓒ 2016 Rootech Inc. All Rights Reserved Page 21...
  • Page 22 Timetable for the Thermal Relay (Motor Trip Class 25) ..................... 576 Characteristics Curve of the Thermal Relay (Motor Trip Class 30) ................577 Timetable for the Thermal Relay (Motor Trip Class 30) ..................... 578 Page 22 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 23 Characteristic Curve for IEC Curve C ............................589 Timetable for Long Time Inverse Relay ............................590 Characteristic Curve for Long Time Inverse Relay ........................ 591 Appendix H Ordering Information ..........................592 ⓒ 2016 Rootech Inc. All Rights Reserved Page 23...
  • Page 24 Fig 2.30 Accura 2750DCI Components ............................72 Fig 2.31 Accura 2750LCG Components ............................72 Fig 2.32 Accura 2750LC[I] Components ............................72 Fig 2.33 Accura 2750LC POW Components ..........................73 Fig 2.34 Unit-Socket Components ..............................73 Page 24 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 25 Fig 2.56 Accura 2750LC[I] ..................................84 Fig 2.57 Accura 2750LC POW................................85 Fig 2.58 Unit-Socket / Bridge-Socket .............................. 85 Fig 2.59 Accura 2700/2750 Installation Diagram ........................86 Fig 2.60 Mounting on the Panel ................................ 87 Fig 2.61 Mounting on the DIN Rail ..............................87 Fig 2.62 Panel Cutouts of Accura 2700M : Panel Mounting in the Left-to-Right Direction ........
  • Page 26 Fig 2.105 3-Phase 3-Wire(3P3W) Connection with 2 PTs/3 CTs ..................112 Fig 2.106 3-Phase 3-Wire(3P3W) Connection with 2 PTs/ 2 CTs ..................113 Fig 2.107 Accura 2700M Power Supply Wiring ........................114 Page 26 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 27 Fig 2.144 Connection of Accura 2750LC POW ........................145 Fig 2.145 Ethernet Ports on Accura 2700M for External Communication ..............146 Fig 2.146 External Communication of Accura 2700M via Ethernet (Daisy-Chain/Ring Topology) ....147 ⓒ 2016 Rootech Inc. All Rights Reserved Page 27...
  • Page 28 Fig 3.4 Connection between a Single Accura 2700M Module and Accura 2700D ..........153 Fig 3.5 Connection between two Accura 2700M Modules and Accura 2700D ............153 Fig 3.6 Connection among Accura 2700/2750/Unit-Socket ....................154 Fig 3.7 Connection between Accura 2700M and Accura 2750LCG ................155 Fig 4.1 Composition of Accura 2700D ............................
  • Page 29 Fig 7.1 Accura 2750D[C/CI] Device Composition ........................242 Fig 7.2 Screen indicating Refusal of Control Commands ....................244 Fig 7.3 AO Port ......................................247 Fig 7.4 RS485 Output Port ................................. 248 ⓒ 2016 Rootech Inc. All Rights Reserved Page 29...
  • Page 30 Fig 11.5 Vector Diagram indicating Total Apparent Power Calculated with Arithmetic Sum ......362 Fig 11.6 Power Sign and Phase Difference (Lead/Lag) ......................363 Fig 11.7 Demand Calculation ................................363 Fig 11.8 Harmonic Gain Graph ................................ 365 Page 30 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 31 Fig 13.15 Time Sequence Diagram of Reversing Starter (Control Direct Transition: Enabled) ......432 Fig 13.16 2-Speed Starter (Pole-changing Motor) Wiring Diagram ................433 Fig 13.17 2-Speed Starter(Dahlander Motor) Wiring Diagram ..................434 ⓒ 2016 Rootech Inc. All Rights Reserved Page 31...
  • Page 32 Fig G.2 Point of Transition to Definite Time Characteristic at 0.05 Seconds or Less ........... 583 Fig G.3 IEC Curve A ....................................585 Fig G.4 IEC Curve B ....................................587 Fig G.5 IEC Curve C ....................................589 Fig G.6 Long Time Inverse ................................. 591 Page 32 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 33: Chapter 1 Introduction

    Accura 2700/2750, the Smart Motor Management System, shares the voltage data sampled from the incoming unit of the Motor Control Center(MCC) by communicating with Accura 2750P[C], the individual motor-unit protection[control] module.
  • Page 34 Accura 2750INV/VOL module supports a separate RS-485 communication port to communicate with inverters that support RS-485 communication. Accura 2750INV module also provides additional digital I/O channels to enable a hardwired interface for the inverter. Page 34 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 35 As motors must operate and be managed continuously in the industrial field, it is crucial to maintain motor protection devices easily since they determine the power supply to motors. Accura 2700/2750 incorporates various functions and structural designs aimed at improving the convenience of maintenance. The features...
  • Page 36 The control logic editor offers editing, debugging, and simulation functions, making it easy to modify, save, and restore errors in the control logic. Page 36 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 37: Applications

    The Smart Motor Management System provides information on energy quality for each motor managed by the MCC. It enables a comprehensive enterprise-wide energy management system that connects the main switchgear with Accura meters(Accura 3300E, 3700) and the distribution panel with Accura 2300/2350 modules. ⓒ 2016 Rootech Inc. All Rights Reserved Page 37...

  • Page 38: Product Information

    Chapter 1 Introduction Accura 2700/2750 User Guide Product Information Accura 2700/2750 Modules Accura 2700/2750, the Smart Motor Management System can be composed of various kinds of modules as follows, including Accura 2700M. Module Description Accura 2700M Integrated Incoming-Unit Module Power measurements for the MCC’s incoming-unit and...

  • Page 39: Fig 2.37 Accura 2700D

    Accura 2700/2750 User Guide Chapter 1 Introduction The abbreviated names for Accura 2700/2750 modules are shown in the table below. Abbreviated Module Name Description A2700M Accura 2700M A2700D Accura 2700D A2750P Accura 2750P A2750P-ACB Accura 2750P-ACB A2750PC Accura 2750PC A2750PC-ACB...
  • Page 40 Measurement, protection, and control of motors for each unit Measures the power using the current data obtained by built-in Motor-Unit Protection & Control Module CTs and the voltage data received from Accura 2700M Page 40 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 41 In addition to the functions of Accura 2750DC, it supports RS-485 Control HMI Module [Option: RS485] communication Accura 2750DCI 2.7” Graphic FSTN LCD Inverter-Unit Protection & Control HMI Module Inverter-unit motor setup, status monitoring Inverter-unit motor control ⓒ 2016 Rootech Inc. All Rights Reserved Page 41...
  • Page 42 CTs. Ground current and residual ground current are not measured in the wiring mode using 2 external CTs. 2. It is not for fire monitoring, but for reference only. Page 42 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 43: Installation Example

    Motor-Unit Protection[Control] HMI Module Outside the withdrawable Unit-Socket Unit-Socket part of the motor unit Internal communication Dedicated communication Internal communication with Accura 2750P[C] External communication Ethernet/ RS-485 communication External communication with the host system ⓒ 2016 Rootech Inc. All Rights Reserved Page 43...

  • Page 44: Product Features

    Measurement Parameter Voltage Line-to-neutral voltage(per phase/average, maximum), Line-to-line voltage(each line-to-line/average, maximum) Fundamental RMS(per phase/average) Harmonics(per phase, up to the 50th order), THD(per phase, maximum) Vector diagram (phasor diagram) Page 44 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 45 Power supply through the communication cable Connection with Accura 2750LCG Communication Internal dedicated protocol 2 ports with the same function with the LOP (A2750LCG-1, A2750LCG-2) 2 ports Accura 2750LCG device redundancy ⓒ 2016 Rootech Inc. All Rights Reserved Page 45...
  • Page 46 3. A communication cable for the display module is provided when you order Accura 2700D. To connect Accura 2700M products in a redundant configuration, you should order an additional communication cable for the display module. Page 46 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 47 1. A communication cable for the display module is provided when you order Accura 2700D. To connect Accura 2700M products in a redundant configuration, you should order an additional communication cable for the display module. ⓒ 2016 Rootech Inc. All Rights Reserved Page 47...
  • Page 48 Demand(per phase/average), Peak demand(per phase/average) Crest Factor(per phase, maximum), K-factor(per phase, maximum) Residual Current Ground current(RMS value measured by the built-in ZCT) (instantaneous, maximum) Residual ground current(RMS value measured by summing three-phase currents) (instantaneous, maximum) Page 48 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 49 Connector type RJ45 connector Communication cable Ethernet cable Cat 5e FTP(F/UTP) Communication cable length Digital Input/Output Digital input Accura 2750P 1 channel (external power input) Accura 2750PC 10 channels (external power input) ⓒ 2016 Rootech Inc. All Rights Reserved Page 49...
  • Page 50 (using 3 external CTs). Additionally, ground current and residual ground current are not measured in a 2 CT connection(using 2 external CTs). 2. For an inverter unit, it communicates with Accura 2750DCI module via Accura 2750INV/VOL module. Page 50 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 51 1 channel (external power input) Accura 2750PC 10 channels (external power input) External power supply: AC 220V or AC/DC 110V selectable when ordering the device Digital output 3 Form-A channels, 1 Form-C channel ⓒ 2016 Rootech Inc. All Rights Reserved Page 51...

  • Page 52: Terminal Block

    Saves space when the MCCB of the motor-unit and the through-hole busbar are connected directly Model Description TM-PC-160A Terminal block for Accura 2750PC-160A TM-PC-250A Terminal block for Accura 2750PC-250A TM-PC-400A Terminal block for Accura 2750PC-400A Page 52 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 53 9 Form-A channels Accura 2750VOL 1 Form-C channel Power Supply Rated voltage (Us) 110 – 240V AC 50/60Hz, 110 – 300V DC Operating voltage range 0.8 x Us – 1.1 x Us ⓒ 2016 Rootech Inc. All Rights Reserved Page 53...
  • Page 54 Accura 2750DCI only 1 AUTO/MANUAL button AUTO/MANUAL Accura 2750DCI only Power Supply Power supply voltage Supplied from Accura 2750P[C] 1. Accura 2750DCI module communicates with Accura 2750PC module through Accura 2750INV/VOL module. Page 54 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 55 Rated voltage (Us) 110 – 240 V AC 50/60 Hz, 110 – 300 V DC Operating voltage range 0.8 x Us – 1.1 x Us Rated output voltage/power 24V DC / 50W ⓒ 2016 Rootech Inc. All Rights Reserved Page 55...
  • Page 56 Operating voltage range 0.8 x Us – 1.1 x Us Rated output voltage/power 24V DC / 20W Power Supply Power for Accura 2750LC[I] is supplied from Accura 2750LCG through a cable. Page 56 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 57 Sharing Accura 2750LC[I]’s network allows for the redundant wiring of Accura 2750LCG modules. Communication Port Number of ports 3 ports (CH_A, COM, CH_B) (CH_A/CH_B ports have the same functions) Connector type RJ45 connector ⓒ 2016 Rootech Inc. All Rights Reserved Page 57...

  • Page 58: Chapter 2 Installation

    Chapter 2 Installation Conditions for Installation Accura 2700/2750 should be mounted in a dry, dirt free location away from heat sources and high electric fields. To operate the product properly, you should consider the environmental conditions as below. Environmental Conditions...

  • Page 59: Product View

    Accura 2700/2750 User Guide Chapter 2 Installation Product View Fig 2.1 Accura 2700M Fig 2.2 Accura 2700D ⓒ 2016 Rootech Inc. All Rights Reserved Page 59...

  • Page 60: Fig 2.3 Accura 2750P-5A/30A/100A

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.3 Accura 2750P-5A/30A/100A Page 60 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 61: Fig 2.4 Accura 2750Pc-5A/30A/100A/Acb

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.4 Accura 2750PC-5A/30A/100A/ACB Fig 2.5 Accura 2750PC-160A/250A/400A ⓒ 2016 Rootech Inc. All Rights Reserved Page 61...

  • Page 62: Fig 2.6 Tm-Pc-160A/250A/400A

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.6 TM-PC-160A/250A/400A Fig 2.7 Accura 2750INV Fig 2.8 Accura 2750VOL Page 62 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 63: Fig 2.9 Accura 2750D

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.9 Accura 2750D Fig 2.10 Accura 2750DC ⓒ 2016 Rootech Inc. All Rights Reserved Page 63...

  • Page 64: Fig 2.11 Accura 2750Dc-Ao

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.11 Accura 2750DC-AO Fig 2.12 Accura 2750DC-RS485 Page 64 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 65: Fig 2.13 Accura 2750Dci

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.13 Accura 2750DCI Fig 2.14 Accura 2750LCG ⓒ 2016 Rootech Inc. All Rights Reserved Page 65...

  • Page 66: Fig 2.16 Accura 2750Lc Pow

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.15 Accura 2750LC[I] Fig 2.16 Accura 2750LC POW Page 66 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 67 Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.17 Unit-Socket Fig 2.18 Bridge-Socket ⓒ 2016 Rootech Inc. All Rights Reserved Page 67...

  • Page 68: Components

    Chapter 2 Installation Accura 2700/2750 User Guide Components Fig 2.19 Accura 2700M Components Fig 2.20 Accura 2700D Components Page 68 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 69: Fig 2.21 Accura 2750P-5A/30A/100A/Acb Components

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.21 Accura 2750P-5A/30A/100A/ACB Components Fig 2.22 Accura 2750PC-5A/30A/100A/ACB Components Fig 2.23 Accura 2750PC-160A/250A/400A Components ⓒ 2016 Rootech Inc. All Rights Reserved Page 69...

  • Page 70: Fig 2.24 Tm-Pc-160A/250A/400A Components For Accura 2750Pc-160A/250A/400A

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.24 TM-PC-160A/250A/400A Components for Accura 2750PC-160A/250A/400A Fig 2.25 Accura 2750INV Components Fig 2.26 Accura 2750VOL Components Page 70 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 71: Fig 2.27 Accura 2750D Components

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.27 Accura 2750D Components Fig 2.28 Accura 2750DC Components Fig 2.29 Accura 2750DC-AO/-RS485 Components ⓒ 2016 Rootech Inc. All Rights Reserved Page 71...

  • Page 72: Fig 2.30 Accura 2750Dci Components

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.30 Accura 2750DCI Components Fig 2.31 Accura 2750LCG Components Fig 2.32 Accura 2750LC[I] Components Page 72 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 73: Fig 2.33 Accura 2750Lc Pow Components

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.33 Components Accura 2750LC POW Fig 2.34 Unit-Socket Components Fig 2.35 Bridge-Socket Components ⓒ 2016 Rootech Inc. All Rights Reserved Page 73...
  • Page 74 1. When the FLC(Full Load Current) exceeds 100 A, use Accura 2750P-5A model with external CTs (the secondary rated current: 5 A). 2. When the FLC(Full Load Current) exceeds 400 A, use Accura 2750PC-5A model with external CTs (the secondary rated current: 5 A). Page 74 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 75 Accura 2700/2750 User Guide Chapter 2 Installation Accura 2700M Fig 2.36 Accura 2700M Accura 2700D Fig 2.37 Accura 2700D ⓒ 2016 Rootech Inc. All Rights Reserved Page 75...

  • Page 76: Fig 2.38 Accura 2750P-5A/30A/Acb

    Chapter 2 Installation Accura 2700/2750 User Guide Accura 2750P[C] Fig 2.38 Accura 2750P-5A/30A/ACB Fig 2.39 Accura 2750P-100A Page 76 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 77: Fig 2.40 Accura 2750Pc-5A/30A/Acb

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.40 Accura 2750PC-5A/30A/ACB Fig 2.41 Accura 2750PC-100A ⓒ 2016 Rootech Inc. All Rights Reserved Page 77...

  • Page 78: Fig 2.42 Accura 2750Pc-160A

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.42 Accura 2750PC-160A Fig 2.43 Accura 2750PC-250A Page 78 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 79: Fig 2.44 Accura 2750Pc-400A

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.44 Accura 2750PC-400A TM-PC Fig 2.45 TM-PC-160 Terminal Block for Accura 2750PC-160A ⓒ 2016 Rootech Inc. All Rights Reserved Page 79...

  • Page 80: Fig 2.46 Tm-Pc-250A Terminal Block For Accura 2750Pc-250A

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.46 TM-PC-250A Terminal Block for Accura 2750PC-250A Fig 2.47 TM-PC-400A Terminal Block Accura 2750PC-400A Page 80 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 81: Fig 2.49 Accura 2750Vol

    Accura 2700/2750 User Guide Chapter 2 Installation Accura 2750INV/VOL Fig 2.48 Accura 2750INV Fig 2.49 Accura 2750VOL ⓒ 2016 Rootech Inc. All Rights Reserved Page 81...

  • Page 82: Fig 2.51 Accura 2750Dc

    Chapter 2 Installation Accura 2700/2750 User Guide Accura 2750D[C/CI] Fig 2.50 Accura 2750D Fig 2.51 Accura 2750DC Fig 2.52 Accura 2750DC-AO Page 82 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 83: Fig 2.54 Accura 2750Dci

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.53 Accura 2750DC-RS485 Fig 2.54 Accura 2750DCI ⓒ 2016 Rootech Inc. All Rights Reserved Page 83...
  • Page 84 Chapter 2 Installation Accura 2700/2750 User Guide Accura 2750LCG Fig 2.55 Accura 2750LCG Accura 2750LC[I] Fig 2.56 Accura 2750LC[I] Page 84 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 85: Fig 2.57 Accura 2750Lc Pow

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.57 Accura 2750LC POW Unit-Socket / Bridge-Socket Fig 2.58 Unit-Socket / Bridge-Socket ⓒ 2016 Rootech Inc. All Rights Reserved Page 85...

  • Page 86: Installation Example

    LOP unit. Accura 2750LCG performs the communication relay function between Accura 2700M and Accura 2750LC[I]. Refer to the user guide for details on the voltage/current and DI/DO wiring methods of Accura 2700M and Accura 2750P[C]. Fig 2.59 Accura 2700/2750 Installation Diagram Ring Topology (Communication Redundancy) Ring Topology (Communication Redundancy) Page 86 ⓒ...

  • Page 87: Step 1: Panel Mounting

    You can secure the panel only onto the top hat din rail. When mounting Accura 2700M with the DIN rail vertically placed, it may slide downward, thus use a DIN rail stopper to prevent it. Fig 2.60 Mounting on the Panel Fig 2.61 Mounting on the DIN Rail ⓒ 2016 Rootech Inc. All Rights Reserved Page 87...

  • Page 88: Fig 2.62 Panel Cutouts Of Accura 2700M : Panel Mounting In The Left-To-Right Direction

    Accura 2700/2750 User Guide Fig 2.62 Panel Cutouts of Accura 2700M : Panel Mounting in the Left-to-Right Direction Fig 2.63 Panel Cutouts of Accura 2700M: Panel Mounting in the Top-to-Bottom Direction Page 88 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 89: Mounting Accura 2700D On The Panel

    TFT LCD screen of Accura 2700D. Fig 2.64 Panel Mounting of Accura 2700D Fig 2.65 Panel Cutouts of Accura 2700D ⓒ 2016 Rootech Inc. All Rights Reserved Page 89...

  • Page 90: Panel Mounting Of Accura 2750P[C]

    2750P[C] module snaps onto the Din rail. Fig 2.66 Panel Mounting of Accura 2750P[C]: Mounting on the Panel Fig 2.67 Panel Mounting of Accura 2750P[C]: Mounting on the DIN Rail Page 90 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 91: Fig 2.68 Mounting Accura 2750P-5A/30A/Acb On The Panel In Top-To-Bottom Direction

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.68 Mounting Accura 2750P-5A/30A/ACB on the Panel in Top-to-Bottom Direction Fig 2.69 Mounting Accura 2750P-5A/30A/ACB on the Panel in Left-to-Right Direction ⓒ 2016 Rootech Inc. All Rights Reserved Page 91...

  • Page 92: Fig 2.70 Mounting Accura 2750P-100A On The Panel In Top-To-Bottom Direction

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.70 Mounting Accura 2750P-100A on the Panel in Top-to-Bottom Direction Fig 2.71 Mounting Accura 2750P-100A on the Panel in Left-to-Right Direction Page 92 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 93: Fig 2.72 Mounting Accura 2750Pc-5A/30A/Acb On The Panel In Top-To-Bottom Direction

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.72 Mounting Accura 2750PC-5A/30A/ACB on the Panel in Top-to-Bottom Direction Fig 2.73 Mounting Accura 2750PC-5A/30A/ACB on the Panel in Left-to-Right Direction ⓒ 2016 Rootech Inc. All Rights Reserved Page 93...

  • Page 94: Fig 2.74 Mounting Accura 2750Pc-100A On The Panel In Top-To-Bottom Direction

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.74 Mounting Accura 2750PC-100A on the Panel in Top-to-Bottom Direction Fig 2.75 Mounting Accura 2750PC-100A on the Panel in in Left-to-Right Direction Page 94 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 95: Fig 2.76 Mounting Accura 2750Pc-160A/250A On The Panel In Top-To-Bottom Direction

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.76 Mounting Accura 2750PC-160A/250A on the Panel in Top-to-Bottom Direction Fig 2.77 Panel Mounting of TM-PC-160A/250A for Accura 2750PC-160A/250A ⓒ 2016 Rootech Inc. All Rights Reserved Page 95...

