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AuCom MVH 2.0 Series User Manual

Variable frequency drive
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Variable frequency drive (VFD)
Medium voltage 2.3 kV 13.8 kV
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User Manual
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MVH 2.0 Series
READ THESE INSTRUCTIONS BEFORE USE!

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  • Page 1 Variable frequency drive (VFD) Medium voltage 2.3 kV 13.8 kV User Manual MVH 2.0 Series READ THESE INSTRUCTIONS BEFORE USE!

  • Page 2: Imprint

    © 2023 AuCom Electronics Ltd. All Rights Reserved. As AuCom is continuously improving its products it reserves the right to modify or change the specification of its products at any time without notice. The text, diagrams, images and any other literary or artistic works appearing in this document are protected by copyright.

  • Page 3: Introduction

    MVH 2.0 Series RODUCT IDENTIFICATION Product type: Speed regulation and control of medium voltage three-phase motors Product group: Variable frequency drive (VFD) AuCom MCS GmbH & Co. KG ANUFACTURER Borsigstraße 6 49324 Sendenhorst GERMANY Phone: +49 2526 93880 0 Internet: www.aucom.com...

  • Page 4: Notes On This User Manual

    NTRODUCTION OTES ON THIS ANUAL This document contains important information for safe, effective, and efficient use of the MVH 2.0 variable frequency drive (VFD). The source user manual was written in German language. OURCE ANUAL This user manual is an integral part of the MVH 2.0 product and must always be kept in TORAGE the immediate vicinity of the MVH 2.0 frequency inverter.

  • Page 5: Symbols And Representations

    NTRODUCTION YMBOLS AND EPRESENTATIONS In this user manual, safety and protection levels are classified as DANGER, WARNING, ARNINGS CAUTION and NOTICE. DANGER Warns of an electric shock hazard with a high degree of risk which, if not avoided, may result in death or serious injury. WARNING Warns of an electric shock hazard with a medium degree of risk which, if not avoided, may result in death or serious injury.
  • Page 6 NTRODUCTION DISPOSAL NOTE Indicates the regulations for the disposal of old electrical appliances. To increase the efficiency of this user manual, reference is made to exemplary EFERENCES instructions or further chapters for the description of the same procedure or further information.

  • Page 7: Table Of Contents

    Structure and Functions ..............................37 Principles of the Procedure ............................ 37 Mechanical Structure .............................. 45 3.2.1 ACC AuCom Compact Cabinet: Front Side Service Zone ..............45 3.2.2 AFA AuCom Front Access: Front Side Service Zone ................47 3.2.3 ADA AuCom Double Access: Double Side Service Zone ............... 50 Safety and monitoring equipment ..........................
  • Page 8 ABLE OF ONTENTS 3.5.1 VFD Control Unit Assemblies ......................... 63 3.5.2 I/O Interface Unit (PLC) for Inputs and Outputs ..................69 3.5.3 Operating Unit HMI (Touchscreen) ......................84 Power Cell ................................86 3.6.1 Power Cell Components ..........................86 3.6.2 Power Cell Electrical Operating Principle....................89 3.6.3 Power Cell Control Board .........................
  • Page 9 ABLE OF ONTENTS 5.1.5 Master/Slave Control Functions ......................206 5.1.6 Speed Start / VFD Start at Rotating Motor ..................... 208 5.1.7 Motor Reverse Operation ........................208 5.1.8 MV Mains Failure (MV Loss) ........................215 5.1.9 Motor Overload Protection (Thermal Replica) ..................216 5.1.10 Automatic Ramp Intervention .........................

  • Page 10: List Of Abbreviations

    AFETY IST OF BBREVIATIONS BBREVIATIONS Acronym Description AuCom Compact Cabinet AuCom Front Access AuCom Double Access analog input analog output distributed communication system digital input digital output functional earth fault ride through human machine interface IGBT insulated-gate bipolar transistor inputs/outputs...

  • Page 11: Safety

    This chapter includes al safety-related information for safe use of the product. Technical training is available for all personnel involved in the operation and maintenance AFETY PRECAUTIONS of the equipment. For more information, contact AuCom or your local supplier. VFD C ARNING...