  • Page 96: Fig 2.78 Panel Mounting Of Accura 2750Pc-160A/250A : When Connecting Tm-Pc-160A/250A To Both

    Only to the Load Side of the Module after Connecting MCCB and the Terminal with Busbar (For details on the location of the MCCB’s mounting holes, refer to the manual about the relevant MCCB) Page 96 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 97: Fig 2.80 Panel Mounting Of Accura 2750Pc-400A: Mounting In Top-To-Bottom Direction

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.80 Panel Mounting of Accura 2750PC-400A: Mounting in Top-to-Bottom Direction Fig 2.81 Panel Mounting of TM-PC-400A for Accura 2750PC-400A ⓒ 2016 Rootech Inc. All Rights Reserved Page 97...

  • Page 98: Fig 2.82 Panel Mounting Of Accura 2750Pc-400A: When Connecting Tm-Pc-400A To Both Sides Of The

    Fig 2.83 Panel Mounting of Accura 2750PC-400A: When connecting TM-PC-400A only to the load side of the module after connecting MCCB and the terminal with busbar (For details on the location of the MCCB’s mounting holes, refer to the manual about the relevant MCCB Page 98 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 99: Panel Mounting Of Accura 2750Inv/Vol

    Accura 2750INV/VOL module snap onto the DIN rail. Fig 2.84 Panel Mounting of Accura 2750INV/VOL : Mounting on the Panel Fig 2.85 Panel Mounting of Accura 2750INV/VOL: Mounting on the DIN Rail ⓒ 2016 Rootech Inc. All Rights Reserved Page 99...

  • Page 100: Fig 2.86 Panel Mounting Of Accura 2750Inv: Mounting In Top-To-Bottom Direction

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.86 Panel Mounting of Accura 2750INV: Mounting in Top-to-Bottom Direction Fig 2.87 Panel Mounting of Accura 2750VOL: Mounting in Top-to-Bottom Direction Page 100 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 101: Panel Mounting Of Accura 2750D[C/Ci]

    The mounting wheel can be easily secured by hand. Applying excessive force with additional tools to turn the wheel may cause damage to the LCD screen of Accura 2750D[C/CI]. Fig 2.88 Panel Mounting of Accura 2750D Fig 2.89 Panel Cutouts of Accura 2750D ⓒ 2016 Rootech Inc. All Rights Reserved Page 101...

  • Page 102: Fig 2.90 Panel Mounting Of Accura 2750Dc

    Accura 2700/2750 User Guide Accura 2750DC-AO and Accura 2750DC-RS485 models have the same installation dimensions as Accura 2750DC module. Fig 2.90 Panel Mounting of Accura 2750DC Fig 2.91 Panel Cutout Dimensions of Accura 2750DC Page 102 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 103: Fig 2.92 Panel Mounting Of Accura 2750Dci

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.92 Panel Mounting of Accura 2750DCI Fig 2.93 Panel Cutout Dimensions of Accura 2750DCI ⓒ 2016 Rootech Inc. All Rights Reserved Page 103...

  • Page 104: Selecting The Location Of Lop To Install Accura 2750Lcg

    ② Hook the hinge end of the mounting clip to the edge of the DIN rail. Then push down the opposite latch end until both sides of Accura 2750LCG module snap onto the Din rail. Page 104 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 105: Fig 2.96 Mounting Accura 2750Lcg On The Din Rail

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.95 Mounting Accura 2750LCG on the Panel Fig 2.96 Mounting Accura 2750LCG on the DIN Rail Fig 2.97 Panel Cutout Dimensions of Accura 2750LCG ⓒ 2016 Rootech Inc. All Rights Reserved Page 105...

  • Page 106: Panel Mounting Of Accura 2750Lc[I]

    The mounting wheel can be easily secured by hand. Applying excessive force with additional tools to turn the mounting wheel may cause damage to the LCD screen of Accura 2750LC[I]. Fig 2.98 Panel Mounting of Accura 2750LC[I] Fig 2.99 Panel Cutout Dimensions of Accura 2750LC[I] Page 106 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 107: Panel Mounting Of Unit-Socket/Bridge-Socket

    ② Hook the hinge end of the mounting clip to the edge of the DIN rail. Then push down the opposite latch end until both sides of Accura 2750LCG module snap onto the Din rail. Fig 2.100 Mounting Unit-Socket/Bridge-Socket on the Panel ⓒ 2016 Rootech Inc. All Rights Reserved Page 107...

  • Page 108: Fig 2.101 Mounting Unit-Socket/Bridge-Socket On The Din Rail

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.101 Mounting Unit-Socket/Bridge-Socket on the DIN Rail Fig 2.102 Panel Cutout Dimensions of Unit-Socket/Bridge-Socket Page 108 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 109: Step 2: Accura 2700M Wiring

    520 V (Overvoltage category III, pollution degree 2) Rated impulse voltage (Uimp) 8 kV Frequency measuring range 42 – 69 Hz (50/60 Hz) Impedance 6 MΩ (L-N: V1/V2/V3–Vn) Burden 0.01 VA/phase @220 V ⓒ 2016 Rootech Inc. All Rights Reserved Page 109...

  • Page 110: Current Input

    > 3VA Note If the predicted peak load is much lower than the rated current of the CT, accuracy and resolution can be improved by using a CT with a lower rating. Page 110 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 111: Fig 2.104 3-Phase 4-Wire(3P4W) Connection With 3 Pts/3 Cts

    CT current exists, opening the secondary of the CT can cause serious accidents due to high-voltage leak. Fig 2.104 3-Phase 4-Wire(3P4W) Connection with 3 PTs/3 CTs Note Select 3P4W in the setup menu accessed through “Incoming-Unit>Meter>Voltage>Wiring Mode” . ⓒ 2016 Rootech Inc. All Rights Reserved Page 111...

  • Page 112: Fig 2.105 3-Phase 3-Wire(3P3W) Connection With 2 Pts/3 Cts

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.105 3-Phase 3-Wire(3P3W) Connection with 2 PTs/3 CTs Note Select 3P3W in the setup menu accessed through “Incoming-Unit>Meter>Voltage>Wiring Mode”. Page 112 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 113: Fig 2.106 3-Phase 3-Wire(3P3W) Connection With 2 Pts/ 2 Cts

    Accura 2700/2750 User Guide Chapter 2 Installation Fig 2.106 3-Phase 3-Wire(3P3W) Connection with 2 PTs/ 2 CTs Note Select 3P3W in the setup menu accessed through “Incoming-Unit>Meter>Voltage>Wiring Mode”. ⓒ 2016 Rootech Inc. All Rights Reserved Page 113...

  • Page 114: Power Supply/Ground Wiring

    Allowable instantaneous power Minimum 10 seconds (built-in supercapacitor) outage time 1. It refers to the maximum power consumption when Accura 2700M is connected to Accura 2700D and the supercapacitor is being charged. Page 114 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 115 Port name Connector type Screw-type terminal (pluggable) Wire specifications 2.1 – 3.5 mm (14 – 12 AWG) Note Wire the ground terminal of Accura 2700M to the earth ground of the panel. ⓒ 2016 Rootech Inc. All Rights Reserved Page 115...

  • Page 116: Step 3: Connection Between Accura 2700M And Accura 2700D

    Accura 2700D has two DISPLAY communication ports(DISPLAY1/DISPLAY2) to connect to two Accura 2700M modules at the same time for device redundancy of Accura 2700M. Fig 2.108 Accura 2700M Fig 2.109 Accura 2700D Rear Page 116 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 117: Fig 2.110 Connection Between 1 Accura 2700M Module And 2700D

    Accura 2700M products in a redundant configuration, you should order an additional communication cable for the display module. Fig 2.110 Connection between 1 Accura 2700M Module and 2700D Fig 2.111 Connection between 2 Accura 2700M Modules and Accura 2700D ⓒ 2016 Rootech Inc. All Rights Reserved Page 117...

  • Page 118: Step 4: Accura 2750P[C] Wiring

    Hole Wiring: 3-Phase Hole Wiring: 1-Phase The following table shows information on the power cables that pass through the holes of Accura 2750P[C]. Item Description Power cables passing through the holes Insulated cables Page 118 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 119: Fig 2.114 Accura 2750P[C]-5A/2750P[C]-Acb Current Through-Hole Wiring With External Cts

    CTs with the secondary rating of 1A/5A, and the models that can be used with external CTs include Accura 2750P[C]-5A and Accura 2750P[C]-ACB models. Fig 2.114 Accura 2750P[C]-5A/2750P[C]-ACB Current Through-Hole Wiring with External CTs ⓒ 2016 Rootech Inc. All Rights Reserved Page 119...

  • Page 120: Digital Input/Output Wiring

    Channel 4 Port name , DO Ground 1. DO , DO , and DO refer to the separate ground terminals for each channel. 2. Channel 4 is a Form-C contact point. Page 120 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 121: Fig 2.116 Accura 2750Pc-5A/30A/100A/Acb Digital Input/Output Channels

    1. 10 channels are divided into 2 groups by each of 5 channels. 2. Ground terminals 1DI and 2DI are the common terminals for each group and insulated between the groups. ⓒ 2016 Rootech Inc. All Rights Reserved Page 121...

  • Page 122: Fig 2.118 Digital Inputs

    0 – 140 Vac 0 – 60 Vac/Vdc High voltage range 165 – 240 Vac 85 – 130 Vac/Vdc 1. Accura 2750P supports only one digital input channel. Fig 2.118 Digital Inputs Page 122 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 123: Digital Output Specifications

    It is recommended to install a surge suppressor(clamp diode, varistor or RC-snubber) close to the digital output contacts to prevent the surge voltage generated when turning off the contacts from exceeding the maximum allowable voltage for the contacts. ⓒ 2016 Rootech Inc. All Rights Reserved Page 123...

  • Page 124: Power Supply/Ground Wiring

    Chapter 2 Installation Accura 2700/2750 User Guide Power Supply/Ground Wiring Fig 2.121 Accura 2750P Power Supply/Ground Wiring Fig 2.122 Accura 2750PC-5A/30A/100A/ACB Power Supply/Ground Wiring Page 124 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 125: Fig 2.123 Accura 2750Pc-160A/250A/400A Power Supply/Ground Wiring

    Port name Connector type Screw-type terminal (pluggable) Wire specifications 2.1 – 3.5 mm (14 – 12 AWG) Note Wire the ground terminal of Accura 2750PC to the earth ground of the panel. ⓒ 2016 Rootech Inc. All Rights Reserved Page 125...

  • Page 126: Step 5: Connection Of Accura 2750Inv And Vol

    Connector type Screw-type terminal (pluggable) Wire specifications 0.21 – 3.5 mm (24 – 12AWG) Measuring range AC 5 – 300 V direct L-N (Line-to-Neutral) AC 9 – 520 V direct L-L (Line-to-Line) Page 126 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 127: Digital Input And Output Wiring

    1. Accura 2750PC module has 10 digital input channels consisting of channels in Group 1 and 2. 5 digital input channels of Accura 2750INV module belong to Group 3. 2. 3DI the ground terminal is a common terminal in Group 3. ⓒ 2016 Rootech Inc. All Rights Reserved Page 127...

  • Page 128: Digital Output Channels

    Accura 2750VOL Digital Output Channels Fig 2.126 Accura 2750VOL Digital Output Channels 1 Digital Output Channel Channel 5 Port name , DO Ground 1. Channel 5 of Accura 2750VOL features a Form-C contact point. Page 128 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 129 It is recommended to install a surge suppressor(clamp diode, varistor or RC-snubber) close to digital output contacts to prevent the surge voltage generated when turning off the contacts from exceeding the maximum allowable voltage for the contacts. ⓒ 2016 Rootech Inc. All Rights Reserved Page 129...

  • Page 130: Power Supply/Ground Wiring

    Accura 2750INV module uses power generated by receiving AC/DC input power. It also supplies power to Accura 2750DCI through communication cables. Accura 2750VOL module operates by receiving power from Accura 2750PC module. Fig 2.127 Accura 2750INV Power Supply/Ground Wiring Page 130 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 131 Port name Connector type Screw-type terminal (pluggable) Wire specifications 2.1 – 3.5 mm (14 – 12 AWG) Note Wire the ground terminal of Accura 2750INV to the earth ground of the panel. ⓒ 2016 Rootech Inc. All Rights Reserved Page 131...

  • Page 132: Connection With The Inverter Via Rs-485 Communication

    UL2919 RS-485 1P[2P] 24AWG Communication cable length Maximum 1,219 m (4,000 ft) 1. At 115,200 bps, a master can communicate with up to 16 slave devices at a maximum distance of 600 m. Page 132 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 133: Step 6: Connection Between Accura 2750P[C] And Accura 2750D[C]

    Port Accura 2750P[C] 1 port (DISPLAY) Accura 2750D[C] 2 ports (DISPLAY1, DISPLAY2) Protocol Internal protocol Communication cable Ethernet cable Cat 5e FTP(F/UTP) Communication cable length 1. FTP(F/UTP): Foiled Shielded Twisted Pairs ⓒ 2016 Rootech Inc. All Rights Reserved Page 133...

  • Page 134: Fig 2.131 Connection Between Accura 2750P And 2750D

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.131 Connection between Accura 2750P and 2750D Fig 2.132 Connection between Accura 2750PC-5A/30A/100A/ACB and 2750DC Fig 2.133 Connection between Accura 2750PC-160A/250A/400A and 2750DC Page 134 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 135: Step 6-1: Connecting Accura 2750Pc To Accura 2750Inv/Vol

    Accura 2750PC module is indirectly connected to Accura 2750DCI through Accura 2750INV/VOL module. Fig 2.134 DISPLAY Port on Accura 2750PC Fig 2.135 Accura 2750PC Port on Accura 2750INV/VOL ⓒ 2016 Rootech Inc. All Rights Reserved Page 135...

  • Page 136: Fig 2.136 Connection Between Accura 2750Pc And 2750Inv

    Fig 2.136 Connection between Accura 2750PC and 2750INV Item Description Port name Accura 2750PC DISPLAY Accura 2750INV/VOL A2750PC Protocol Internal protocol Communication cable Ethernet cable Cat 5e FTP(F/UTP) Communication cable length Maximum 3 m Page 136 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 137: Step 6-2: Connecting Accura 2750Inv/Vol To Accura 2750Dci

    Accura 2750PC module is indirectly connected with Accura 2750DCI through Accura 2750INV/VOL module. Fig 2.137 Accura 2750DCI Port on Accura 2750INV/VOL Fig 2.138 DISPLAY Port on Accura 2750DCI ⓒ 2016 Rootech Inc. All Rights Reserved Page 137...

  • Page 138: Fig 2.139 Connection Among Accura 2750Pc, 2750Inv, And 2750Dci

    Accura 2750INV/VOL 1 port (DISPLAY A2750DCI) Accura 2750DCI 2 ports (DISPLAY1, DISPLAY2) Protocol Internal protocol Communication cable Ethernet cable Cat 5e FTP(F/UTP) Communication cable length 1. FTP(F/UTP): Foiled Shielded Twisted Pairs Page 138 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 139: Step 7: Connection Between Accura 2700M And Accura 2750P[C]

    1. FTP(Foiled Shielded Twisted Pairs), STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs) 2. If the total cable length in a ring topology does not exceed 120 m, the maximum allowable cable length between units is 20 m. ⓒ 2016 Rootech Inc. All Rights Reserved Page 139...

  • Page 140: Fig 2.140 Connection Among Accura 2700M/2750P[C]/Unit-Socket

    Chapter 2 Installation Accura 2700/2750 User Guide Fig 2.140 Connection among Accura 2700M/2750P[C]/Unit-Socket Ring Topology ( Communication Redundancy) Page 140 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 141: Step 8: Connection Of Accura 2750Lcg

    When you cannot connect the ground cable of the MCC to Accura 2750LCG in the LOP, you can also connect the ground of the LOP to the ground terminal of Accura 2750LCG. Fig 2.141 Accura 2750LCG Power Supply/Ground Wiring ⓒ 2016 Rootech Inc. All Rights Reserved Page 141...

  • Page 142: Power Supply Wiring

    Connect the ground terminal of Accura 2750LCG to the earth ground of the MCC panel. If it is difficult to make the connection, connect the ground terminal to the earth ground of the LOP. Page 142 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 143: Step 9: Connecting Accura 2700M To Accura 2750Lcg

    Connects to 2 Accura 2750LCG modules using 2 ports Connector type RJ45 connector Protocol Internal protocol Communication cable Ethernet cable Cat 5e FTP, STP, SFTP Communication cable length Maximum 300 m per port ⓒ 2016 Rootech Inc. All Rights Reserved Page 143...

  • Page 144: Step 10: Connecting Accura 2750Lcg To Accura 2750Lc[I]

    2. FTP(Foiled Shielded Twisted Pairs), STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs) 3. If the number of Accura 2750LC[I] modules per group exceeds 10, an additional Accura 2750LC POW module should be connected. Page 144 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 145: Step 11: Connection Of Accura 2750Lc Pow

    Peak 31 A, duration no more than 1.5 msec (AC 220 V) Peak 11 A, duration no more than 300 usec (DC 110 V) Capacity of the external input fuse 2 A, 500 V Allowable instantaneous power outage time Typ. 50 ms ⓒ 2016 Rootech Inc. All Rights Reserved Page 145...

  • Page 146: Step 12: External Communication Of Accura 2700M

    1. A built-in Ethernet switch enables daisy-chain Ethernet connections among Accura 2700M modules without the need for an additional external switch. 2. RSTP(Rapid Spanning Tree Protocol), IEEE 802.1D-2004 3. FTP(Foiled Shielded Twisted Pairs), STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs) Page 146 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 147: External Communication Using Rs-485 Ports

    Fig 2.146 External Communication of Accura 2700M via Ethernet (Daisy-Chain/Ring Topology) Daisy-Chain & Ring Topology (RSTP Protocol) External Communication using RS-485 Ports Fig 2.147 RS-485 Ports on Accura 2700M for External Communication ⓒ 2016 Rootech Inc. All Rights Reserved Page 147...

  • Page 148: Fig 2.148 External Communication Of Accura 2700M Via Rs-485 Connection

    Fig 2.148 External Communication of Accura 2700M via RS-485 Connection * The shield wire of the RS-485 communication cable should be grounded at only one point to minimize noise due to loop current. Page 148 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 149: Chapter 3 Accura 2700M

    HMI module, it allows users to monitor the operation state of all connected motors in front of the MCC panel. It is connected to the host system via Ethernet or RS-485 communication. Device Composition Fig 3.1 Composition of Accura 2700M ⓒ 2016 Rootech Inc. All Rights Reserved Page 149...

  • Page 150: Power Supply

    The ETHERNET1 and ETHERNET2 ports serve the same functions and allow for the host system’s redundancy by connecting to two host systems simultaneously. Refer to the 「Chapter 10: Redundancy Wiring/Operation > Device Redundancy」 for details regarding device redundancy . Page 150 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 151: Fig 3.2 External Communication Of Accura 2700M Via Ethernet (Daisy-Chain And Ring Topology)

    1. A built-in Ethernet switch enables daisy-chain Ethernet connections among Accura 2700M modules without the need for an additional external switch. 2. RSTP(Rapid Spanning Tree Protocol), IEEE 802.1D-2004 3. FTP(Foiled Shielded Twisted Pairs, STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs) ⓒ 2016 Rootech Inc. All Rights Reserved Page 151...

  • Page 152: Rs-485 Port For External Communication

    Maximum 1,219 m (4,000 ft) Maximum number of 32 per bus connectable devices 1. At 115,200 bps, a master can communicate with up to 16 slave devices at a maximum distance of 600 m. Page 152 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 153: Communication Port For Connection To The Hmi Display Module

    2. A communication cable for the display module is provided when you order Accura 2700D. To connect Accura 2700M products in a redundant configuration, you should order an additional communication cable for the display module. ⓒ 2016 Rootech Inc. All Rights Reserved Page 153...

  • Page 154: Communication Port For Connection To The Motor Unit

    Connecting two Accura 2700M modules to Accura 2750PC modules allows for redundant connections of 2700M modules. Refer to 「Chapter 10: Redundant Wiring/Operation」 for details regarding device redundancy. Fig 3.6 Connection among Accura 2700/2750/Unit-Socket Ring Topology (Communication Redundancy) Page 154...

  • Page 155: Communication Port For Connection To The Lop

    Accura 2750LCG modules by allowing connection of two Accura 2750LCG modules to Accura 2700M. Refer to 「Chapter 10: Redundant Wiring/Operation」 for details regarding device redundancy. Fig 3.7 Connection between Accura 2700M and Accura 2750LCG ⓒ 2016 Rootech Inc. All Rights Reserved Page 155...

  • Page 156: Voltage Terminal Block

    5 mA @ CT 1A (The minimum settable value is 5 mA.) Capacity of overcurrent 1,000 % of the rated current, for 1 second / 200 % of the rated current, continuous Burden Maximum 0.01 VA/phase @10 A Page 156 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 157: Led Status Indicators

    1. Press the button for 1 second and release it. 2. When an alarm event does not occur, it performs the TEST function. 3. When an alarm event occurs, it performs the RESET function. ⓒ 2016 Rootech Inc. All Rights Reserved Page 157...

  • Page 158: Functions

    Accura 2700M sends/receives measurement data, motor control commands, and operational status data from multiple Accura 2750LC[I] modules at the LOP(Local Operating Panel) through Accura 2750LCG and processes this information. Accura 2700D Interface Page 158 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 159: Device Redundancy Of Accura 2700M

    All events except alarm and caution events 1. Accura 2700M does not have the EVENT LED and provides event notifications through the EVENT LED of Accura 2700D. See 「Chapter 15 Events」 for more information on events. ⓒ 2016 Rootech Inc. All Rights Reserved Page 159...

  • Page 160: Chapter 4 Accura 2700D

    Checks and changes the setup item (motor FLC, protection relay, event, etc.) EVENT mode Displays the event log regarding the motor’s operational status, protective operations, etc. USB mode Changes control logic and records events through USB memory Page 160 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 161: Button Function

    Accura 2700M products in a redundant configuration, you should order an additional communication cable for the display module. USB Memory Port Item Description Port name Connector type USB 2.0 micro type B Function 1) Changes control logic 2) Records events ⓒ 2016 Rootech Inc. All Rights Reserved Page 161...

  • Page 162: Connection To Accura 2700M

    Fig 4.2 Connection between a Single Accura 2700M Module and Accura 2700D Connection to Two Accura 2700M Modules Fig 4.3 Connection between Two Accura 2700M Modules and Accura 2700D (Device Redundancy) Page 162 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 163: Top Screen

    Selects MCC or LOP connection status with the A2750PC/A2750LC button on the right side at the top of the menu bar MCC Draw Users can edit the size and location of the incoming unit and motor units according to different unit IDs. ⓒ 2016 Rootech Inc. All Rights Reserved Page 163...
  • Page 164 LOCK status signals of Accura 2700D and Accura 2750DC[I] modules. Touch the icon on the top menu bar to move to the Motor Lock Information screen. Safety LOCK = (Safety LOCK KEY on A2750LC[I]) | (A2700D Safety LOCK) | (A2750DC[I] Safety LOCK) Page 164 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 165 The motor is driven by the inverter(inverter mode), and it operates at the frequency controlled by frequency commands. Auto Frequency Bypass Operation The motor operates in bypass mode because of serious defects in the inverter. ⓒ 2016 Rootech Inc. All Rights Reserved Page 165...
  • Page 166 . Refer to 「Chapter 4 Accura 2700D > USB Screen with Details」 for detailed information. USB Icon Description USB memory Changes control logic and moves to the Event Recorder screen Page 166 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 167: Home Top Screen

    Also, when a new module is added, the newly added module blinks with + mark to indicate that it is added. Refer to 「Chapter 15 Events > Event Type > Module Management Events」 for details about the module management function. ⓒ 2016 Rootech Inc. All Rights Reserved Page 167...

  • Page 168: Setup Top Screen

    The connection status of the MCC or the LOP can be selected using the A2750PC/A2750LC buttons on the right side of the top menu bar. MCC Draw Users can edit the incoming unit and motor unit. Page 168 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 169: Fig 4.6 Setup Top Screen (Chain View)

    「Stored」 status, it changes to the 「Storing」 status, and the newly added module blinks with the + mark to indicate the addition of the module. Refer to 「Chapter 15 Events > Event Type > Module Management Events」 for details regarding the module management function. ⓒ 2016 Rootech Inc. All Rights Reserved Page 169...

  • Page 170: Fig 4.7 Setup Top Screen (Mcc Draw)

    After completing unit space setup, you should press the 「Unit Space Assignment」 button again to deactivate it. Page 170 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 171: Fig 4.8 Apply/Cancel Button For Edited Status

    The default password is set to 「0000」, and you can change it through the 「SETUP> Incoming-Unit> SYSTEM> Password」 menu. Fig 4.9 Password Entry Screen Fig 4.10 Warning Screen Requiring Confirmation ⓒ 2016 Rootech Inc. All Rights Reserved Page 171...

  • Page 172: Event Top Screen

    The MCC Draw screen displays detailed information about the incoming unit and motor unit of the MCC edited by users, allowing them to easily check the operational status of all motors. Page 172 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 173: Home(Display) Details Screen Composition

    Incoming-Unit Measurement Screen If you press the incoming-unit button on the HOME TOP screen, the summary measurement screen of the incoming unit appears. SUMMARY Measurement Screen Fig 4.13 Measurement & Alarm Reset Screen ⓒ 2016 Rootech Inc. All Rights Reserved Page 173...

  • Page 174: Fig 4.14 Line-To-Line Voltage Measurement Screen

    1. Harmonic analysis is conducted on line-to-line voltage in 3-phase 3-wire connections and on line-to-neutral voltage in 3-phase 4-wire connections. 2. Harmonics up to 50th order are measured without being attenuated. Refer to 「Chapter 11 Measurement/Monitoring Functions > Measurements > Harmonics Measurements」. Page 174 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 175: Fig 4.15 Phase Current Measurement Screen

    2. It is cleared by the command to clear the Max/Min value. 3. Harmonics up to the 50th order are measured without being attenuated. Refer to 「Chapter 11 Measurement/Monitoring Functions > Measurements > Harmonics Measurements」. ⓒ 2016 Rootech Inc. All Rights Reserved Page 175...

  • Page 176: Fig 4.16 Active Power Measurement Screen

    1. Refer to 「Chapter 11 Measurement/Monitoring Functions > Measurements > Power and Energy」 for details. 2. Net energy is calculated by subtracting the delivered energy from the received energy. 3. Sum energy is calculated by adding the delivered energy to the received energy. Page 176 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 177: Fig 4.17 Phasor Measurement Screen

    VAB. In a 3-phase 4-wire connection, it is indicated based on the phase of the line-to-neutral voltage VA. 3. Harmonics up to the 50th order are measured without being attenuated. Refer to 「Chapter 11 Measurement/Monitoring Functions > Measurements >Harmonics Measurements」. ⓒ 2016 Rootech Inc. All Rights Reserved Page 177...
  • Page 178 1. When operating a single Accura 2700M device, information is available only for the Active module. When Accura 2700M is set up with redundancy, information on both the Active and Standby modules is available. 2. It is available with A2750LCG module connected to the port. Page 178 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 179: Motor-Unit Measurement Screen

    「SETUP> Motor Unit > User Interface> Motor Control Button」 menu. The default settings for reconfirmation of the RUN command are activated, and the default settings for reconfirmation of the STOP command are disabled. ⓒ 2016 Rootech Inc. All Rights Reserved Page 179...

  • Page 180: Fig 4.20 Warning Screen For Reconfirming Run Command

    The command is Inhibited by the Try again after checking the connection status of disconnection of disconnection of Accura 2750LC[I] Accura 2750LC[I] module or deactivating the A2750LC[I] module or errors in communication. functions of the LOP. Page 180 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 181 History of the number of starts and operating time 4, 5 Limits on the number of starts in time windows Information on Safety LOCK Indicates the Safety LOCK function and status in three different positions ⓒ 2016 Rootech Inc. All Rights Reserved Page 181...

  • Page 182: Fig 4.23 Line-To-Line Voltage Measurement Screen

    3-phase 4-wire connection. 3. For general motor units, frequency is measured based on the incoming voltage. For a motor unit driven by an inverter, frequency is measured based on the inverter’s output voltage. Page 182 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 183 CTs(using 3 external CTs). Ground current and residual earth current are not measured in the wiring mode with 2 external CTs. 12. Not supported for single-phase motor setup ⓒ 2016 Rootech Inc. All Rights Reserved Page 183...

  • Page 184: Fig 4.25 Active Power Measurement Screen

    2. It is the maximum value of power measured over 1 cycle during the starting interval after clearing the value. 3. It is the maximum value of power measured over 1 second during the running interval after clearing the value. Page 184 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 185 4. Voltage harmonics up to the 50th order are measured without being attenuated. Current harmonics over 22nd order are measured after being attenuated. Refer to 「Chapter 11 Measurement/Monitoring Functions > Measurements > Harmonics Measurements」. ⓒ 2016 Rootech Inc. All Rights Reserved Page 185...

  • Page 186: System Information Screen

    - The latest capacitance and operation time (with timestamps) A2750P[C] Displays information on Accura 2750P[C] module A2750INV/VOL Displays information on Accura 2750INV/VOL module A2750D[C/CI] Displays information on Accura 2750D[C/CI] module A2750LC[I] Displays information on Accura 2750LC[I] module Page 186 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 187: Setup Details Screen

    Setup screen, you will be asked to enter a password. The default password is set to 「0000」 and you can change it through the 「SETUP > Incoming Unit > SYSTEM > Password」 menu. ⓒ 2016 Rootech Inc. All Rights Reserved Page 187...

  • Page 188: Fig 4.29 Password Entry Screen

    1.0 – 9999.9 A 5.0 A Minimum Secondary Current 1 – 100 mA 20 mA TDD Reference Selection 0: Reference Current(FLC of A2750P[C]) 0: Reference Current 1: Peak Demand Current (FLC of A2750P[C]) Page 188 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 189: Fig 4.31 Changed Items Displayed

    Apply or Cancel button. If you press the Apply button, a warning screen will appear to ask you to confirm the change. ⓒ 2016 Rootech Inc. All Rights Reserved Page 189...

  • Page 190: Fig 4.32 Warning Screen To Require Confirmation

    17: 255.255.128.0 24: 255.255.255.0 29: 255.255.255.248 30: 255.255.255.252 Gateway d1.d2.d3.d4 10.10.10.1 Modbus TCP Timeout 5 – 600 sec 600 sec Network Management Mode 0: Normal Switching 1: RSTP 1: RSTP 2: Teaming(Active-Backup) Page 190 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 191: Fig 4.34 Dip(Sag) Setup Screen

    Setup Item Range Default Dip(Sag) Function 0: Disable 0: Disable 1: Alarm 2: Latched Alarm Start Threshold 1.0 – 98.0 % 90.0 % End Threshold 2.0 – 99.0 % 92.0 % ⓒ 2016 Rootech Inc. All Rights Reserved Page 191...

  • Page 192: Fig 4.35 A2700M Led Setup Screen

    0.2 – 5.0 sec 1.0 sec ALARM LED On-Time 0.1 – 5.0 sec 1.0 sec FAULT LED Period 0.2 – 5.0 sec 1.0 sec FAULT LED On-Time 0.1 – 5.0 sec 1.0 sec Page 192 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 193: Maintenance Setup Screen

    1. It is the setup item commonly applied to the entire MCC unit(all motor units). MAINTENANCE Setup Screen The maintenance setup screen consists of Data Clear, Energy Set and Test Mode items. Refer to 「Chapter 14 Maintenance」 for details. Fig 4.36 Data Clear Setup Screen ⓒ 2016 Rootech Inc. All Rights Reserved Page 193...
  • Page 194 1. Synchronization for the demand interval and initialization of demand values are performed at the same time. 2. Refer to 「Chapter 14 Maintenance > Incoming Unit > Test Modes」 for details on test modes. Page 194 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 195: System Setup Screen

    -720 – 840 min 540 min Summer Time Function 0: Disable 0: Disable 1: Enable Start Month for Summer Time Valid Range: 1 – 12 3: March 1: January 2: February ... 12: December ⓒ 2016 Rootech Inc. All Rights Reserved Page 195...
  • Page 196 1. When Accura 2700M is set up with redundancy, only the current flow direction of the active module is configured. The current flow direction of the standby module is set to be opposite to the configured value of the active module. Page 196 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 197: Motor-Unit Setup Screen

    1.0 – 5.0 A 5.0 A Full Load Current (FLC) A2750P[C]-5A 0.5 – 5.0 A 5.0 A A2750P[C]-30A 3.0 – 30.0 A 30.0 A A2750P[C]-100A 10.0 – 100.0 A 100.0 A ⓒ 2016 Rootech Inc. All Rights Reserved Page 197...
  • Page 198 3. The operation of the Long Start Relay(LSR) is based on the Start-to-Run Condition. This condition does not apply in inverter mode where motors directly enter the running status without the starting status. Page 198 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 199 80 % TCU Fault Function 0: Disable 1: Enable 0: Disable Alarm Function 0: Disable 0: Disable 1: Alarm 2: Latched Alarm Fault Threshold 90 – 600 % FLC 200 % FLC ⓒ 2016 Rootech Inc. All Rights Reserved Page 199...
  • Page 200 1 – 500 sec 1 sec Alarm Threshold 100 – 800 % FLC 200 % FLC Alarm Time Delay 0.05 – 99.99 sec 0.05 sec Current Calculation Method 0: Current max=Max(IA,IB,IC) 0: Current max Page 200 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 201 I.OCR (ACB-Unit Model) Fault Function 0: Disable 1: Enable 0: Disable Fault Threshold 200 – 1600 % FLC 400 % FLC LT.OCR (ACB-Unit Model) Fault Function 0: Disable 1: Enable 0: Disable ⓒ 2016 Rootech Inc. All Rights Reserved Page 201...
  • Page 202 0.1 to 10 seconds using the additional definite time function. 8. It is set based on the rms value, and the relay operates based on instantaneous values obtained by multiplying the rms values by √ Page 202 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 203: Fig 4.40 Starter Mode Setup Screen

    Custom Starter Control Permission in Local Mode of the MCC and Local Mode of the LOP PC-DI Start 0: Disable 1: Enable 1: Enable PC-DI Stop 0: Disable 1: Enable 1: Enable ⓒ 2016 Rootech Inc. All Rights Reserved Page 203...
  • Page 204 1: Enable(Read Only) 1: Enable(Read Only) Motor Starting Limit Function 0: Disable 1: Enable 0: Disable Allowed Number of Starts 1 – 32 Time Window 1 – 1440 min 5 min Page 204 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 205 0: Disable 1: Enable 1: Enable Fault Function in Inverter Mode 0: Disable 0: Disable 1: Latched Alarm 2: Fault [Latched] Alarm Function in Inverter Mode 0: Disable 1: Alarm 0: Disable ⓒ 2016 Rootech Inc. All Rights Reserved Page 205...

  • Page 206: Fig 4.41 Digital Input Mapping Setup Screen

    DI 2 Function Mapping Same as DI 1 0: No Use DI 3 Function Mapping Same as DI 1 0: No Use DI 4 Function Mapping Same as DI 1 0: No Use Page 206 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 207 DO 3 Function Mapping Same as DO 1 0: No Use DO 4 Function Mapping Same as DO 1 0: No Use DO 5 Function Mapping Same as DO 1 0: No Use ⓒ 2016 Rootech Inc. All Rights Reserved Page 207...

  • Page 208: Fig 4.42 Run State Display Setup Screen

    The ranges and default values of the user interface setup item are as follows. Setup Item Range Default RUN State Display RUN State Display 0: Command Confirm 3: Auto 1: Status Feedback 2: Current Detect 3: Auto Mode Page 208 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 209 LCD Backlight Contrast 1 – 40 LCD Display Control Type 0: Self Control 1: Remote Control 0: Self Control Control Mode 0: Display Mode 0: Display Mode 1: Setup Mode 2: Event Mode ⓒ 2016 Rootech Inc. All Rights Reserved Page 209...
  • Page 210 After Remote Control setup is completed, no events occur regarding changing the Mode, Column and Page settings, and these setup data are not saved in non-volatile memory. Page 210 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 211: Fig 4.43 Data Clear Setup Screen

    Apparent Energy of Motor-Unit 0 – (2 -1) VAh Operation Limit Operating Time Limit Function 0: Disable 1: Caution 2: Alarm 0: Disable Limit Time 1 – 60000 hour 10000 hour ⓒ 2016 Rootech Inc. All Rights Reserved Page 211...

  • Page 212: Fig 4.44 Description Setup Screen

    30 Characters Null Motor Name 30 Characters Null Location 30 Characters Null Installation Location 1970 – 2999 0000 Installation Year 1 – 12 Installation Month 1 – 31 Description 30 Characters Null Page 212 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 213: Event Details Screen

    - A2700M module’s redundancy event - Self-diagnosis events of A2700M, A2700D, and A2750LCG modules CAPTURED Last 20 captured events of the incoming unit (stored in non-volatile memory) - Alarm events on monitoring voltage Dip/Swell ⓒ 2016 Rootech Inc. All Rights Reserved Page 213...

  • Page 214: Fig 4.45 All Events Screen

    The event waveform displays 64 samples per cycle and includes data for 36 cycles. The event waveform data are stored in volatile memory and will be lost when the power is turned off. Page 214 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 215: Motor-Unit Event Screen

    - Alarm event of the motor operation limit CAUTION Caution event in ALL EVENTS - Caution event of redundancy monitoring - Caution event of the motor operation limit - Caution event of the self-diagnosis ⓒ 2016 Rootech Inc. All Rights Reserved Page 215...

  • Page 216: Fig 4.48 Motor-Unit Event Screen

    1. Fig 4.48 Motor-Unit Event Screen Event data appearing on the main menu screen include data on individual modules along with All Devices. Page 216 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 217: Fig 4.49 Rms Trend Of The Motor Unit

    The RMS trend data include 36-point data consisting of 1-cycle RMS values for 36 cycles. Event RMS data are stored in volatile memory and will be lost when the power is turned off. Fig 4.49 RMS Trend of the Motor Unit ⓒ 2016 Rootech Inc. All Rights Reserved Page 217...

  • Page 218: Usb Details Screen

    「ID List」 button, the status of the control logic files in the folder is displayed for each ID on the 「ID List in Selected Folder」 screen. And then the 「Logic Write」 button is activated. The screen shows Page 218 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 219: Fig 4.51 Control Logic Write Screen

    If you press the 「Logic Write」 button, a warning screen appears asking for confirmation to proceed with the function. Once you press the OK button, control logic files will be sent. Fig 4.52 Warning Screen Asking for the Use of the Control Logic Write Function ⓒ 2016 Rootech Inc. All Rights Reserved Page 219...

  • Page 220: Fig 4.53 Warning Screen Indicating Mismatch Of The Mcc Names

    「Logic Write」, 「yyyymmdd_hhmmss」 is time data indicating the year, month, day, time, and second when you perform the function. Fig 4.54 Screen Indicating Control Logic Write Failed Page 220 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 221: Fig 4.55 Screen Indicating Control Logic Write And Read Succeeded

    The ID List button of the folder is automatically selected and displays the status of the control logic files read from the module with its background appearing in 「light blue」. ⓒ 2016 Rootech Inc. All Rights Reserved Page 221...

  • Page 222: Event Recorder Screen

    If you press the 「Module Select」 button to select the module to use to save events, the incoming-unit and the connected motor-unit ID appears activated. Select the unit to save events and press the OK button to save events of the selected unit. Page 222 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 223: Fig 4.59 Event Recorder Module Selection Screen

    The ranges and default values of the 「Record Time」 item are as follows. Setup Item Range Default Record Time Up to Now Up to Now 1 hour 6 hours 12 hours 1 day 7 days 15 days 30 days ⓒ 2016 Rootech Inc. All Rights Reserved Page 223...

  • Page 224: Chapter 5 Accura 2750P[C]

    110 – 240 V AC 50/60 Hz, 110 – 300 V DC Operating voltage range 0.8 x Us – 1.1 x Us Rated power consumption Maximum 13 VA(AC 220 V, 25°C) Page 224 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 225: Lcd Display

    Internal dedicated protocol Communication cable Ethernet cable Cat 5e FTP, STP, SFTP Communication cable length Maximum 3 m 1. FTP(Foiled Shielded Twisted Pairs), STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs) ⓒ 2016 Rootech Inc. All Rights Reserved Page 225...

  • Page 226: Display Port

    Accura 2750PC Input impedance 405 kΩ 225 kΩ Low voltage range 0 – 140 Vac 0 – 60 Vac/Vdc High voltage range 165 – 240 Vac 85 – 130 Vac/Vdc Page 226 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 227 Channel 4 Port name , DO Ground 1. DO , DO , DO , and DO are separate ground terminals for each channel. 2. Channel 4 is a Form-C contact point. ⓒ 2016 Rootech Inc. All Rights Reserved Page 227...

  • Page 228: Test/Reset Button

    Used to move to Setup mode and change settings 1. You can operate it with a short press for less than 0.5 seconds and a long press for 0.5 seconds. Refer to the button operation of each mode. Page 228 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 229: Functions

    1/100 of the rated current, and the maximum measured value is 8 times the rated current. For the measurement range from 1/50 of the rated current to the rated current, it provides accuracy class 0.5 according to IEC 61557-12. ⓒ 2016 Rootech Inc. All Rights Reserved Page 229...