  • Page 12: Target Audience And Qualification

    ARGET UDIENCE AND UALIFICATION The MVH 2.0 Series frequency inverters are intended for use by qualified personnel in commercial areas of various industries where frequency inverters are used to control the speed of three-phase medium voltage motors. This user manual is intended for qualified personnel for the commissioning, operation, and maintenance of this product.

  • Page 13: Safety Instructions

    AFETY This user level requires the entry of the corresponding Operator password. Instructions of are carried out based on this user manual as well as MVH 2.0-specific training on the extended application of the product. The technical personnel have advanced expertise for applications of frequency inverters SER LEVEL NGINEER on the medium voltage level.
  • Page 14 AFETY Only install or remove PCBs und ESD-compliant conditions ➢ (antistatic protection). Tighten screws and other parts according to the specified ➢ torques. Make sure that no metal chips, wire debris and other small parts ➢ can enter the VFD cabinet to prevent damage to the VFD during operation.
  • Page 15 AFETY AINTENANCE AND INSPECTION WARNING Make sure that the VFD output is isolated and earthed before ➢ starting any work on the VFD. If the load can remain in operation while the VFD is being ➢ serviced, you must isolate the VFD from the motor to avoid electrical shock.

  • Page 16: Product Overview

    MPORTANT OTES ON THE RODUCT MVH 2.0 Series frequency inverters for drives with variable speed offer the following solutions for the use of medium voltage motors with regard to: Intelligent control of medium voltage AC synchronous and asynchronous motors •...
  • Page 17 RODUCT VERVIEW Coal mill Mud pump Clinker cooler fan De-scaling pump Kiln drive Oxygen compressor Forced draft fan Light industry Others Gas blower Pump test stand Hydraulic pump VFD power supply test stand Cleaning pump Motor test stand Axial flow pump Wind channel test Compressor Kneading machine...

  • Page 18: Mvh 2.0 Mv Frequency Inverter Overview

    This applies to the following cabinet type: ACC - AuCom Compact Cabinet • Fig. 2-1 Typical integrated VFD cabinet design: ACC-AuCom Compact Cabinet a) Front view b) Rear view Combined Transformer/Power cell cabinet ❶...
  • Page 19 This applies to the following cabinet types: AFA AuCom Front Access, and • ADA AuCom Double Access. • Fig. 2-2 Typical separate VFD cabinet design: AFA-AuCom Front Access a) Front view b) Rear view Transformer cabinet ❶ Cooling fans ❷...
  • Page 20 RODUCT VERVIEW Fig. 2-3 Typical separate VFD cabinet design: ADA-AuCom Double Access a) Front view b) Rear view Transformer cabinet ❶ Cooling fans ❷ Power cell cabinet ❸ Connection/switching panel (MV) ❹ Control panel with operating and display elements (e.g., operating unit (HMI) ❺...

  • Page 21: Hazardous Areas

    RODUCT VERVIEW 2.1.2 AZARDOUS REAS Inside the power cell cabinet, dangerous, high voltages are constantly present at the OWER CELL CABINET corresponding connections and tracks during VFD standby and operation. The power cell cabinet provides cabinet doors for maintenance and repair work. Each door can be locked and has a door contact switch.

  • Page 22: Conformity

    RODUCT VERVIEW 2.1.3 ONFORMITY EU D ECLARATION OF ONFORMITY MVH 2.0 MVH2.0_BA_1.0.0_en 22/254 ANUAL...
  • Page 23 RODUCT VERVIEW ORMS AND TANDARDS Standard Definition IEC 62271-200:2011 high-voltage switchgear and control gear - Part 200: AC metal-enclosed switchgear and control gear for rated voltages above 1 kV and up to and including 52 kV IEC 61439-1:2020 low-voltage switchgear and control gear assemblies - Part 1: General rules IEC 61439-2:2020 low-voltage switchgear and control gear assemblies - Part 2:...