  • Page 230: Power And Energy Measurement

    3. Unlike digital outputs for other protection relay functions, which are set to “fault”, digital outputs for the I.OCR and the MCS functions are set to “MCCB Trip”. Page 230 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 231: Acb Protection Function

    1) If the digital input channel of Accura 2750PC set to OFF Selection is energized, it is in the Control Off mode. 2) If there is no digital input channel set to OFF Selection or if the digital input channel set ⓒ 2016 Rootech Inc. All Rights Reserved Page 231...

  • Page 232: Events

    All events except for Fault, Alarm, and Caution events 1. Accura 2750P[C] has no EVENT LED and provides notifications through the EVENT LED of Accura 2700D and Accura 2750D[C/CI] modules. Refer to 「Chapter 15 Events」 for details regarding events. Page 232 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 233: Display Mode

    Accura 2750P[C]’s screens automatically rotate in the following sequence in Self-Rotation mode at a 2- second interval. Average Phase A Phase B Phase C Unit ID Current/Total Current/Power Current/Power Current/Power Power Three Phase Load Ratio ZCT Current Energy ⓒ 2016 Rootech Inc. All Rights Reserved Page 233...

  • Page 234: Setup Mode

    3. Press the button for 0.5 seconds and release it. Note If the button is not pressed during the timeout period for completing the setup (default 10 seconds) in setup mode, the screen automatically returns to display mode. Page 234 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 235: Unit Id Setup

    Standby ID. communication unavailable LCD Backlight Timeout Accura 2750P[C]’s LCD backlight timeout period is configured as follows. Setup Screen Setup Item Range Default LCD Backlight Timeout 10 – 999 sec 60 sec ⓒ 2016 Rootech Inc. All Rights Reserved Page 235...

  • Page 236: Setup Exit Timeout

    The LCD display control mode of Accura 2750P[C] is configured as follows. Setup Screen Setup Item Range Default Self-rotation / On 1. When Self-rotation mode is set to Off, the display screen is controlled remotely via communication. Page 236 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 237: Chapter 6 Accura 2750Inv/Vol

    Accura 2750DCI module through communication cables. Accura 2750VOL module operates by receiving power from Accura 2750PC module. Item Description Port name L+, N-, G (Earth Ground) Connector type Screw-type terminal (pluggable) Wire specification 2.1 – 3.5 mm (14 – 12 AWG) ⓒ 2016 Rootech Inc. All Rights Reserved Page 237...

  • Page 238: Led Indicators

    Accura 2750PC and Accura 2750DCI modules. Item Description Port name DISPLAY A2750DCI Connector type RJ45 connector Protocol Internal dedicated protocol Communication cable Ethernet cable Cat 5e FTP(F/UTP) Communication cable length 1. FTP(F/UTP): Foiled Shielded Twisted Pairs Page 238 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 239: Voltage Measurement

    Input type External power supply connection Maximum input voltage AC 240 V Low voltage range AC 0 –140 V High voltage range AC 165 – 240 V Minimum pulse width 50 msec ⓒ 2016 Rootech Inc. All Rights Reserved Page 239...
  • Page 240 2. It refers to a sperate ground terminal for each channel. Digital Output Channels of Accura 2750VOL Channel 5 Port name , DO Ground 1. Channel 5 of Accura 2750VOL is a Form-C contact point. Page 240 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 241: Device Connection

    When installing Accura 2750INV/VOL module to measure the inverter’s output voltage in a motor unit driven by the inverter, Accura 2750PC module is indirectly connected to Accura 2750DCI module through Accura 2750INV/VOL module. Fig 6.2 Connection among Accura 2750PC, Accura 2750INV, and Accura 2750DCI ⓒ 2016 Rootech Inc. All Rights Reserved Page 241...

  • Page 242: Chapter 7 Accura 2750D[C/Ci]

    AUTO/MANUAL buttons for inverter operation, as well as LED indicators on the front panel. Device Composition The device composition of Accura 2750D[C/CI] is as follows. Fig 7.1 Accura 2750D[C/CI] Device Composition Accura 2750D Accura 2750DC / 2750DC-AO / 2750DC-RS485 Accura 2750DCI Page 242 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 243: Lcd Display

    1. Refer to 「Chapter 13 Control Functions > Control Mode」 for details about control mode. 2. The data are only available in Accura 2750DCI module. Refer to 「Chapter 13 Control Functions > Inverter Operation Mode」 for details. ⓒ 2016 Rootech Inc. All Rights Reserved Page 243...

  • Page 244: Lcd Control Buttons

    Refer to 「Chapter 13 Control Functions > Refusal of Control Command」 for details. Fig 7.2 Screen indicating Refusal of Control Commands Page 244 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 245: Inverter Operation Mode Buttons

    Indicates the motor unit operates in bypass mode AUTO Long press Green Indicates that the motor operates at variable frequency in inverter mode MANUAL Long press Orange Indicates that the motor operates at preset frequency in inverter mode ⓒ 2016 Rootech Inc. All Rights Reserved Page 245...

  • Page 246: Test/Reset Buttons

    RJ45 connector Protocol Internal dedicated protocol Ethernet cable Cat 5e FTP(F/UTP) Communication cable Communication cable length Power supply Supplied from Accura 2750P[C] through the communication cable 1. FTP(F/UTP): Foiled Shielded Twisted Pairs Page 246 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 247: Accura 2750Dc-Ao: Ao Port

    0.21 – 3.5 mm (24 – 12 AWG) Current output DC 0 – 20 mA / DC 4 – 20 mA Load resistance Not more than 600 Ω Accuracy ±0.5% Full Scale ⓒ 2016 Rootech Inc. All Rights Reserved Page 247...

  • Page 248: Accura 2750Dc-Rs485: Rs-485 Output Port

    Fig 7.5 Connection of Accura 2750DC-RS485 Modules via Communication * The shield wire of the RS-485 communication cable should be grounded at only one point to minimize noise due to loop current. Page 248 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 249: Device Connections

    Connecting Accura 2750D to Accura 2750P Connecting Accura 2750DC to Accura 2750PC Connection to Accura 2750INV/VOL Fig 7.7 Connection to Accura 2750INV/VOL Connecting Accura 2750DCI to Accura 2750INV Connecting Accura 2750DCI to Accura 2750VOL ⓒ 2016 Rootech Inc. All Rights Reserved Page 249...

  • Page 250: Connection Between Accura 2750Dc-Rs485 And Accura 2750Inv/Vol

    Accura 2750PC to the host system. Fig 7.10 Connection between Accura 2750DC-RS485 and Accura 2750INV/VOL Connecting Accura 2750DC-RS485 to Connecting Accura 2750DC-RS485 to Accura 2750INV Accura 2750VOL Page 250 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 251: Display Mode

    Column 4 Column 5 Column 6 Column 7 Column 8 Summary Motor Voltage Current Power/Energy Fundamental Harmonics System Column 9 AO Current 1. This column is shown on Accura 2750DC-AO module. ⓒ 2016 Rootech Inc. All Rights Reserved Page 251...
  • Page 252 - Long press and hold the Enter button to enter the scroll mode and check contents with the up and down arrow buttons. - Long press the Enter button again to exit the scroll mode. Page 252 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 253 Short press Select the screen using the left, right, up and down arrow buttons. 1. Press the button and release it immediately. 2. Press the button for 0.5 seconds and release it. ⓒ 2016 Rootech Inc. All Rights Reserved Page 253...

  • Page 254: Summary Screen

    - If a caution/alarm event occurs, the screen automatically switches to the operation limit event screen and blinks - The screen indicating event status data blinks with reversed text and background colors (white text and figures on a black background). Page 254 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 255: Motor Screen

    Time to Restart The remaining time to restart after the TCU value falls below the set value 1. If the THR is not activated, it does not affect motor operation. ⓒ 2016 Rootech Inc. All Rights Reserved Page 255...

  • Page 256: Starting Current

    Starting time of the motor during the latest motor operation [sec] 1. Refer to 「Chapter 14 Maintenance > Motor Unit > Information on Motor Starting」. 2. The value is cleared using the command to clear motor history. Page 256 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 257 Total non-operating time, including the time the motor is stopped and not ready to start[min] Total Starting Time Total motor starting time[min] 1. It is cleared using the command to clear motor history. ⓒ 2016 Rootech Inc. All Rights Reserved Page 257...

  • Page 258: Rtd Temperature

    Temperature of the 2nd channel of the RTD module CH - 3 Temperature of the 3rd channel of the RTD module 1. It is available only when the RTD module is attached. Page 258 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 259: Voltage Screen

    1. It is the maximum RMS voltage value measured during a 1-second interval at the motor running state after clearing the max/min values. Line-to-Neutral Voltage Screen Description Line-to-Neutral Voltage per phase ⓒ 2016 Rootech Inc. All Rights Reserved Page 259...
  • Page 260 Max/Min value. The min frequency at the running interval 1. It is the max/min frequency value measured during a 1-second interval at the motor running state after clearing the max/min values. Page 260 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 261: Current Screen

    1. It is the maximum RMS current value measured over 1 cycle during the motor running interval after clearing the max/min values. Fundamental Current Screen Description RMS value of fundamental current ⓒ 2016 Rootech Inc. All Rights Reserved Page 261...
  • Page 262 Unbalance Screen Description Current unbalance NEMA Phase current unbalance according to the NEMA MG1 standard Zero Zero-sequence unbalance Nega Negative-sequence unbalance 1. Not supported for single-phase motor setup Page 262 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 263: Crest Factor

    The max current value is cleared with the command to clear the max/min value. 1. When using Accura 2750P[C]-5A and Accura 2750P[C]-ACB models with external CTs, the value is provided after ⓒ 2016 Rootech Inc. All Rights Reserved Page 263...

  • Page 264: Power/Energy Screen

    1. It is the maximum active power value measured over a 1 second interval during the running interval after clearing the max/min values. Reactive Power Screen Description Reactive power Depending on the magnitude of the reactive power, the unit of power automatically changes [VAR, kVAR]. Page 264 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 265: Apparent Power

    Maximum apparent power value during the motor starting interval Cleared with the command to clear the max/min value. 1. It is the maximum apparent power value measured for 1 cycle during the starting interval after clearing the max/min values ⓒ 2016 Rootech Inc. All Rights Reserved Page 265...

  • Page 266: Power Factor

    Supports 3 decimal places of resolution and displays only lower 9 digits including the decimal point 1. Wh is used as the unit of internally cumulative energy, supporting a 62-bit range and displaying only the lower 9 digits. Page 266 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 267: Fundamental Component Screen

    Fundamental Component Screen Current Phasor(RMS, Angle) Screen Description RMS current magnitude and phase angle of the fundamental current Current Phasor(Real, Imaginary) Screen Description Real components and imaginary components of the fundamental current ⓒ 2016 Rootech Inc. All Rights Reserved Page 267...
  • Page 268 1. It is cleared using the command to clear the max/min value. 2. Not supported for single-phase motor setup Voltage Phasor(RMS, Angle) Screen Description RMS voltage magnitude and phase angle of the fundamental voltage Page 268 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 269 Line-to-neutral voltage unbalance according to the NEMA MG1 standard Zero Zero-sequence voltage Nega Negative-sequence voltage 1. It is cleared by the command to clear the Max/Min value. 2. Not supported for single-phase motor setup ⓒ 2016 Rootech Inc. All Rights Reserved Page 269...

  • Page 270: Harmonics Screen

    Harmonic spectrum of C phase (ratio of the RMS value to the fundamental frequency) A-Phase Harmonics Data Screen Description Harmonic components of A phase (ratio of the RMS value to the fundamental frequency) Page 270 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 271 Harmonic components of C phase (ratio of the RMS value to the fundamental frequency) Screen Description Total harmonic distortion Max. THD Screen Description Maximum total harmonic distortion value Cleared with the command to clear the max/min value Screen Description Total demand distortion ⓒ 2016 Rootech Inc. All Rights Reserved Page 271...
  • Page 272 Maximum total demand distortion value Cleared with the command to clear the max/min value K-Factor Screen Description K-Factor Max. K-Factor Screen Description Maximum K-Factor value Cleared with the command to clear the max/min value Page 272 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 273: System Screen

    1. It is not for fire monitoring but for reference only. Supercapacitor Screen Description Initial capacity of the supercapacitor Initial operation time of the supercapacitor Latest capacity of the supercapacitor Latest operation time of the supercapacitor ⓒ 2016 Rootech Inc. All Rights Reserved Page 273...
  • Page 274 A2750D[C/CI] Information Screen Description Information on the A2750D[C/CI] module Serial Number Serial number of the module Firmware Version Firmware Version Bootloader Version Bootloader Version Hardware Revision Hardware Revision PCB Version PCB Version Page 274 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 275: Analog Output (Ao) Screen

    Screen Description Analog Output Current AO [d][d].[d][d] AO current 4-20 / 0-20 [mA] Avg Current [d][d][d][d] Average current of three phases measured at the motor [A] 1. d → decimal number ⓒ 2016 Rootech Inc. All Rights Reserved Page 275...

  • Page 276: Setup Mode

    Protection Control Digital I/O User Maintenance System AO Current Interface Column 8 RS-485 1. It is supported only on Accura 2750DC-AO module. 2. It is supported only on Accura 2750DC-RS-485 module. Page 276 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 277 - The popup screen that appears upon entering Selection or Edit mode in SETUP mode - Default password: 0000 - The password can be changed through the 「Accura 2700D> SETUP > Incoming Unit> System > Password」 menu. ⓒ 2016 Rootech Inc. All Rights Reserved Page 277...
  • Page 278 - Press and hold the ESC button to remain on the selection/edit mode screen. - Select Yes or No and press the Enter button to apply or cancel the change and return to Setup mode. Page 278 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 279: Button Operation

    4. Upon entering Edit mode, the password entry screen appears. The default value is 「0000」. You can change your password through the 「Accura 2700D > SETUP>Incoming Unit > System/Password」 setup menu. ⓒ 2016 Rootech Inc. All Rights Reserved Page 279...

  • Page 280: Meter Setup

    250 A 40.0 – 400 A for Accura 2750PC-400A 400 A 1. When using external CTs with Accura 2750P[C]-5A and Accura 2750P[C]-ACB models, it is set based on the input current Page 280 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 281: Current Direction

    Min ZCT Curr 1 – 100 mA 5 mA 1. When using external CTs with Accura 2750P[C]-5A and Accura 2750P[C]-ACB models, it is set based on the input current of Accura 2750 modules. ⓒ 2016 Rootech Inc. All Rights Reserved Page 281...

  • Page 282: Protection Setup

    Fault TMS 0.05 – 10.00 1.00 Alarm LV(Threshold) 90 – 600 % FLC 200 % FLC Alarm Time Delay 0.05 – 99.99 sec 0.05 sec Startup Blocking Disable / Enable Enable Page 282 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 283: Phase Sequence Relay

    100 % FLC Start-to-Run Time Delay 1 – 500 sec 10 sec 1. Settings of the LSR are non-applicable in inverter mode. Refer to the Start-to-Run Condition for Fault and Alarm settings. ⓒ 2016 Rootech Inc. All Rights Reserved Page 283...
  • Page 284 0.05 – 99.99 sec 0.05 sec Startup Blocking Disable / Enable Disable Startup Time Delay 0(Auto), 0.1 – 50.0 sec 0(Auto) 1. Ib indicates the rated current of each Accura 2750P[C] model. Page 284 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 285 Default LT.OCR: Long Time Over Current Relay Fault Disable / Enable Disable Fault LV(Threshold) 80 – 110 % FLC 100 % FLC Fault Time Delay 0.50 – 30.00 sec 0.50 sec ⓒ 2016 Rootech Inc. All Rights Reserved Page 285...

  • Page 286: Control Setup

    Supply Cable Control Direct Transition Disable / Enable Disable A2750DC[I] LOCK Unlock / Lock Unlock Emergency Start Function Screen Setup Item Range Default Emergency start Emergency Start Function Disable / Enable Disable Page 286 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 287 Default Limit on the number of starts in a specified time window Function Disable / Enable Disable Allowed Starts Number 1 – 32 Time Window 1 – 1440 min (24 hours) ⓒ 2016 Rootech Inc. All Rights Reserved Page 287...
  • Page 288 2. It sets the operating level of the protection relay function when the protection relay set to respond to Alarm or Latched Alarm event operates in inverter mode. Page 288 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 289: Digital Input/Output(Di/Do) Setup

    Same as DI 01 No Use Same as DI 01 No Use Same as DI 01 No Use Same as DI 01 No Use 1. Accura 2750P module supports only one DI channel. ⓒ 2016 Rootech Inc. All Rights Reserved Page 289...
  • Page 290 Default Polarity of the digital input Same as DI 01 Normal Same as DI 01 Normal Same as DI 01 Normal Same as DI 01 Normal Same as DI 01 Normal Page 290 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 291 No Use Same as DO1 No Use DO10 Same as DO1 No Use DO11 Same as DO1 No Use DO12 Same as DO1 No Use DO13 Same as DO1 No Use ⓒ 2016 Rootech Inc. All Rights Reserved Page 291...

  • Page 292: User Interface Setup

    1. The LED blinks when its On-time is shorter than the period during which the LED is turned on and off, and it remains continuously on when its On-time is equal to or longer than this period. Page 292 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 293 If it is equal to or longer than the period during which the device’s LED is turned on and off, it operates with continuous sound. A2750D[C/CI] Setup Exit Timeout Screen Setup Item Range Default Timeout period for exiting the setup mode Setup Exit Timeout 60 – 3600 sec 600 sec ⓒ 2016 Rootech Inc. All Rights Reserved Page 293...

  • Page 294: Maintenance Setup

    Operating Time Limit Screen Setup Item Range Default Limit for the total operating time of the motor Function Disable / Event / Alarm Disable Limit Time 1 – 60000 hour 10000 hours Page 294 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 295 Test Mode Setting Screen Setup Item Range Default Setup Items related to test mode operation Test Exit Timeout 1 – 10000 min 1 min DO Operation in Test Mode Disable / Enable Enable ⓒ 2016 Rootech Inc. All Rights Reserved Page 295...

  • Page 296: System Setup

    If you deactivate the safety lock function in the LOCK state, a status confirmation window and a progress confirmation window indicating the current LOCK status will appear. Status Confirmation Window Progress Confirmation Window Page 296 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 297: Analog Output(Ao) Setup

    Fig 7.11 AO Current for Motor Current AO Current 4-20 mA AO Current 0-20 mA 20 mA 20 mA 4 mA 0 mA motor motor current current (low) (high) (low) (high) ⓒ 2016 Rootech Inc. All Rights Reserved Page 297...

  • Page 298: Rs-485 Communication Setup

    Stop Bit 0: 1 bit 0: 1 bit 1: 2 bits 1. At 115,200 bps, a master can communicate with up to 16 slave devices at a maximum distance of 600 m. Page 298 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 299: Event Mode

    - The status indication bar on the last line displays Unit ID, Motor FLC, Motor Trip Class, and MCC control mode state. - If content appears on the last line because there is much content to display on the screen, the status indication bar disappears. ⓒ 2016 Rootech Inc. All Rights Reserved Page 299...

  • Page 300: Events Of A2750P[C]

    Records the operation of clearing data Event reset event Records event reset operations 1. It resets the status of events that occurred. This is different from 'Event Log Clear,' which is an option for clearing data. Page 300 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 301: Events Of A2750D[C/Ci]

    Start/Stop Digital Input/Output Records a change in the DI/DO status for the event start/stop control command Start inhibit event Records start inhibit status Motor status event Records a change in motor operating status ⓒ 2016 Rootech Inc. All Rights Reserved Page 301...

  • Page 302: Test Mode

    Tests are performed only on the 「Test mode screen」. Long press the 「TEST/RESET」 button of Accura 2750D[C/CI] to enter the test mode screen. Test mode is divided into Protection/DI/DO test modes in three columns. Page 302 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 303: Protection Test

    If you reset the Fault/Alarm status using the Event reset button, the test mode is reset, and the operation mode returns to normal status. Block Diagram for Protection Tests ⓒ 2016 Rootech Inc. All Rights Reserved Page 303...
  • Page 304 1. Except the normal test, the protection relay test virtually activates the Fault and Alarm settings, and other setup items operate based on the set values. 2. When performing the OCR test, the Fault time delay value is temporarily changed to 5 seconds. Page 304 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 305: Di Test

    Sets the DI status to De-energized virtually De-energized Energized Sets the DI status to Energized virtually Energized 1. Through the DI test, you can virtually set the digital input for each channel. ⓒ 2016 Rootech Inc. All Rights Reserved Page 305...

  • Page 306: Do Test

    1. Through the DO test, you can change the digital output contact to an open/closed status for each channel. 2. Channel 5 supported in Accura 2750VOL module is configured based on the Form A-type contact. Page 306 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 307: Chapter 8 Accura 2750Lcg

    - Can be connected to 15 Accura 2750LC[I] modules in a ring topology per group(support for communication redundancy) - Can communicate with up to 30 Accura 2750LC[I] modules through ports in two groups Fig 8.1 Accura 2750LCG Device Composition ⓒ 2016 Rootech Inc. All Rights Reserved Page 307...