  • Page 24: Labelling Of The Product

    RODUCT VERVIEW 2.1.4 ABELLING OF THE RODUCT LATE All relevant information describing the MVH 2.0 product is summarised on the nameplate. The nameplate is attached to the outside of the VFD cabinet and shows the following information: Fig. 2-4 MVH 2.0 Name plate Company logo of the manufacturer ❶...
  • Page 25 MVH 2.0 product. You can scan the QR code using a camera or a smartphone or a PC/notebook. Once scanned, you are automatically linked to this page on the AuCom website: https://www.aucom.com/contact-us/support-enquiry You can use the above link to submit a support request for further information.
  • Page 26 Ordering option MVH 2.0 ⇒ Cabinet type: ACC = AuCom Compact Cabinet AFA = AuCom Front Access, front side access only ADA = AuCom, Double Access, two-sided access VFD cooling method: A = air-cooled W = water-cooled* Rated current at VFD output I...
  • Page 27 The connected load determines the output current that the VFD ➢ must apply. The above recommendations do not cover all cases of special ➢ loads and motors. Contact AuCom or your local supplier to confirm the model required. RDERING DENTIFIER AND RDERING PTIONS The ordering identifier is shown at the top of table Tab.
  • Page 28 RODUCT VERVIEW Selection of rated voltage at VFD input RDERING IDENTIFIER The following table shows the rated mains supply voltages for the VFD at its input (other rated voltages available on request, contact your local supplier): Rated mains supply voltages U Ordering option Ordering option 2300...
  • Page 29 Each cabinet type is equipped with a control/feeder panel for connecting the mains voltage supply line and the customer s motor feeding line. ACC = AuCom Compact Cabinet This cabinet type is equipped with a combined transformer/power cell panel. The cable entry and cable exit are in the bottom of the control/feeder panel.
  • Page 30 RODUCT VERVIEW ADA = AuCom Double Access This cabinet type is equipped with both, a transformer panel, and a power cell panel. The MV supply line entry and the motor feeding line exit are located at the bottom of the control/feeder panel.

  • Page 31: Product Data

    RODUCT VERVIEW RODUCT 2.2.1 MVH 2.0 EATURES OF THE UNCTIONS MVH 2.0 VFDs are suitable for speed regulation and control of medium voltage three- phase motors. The VFD offers the following functions and features: VFD applications for medium voltage levels from 2.3 kV to 13.8 kV OLTAGE LEVELS Motor speed is controlled via an adjustable frequency range from 0 to 80 Hz.
  • Page 32 RODUCT VERVIEW Enables smooth and seamless switching of the motor between VFD operation and mains YNCHRONOUS TRANSFER operation (with optional synchronous control cabinet). OPERATION VFD double or multi frequency inverter operation (see master/slave settings) ASTER LAVE CONTROL FUNCTIONS You can choose from up to four different motor parameter sets, e.g., for multiple VFD WITCHABLE OTOR operation.

  • Page 33: Dimensions And Weights

    Cooling method of the VFD. • The VFD cabinet dimensions and weight will vary greatly according to the above criteria. The exact specifications are only known when the product code is defined. For detailed information, contact AuCom. 2.2.3 NVIRONMENT NSTALLATION ENVIRONMENT...
  • Page 34 RODUCT VERVIEW Top fan maintenance space: > 1400 mm ❶ Front maintenance space: > 1600 mm ❷ Back maintenance space ❸ Double side service zone: > 1600 mm Single side service zone: > 100 mm MVH 2.0 MVH2.0_BA_1.0.0_en 34/254 ANUAL...

  • Page 35: Technical Data

    Protection class IP30/type 1 Cabinet colours ANSI 61 grey; RAL7035 * Additional communication modules required! Tab. 2-8 MVH 2.0 Technical data NOTE Contact AuCom or your local supplier if you require information beyond this table. 35/254 MVH2.0_BA_1.0.0_en MVH 2.0 ANUAL...

  • Page 36: Scope Of Supply

    RODUCT VERVIEW COPE OF UPPLY 2.3.1 VFD C OOLED ABINETS 1 x VFD cabinet • Number of cooling fans according to cabinet type (the cooling fans are packed • separately for transport) • Number of power cells according to cabinet type (the power cells are packed separately for transport if the rated current of the power cells is at least 250 A) Accessories: •...

  • Page 37: Structure And Functions

    TRUCTURE AND UNCTIONS TRUCTURE AND UNCTIONS Principles of the Procedure To use a medium voltage three-phase motor with infinitely variable speed control, you require a frequency inverter. The frequency inverter s task is to provide the mains voltage according to the motor s U/f control characteristics. In this way, the corresponding operating voltage and frequency is provided for each required motor speed [rpm].
  • Page 38 TRUCTURE AND UNCTIONS voltage systems (R, S, T; constant magnitude and frequency). Each of these three-phase power cell low voltage systems serves as input voltage for a The power cells (Ax, Bx, Cx) represent the power electronics of the VFD, and converts the three-phase AC low voltage systems into controlled, chopped DC voltages.
  • Page 39 TRUCTURE AND UNCTIONS The MVH 2.0 comprises: ENERAL TOPOLOGY BREAKDOWN SCHEME • a multi-level transformer • several power cells • a VFD control system The following figure represents the basic hardware topology of an 11 kV VFD. Fig. 3-3 MVH 2.0 Standard topology for an 11 kV VFD 39/254 MVH2.0_BA_1.0.0_en MVH 2.0...
  • Page 40 TRUCTURE AND UNCTIONS MV mains voltage supply ❶ Multi-level transformer ❷ Power cells ❸ VFD control system: ❹ -Main control unit ❺ -Interface unit (PLC) for inputs and outputs (I/O) ❻ -Operating unit (HMI) with touchscreen ❼ Current measurement at VFD output ❽...
  • Page 41 TRUCTURE AND UNCTIONS Fig. 3-4 Main circuit Example: Voltage formation at 3.3 kV VFD output A chopped DC voltage is applied to the output terminals (L1 and L2) of each power cell. Series connection of the power cell outputs per phase leads to a superposition of the power cell output voltages, which form the phase voltage for each phase.
  • Page 42 TRUCTURE AND UNCTIONS Fig. 3-5 Three-phase AC voltage system at VFD output A, B, C In this connection, the following phase voltages U are formed: • Phase A: U • Phase B: U Phase C: U • And the corresponding line-to-line voltages U •...
  • Page 43 TRUCTURE AND UNCTIONS V-VFD Five power cells providing a nominal voltage of 690 V each are connected in series per XAMPLE phase to obtain a phase voltage of 3450 V and a line-to-line voltage of 6 kV. Fig. 3-6 Voltage stacking diagram 6 kV VFD Phase voltage (3460 V) ❶...
  • Page 44 TRUCTURE AND UNCTIONS In a 6 kV VFD with five power cells connected in series, there are 11 output levels (-5 to 0 and 0 to +5). The following figure shows for one phase the waveform of the output per power cell, as well as the waveform of the resulting total phase voltage (series connection of the power cells) at the VFD output.

  • Page 45: Mechanical Structure

    Fig. 3-10 Waveform of the VFD output current Mechanical Structure In the following sections, we describe the most important assemblies of the various MVH 2.0 series cabinet types, including their front, side, and rear views. 3.2.1 ACC A OMPACT ABINET...
  • Page 46 Cable duct for customer MV supply line ⓭ Main contactor ⓮ Connection to motor feeder line ⓯ Fig. 3-12 ACC-AuCom Compact Cabinet a) Rear view b) Side view: combined power cell/transformer cabinet Connection terminals for customer MV supply line ❶ MV disconnector/earthing switch ❷...

  • Page 47: Afa Aucom Front Access: Front Side Service Zone

    TRUCTURE AND UNCTIONS 3.2.2 AFA A RONT CCESS RONT ERVICE Fig. 3-13 AFA-AuCom Front Access Front view Cooling fans for the VFD cabinet ❶ Frame of the transformer cabinet ❷ Multi-level transformer ❸ Frame of the power cell cabinet ❹...
  • Page 48 TRUCTURE AND UNCTIONS Fig. 3-14 AFA-AuCom Front Access Side view a) Side view left: transformer cabinet b) Side view right: VFD control/feeder panel Cable glands: MV transformer supply line ❶ Multi-level transformer ❷ Cable glands ❸ Mechanical drive shaft for MV disconnector/earthing switch ❹...
  • Page 49 TRUCTURE AND UNCTIONS Fig. 3-15 AFA-AuCom Front Access Rear view Optional cable entry: MV supply line from above (customer side) ❶ Cable connection for MV supply line (customer side) ❷ MV disconnector/earthing switch ❸ Installation compartment for voltage measurement, power cell detection and ❹...