  • Page 308: Power Supply

    - LC/LM-2 port: TX LED turns on, RX LED turns on (indicates connection status) Standby module: - LC/LM-1 port: TX LED turns off, RX LED turns off (indicates the connection status) Page 308 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 309: Lcd Operation Mode

    If the problem is fixed, the screen returns to the normal status display screen. Button Operation Accura 2750LCG has 1 button. Item Description Changes the screen manually by short-pressing the button ⓒ 2016 Rootech Inc. All Rights Reserved Page 309...

  • Page 310: Display Mode

    10: 10 Accura 2750LC[I] modules are connected to the port 2. Group 2 Status Screen Display Description P3.P4 Group 2: port 3 and port 4 Ring topology Connected to 7 Accura 2750LC[I] modules Page 310 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 311: Warning Indication

    Group 2: port 3 and port 4 Over The number of connected Accura 2750LC[I] modules exceeds 15. Automatic Detection Mode Indication Screen Display Description Detect Indicates the mode to determine the status of Accura 2750LC[I] modules Mode ⓒ 2016 Rootech Inc. All Rights Reserved Page 311...

  • Page 312: Communication With Accura 2700M

    2700M modules. One Accura 2700M module operates in Active mode, and the other Accura 2700M module operates in Standby mode. If the Active module does not operate normally, the Standby module switches to the Active module and performs communication with Accura 2750LCG. Page 312 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 313: Redundant Configuration Of Accura 2750Lcg Modules

    Accura 2750LC[I] and serves as a gateway. The two Accura 2750LCG modules share the communication network with Accura 2750LC[I] modules using the Bridge-Socket. Fig 8.4 Redundant Connection of Accura 2750LCG Modules Two Accura 2750LCG modules share the ring network with Accura 2750LC[I] modules. ⓒ 2016 Rootech Inc. All Rights Reserved Page 313...

  • Page 314: Fig 8.5 Connection Of Two Active Accura 2750Lcg Modules

    Fig 8.5 Connection of Two Active Accura 2750LCG Modules The two Accura 2750LCG modules have independent ring networks for connected Accura 2750LC[I] modules, without sharing the network. Page 314 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 315: Redundant Connection Of Accura 2700M/2750Lcg Modules

    2750LCG module operates in Standby mode. If the Active module does not operate normally, the Standby module switches to become active and performs normal device operation via communication. Fig 8.6 Redundant Configuration of Accura 2700M and 2750LCG Modules ⓒ 2016 Rootech Inc. All Rights Reserved Page 315...

  • Page 316: Communication With Accura 2750Lc[I]

    2. FTP(Foiled Shielded Twisted Pairs), STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs) 3. If the number of Accura 2750LC[I] modules per group exceeds 10, an additional Accura 2750LC POW module should be connected. Page 316 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 317: Communication Redundancy Of Accura 2750Lc[I] Modules

    Accura 2750LC POW module should be connected to the rear of Accura 2750LC[I] module installed at the farthest location. With the LC/LM-3, LC/LM-4 ports in Group 2, you can create the same as shown above. ring topology ⓒ 2016 Rootech Inc. All Rights Reserved Page 317...

  • Page 318: Device Redundancy Of Accura 2750Lcg Modules

    If the number of Accura 2750LC[I] modules exceeds 10 per group, an additional Accura 2750LC POW module should be connected to the rear of Accura 2750LC[I] module installed at the farthest location. Page 318 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 319: Chapter 9 Accura 2750Lc[I]

    2. It is supported only on Accura 2750LC module. Refer to 「Chapter 13 Control Functions > Control Mode」 for details. 3. It is supported only on Accura 2750LCI module. Refer to 「Chapter 13 Control Functions > Inverter Operation Mode」 for details. ⓒ 2016 Rootech Inc. All Rights Reserved Page 319...

  • Page 320: Power Supply

    However, if the number of Accura 2750LC[I] modules exceeds 10 per network group, an additional Accura 2750LC POW module should be connected to the rear of the Accura 2750LC[I] module to support up to 15 modules per group. Page 320 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 321: Led Status Indicator

    Used to move upward Down(⋁) Short press Used to move downward Right(>) Short press Used to move to the right Special function button Long press Used to perform the Escape function ⓒ 2016 Rootech Inc. All Rights Reserved Page 321...

  • Page 322: Safety Lock Key

    The default delay time is 1 second. Instructions for setting the delay time is shown in the table below. Setup Item Description Time delay of Time delay setup for motor control buttons A2750 button - A2700D>SETUP>Motor Unit>User Interface>Motor Control Button - A2750DC[I]>SETUP>User Interface>Motor Control Button Page 322 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 323 Safety LOCK status Protection: Fault Trip Fault status Inhibit: Starts Limit Inhibited by limits on the number of starts Inhibit: TCU Restart Level Inhibited by the TCU reset level of the THR ⓒ 2016 Rootech Inc. All Rights Reserved Page 323...

  • Page 324: Inverter Operation Button

    FAULT LED and the RESET button LED. If an Alarm event occurs in the motor unit, the ALARM LED is turned on to give the notification of the alarm status. If a self-diagnosis event occurs in Page 324 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 325 2. You can set the colors of the LEDs of the RESET button. Screen Blinking to Indicate TEST Mode Screen Indication Description Test Match Blinks for 5 seconds (1-second interval, 50 % duty cycle) ⓒ 2016 Rootech Inc. All Rights Reserved Page 325...

  • Page 326: Communication Redundancy Of Accura 2750Lcg/Lc[I] Modules

    With the LC/LM-3, LC/LM-4 ports in network group 2, you can create the same ring topology as shown above. Accura 2750LCG supports a ring topology of up to 15 Accura 2750LC[I] modules per group and a total of 30 Accura 2750LC[I] modules for two groups. Page 326 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 327: Connection Of Accura 2750Lc Pow, Expansion Module

    Peak 31 A, duration no more than 1.5 msec (AC 220 V) Peak 11 A, duration no more than 300 usec (DC 110 V) Capacity of the external 2 A, 500 V input fuse Allowable instantaneous Typ. 50 ms power outage time ⓒ 2016 Rootech Inc. All Rights Reserved Page 327...

  • Page 328: Display Mode

    Column 1 (METER) Column 2 (POWER SUPPLY) Column 3 (Unit ID) Page 328 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 329: Abnormal Status Screen

    Abnormal Status Screen Indication Description Id.01 Unit ID 01 Disconnected When it does not communicate with Accura 2700 Id.01 Unit ID 01 Not matched When there is no Accura 2750P[C] module corresponding to the ID 01 Id.01 Unit ID 01 Disabled When 「LOP Function」...

  • Page 330: Setup Mode

    Status Feedback, the LED operations might differ from the actual operating condition of the motor. 2. If the LED On-time is set to a value longer than the LED period, the LED remains on continuously. Page 330 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 331: Setup Items Only Configurable On Accura 2750Lc[I]

    Unit ID. It allows for easy maintenance. Accura 2750LC[I] module supports setup for the following items. Column 1 Column 2 Column 3 Unit ID Control State Color Buzzer ⓒ 2016 Rootech Inc. All Rights Reserved Page 331...

  • Page 332: Button Operation

    DISPLAY Mode 1. Press the button and release it immediately. 2. Press the button for 0.5 seconds and release it. 3. You can change the password via the 「Accura 2700D>SETUP>Incoming Unit>System>Password」 menu. Page 332 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 333: Password Entry Screen

    Color for RUN1 Control State Screen Setup Item Range Default run1 Red / Green / Orange Color for RUN2 Control State Screen Setup Item Range Default run2 Red / Green / Orange ⓒ 2016 Rootech Inc. All Rights Reserved Page 333...

  • Page 334: Buzzer Setup

    Screen Setup Item Range Default On-time 0.1 – 5.0 sec 0.5 sec 1. If the buzzer On-time is set to the value longer than the buzzer period, the buzzer operates continuously. Page 334 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 335: Event Mode

    The event occurs when the ENTER button is pressed for more than 30 seconds. Button RUN1 stuck The event occurs when the RUN1 button is pressed for more than 30 seconds. ⓒ 2016 Rootech Inc. All Rights Reserved Page 335...
  • Page 336 The event occurs when there is a checksum error in data saved in EEPROM. EEPROM Write Failure The event occurs when an EEPROM write error occurs. Supply Undervoltage The event occurs when the operating voltage of A2750LC[I] drops below 15 V. Page 336 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 337: Chapter 10 Redundant Wiring/Operation

    The Standby module also provides the self-diagnosis function to enable effective and timely maintenance of the system when an error related to redundancy occurs. ⓒ 2016 Rootech Inc. All Rights Reserved Page 337...
  • Page 338 Connection among the Host System, Accura 2700M, and Accura 2700D The following figure shows the connection among the host system, two Accura 2700M modules, and Accura 2700D. Fig 10.2 Connection among the Host System, Accura 2700M, and Accura 2700D Page 338 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 339 Fig 10.3 Voltage and Current Wiring of Accura 2700M 3P4W with 3 PTs and 3 CTs 3P3W with 2 PTs and 2 CTs Connection Connection ⓒ 2016 Rootech Inc. All Rights Reserved Page 339...
  • Page 340 Connection between Accura 2700M and Accura 2750LCG/LC[I] Two Accura 2700M modules are connected to Accura 2750LCG/2750LC[I] as shown below. Accura 2750LCG communicates with Accura 2700M module in Active mode and performs the data transmission function. Page 340 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 341: Fig 10.6 Connection Among Accura 2700M, Accura 2750P[C] And Accura 2750Lcg/Lc[I]

    MCC and Accura 2750LC[I] modules in the LOP via communication. It allows for interactive operations on control commands of the motor. Fig 10.6 Connection among Accura 2700M, Accura 2750P[C] and Accura 2750LCG/LC[I] ⓒ 2016 Rootech Inc. All Rights Reserved Page 341...

  • Page 342: Device Redundancy Of Accura 2750Lcg

    Connection between Two Accura 2700M and Two Accura 2750LCG Modules Two Accura 2700M modules are connected to two Accura 2750LCG modules as shown below. Fig 10.8 Connection between Two Accura 2700M and Two Accura 2750LCG Modules Page 342 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 343: Fig 10.10 Errors In Connecting Accura 2750Lcg To Accura 2750Lc[I] In Ring Topology

    LC/LM-2 or LC/LM-3 and LC/LM-4 ports). However, as illustrated below, a ring topology created using ports in the group 1 and 2 is not supported. Fig 10.10 Errors in Connecting Accura 2750LCG to Accura 2750LC[I] in Ring Topology ⓒ 2016 Rootech Inc. All Rights Reserved Page 343...

  • Page 344: Communication Redundancy

    Accura 2700M has two external Ethernet communication ports with the switch function. This enables a daisy-chain configuration of modules. Additionally, with the RSTP protocol, a ring topology supporting communication redundancy can be created. Fig 10.11 Communication Redundancy of Accura 2700M Modules Page 344 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 345: Communication Redundancy Of Accura 2750P[C] Modules

    Accura 2750LC[I] modules exceeds 10 per network group, additional Accura 2750LC POW module should be connected to the rear of Accura 2750LC[I] module located farthest from Accura 2750LCG module to support up to 15 modules per group. ⓒ 2016 Rootech Inc. All Rights Reserved Page 345...

  • Page 346: Fig 10.13 Communication Redundancy Of Accura 2750Lc[I]

    LC/LM-2 or LC/LM-3 and LC/LM-4 ports). However, as illustrated below, a ring topology created using ports in the group 1 and 2 is not supported. Fig 10.14 Error in Ring Topology between Accura 2750LCG and Accura 2750LC[I] Page 346 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 347: Chapter 11 Measurement/Monitoring Functions

    ▣ Zero-sequence Unbalance ▣ ▣ Negative-sequence Unbalance ▣ ▣ Fundamental Symmetrical Components ▣ ▣ Frequency ▣ ▣ ▣ Current Current ▣ ▣ ▣ Fundamental Current ▣ ▣ / TDD ▣ ▣ ⓒ 2016 Rootech Inc. All Rights Reserved Page 347...
  • Page 348 �� 2. TDD(Total Demand Distortion): �� �� However, �� can be set to either the rated current (default) or the peak demand current. �� �� �������� 3. Crest factor: �� ������ Page 348 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 349 1. Peak demand data are cleared using the command to clear the max/min value. 2. With the Demand Clear command, users can clear demand data on the incoming unit and all motor units of the MCC. ⓒ 2016 Rootech Inc. All Rights Reserved Page 349...

  • Page 350: Voltage Monitoring

    Level where a voltage swell ends 101.0 – 998.0 % Vref 108.0 % Vref Fig 11.2 Voltage Swell Detection Swell Start Swell End Threshold Threshold Reference Voltage Swell Start Swell End Page 350 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 351: Alarm Counter

    Cleared by the event reset command after the Alarm condition is cleared - A2700M> Reset button - A2700D>HOME>Incoming Unit>Summary>Measurement & Alarm Reset>RESET Clear Alarm Counter Cleared to 0 through SETUP mode - A2700D>SETUP>Incoming Unit>Maintenance>Data Clear>Fault/Alarm Counter Clear ⓒ 2016 Rootech Inc. All Rights Reserved Page 351...

  • Page 352: Motor Unit

    Received Reactive Energy ▣ VARh Delivered Reactive Energy ▣ VARh Sum Reactive Energy ▣ VARh Net Reactive Energy ▣ VARh Apparent Energy ▣ Demand Demand Current/ ▣ ▣ ▣ Peak Demand Current Page 352 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 353 1 cycle during the starting interval. Conversely, since the current magnitude does not change rapidly and remains stable during motor running, the device captures the maximum value measured over 1 second. ⓒ 2016 Rootech Inc. All Rights Reserved Page 353...
  • Page 354 - A2750D[C/CI]>SETUP>Maintenance>Data Clear>Max/Min Clear Energy Clear Clears energy values - A2700D>SETUP>Incoming Unit>Maintenance>Data Clear>Energy Clear - A2750D[C/CI]>SETUP>Maintenance>Data Clear>Energy Clear 1. Peak demand values are cleared using the command to clear the max/min values. Page 354 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 355: Measurements

    The zero voltage value of the virtual line- (N-terminal voltage ) to-neutral voltage is 0. Line-to-line voltage – V – V calculation – V – V – V – V Virtual neutral voltage ⓒ 2016 Rootech Inc. All Rights Reserved Page 355...
  • Page 356 VN: N-terminal voltage of connected power supply (2) Available Measurement Data Item L-N Voltage [rms] L-L Voltage [rms] Current [rms] Active Power Phase A * PF Phase B * PF Phase C * PF Average/Total Page 356 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 357: Three-Phase Current

    3 CT connection (using 3 external CTs) due to potential errors of external CTs. Additionally, ground current is not measured in a 2 CT connection (using 2 external CTs). ⓒ 2016 Rootech Inc. All Rights Reserved Page 357...

  • Page 358: Residual Ground Current Measured By Ct

    ������(��������) �������� ���� �������� �������������� ������������������ = × 100 [%] ������, ������ VLL,avg: Average line-to-line voltage Max(ΔVLL): Maximum voltage deviation from the average line-to-line voltage |line-to-line voltage - average voltage| Page 358 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 359: Phase Current Unbalance (Nema Mg1)

    − �� Zero-Sequence Unbalance It is the ratio of the magnitude of the zero-sequence component to that of the positive-sequence component. �� �������� − ���������������� ������������������ = × 100 [%] �� ⓒ 2016 Rootech Inc. All Rights Reserved Page 359...

  • Page 360: Calculation Of Power Per Phase

    For the sign of the reactive power, use the sign of the reactive power calculated using the fundamental calculation method mentioned above. where k=a,b,c �� = ±√�� − �� �� �� �� Page 360 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 361: Total Power Calculation

    The total apparent power is calculated as the magnitude of the vector sum of the total active power and the total reactive power. (Vector sum) �� = √�� + �� �� �� �� Fig 11.4 Vector Diagram indicating Total Apparent Power Calculated with Vector Sum | St | ⓒ 2016 Rootech Inc. All Rights Reserved Page 361...

  • Page 362: Power Factor(Pf) Measurement

    �� �� �� �� �� �� �� �� ���� ���� ���� ���� �� �� �� �� �� �� �� �� �� �� �� �� Page 362 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 363: Phase Angle (Lead/Lag) Measurements Of Current

    Avg 4.0 Avg 4.8 Avg 4.3 Avg 2.5 1:15 1:20 1:25 1:30 1:35 1:40 1:45 time (4.8+2.6+3.0)/3 (2.6+3.0+4.0)/3 (3.0+4.0+4.8)/3 (4.0+4.8+4.3)/3 (4.8+4.3+2.5)/3 demand output 3.47 3.20 3.93 4.37 3.87 (updated every T ⓒ 2016 Rootech Inc. All Rights Reserved Page 363...

  • Page 364: Energy

    Accura 2750P[C] module measures temperature with a STS21 temperature sensor installed on the side of the module. Trending the temperature of the motor unit enables detection of changes in motor temperature. Page 364 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 365: Harmonics Measurements

    0.0 % 0.103 0.897 89.7 % 1.000 0.000 0.0 % 0.034 0.966 96.6 % 1.000 0.000 0.0 % 0.007 0.993 99.3 % 1.000 0.000 0.0 % Fig 11.8 Harmonic Gain Graph ⓒ 2016 Rootech Inc. All Rights Reserved Page 365...

  • Page 366: Chapter 12 Protection Functions

    1. Ib indicates the rated current of each Accura 2750P[C] model. 2. The FLC can be set via Accura 2750P[C] measurement settings, and FLC2 can also be set in 2-speed starter mode. Page 366 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 367 - Latched Alarm: The alarm state is maintained until the event is reset even after alarm condition is cleared. Function availability Supported in all protection relay elements except for Current Phase Sequence Relay(PSR), Magnetic Contactor Supervision(MCS), and Instantaneous Overcurrent Relay(I.OCR) ⓒ 2016 Rootech Inc. All Rights Reserved Page 367...

  • Page 368: Fig 12.1 Timing Diagram For Occurrence Of Alarm And Fault Pickup

    Fig 12.2 Timing Diagram for Occurrence of Alarm and Fault Fault Threshold Fault Time Delay Alarm Threshold Alarm Time Delay pickup fault dropout alarm alarm clear Page 368 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 369: Fig 12.3 Definite Time Characteristics Of Protection Relays

    In this graph, if the measured value exceeds I and the delay time exceeds T, it indicates that a fault(or alarm) occurs. Fig 12.4 Definite Time Characteristic Curve No-Fault Fault (or Alarm) (or No-Alarm) No-Fault (or No-Alarm) ⓒ 2016 Rootech Inc. All Rights Reserved Page 369...

  • Page 370: Fig 12.5 Thermal Inverse Time Characteristic Curve

    1. Press the motor control button for longer than the time delay (default: 1 second) and release it. 2. It indicates the host system connected through remote network. 3. It is possible to perform the command only when the remote reset feature is enabled. Page 370 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 371: Summary Of Protection Relay Functions According To Motor Operating Status

    Ground fault Relay(CT) ● ● ▲ ● Under Current Relay ● Instantaneous Over ● I.OCR ● Current Relay MC supervision ● ● 1. The LSR does not operate in inverter mode. ⓒ 2016 Rootech Inc. All Rights Reserved Page 371...

  • Page 372: Thermal Relay(Thr)

    ) as displayed in the following equation. In order for this ����.������ formula to work, the previous current value should be six times greater than the motor heating time constant ��. �� ����.������ �� ������ ��∙ ������ Page 372 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 373: Fig 12.6 Change In The Tcu During Running/Stopping Intervals

    ��∙ ������ current, the TCU increases as time goes by. When the value exceeds 1, a fault occurs. If the motor starts, runs, and stops repeatedly, the TCU value changes as follows. ⓒ 2016 Rootech Inc. All Rights Reserved Page 373...

  • Page 374: Fig 12.7 Changes In The Tcu For Repeated Running/Stopping Intervals

    Used is 0(�� = 0). However, Hot Curve indicates to the value of the Fault operation time when the ������ previous Thermal Capacity Used is greater than 0(�� > 0). ������ Page 374 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 375 The motor can be restarted only when the TCU is below 10 – 100 % TCU 80 % TCU this level. 1. It is not supported when the inverter support setting is enabled. ⓒ 2016 Rootech Inc. All Rights Reserved Page 375...

  • Page 376: Fig 12.8 Function Block Diagram Of The Thermal Relay

    Chapter 12 Protection Functions Accura 2700/2750 User Guide The Function Block Diagram of the thermal relay is as follows. Fig 12.8 Function Block Diagram of the Thermal Relay ㄷ Page 376 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 377: Over Current Relay(Ocr)

    Characteristic Curve Characteristic Curve Parameters IEC Curve A (Standard Inverse) 0.14 0.02 IEC Curve B (Very Inverse) 13.5 1.00 IEC Curve C (Extremely Inverse) 80.0 2.00 LTI (Long Time Inverse) 120.0 1.00 ⓒ 2016 Rootech Inc. All Rights Reserved Page 377...
  • Page 378 Sets the blocking mode for protection operation during Disable / Enable Enable motor starting 1. It is recommended to set it to “Enable” for motor protection and set it to “Disable” for load protection. Page 378 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 379: Fig 12.9 Function Block Diagram Of The Ocr

    Accura 2700/2750 User Guide Chapter 12 Protection Functions The Function Block Diagram of the Over Current Relay is as follows. Fig 12.9 Function Block Diagram of the OCR ⓒ 2016 Rootech Inc. All Rights Reserved Page 379...

  • Page 380: Phase Out Current Relay (Pocr)

    - Zero-Sequence Unbalance: the ratio of the zero sequence current based on the magnitude of the positive sequence current Page 380 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 381: Fig 12.10 Function Block Diagram Of The Pocr

    Accura 2700/2750 User Guide Chapter 12 Protection Functions The Function Block Diagram of the Phase Out Current Relay is as follows. Fig 12.10 Function Block Diagram of the POCR ⓒ 2016 Rootech Inc. All Rights Reserved Page 381...

  • Page 382: Phase Sequence Relay (Psr)

    Disable / Enable Disable Status is in the RUN state Fixed Item Fixed Item Description Fixed Value Fault Threshold_curr Average RMS current of three-phase currents for determining a fault 20 % FLC condition Page 382 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 383: Fig 12.11 Function Block Diagram Of The Psr

    Accura 2700/2750 User Guide Chapter 12 Protection Functions The Function Block Diagram of the Phase Sequence Relay is as follows. Fig 12.11 Function Block Diagram of the PSR ⓒ 2016 Rootech Inc. All Rights Reserved Page 383...

  • Page 384: Unbalance Current Relay(Ubcr)

    Unbalance most from the average current compared to the average current of three-phase currents - Zero-sequence unbalance: the ratio of the zero-sequence current based on the magnitude of the positive-sequence current Page 384 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 385: Fig 12.12 Function Block Diagram Of The Ubcr

    Accura 2700/2750 User Guide Chapter 12 Protection Functions The Function Block Diagram of the Unbalance Current Relay is as follows. Fig 12.12 Function Block Diagram of the UBCR ⓒ 2016 Rootech Inc. All Rights Reserved Page 385...

  • Page 386: Long Start Relay(Lsr)

    Sets the level of current for determining a 100 – 800 % FLC 100 % FLC transition from the start state to the run state Start-to-Run Time Delay Maximum allowable startup time 1 – 500 sec 10 sec Page 386 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 387: Fig 12.13 Functional Block Diagram Of The Lsr

    Accura 2700/2750 User Guide Chapter 12 Protection Functions The Function Block Diagram of the Long Start Relay is as follows. Fig 12.13 Functional Block Diagram of the LSR ⓒ 2016 Rootech Inc. All Rights Reserved Page 387...

  • Page 388: Jam Relay

    Select the type of current to use for the relay function. Imax / Iavg Imax Method - Imax: the maximum current among three phase currents - Iavg: the average current of three phases Page 388 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 389: Fig 12.14 Function Block Diagram Of The Jam Relay

    Accura 2700/2750 User Guide Chapter 12 Protection Functions The Function Block Diagram of the Jam Relay is as follows. Fig 12.14 Function Block Diagram of the Jam Relay ⓒ 2016 Rootech Inc. All Rights Reserved Page 389...

  • Page 390: Ground Fault Relay With Zct

    -When it is set to 0(Auto), the protection relay function is interval /0.1 - 50.0 blocked throughout the entire starting interval Page 390 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 391: Fig 12.15 Function Block Diagram Of The Ground Fault Relay (Zct)

    Accura 2700/2750 User Guide Chapter 12 Protection Functions The Function Block Diagram of the Ground fault relay using the ZCT is as follows. Fig 12.15 Function Block Diagram of the Ground Fault Relay (ZCT) ⓒ 2016 Rootech Inc. All Rights Reserved Page 391...

  • Page 392: Ground Fault Relay With Ct

    -When it is set to 0(Auto), the protection relay function is 0.1 - 50.0 sec blocked at the entire starting interval. 1. Ib indicates the rated current of each Accura 2750P[C] model. Page 392 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 393: Fig 12.16 Function Block Diagram Of The Ground Fault Relay (Ct)

    Accura 2700/2750 User Guide Chapter 12 Protection Functions The Function Block Diagram of the Ground Fault Relay using CTs is as follows. Fig 12.16 Function Block Diagram of the Ground Fault Relay (CT) ⓒ 2016 Rootech Inc. All Rights Reserved Page 393...

  • Page 394: Under Current Relay(Ucr)

    10 – 90 % FLC 50 % FLC Alarm Time Delay Sets the time delay until an alarm occurs after the alarm 0.05 – 99.99 sec 0.05 sec threshold is exceeded Page 394 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 395: Fig 12.17 Function Block Diagram Of The Ucr

    Accura 2700/2750 User Guide Chapter 12 Protection Functions The Function Block Diagram of the Under Current Relay is as follows. Fig 12.17 Function Block Diagram of the UCR ⓒ 2016 Rootech Inc. All Rights Reserved Page 395...

  • Page 396: Instantaneous Over Current Relay(I.ocr)

    3. If it is set to 0, the DO set to 「MCCB Trip」 operates instantaneously within 50 ms. Using the definite time function, it can be set to a value from 0.1 seconds to 10.0 seconds. Page 396 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 397: Fig 12.18 Function Block Diagram Of The Iocr

    Accura 2700/2750 User Guide Chapter 12 Protection Functions The Function Block Diagram of the Instantaneous Overcurrent Relay is as follows. Fig 12.18 Function Block Diagram of the IOCR ⓒ 2016 Rootech Inc. All Rights Reserved Page 397...

  • Page 398: Magnetic Contactor Supervision(Mcs)

    5 – 120 % FLC 50 % FLC condition Fault Time Delay Sets the time delay until a fault occurs after 0.1 – 10.0 sec 2.0 sec the fault threshold is exceeded Page 398 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 399: Fig 12.19 Function Block Diagram Of The Mcs

    Accura 2700/2750 User Guide Chapter 12 Protection Functions The Function Block Diagram of the Magnetic Contactor Supervision function is as follows. Fig 12.19 Function Block Diagram of the MCS ⓒ 2016 Rootech Inc. All Rights Reserved Page 399...

  • Page 400: Acb Protection

    Operates based on the current values measured by the built-in ZCT of Accura 2750P[C]-ACB module Trip Signal of Protection Relay Description Fault Latch cleared by fault reset MHT(Magnetic Holding Trigger) Pulses with a pulse width of 12 ms Page 400 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 401: Descriptions Of Terms

    CT Primary Current the primary current of the external CT 1.0 – 9999.9 A 5.0 A CT Secondary Current the secondary current of the external CT 1.0 – 5.0 A 5.0 A ⓒ 2016 Rootech Inc. All Rights Reserved Page 401...

  • Page 402: Characteristics Of Long Time Over Current Relay(Lt.ocr)

    Fig 12.20 Block Diagram of Long Time Over Current Relay IDMT I > I Fault IDMT : Inverse Definite Minimum Time Fig 12.21 Characteristic Curve of Long Time Over Current Relay Cold Curve Page 402 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 403: Over Current Relay(Ocr)

    Characteristic Curve Characteristic Curve Parameters IEC Curve A (Standard Inverse) 0.14 0.02 IEC Curve B (Very Inverse) 13.5 1.00 IEC Curve C (Extremely Inverse) 80.0 2.00 LTI (Long Time Inverse) 120.0 1.00 ⓒ 2016 Rootech Inc. All Rights Reserved Page 403...

  • Page 404: Instantaneous Over Current Relay(I.ocr)

    400 % FLC 1. The threshold value is set based on the RMS value, and the relay operates based on instantaneous peak values obtained by multiplying the RMS value by √ 2. Page 404 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 405: Long Time Over Current Relay(Lt.ocr)

    When high phase current flows, it can cause current imbalance. This can result in ground current being measured by the ZCT during motor starting. However, Accura 2750P[C]-ACB features a shielded design and can measure up to 240 A of ground current. ⓒ 2016 Rootech Inc. All Rights Reserved Page 405...
  • Page 406 When it is set to 0(Auto), the protection relay function is starting interval / blocked throughout the entire starting interval 0.1 - 50.0 sec Page 406 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 407: Chapter 13 Control Functions

    It is possible to set permissions for motor control commands in multiple control channels according to Local/Remote control mode setup. LOP control mode Determination of control mode 1, 2 Local/Remote mode is determined using the Local/Remote button on Accura 2750LC. ⓒ 2016 Rootech Inc. All Rights Reserved Page 407...
  • Page 408 The LCD screen of Accura 2700D module shows the control mode with the MCC and LOP control mode icons. The LCD screen of Accura 2750DC[I] module shows the control mode with text appearing on the right side of the status indication bar at the bottom. Page 408 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 409: Control Channels

    If the LOP function is deactivated, the LOP control mode gets to remote status, and the permission settings for the MCC Local/Remote mode follow permission settings for when the LOP control mode is in remote status. ⓒ 2016 Rootech Inc. All Rights Reserved Page 409...

  • Page 410: Safety Lock Function

    Setup with the Safety LOCK KEY on the front of Accura 2750LC[I] 1. It is supported when the LOP function is activated. Setup can be performed via the 「SETUP > Control > Starter Function > LOP Function」 menu on Accura 2750DC[I] module. Page 410 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 411 Safety LOCK function. You can disable or enable the Safety LOCK function of modules through the SETUP mode on Accura 2750DC[I] module via the Accura 2750DC[I] > SETUP > System > Safety LOCK Function menu. ⓒ 2016 Rootech Inc. All Rights Reserved Page 411...

  • Page 412: Inverter Operation Mode

    - When the start-to-run condition of motors is satisfied in during startup, the operation status changes to the running state. The motor is in normal running state after motor starting is completed. Page 412 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 413: Transition From Starting To Running Status

    Time before the motor enters the RUN state after the motor current exceeds 20 % of FLC Running interval Duration in which the motor transitions from the RUN state to the stopped state ⓒ 2016 Rootech Inc. All Rights Reserved Page 413...

  • Page 414: Fig 13.2 Double Crossings Of The Start-To-Run Threshold (1-Step Starting)

    The figure for 2-step starting is as follows. A typical example of 2-step starting is the Y-∆ starter. Fig 13.3 Double Crossings of the Start-to-Run Threshold (2-Step Starting) Step 1 Step 2 Transition Time 20% FLC STOP START Page 414 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 415: Fig 13.4 Single Crossing Of The Start-To-Run Threshold

    Regardless of the LSR setting, the motor status after T time is in the RUN state and no fault or alarm occurs. Fig 13.5 No Crossing of the Start-to-Run Threshold 20% FLC STOP START ⓒ 2016 Rootech Inc. All Rights Reserved Page 415...

  • Page 416: Starter Mode

    It is possible to start the motor only when the LOP function is activated and the Safety LOCK Key status is disabled. the Safety LOCK Key should be disabled at other locations. Page 416 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 417 The following figure shows the timing when a start command in reverse direction is issued after the forward operation of the motor when Control Direct Transition is set to Off. The start command in reverse ⓒ 2016 Rootech Inc. All Rights Reserved Page 417...

  • Page 418: Fig 13.6 Transition Timeout Of Reversing Starter (Control Direct Transition: Off)

    Transition timeout is also applied to 2-speed starter in the same manner. Fig 13.7 Transition Timeout of Reversing Starter (Control Direct Transition: On) Forward Start Command Reverse Start Command Transition Timeout Forward Digital Output Reverse Digital Output Page 418 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 419: Fig 13.8 Transition Timeout In 2-Step Starter

    Setup Item Setup Item Description Range Default STOP Extension Time Ignores RUN control commands entered during Extension 0.0 – 2.0 sec 0.5 sec time after the STOP command is complete ⓒ 2016 Rootech Inc. All Rights Reserved Page 419...

  • Page 420: Digital Inputs/Outputs

    3. Set the digital input to energized status if the MCCB operates normally. If the MCCB trips, set the digital input to de-energized status. To perform reverse operations, set the polarity of this channel to Reverse. 4. It is used to detect power outage/recovery when the auto restart function is performed. Page 420 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 421: Digital Output Functions

    Appendix E displays the wiring diagrams for the four starter modes and the ladder diagram of the default control logic. Using Accura Logic Editor, you can customize the default control logic ⓒ 2016 Rootech Inc. All Rights Reserved Page 421...

  • Page 422: Fig 13.9 Function Block Diagram Of Control Logic

    Digital input set to General Input 1 IX0.11 DI_GENERAL2 Digital input set to General Input 2 IX0.12 DI_GENERAL3 Digital input set to General Input 3 IX0.13 DI_GENERAL4 Digital input set to General Input 4 Page 422 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 423 Setup item for permission of the start command on Accura 2700D TX0.7 STOP_PERMISSION_BY_ D Setup item for permission of the stop command on Accura 2700D TX0.8 START_PERMISSION_BY_NET Setup item for permission of the start command via remote network ⓒ 2016 Rootech Inc. All Rights Reserved Page 423...
  • Page 424 Alarm output of Unbalanced Current Relay TX2.5 JAM_DEFTIME_ALARM Alarm output of JAM Relay TX2.6 LSR_DEFTIME_ALARM Alarm output of Long Start Relay TX2.7 GRZCT_DEFTIME_ALARM Alarm output of Ground Fault Relay with ZCT (ground current) Page 424 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 425 Output contact set to General Output 10 QX0.16 DO_GENERAL11 Output contact set to General Output 11 QX0.17 DO_GENERAL12 Output contact set to General Output 12 QX0.18 DO_GENERAL13 Output contact set to General Output 13 ⓒ 2016 Rootech Inc. All Rights Reserved Page 425...

  • Page 426: Overload Protection

    - Function for permission of starting and stopping the motor for each control channel in control mode - Auto restart function - Function for checking control command errors - Maintenance function Page 426 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 427: Fig 13.10 Overload Relay Wiring Diagram

    The following figure displays an example of protection relay wiring. The DO4B contact is used as a fault output contact. It is configured to trip the motor in operation when the protection relay in Accura 2750P detects a fault. Fig 13.10 Overload Relay Wiring Diagram ⓒ 2016 Rootech Inc. All Rights Reserved Page 427...

  • Page 428: Direct Starter

    Wiring Diagram The following figure displays an example of direct starter wiring . The RUN1 and STOP push buttons are connected to digital input contacts. Fig 13.11 Direct Starter Wiring Diagram Page 428 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 429: Fig 13.12 Time Sequence Diagram Of Direct Starter

    The start command issued while the motor is running and the stop command issued while the motor is stopped are ignored. If the start command and stop command are input at the same time, the stop command is processed first, and the motor in operation stops. ⓒ 2016 Rootech Inc. All Rights Reserved Page 429...

  • Page 430: Reversing Starter

    Accura 2750PC module can also be utilized to stop the motor. Wiring Diagram The following figure displays an example of reversing starter wiring. Fig 13.13 Reversing Starter Wiring Diagram The time sequence is different according to the Control Direct Transition setting. Page 430 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 431: Fig 13.14 Time Sequence Diagram Of Reversing Starter (Control Direct Transition: Disabled)

    Transition Timeout setting elapses as shown in ⓐ. On the other hand, the ⓑ command is ignored because it was made in a state where the timer according to the transition timeout setting has not expired. ⓒ 2016 Rootech Inc. All Rights Reserved Page 431...

  • Page 432: 2-Speed Starter

    (5) The device has the function for tripping the motor internally when a fault occurs. However, the fault output of Accura 2750PC module can also be utilized to stop the motor. Page 432 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 433: Fig 13.16 2-Speed Starter (Pole-Changing Motor) Wiring Diagram

    Chapter 13 Control Functions Wiring Diagram The following figure shows an example of the wiring diagram applied to a pole-changing motor in 2- speed starter. Fig 13.16 2-Speed Starter (Pole-changing Motor) Wiring Diagram ⓒ 2016 Rootech Inc. All Rights Reserved Page 433...

  • Page 434: Fig 13.17 2-Speed Starter(Dahlander Motor) Wiring Diagram

    RUN1 (or RUN2) command. On the other hand, the ⓑ command is ignored because it was made in a state in which the timer according to the transition timeout setting has not expired. Page 434 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 435: Fig 13.18 Time Sequence Diagram Of 2-Speed Starter (Control Direct Transition: Disabled)

    Fig 13.19 Time Sequence Diagram of 2-Speed Starter (Control Direct Transition: Enabled) RUN1 Command ⓐ ⓑ RUN2 Command delayed ignored STOP Command Transition Timer RUN1 Digital Output (DO1) RUN2 Digital Output (DO2) ⓒ 2016 Rootech Inc. All Rights Reserved Page 435...

  • Page 436: 2-Step Starter

    (5) The device has the function for tripping the motor internally when a fault occurs. However, the fault output of Accura 2750PC module can also be utilized to stop the motor. Page 436 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 437 CT wiring in Accura 2750PC module. (1) CT Wiring : when the motor power cable passes through the through-hole CT Fig 13.20 Y-△ Starter Wiring Diagram(Built-in CT Wired to the Motor Power Cable) ⓒ 2016 Rootech Inc. All Rights Reserved Page 437...
  • Page 438 Accura 2700/2750 User Guide (2) CT Wiring: when the motor ∆-Winding cable passes through the through-hole CT Fig 13.21 Y-△ Starter Wiring Diagram(Built-in CT Wired to the Motor ∆ Winding Cable) Page 438 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 439 If motor current at step 1 exceeds the threshold and falls back 30 – 300 % FLC 100 % FLC Threshold below the level, transition to Step 2 is automatically made. ⓒ 2016 Rootech Inc. All Rights Reserved Page 439...

  • Page 440: Custom Starter

    Control commands are issued to the motor by the RUN1, RUN2 and STOP commands same as in the four predefined starter modes. And the motor operation is controlled by the control logic created by the user. Page 440 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 441: Emergency Start

    In other words, the number of starting times increases by 1 only when the operating state of the motor affected by motor current is changed from the STOP state to the START state. ⓒ 2016 Rootech Inc. All Rights Reserved Page 441...

  • Page 442: Checking Control Command Errors

    The remote reset function is used to reset events via remote network when it is difficult to access the installation location of Accura 2750P[C], Accura 2750D[C/CI], and Accura 2700D. Setup Item Description Range Default Remote Reset Function Event reset via remote network Disable / Enable Disable Page 442 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 443: Auto Restart

    This digital input is directly connected to the control power source, enabling to assess power outage and power recovery based on the state of the control power source. Assessment criteria are as follows. ⓒ 2016 Rootech Inc. All Rights Reserved Page 443...

  • Page 444: Time Sequence Diagram

    (up to the maximum T1), and it continues to remain closed even after recovery. Fig 13.24 Power Outage Time < T1 Power outage time Control Enable Time (T1) Closed Power Power outage recovery Page 444 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 445: Fig 13.26 T2 < Power Outage Time

    T1 and T2 as the same values. Fig 13.26 T2 < Power Outage Time Power outage time Control Enable Time (T1) Control Disable Time (T2) Closed Open Power Power outage recovery ⓒ 2016 Rootech Inc. All Rights Reserved Page 445...

  • Page 446: Refusal Of Control Command

    1. In case of overlapping commands, the last control command is processed. When commands are issued simultaneously, the stop command takes priority over other commands. Page 446 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 447: Causes Of Refusal

    1 second from Control Logic RUN1, RUN2, Control OFF mode Retry after removing the cause of the active status of the DI_OFF input or deactivating the (DI_OFF input in active state) DI_OFF input. ⓒ 2016 Rootech Inc. All Rights Reserved Page 447...

  • Page 448: Chapter 14 Maintenance

    1. Peak demand is cleared using the command to clear the max/min values. 2. The demand values of the incoming unit and all motor units in the MCC are cleared using the demand clear command. Page 448 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 449: Energy Set

    Accumulates positive reactive energy 0 – 4,611,686,018,427,387,903 (2 kVARh Delivered Reactive Energy Accumulates negative reactive energy 0 – 4,611,686,018,427,387,903 (2 kVARh Apparent Energy Accumulates apparent energy 0 – 4,611,686,018,427,387,903 (2 kVAh ⓒ 2016 Rootech Inc. All Rights Reserved Page 449...

  • Page 450: Test Mode

    Time-out period for exiting test mode 1 – 10000 min 1 min Test Mode Test mode for inspecting operational states Test Off / Normal Test / Dip Test / Swell Test Block Diagram for Protection Tests Page 450 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 451 - Magnitude of the voltage swell : 130 % of the reference voltage(Vref) - Voltage change: Vref measured over 15 cycles → A swell occurs over 5 cycles → back to Vref ⓒ 2016 Rootech Inc. All Rights Reserved Page 451...

  • Page 452: Motor Unit

    - A2700D>HOME>Motor-Unit>Summary>External Event - A2750D[C/CI]>DISPLAY>Summary>Ext Event Event Clear Clears the event with the event reset command after removing the event condition - A2700D>HOME>Motor-Unit>Summary>Measurement & Alarm Reset>RESET - A2750D[C/CI]>RESET - A2750P[C]>RESET - A2750LC[I]>RESET Page 452 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 453: Control Command Error Check Events

    Average Starting Time Limit An event occurs when the minimum number of starting operations and the limit on the average starting time are exceeded. ⓒ 2016 Rootech Inc. All Rights Reserved Page 453...