  • Page 50: Ada Aucom Double Access: Double Side Service Zone

    TRUCTURE AND UNCTIONS 3.2.3 ADA A OUBLE CCESS OUBLE ERVICE Fig. 3-16 ADA-AuCom Double Access Front view Cooling fans for the VFD cabinet ❶ Frame of the transformer cabinet ❷ Multi-level transformer ❸ Frame of the power cell cabinet ❹...
  • Page 51 TRUCTURE AND UNCTIONS Fig. 3-17 ADA-AuCom Double Access Side view a) Side view left: transformer cabinet b) Side view right: VFD control/feeder panel Cable glands: MV transformer supply line ❶ Multi-level transformer ❷ Cable glands ❸ Mechanical drive shaft for MV disconnector/earthing switch ❹...
  • Page 52 TRUCTURE AND UNCTIONS Fig. 3-18 ADA- AuCom Double Access Rear view Cable connection: MV supply line (customer side) ❶ MV disconnector/earthing switch ❷ Installation compartment for voltage measurement, power cell detection and ❸ precharge system resistors Power cells on the rear for phases A, B and C ❹...

  • Page 53: Safety And Monitoring Equipment

    TRUCTURE AND UNCTIONS AFETY AND MONITORING EQUIPMENT 3.3.1 EMERGENCY STOP In case of danger to persons or damage to system parts caused by the supply of electrical WITCH OF IN AN EMERGENCY EMERGENCY STOP energy to the VFD, the MVH 2.0 provides an feature for your safety.
  • Page 54 TRUCTURE AND UNCTIONS Connection terminals on the customer side ❶ Terminal block on the customer side (e.g., MV circuit breaker) ❷ Customer s EMERGENCY STOP button ❸ VFD EMERGENCY STOP button ❹ Certified safety relay of the VFD ❺ Main contacts of safety relay ❻...

  • Page 55: Cabinet Door Interlockings

    TRUCTURE AND UNCTIONS 3.3.2 ABINET DOOR NTERLOCKINGS DANGER Danger due to electric shock! There is a risk of death or injury from electric shock if you come in contact with live parts in the power cell/transformer cabinet. Dangerous residual voltage (capacitors) can still be present at the terminals of the power cells after the VFD has been switched off.

  • Page 56: Crank Access Interlock For Disconnector/Earthing Switch

    TRUCTURE AND UNCTIONS You can only unlock any cabinet door when the door interlocking is enabled. The release OOR INTERLOCKING RELEASE signal is only enabled by the VFD control system if the MV main supply is switched off. For this, the upstream MV main switching element must be switched off, and the disconnector/earthing switch must be in earthing position.
  • Page 57 TRUCTURE AND UNCTIONS Fig. 3-21 Crank access interlock a) Key switch: interlocking position b) Crank access interlocked Ensure you meet all preconditions (plant-specific) before inserting the crank handle into the crank access. You can then turn the key switch into the unlocked position. Once the key switch is in unlocked position, it releases an electro-mechanical latch, so that the locking plate can be pushed upwards.

  • Page 58: Earthing Concept Of Mvh 2.0

    TRUCTURE AND UNCTIONS 3.3.4 MVH 2.0 ARTHING ONCEPT OF MVH 2.0 earthing concept includes bot, the protective earthing (PE) as well as functional ROTECTIVE ARTHING earthing (FE) of the VFD. UNCTIONAL ARTHING Protective earthing (PE) prevents the risk of injury from electric shock due to dangerous touch voltages on conductive parts of the frequency inverter that must not carry voltage.
  • Page 59 TRUCTURE AND UNCTIONS All relevant, electrical auxiliary components must be connected to the base plate of the ARTHING OF AUXILIARY low voltage compartment ❼ in the control/feeder panel. The base plate is connected to COMPONENTS the earthing rail ❻ via a fine-core earthing cable. The shielding of the motor feeder line ❿...