  • Page 454: Information On Motor Starting

    Minimum value among the motor starting currents [% FLC] Average value Average value among the motor starting currents [% FLC] Latest value Motor starting current measured during the latest starting operation [% FLC] Page 454 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 455: Motor History

    - A2750D[C/CI]>DISPLAY>Motor>Starts Count and Total Operation Time Motor History Clear Clears the history data with the command to clear the motor history - A2700D>SETUP>Motor Unit>Maintenance>Data Clear>Motor History Clear - A2750D[C/CI]>SETUP>Maintenance>Data Clear>Motor History Clear ⓒ 2016 Rootech Inc. All Rights Reserved Page 455...

  • Page 456: Data Clear

    Accumulates only positive reactive energy 0 – 4,611,686,018,427,387,903 (2 VARh Delivered reactive energy Accumulates only negative reactive energy 0 – 4,611,686,018,427,387,903 (2 VARh Apparent energy Accumulates apparent power 0 – 4,611,686,018,427,387,903 (2 Page 456 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 457: Test Mode

    Fault/Alarm screen after the corresponding protection signals are generated. If you reset the Fault/Alarm status using the Event reset button, the test mode is reset, and the operation mode returns to normal status. Block Diagram for Protection Tests ⓒ 2016 Rootech Inc. All Rights Reserved Page 457...
  • Page 458 1. Fault and Alarm settings are virtually activated in the protection relay test, and the other settings operate based on the set values. 2. In the OCR test, the Fault time delay setup value is temporarily changed to 5 seconds. Page 458 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 459 De-energized Sets the DI to de-energized virtually De-energized Energized Sets the DI to energized virtually Energized 1. During the DI test, you can virtually set the digital input for each channel. ⓒ 2016 Rootech Inc. All Rights Reserved Page 459...
  • Page 460 1. During the DO test, you can change the digital output contact for each channel to an open or closed status. 2. The output of Channel 5, supported by Accura 2750VOL module, is based on a Form-A contact point. Page 460 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 461: Chapter 15 Events

    All events except for fault, alarm, and caution events (no notifications) 1. It is classified as a fault or alarm event according to user settings. 2. It is classified as an alarm or caution event according to user settings. ⓒ 2016 Rootech Inc. All Rights Reserved Page 461...

  • Page 462: Captured Events

    The following figure displays incoming-unit events occurring in Accura 2700M/2700D/2750LCG. The incoming unit supports only Alarm Captured Events. Fig 15.1 Incoming-Unit Events Incoming-Unit Events Captured Events 1 100 Event A2700M A2700DW Circular Buffer A2750LCG (100) Page 462 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 463: Motor-Unit Events

    1. Self-diagnosis events are stored in the volatile memory of Accura 2750D[C/CI], and you can check them on its LCD screen. 2. Self-diagnosis events are stored in the volatile memory of Accura 2750LC[I], and you can check them on its FND screen. ⓒ 2016 Rootech Inc. All Rights Reserved Page 463...

  • Page 464: Event Storage Items

    Module in which the Event Occurred Accura 2700M Accura 2700D Accura 2750P[C] Accura 2750D[C/CI] Accura 2750LCG Accura 2750LC[I] Network Accura 2750INV/VOL 1. It refers to the host system connected through remote network. Page 464 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 465 Records changes in the connection state of the module by the user (Change: determined for the time longer than 1 second) 1. Protection & monitoring events provide 36 cycles of RMS trend data before and after the occurrence of an event. ⓒ 2016 Rootech Inc. All Rights Reserved Page 465...
  • Page 466 Since event properties are different for each event type, refer to the explanations provided separately for each event type. Event Details Since event details are different for each event type, refer to the explanations provided separately for each event type. Page 466 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 467: Event Property And Details For Each Event Type

    1. It occurs with the digital input configured as MCCB Trip input and is classified as a Fault Captured event. 2. It occurs with the digital input configured as INV MCCB Trip input and is classified as a Fault Capture event. ⓒ 2016 Rootech Inc. All Rights Reserved Page 467...
  • Page 468 CrossNum (LSR) [% FLC] Fault JAM Relay Alarm IA [A] IB [A] IC [A] Ig [A] Ipk1 [% FLC] Fault IA [A] IB [A] IC [A] Ig [A] Ipk2 [% FLC] Page 468 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 469 4. Ipk1: the maximum value of the 3-phase current in the interval where the Alarm Threshold is exceeded and an alarm event occurs 5. Ipk2: the maximum value of the 3-phase current during the interval where pickup and fault events occur ⓒ 2016 Rootech Inc. All Rights Reserved Page 469...

  • Page 470: Motor Status Events

    Not-ready state by the overcurrent relay 0x0002 Not-ready state by the thermal relay 0x0004 POCR Not-ready state by the phase out current relay 0x0008 Not-ready state by the phase sequence relay Page 470 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 471 Not-ready state by errors in assigning control command 0x1000 Control Logic Parsing Error Not-ready state by control logic parsing error 0x2000 Control Logic Not Ready Not-ready state by control logic upgrade or start mode change ⓒ 2016 Rootech Inc. All Rights Reserved Page 471...

  • Page 472: Start Inhibit Events

    「Start Refusal」 indicates a refusal of the motor start command in the inhibit state. Refer to 「Chapter 13 Control Functions> Refusal of Control Command Refusal」 for details. Page 472 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 473: Control Command Events

    Command for switching to BYPASS mode INVERTER Command for switching to AUTO automatic operation mode of the inverter INVERTER Command for switching to MANUAL the manual operation mode of the inverter ⓒ 2016 Rootech Inc. All Rights Reserved Page 473...

  • Page 474: Control Mode Events

    Accura 2750INV additionally supports Channel 11 to Channel 15. 3. The value for the DI state is the value for the energized/de-energized status, irrespective of the polarity setup for each channel. Page 474 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 475: Digital Output Events

    3. Accura 2750P only supports Channel 1,2 and 4, whereas Accura 2750PC supports channels from Channel 1 to 4. Accura 2750INV supports channels from 5 to 13, and Accura 2750VOL only supports Channel 5. ⓒ 2016 Rootech Inc. All Rights Reserved Page 475...

  • Page 476: Setup Change Events

    Minimum ZCT current Total power calculation Start-to-run condition threshold Power factor sign Start-to-run condition time delay Power factor value at no-load Default Frequency Reserved Start-to-run condition function Demand power selection [kW] Reserved Page 476 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 477 OCR TMS JAM alarm time delay Reserved 1. Bit allocation data for Detail1 and Detail2 of the Fault /Alarm/Latched Alarm events are as follows. Item Item Bit [0] Bit [8] GR(CT) ⓒ 2016 Rootech Inc. All Rights Reserved Page 477...
  • Page 478 Control command error A2750LC[I] Lock Status Auto restart function Control Permission in MCC Local/LOP Local mode Auto restart control enable time Control Permission in MCC Remote/LOP Local mode Auto restart control disable time Page 478 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 479 2. Bit allocation data for Control Command Error Check are as follows. Item Bit [1-0] Start command check Bit [3-2] Run check back Bit [5-4] Stop command check Bit [7-6] Stop check back ⓒ 2016 Rootech Inc. All Rights Reserved Page 479...
  • Page 480 Setup Parameter (UINT16) Setup Parameter (UINT16) IP address Gateway Subnet mask Modbus TCP timeout Setup Category: RS-485(7) Setup Parameter (UINT16) Setup Parameter (UINT16) Device address Parity bit Baud rate Stop bit Page 480 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 481 Accura 2750D[C/CI] LCD forced blink Accura 2700D event LED on time Accura 2750D[C/CI] buzzer function Accura 2700D alarm LED period Accura 2750D[C/CI] buzzer period Accura 2700D alarm LED on time Accura 2750D[C/CI] buzzer on time ⓒ 2016 Rootech Inc. All Rights Reserved Page 481...
  • Page 482 Value after making the change Setup Parameter of the Motor Unit Value before making a change Value after making the change 1. The data type for changing energy settings is UINT64. Page 482 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 483: Module Connection Events

    Redundancy events of Accura 2700M and Accura 2750LCG are classified as incoming-unit events, and other events are classified as motor-unit events. Redundancy events have the following properties. Event Properties Redundancy Error Type Error Information ⓒ 2016 Rootech Inc. All Rights Reserved Page 483...
  • Page 484 1. The port group for Accura 2750LC is divided into (1) Group 1 and (2) Group 2. 2. The operation mode of Accura 2750LCG module is divided into (0) Disconnected, (1) Active (2) Standby, (4) Detection status. Page 484 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 485: Control Command Error Check Events

    Events relating to limiting the average Limit Level [% FLC] starting current of the motor Average Starting Time Limit Events relating to limiting the average Limit Time [sec] starting time of the motor ⓒ 2016 Rootech Inc. All Rights Reserved Page 485...

  • Page 486: Self-Diagnosis Events

    Source Stuck STOP Button The STOP button is pressed for over 30 Refer to the Button seconds. Source Stuck A2750DC[I] The LOCAL./REMOTE button is pressed for Refer to the Button Page 486 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 487 The Button Source for Stuck Button events is as follows. Button Source Accura 2700M Accura 2700D Accura 2750P[C] Accura 2750D[C/CI] Accura 2750LCG Accura 2750LC[I] Standby Accura 2700M Standby Accura 2750LCG Secondary Accura 2750P[C] ⓒ 2016 Rootech Inc. All Rights Reserved Page 487...

  • Page 488: Auto Restart Events

    Event Reset Events Event Reset Events for Accura 2700M are classified as incoming-unit events, and other events are motor- unit events. The event properties are as follows. Event Properties Reset Source Page 488 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 489 0x0000_4000 Run Check Back Error 0x0000_8000 Stop Command Check Error 0x0001_0000 Stop Check Back Error 0x0002_0000 0x0004_0000 I.OCR 0x0008_0000 INV Fault1 0x0010_0000 INV Fault2 0x0020_0000 INV MCCB Trip 0x0040_0000 LT.OCR 0x0080_0000 ⓒ 2016 Rootech Inc. All Rights Reserved Page 489...

  • Page 490: Module Management Events

    / ID Module ID Conflict None Conflict Count Module ID Module ID Module types are as follows. Module Type Invalid Accura 2750P[C] Accura 2750P[C] Secondary Reserved Accura 2750LC[I] Accura 2750LC POW Page 490 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 491: Event Alarm & Clear

    Starting of motor in the inhibit state is prohibited. Detailed causes of the refusal of the control command are displayed on the pop-up window of the module where the control command is issued. Refer to 「Chapter 13 Control Functions > Refusal of Control Command」 for details. ⓒ 2016 Rootech Inc. All Rights Reserved Page 491...
  • Page 492 ● MCC REMOTE, LOP LOCAL ● ● Digital input De-energized ● ● Energized ● ● Digital output Open ● ● Closed ● ● Setup change Meter ● ● Protection ● ● Page 492 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 493 ● ● missing Control Start Command Check ● ● ● ● Alarm/ command Fault Run Check Back ● ● ● ● error check settings Stop Command Check ● ● ● ● ⓒ 2016 Rootech Inc. All Rights Reserved Page 493...
  • Page 494 Max/Min Clear ● ● Demand Sync ● ● Demand Clear ● ● Energy Clear ● ● Event Log Clear ● ● Motor History Clear ● ● Fault/Alarm Counter Clear ● ● Page 494 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 495: Clearing Events

    - Delete with the host system (Modbus communication map) via remote network. - Delete via the screen of Accura 2700D: 「SETUP>Unit>Maintenance>Data Clear>Event Log Clear」. - Delete via the screen of Accura 2750D[C/CI]: 「SETUP>Maintenance>Data Clear>Event Log Clear」. ⓒ 2016 Rootech Inc. All Rights Reserved Page 495...

  • Page 496: Appendix A Specifications

    Membrane UL94 Accura 2750D[C/CI] LCD Window 650 °C IEC 60695-2-12 EMC Immunity IEC 61326-1, IEC 6100-3-2, IEC 61000-3-3 Electrostatic discharge immunity 8 kV / air IEC 61000-4-2 6 kV / contact Page 496 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 497 130.0W x 156.6H x 57.0D Accura 2750LC POW 170 g 86.2W x 91.0H x 38.0D Unit-Socket 52 g 33.8W x 83.4H x 28.0D Bridge-Socket 52 g 33.8W x 83.4H x 28.0D ⓒ 2016 Rootech Inc. All Rights Reserved Page 497...
  • Page 498 5 A @ CT 5A 1 A @ CT 1A Maximum input current 10 A @ CT 5A (twice the rated current) 2 A @ CT 1A (twice the rated current) Page 498 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 499 Communication redundancy via ring topology Connector type RJ45 connector Communication cable Ethernet cable Cat 5e FTP, STP, SFTP Communication cable length Maximum 100 m Communication cable connection method Star, Daisy-chain, Ring topology ⓒ 2016 Rootech Inc. All Rights Reserved Page 499...
  • Page 500 Measurement Specifications Voltage wiring mode 3P3W, 3P4W Sampled measurement data AC voltage/current waveforms Frequency measuring range 42 – 69 Hz (50/60 Hz) Voltage sampling rate 512 samples/cycle Current sampling rate 256 samples/cycle Page 500 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 501 Current phasor(Reference: A voltage or AB voltage) Demand current(per phase/average), peak demand current (per phase/average) Active power Accuracy Active power IEC 61557-12 Class 0.5 Active energy Active energy IEC 62053-22 Class 0.5S ⓒ 2016 Rootech Inc. All Rights Reserved Page 501...
  • Page 502 ±0.5 % Measurement method Line-to-Neutral voltage/Line-to-Line NEMA MG1 voltage, Phase current unbalance Unbalance based on the symmetrical IEC 61000-4-30 component Measurement data Line-to-Neutral/Line-to-Line voltage/current unbalance based on the NEMA standard (instantaneous, maximum) Page 502 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 503 For a 3-phase 4-wire connection, the measurement is based on the line-to-neutral voltage of phase A. 9. For a 3-phase 3-wire voltage connection, it is calculated with the line-to-line voltage. For a 3-phase 4-wire connection, it is calculated with the line-to-neutral voltage. ⓒ 2016 Rootech Inc. All Rights Reserved Page 503...
  • Page 504 2. A communication cable for the display module is provided when you order Accura 2700D. To connect Accura 2700M products in a redundant configuration, you should order an additional communication cable for the display module. Page 504 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 505 Group 1: channel 1 – 5 (1DI – 1DI ) 1DI common Group 2: channel 6 – 10 (2DI – 2DI ) 2DI common Minimum pulse width 50 msec Input type External power supply connection (external excitation) ⓒ 2016 Rootech Inc. All Rights Reserved Page 505...
  • Page 506 Communication cable Maximum 3 m length Connection to Internal protocol 1 port (DISPLAY), Accura 2750D[C/CI], the HMI Connector type RJ45 connector module Communication cable Ethernet cable Cat 5e FTP(F/UTP) Communication cable length Page 506 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 507 Up to 20 A – Ib (accuracy guaranteed) Measurement method Total current calculated by summing the three-phase currents measured by the CT Measurement data Residual ground current, maximum residual ground current ⓒ 2016 Rootech Inc. All Rights Reserved Page 507...
  • Page 508 K-factor Measurement data K-factor per phase (instantaneous, maximum) Temperature Measurement Temperature sensor Located on the lower left side on the front of the device Temperature measuring range -20 – 100 °C Page 508 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 509 Fault Threshold 100 – 1000 % UB2 Fault Time Delay 0.05 – 2.00 sec Operation at Run Status Disable(default) / Enable Detection condition Average current > FLC x 20 % (internally fixed) ⓒ 2016 Rootech Inc. All Rights Reserved Page 509...
  • Page 510 Total current from three-phase CTs (residual ground current calculation method) Fault Threshold 5A model 20 A – 30 A 30A – 400A model 20 A – Ib Fault Time Delay 0.05 – 50 sec Page 510 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 511 Power recovery threshold 60 % of the reference voltage Auto-Restart Enable Time 0.1 – 2.0 sec Auto-Restart Disable Time 0.1 – 10.0 sec Auto-Restart Delay 1 – 600 sec ⓒ 2016 Rootech Inc. All Rights Reserved Page 511...
  • Page 512 10. The power supply is connected to the DI, and the corresponding DI is set to 「Control Power Monitoring」. 11. Events are categorized into Fault, Alarm, Caution, and General events according to their importance. Fault, Alarm, and Caution events support notification functions. Page 512 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 513 Min/Max measured value 0.30 A / 240 A CT primary current range 1.0 – 9,999.9 A (default: 5.0 A) CT secondary current range 1.0 – 5.0 A (default: 5.0 A) ⓒ 2016 Rootech Inc. All Rights Reserved Page 513...
  • Page 514 ACB trip signals. You can select either the Fault or MHT signal when mapping the digital output. 5. The threshold value is set based on the RMS value, and the relay operates based on instantaneous peak values obtained by multiplying the RMS value by √ 2. Page 514 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 515 External power supply connection Maximum input voltage AC 240 V Low voltage range AC 0 – 140 V High voltage range AC 165 – 240 V Minimum pulse width 50 msec ⓒ 2016 Rootech Inc. All Rights Reserved Page 515...
  • Page 516 AC 5 – 300V AC 65 – 300V voltage (accuracy guaranteed) Minimum AC 5V measured value voltage Measurement Line-to-Line voltage (per phase/average, maximum data per phase / maximum among average values) Line-to-Line voltage(per phase/average) Page 516 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 517 Run command in reverse direction and speed 2 mode STOP Stop command Control mode button LOCAL Select Local as MCC control mode. (Accura 2750DC[I] Only) REMOTE Select Remote as MCC control mode. ⓒ 2016 Rootech Inc. All Rights Reserved Page 517...
  • Page 518 (The ports have the same functions.) Accura 2700M 2 ports: connected to 2 Accura 2700M device redundancy Accura 2700M devices Connector type RJ45 connector Communication cable Ethernet cable Cat 5e FTP, STP, SFTP Page 518 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 519 2. FTP(Foiled Shielded Twisted Pairs), STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs) 3. If the number of connectable Accura 2750LC[I] modules exceeds 10 per group, an additional Accura 2750LC POW module should be connected. ⓒ 2016 Rootech Inc. All Rights Reserved Page 519...
  • Page 520 Used to move upwards and enter SETUP mode special functions Down(∨)/EVENT Used to move downwards and enter EVENT mode Right(>)/ENTER Used to move to the right and perform the ENTER function Page 520 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 521 2.1 – 3.5 mm (14 – 12 AWG) Rated voltage(Us) 110 – 240 V AC 50/60 Hz, 110 – 300 V DC Operating voltage range 0.8 x Us – 1.1 x Us ⓒ 2016 Rootech Inc. All Rights Reserved Page 521...
  • Page 522 3. It is possible to start the motor only when the locked status of other modules is cleared. 4. FTP(Foiled Shielded Twisted Pairs), STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs) Page 522 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 523 1. If the total cable length in a ring topology does not exceed 120 m, the maximum allowable cable length between units is 20 m. 2. If the total cable length in a ring topology does not exceed 800 m, the maximum allowable cable length between units is 20 m. ⓒ 2016 Rootech Inc. All Rights Reserved Page 523...

  • Page 524: Appendix B Standards

    UL 61010-1 3 edition, UL 60947-4-1 EN 55011:2016/A11:2010, EN IEC 61326-1:2021, EN IEC 61326-2-1:2021, EN IEC 61000-3-2:2019/A1:2021, EN 61000-3-3: 2013 /A2:2021 KN 32, KN 35 GB/T 14048.4-2010 General Warranty period 2 years Page 524 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 525: Iec 61557-12:2018 Power Metering And Monitoring Devices (Pmd)

    Current Range Crest Factor Class 0.5 (Harmonic) PMD Sx 10 % In – Imax 45 Hz to 15 times ± 0.5 % the rated frequency PMD Dx 20 % Ib – Imax ⓒ 2016 Rootech Inc. All Rights Reserved Page 525...
  • Page 526 PMD Dx PMD Sx 50 % Un – Umax 20 % Ib – Imax 10 % In – Imax 0.5 inductive ± 0.005 – 0.8 capacitive 1. It is an unitless value. Page 526 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 527: Iec 62053-21:2020 Static Meters For Ac Active Energy (Classes 0.5, 1 And 2)

    1. It is applicable only when external CTs are installed for voltage measurement. 2. The Imin value for Class 1S is “1% In” whereas the Imin value for Class 1 is “2% In”. ⓒ 2016 Rootech Inc. All Rights Reserved Page 527...

  • Page 528: Appendix C Accuracy

    @Fund. L-N voltage 300 V 0.5% Current @Fund. current 5 A 0.5% TDD [%] Current @Fund. Current 5 A 0.5% 1. It includes measurements of harmonics up to the 50th order. Page 528 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 529: Accura 2750P[C]/2750P[C]-Acb

    65 – 300 V Line-to-Line IEC 61557-12 Class 0.5 110 – 520 V Frequency 30 mHz 5 - 180 Hz Unbalance [%] Voltage Negative/zero-sequence unbalance [IEC 61000-4-30], 0.5% Unbalance based on the NEMA-MG1 standard ⓒ 2016 Rootech Inc. All Rights Reserved Page 529...

  • Page 530: Appendix D Setup Items

    0: Received Power Demand Subinterval 1-60 min 15 min Number of Subintervals 1 – 12 1. The setup item is commonly applied to the entire MCC(including the incoming unit and motor unit). Page 530 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 531: Communication

    Stop Bit 0: 1 bit 1: 2 bits 0: 1 bit 1. At 115,200 bps, a master can communicate with up to 16 slave devices at a maximum distance of 600 m. ⓒ 2016 Rootech Inc. All Rights Reserved Page 531...

  • Page 532: Events

    3P4W connection, line-to-neutral voltage is monitored. 2. For a 3P3W connection, the reference voltage for the percentage value is the line-to-line voltage, and for a 3P4W connection, the reference voltage is the line-to-neutral voltage. Page 532 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 533: User Interface

    Temperature Unit Selection for All Motor Units 0: ℃ (Celsius) 1: ℉ (Fahrenheit) 0: ℃ (Celsius) 1. The setup item is commonly applied to the entire MCC(including the incoming unit and motor unit). ⓒ 2016 Rootech Inc. All Rights Reserved Page 533...

  • Page 534: Maintenance

    0: Test Off 1: Normal Test 0: Test Off 2: Dip Test 3: Swell Test 1. Synchronization of the demand interval and clearing of demand values are performed at the same time. Page 534 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 535: System

    Valid Range: 1 – 5 1: 1 1: 1 2: 2 5: 5 End Day of Week for Summer Time Valid Range: 0 – 6 0: Sunday 0: Sunday 1: Monday ... 6: Saturday ⓒ 2016 Rootech Inc. All Rights Reserved Page 535...
  • Page 536 1. For redundancy configuration of Accura 2700M modules, set only the direction of the current for the active module. The current direction of the standby module is opposite to the current direction of the active module. Page 536 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 537: Motor-Unit Setup

    2. When using A2750PC-5A module with external CTs, the FLC is set based on the input current of the module. 3. The Long Start Relay(LSR) also operates based on the condition. It is not applicable for inverter mode in which the motor directly enters running status. ⓒ 2016 Rootech Inc. All Rights Reserved Page 537...

  • Page 538: Protection

    Alarm Threshold 70 – 90 % Unbalance 80 % Unbalance Startup Time Delay 0.0 – 5.0 sec 0.0 sec Current Calculation Method 0: Phase Unbalance 0: Phase Unbalance 1: Zero-Sequence Unbalance Page 538 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 539 0.02 – 20.00 A 1.00 A Alarm Time Delay 0.05 – 99.99 sec 0.05 sec Startup Blocking 0: Disable 1: Enable 0: Disable Startup Time Delay 0: Auto 0: Auto 0.1 – 50.0 sec ⓒ 2016 Rootech Inc. All Rights Reserved Page 539...
  • Page 540 6. If it is set to 0, the DO set to 「MCCB Trip」 operates instantaneously within 50 ms. Otherwise, it can be set to a value from 0.1 seconds to 10.0 seconds. Page 540 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 541: Control & Dio

    DI Start 0: Disable 1: Enable 1: Enable DI Stop 0: Disable 1: Enable 1: Enable A2750DC Start 0: Disable 1: Enable 1: Enable A2750DC Stop 0: Disable 1: Enable 1: Enable ⓒ 2016 Rootech Inc. All Rights Reserved Page 541...
  • Page 542 1 – 1440 min 5 min Control Command Error Check Start Command Check 0: Disable 0: Disable 1: Latched Alarm 2: Fault Run Check Back 0: Disable 0: Disable 1: Latched Alarm 2: Fault Page 542 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 543 11: MCCB Trip/ 12: External Alarm 13: Control Power Monitoring 14: INV MCCB Trip/ 15: INV RUN1 Status 16: INV RUN2 Status 17: INV Fault1 18: INV Fault2 101-115: General Input 1-15 ⓒ 2016 Rootech Inc. All Rights Reserved Page 543...
  • Page 544 1: RUN1 2: RUN2 3: Alarm 4: Fault 5: INV RUN1 6: INV RUN2 7: MCCB Trip 101-113: General Output 1-13 DO 2 Function Mapping Same as DO 1 0: No Use Page 544 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 545 DO channels from Channel 5 through 13 can be provided. By connecting to Accura 2750VOL module and enabling the inverter support setting, one additional DO channel, Channel 5 is provided. Channel 5 is a Form-C contact point. ⓒ 2016 Rootech Inc. All Rights Reserved Page 545...

  • Page 546: User Interface

    1: Self Rotation Page of Remote Control 0: Unit ID 0: Unit ID 1: A-Phase 2: B-Phase 3: C-Phase 4: ABC-Phase 5: Energy 6: ZCT Current 7: Current Rate 8: TCU Page 546 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 547 2: Orange Color A2750LC[I] Buzzer Buzzer for Button 0: Disable 1: Enable 1: Enable Buzzer for Fault/Alarm 0: Disable 1: Enable 1: Enable Buzzer Period 0.2 – 5.0 sec 1.0 sec ⓒ 2016 Rootech Inc. All Rights Reserved Page 547...

  • Page 548: Maintenance

    10000 hour Function 0: Disable 1: Caution 2: Alarm 0: Disable Non-Operating Time Limit Time 1 – 60000 hour 10000 hours Limit Function 0: Disable 1: Caution 2: Alarm 0: Disable Page 548 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 549: System

    1. Unit ID settings are only supported on Accura 2750P[C] or Accura 2750D[C/CI] module. 2. Safety LOCK Function settings are only supported on Accura 2750DC[I] module. 3. Unit Description settings are only supported on Accura 2700D module. ⓒ 2016 Rootech Inc. All Rights Reserved Page 549...

  • Page 550: Acb-Unit Setup

    0.05 – 10.00 1.00 Alarm Threshold 90 – 1000 % FLC 200 % FLC Alarm Time Delay 0.05 – 99.99 sec 0.05 sec Startup Blocking 0: Disable 1: Enable 1: Enable Page 550 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 551: Do Mapping

    Same as DO 1 0: No Use 1. Fault signals are latch signals that remain output until they are reset. 2. MHT signals are pulse signals output with a pulse width of 12 ms. ⓒ 2016 Rootech Inc. All Rights Reserved Page 551...

  • Page 552: Appendix E Starter Wiring Diagram

    Refer to the 「Accura Logic Editor Manual」 for details on changing the control logic. Overload Relay Wiring Diagram Fig E.1 Overload Relay Wiring Diagram There is no default control logic for overload relay mode. Page 552 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 553: Direct Starter

    Accura 2700/2750 User Guide Appendix E Starter Wiring Diagram Direct Starter Wiring Diagram Fig E.2 Direct Starter Wiring Diagram ⓒ 2016 Rootech Inc. All Rights Reserved Page 553...

  • Page 554: Default Control Logic

    Appendix E Starter Wiring Diagram Accura 2700/2750 User Guide Default Control Logic Fig E.3 Default Control Logic of Direct Starter Page 554 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 555: Reversing Starter

    Accura 2700/2750 User Guide Appendix E Starter Wiring Diagram Reversing Starter Wiring Diagram Fig E.4 Reverse Starter Wiring Diagram ⓒ 2016 Rootech Inc. All Rights Reserved Page 555...

  • Page 556: Default Control Logic

    Appendix E Starter Wiring Diagram Accura 2700/2750 User Guide Default Control Logic Fig E.5 Default Control Logic of Reverse Starter Page 556 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 557 Accura 2700/2750 User Guide Appendix E Starter Wiring Diagram ⓒ 2016 Rootech Inc. All Rights Reserved Page 557...

  • Page 558: 2-Speed Starter

    Appendix E Starter Wiring Diagram Accura 2700/2750 User Guide 2-Speed Starter Wiring Diagram Fig E.6 2-Speed Starter Wiring Diagram (Pole-Changing Motor Applied) Page 558 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 559: Fig E.7 2-Speed Starter Wiring Diagram (Dahlander Motor Applied)

    Accura 2700/2750 User Guide Appendix E Starter Wiring Diagram Fig E.7 2-Speed Starter Wiring Diagram (Dahlander Motor Applied) ⓒ 2016 Rootech Inc. All Rights Reserved Page 559...

  • Page 560: Default Control Logic

    Appendix E Starter Wiring Diagram Accura 2700/2750 User Guide Default Control Logic Fig E.8 Default Control Logic of 2-Speed Starter Page 560 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 561 Accura 2700/2750 User Guide Appendix E Starter Wiring Diagram ⓒ 2016 Rootech Inc. All Rights Reserved Page 561...

  • Page 562: 2-Step Starter

    Appendix E Starter Wiring Diagram Accura 2700/2750 User Guide 2-Step Starter Wiring Diagram Fig E.9 Y-△ Starter Wiring Diagram (Built-in CTs Wired to the Motor’s Power Supply Cable) Page 562 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 563 Accura 2700/2750 User Guide Appendix E Starter Wiring Diagram Fig E.10 Y-△ Starter Wiring Diagram (Built-in CTs Wired to the Motor’s △ Winding Cable) ⓒ 2016 Rootech Inc. All Rights Reserved Page 563...
  • Page 564 Appendix E Starter Wiring Diagram Accura 2700/2750 User Guide Fig E.11 Autotransformer Starter Wiring Diagram Page 564 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 565: Default Control Logic

    Accura 2700/2750 User Guide Appendix E Starter Wiring Diagram Default Control Logic Fig E.12 Default Control Logic of 2-Step Starter ⓒ 2016 Rootech Inc. All Rights Reserved Page 565...
  • Page 566 Appendix E Starter Wiring Diagram Accura 2700/2750 User Guide Page 566 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 567: Appendix F Characteristics Curve Of The Thermal Relay

    Characteristics Curve of the Thermal Relay (Motor Trip Class 5) Fig F.1 Characteristics Curve of the Thermal Relay (Motor Trip Class 5) THR Curve (Trip Class 5) Cold k = 1.15 1,000.00 100.00 10.00 1.00 0.10 / FLC ⓒ 2016 Rootech Inc. All Rights Reserved Page 567...

  • Page 568: Timetable For The Thermal Relay (Motor Trip Class 5)

    1.212 1.011 0.809 0.607 0.405 0.203 1.930 1.354 1.162 0.969 0.776 0.582 0.388 0.194 1.852 1.299 1.114 0.929 0.744 0.558 0.372 0.186 10.0 1.778 1.247 1.070 0.892 0.714 0.536 0.358 0.179 Page 568 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 569: Characteristics Curve Of The Thermal Relay (Motor Trip Class 10)

    Characteristics Curve of the Thermal Relay (Motor Trip Class 10) Fig F.2 Characteristics Curve of the Thermal Relay (Motor Trip Class 10) THR Curve (Trip Class 10) Cold k = 1.15 1,000.00 100.00 10.00 1.00 0.10 / FLC ⓒ 2016 Rootech Inc. All Rights Reserved Page 569...

  • Page 570: Timetable For The Thermal Relay (Motor Trip Class 10)

    2.424 2.022 1.619 1.215 0.811 0.406 3.861 2.709 2.323 1.937 1.551 1.164 0.777 0.389 3.704 2.598 2.228 1.858 1.488 1.117 0.745 0.373 10.0 3.556 2.494 2.139 1.784 1.428 1.072 0.715 0.358 Page 570 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 571: Characteristics Curve Of The Thermal Relay (Motor Trip Class 15)

    Characteristics Curve of the Thermal Relay (Motor Trip Class 15) Fig F.3 Characteristics Curve of the Thermal Relay (Motor Trip Class 15) THR Curve (Trip Class 15) Cold k = 1.15 1,000.00 100.00 10.00 1.00 0.10 / FLC ⓒ 2016 Rootech Inc. All Rights Reserved Page 571...

  • Page 572: Timetable For The Thermal Relay (Motor Trip Class 15)

    3.636 3.033 2.428 1.822 1.216 0.608 5.791 4.063 3.485 2.906 2.327 1.746 1.165 0.583 5.556 3.897 3.343 2.788 2.232 1.675 1.117 0.559 10.0 5.334 3.741 3.209 2.676 2.142 1.608 1.073 0.537 Page 572 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 573: Characteristics Curve Of The Thermal Relay (Motor Trip Class 20)

    Characteristics Curve of the Thermal Relay (Motor Trip Class 20) Fig F.4 Characteristics Curve of the Thermal Relay (Motor Trip Class 20) THR Curve (Trip Class 20) Cold k = 1.15 1,000.00 100.00 10.00 1.00 0.10 / FLC ⓒ 2016 Rootech Inc. All Rights Reserved Page 573...

  • Page 574: Timetable For The Thermal Relay (Motor Trip Class 20)

    4.848 4.043 3.237 2.430 1.621 0.811 7.722 5.417 4.647 3.875 3.102 2.328 1.553 0.777 7.408 5.196 4.457 3.717 2.975 2.233 1.490 0.745 10.0 7.112 4.989 4.279 3.568 2.856 2.144 1.430 0.716 Page 574 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 575: Characteristic Curve Of The Thermal Relay (Motor Trip Class 25)

    Characteristic Curve of the Thermal Relay (Motor Trip Class 25) Fig F.5 Characteristics Curve of the Thermal Relay (Motor Trip Class 25) THR Curve (Trip Class 25) Cold k = 1.15 1,000.00 100.00 10.00 1.00 0.10 / FLC ⓒ 2016 Rootech Inc. All Rights Reserved Page 575...

  • Page 576: Timetable For The Thermal Relay (Motor Trip Class 25)

    6.061 5.054 4.046 3.037 2.026 1.014 9.652 6.771 5.808 4.844 3.878 2.910 1.942 0.972 9.260 6.495 5.571 4.646 3.719 2.791 1.862 0.932 10.0 8.891 6.236 5.349 4.460 3.570 2.680 1.788 0.894 Page 576 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 577: Characteristics Curve Of The Thermal Relay (Motor Trip Class 30)

    Characteristics Curve of the Thermal Relay (Motor Trip Class 30) Fig F.6 Characteristics Curve of the Thermal Relay (Motor Trip Class 30) THR Curve (Trip Class 30) Cold k = 1.15 1,000.00 100.00 10.00 1.00 0.10 / FLC ⓒ 2016 Rootech Inc. All Rights Reserved Page 577...

  • Page 578: Timetable For The Thermal Relay (Motor Trip Class 30)

    7.273 6.065 4.856 3.645 2.432 1.217 11.583 8.126 6.970 5.812 4.653 3.492 2.330 1.166 11.112 7.794 6.685 5.575 4.463 3.350 2.235 1.118 10.0 10.669 7.483 6.418 5.352 4.285 3.216 2.145 1.073 Page 578 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 579: Characteristics Curve Of The Thermal Relay (Motor Trip Class 35)

    Characteristics Curve of the Thermal Relay (Motor Trip Class 35) Fig F.7 Characteristics Curve of the Thermal Relay (Motor Trip Class 35) THR Curve (Trip Class 35) Cold k = 1.15 1,000.00 100.00 10.00 1.00 0.10 / FLC ⓒ 2016 Rootech Inc. All Rights Reserved Page 579...

  • Page 580: Timetable For The Thermal Relay (Motor Trip Class 35)

    8.485 7.076 5.665 4.252 2.837 1.419 13.513 9.480 8.131 6.781 5.429 4.075 2.718 1.360 12.964 9.093 7.800 6.504 5.207 3.908 2.607 1.304 10.0 12.447 8.730 7.488 6.244 4.999 3.751 2.503 1.252 Page 580 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 581: Characteristics Curve Of The Thermal Relay (Motor Trip Class 40)

    Characteristics Curve of the Thermal Relay (Motor Trip Class 40) Fig F.8 Characteristics Curve of the Thermal Relay (Motor Trip Class 40) THR Curve (Trip Class 40) Cold k = 1.15 1,000.00 100.00 10.00 1.00 0.10 / FLC ⓒ 2016 Rootech Inc. All Rights Reserved Page 581...

  • Page 582: Timetable For The Thermal Relay (Motor Trip Class 40)

    11.617 9.688 7.756 5.821 3.884 1.943 18.501 12.979 11.133 9.284 7.433 5.578 3.722 1.862 17.748 12.450 10.679 8.905 7.129 5.350 3.569 1.786 10.0 17.041 11.952 10.252 8.549 6.844 5.136 3.426 1.714 Page 582 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 583: Appendix G Inverse Time Characteristic Curves

    Fig G.2 Point of Transition to Definite Time Characteristic at 0.05 Seconds or Less Time Operating range 0.05 sec Current Inverse time Definite time cha ra cteristics cha ra cteristics ⓒ 2016 Rootech Inc. All Rights Reserved Page 583...

  • Page 584: Timetable For Iec Curve A

    4.705 7.058 9.410 11.76 23.53 19.0 0.115 0.231 0.462 0.692 0.923 1.154 2.308 4.616 6.924 9.232 11.54 23.08 20.0 0.113 0.227 0.453 0.680 0.907 1.134 2.267 4.535 6.802 9.069 11.34 22.67 Page 584 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 585: Characteristic Curve For Iec Curve A

    Accura 2700/2750 User Guide Appendix G Inverse Time Characteristic Curves Characteristic Curve for IEC Curve A Fig G.3 IEC Curve A 0.05 100000 10000 1000 0.01 I / I ⓒ 2016 Rootech Inc. All Rights Reserved Page 585...

  • Page 586: Timetable For Iec Curve B

    1.588 2.382 3.176 3.971 7.941 19.0 0.050 0.075 0.150 0.225 0.300 0.375 0.750 1.500 2.250 3.000 3.750 7.500 20.0 0.050 0.071 0.142 0.213 0.284 0.355 0.711 1.421 2.132 2.842 3.553 7.105 Page 586 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 587: Characteristic Curve For Iec Curve B

    Accura 2700/2750 User Guide Appendix G Inverse Time Characteristic Curves Characteristic Curve for IEC Curve B Fig G.4 IEC Curve B 0.05 100000 10000 1000 0.01 I / I ⓒ 2016 Rootech Inc. All Rights Reserved Page 587...

  • Page 588: Timetable For Iec Curve C

    0.495 0.743 0.991 1.238 2.477 19.0 0.050 0.050 0.050 0.067 0.089 0.111 0.222 0.444 0.667 0.889 1.111 2.222 20.0 0.050 0.050 0.050 0.060 0.080 0.100 0.201 0.401 0.602 0.802 1.003 2.005 Page 588 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 589: Characteristic Curve For Iec Curve C

    Accura 2700/2750 User Guide Appendix G Inverse Time Characteristic Curves Characteristic Curve for IEC Curve C Fig G.5 IEC Curve C 0.05 100000 10000 1000 0.01 I / I ⓒ 2016 Rootech Inc. All Rights Reserved Page 589...

  • Page 590: Timetable For Long Time Inverse Relay

    14.12 21.18 28.24 35.29 70.59 19.0 0.333 0.667 1.333 2.000 2.667 3.333 6.667 13.33 20.00 26.67 33.33 66.67 20.0 0.316 0.632 1.263 1.895 2.526 3.158 6.316 12.63 18.95 25.26 31.58 63.16 Page 590 ⓒ 2016 Rootech Inc. All Rights Reserved...

  • Page 591: Characteristic Curve For Long Time Inverse Relay

    Accura 2700/2750 User Guide Appendix G Inverse Time Characteristic Curves Characteristic Curve for Long Time Inverse Relay Fig G.6 Long Time Inverse 0.05 100000 10000 1000 0.01 I / I ⓒ 2016 Rootech Inc. All Rights Reserved Page 591...

  • Page 592: Appendix H Ordering Information

    AC 220V Digital Input ACB-Unit Protection & Control Module - DI110V AC/DC 110V Digital Input Module Product Name Accura 2750INV Inverter-Unit Voltage Measurement & Control Module Accura 2750VOL Inverter-Unit Voltage Measurement Module Page 592 ⓒ 2016 Rootech Inc. All Rights Reserved...
  • Page 593 Product Name Accura 2750LCG LOP Control Gateway Accura 2750LC LOP Control Module Accura 2750LCI Inverter LOP Control Module Accura 2750LC POW LC Power Module Module Product Name Unit-Socket Unit-Socket Bridge-Socket Bridge-Socket ⓒ 2016 Rootech Inc. All Rights Reserved Page 593...
  • Page 594 Accura 2300/2350, Accura 2300S/2350, Accura 2500/2550, Accura 2700/2750, Accura 3000, Accura 3300E, 주식회사 루텍 Accura 3500/3550/3500E, Accura 3700, Accura 5500, and Accura 7500 are trademarks of Rootech Inc. Contact us for detailed product specifications and ordering information. Information contained herein is subject to 경기도...

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