  • Page 60: Multi-Level Transformer

    TRUCTURE AND UNCTIONS ULTI EVEL RANSFORMER The VFD draws its energy from the medium voltage grid via the multi-level transformer. On the one hand, the transformer is used to galvanically isolate the voltage system generated by the VFD form the feed-in grid. On the other hand, the transformer provides low voltage energy for each power cell of the VFD via its secondary windings (extended delta connection).
  • Page 61 TRUCTURE AND UNCTIONS Primary winding ❶ Secondary windings ❷ Auxiliary winding ❸ The main-side medium voltage is connected to terminals 1U, 1V, 1W of the multi-level transformer via the upstream MV switching element. Fig. 3-26 4,16 kV multi-level transformer Connection to the MV mains supply Connection terminals of transformer primary winding ❶...
  • Page 62 NOTE The multi-level transformer is a basic component of the tested and certified VFD. AuCom cannot assume responsibility for customer- specific modifications to the tested and approved standard version of the MVH 2.0. Any modification requires new type testing and certification.

  • Page 63: Vfd Control System

    TRUCTURE AND UNCTIONS VFD C ONTROL YSTEM The MVH 2.0 control system consists of: VFD control unit a microprocessor-controlled (control and regulation) based on • modular assemblies operating unit (HMI) • with touchscreen, and I/O interface unit • based on a programmable logic controller (PLC) as an integral part of the VFD system, an upper and lower terminal board for connecting signal lines for digital and analog inputs and outputs.
  • Page 64 TRUCTURE AND UNCTIONS Fig. 3-29 VFD control unit assemblies Front view FO assembly AP1 (phase A power cell) ❶ FO assembly AP2 (phase B power cell) ❷ FO assembly AP3 (phase C power cell) ❸ Main processor assembly AP4 ❹ Power supply assembly AP5 ❺...
  • Page 65 TRUCTURE AND UNCTIONS Each FO module communicates with all power cells of the corresponding phase of the VFD voltage system: • Transmit (T): Pulse-width modulated (PWM) control signal to the IGBTs of the power cells. Receive (R): Status signals of the power cells or an error code signal in the event •...
  • Page 66 TRUCTURE AND UNCTIONS NOTE Design of the FO modules depends on the number of power cells required in the VFD. ONTROL OARD main control board is composed of the following two parts: TRUCTURE AND FUNCTION • DSP subsystem Digital Signal Processor (DSP) processes: o the motor control algorithms, o the power cell fault diagnosis,...
  • Page 67 TRUCTURE AND UNCTIONS OWER UPPLY OARD In addition to generating the power used by the controller, the power board also has an TRUCTURE I/O interface and speed encoder interface. • Generation of + 5 V, ± 15 V power for the power supply to the main control board AP4, UNCTION fibre optic boards AP1, AP2, AP3, and signal board AP6 Digital signal transmission in VFD system...
  • Page 68 TRUCTURE AND UNCTIONS IGNAL OARD The signal board AP6 collects the input/output voltage and current signals of the VFD, TRUCTURE AND FUNCTION performs analog-to-digital conversion on the collected signals, then sends them to the main control board AP4. ERMINALS Terminal Description Phase A input voltage signal Phase B input voltage signal...

  • Page 69: I/O Interface Unit (Plc) For Inputs And Outputs

    TRUCTURE AND UNCTIONS 3.5.2 I/O I (PLC) NTERFACE NPUTS AND UTPUTS VERVIEW The I/O interface unit is composed of a programmable logic controller (PLC), an upper TRUCTURE terminal board with terminal blocks for input signals, and a lower terminal board with terminal blocks for output signals.
  • Page 70 TRUCTURE AND UNCTIONS • 24 digital inputs (DI), 16 digital outputs (DO), • 4 analog inputs (AI), and • • 4 analog outputs (AO). The S7-1200 SMART CPU module is equipped with an Ethernet interface as standard, OMMUNICATION supports Siemens S7 protocol, TCP/IP protocol, and effectively supports a variety of terminal connections.
  • Page 71 TRUCTURE AND UNCTIONS Fig. 3-35 I/O interface unit connection diagram 71/254 MVH2.0_BA_1.0.0_en MVH 2.0 ANUAL...
  • Page 72 TRUCTURE AND UNCTIONS Legend for the above figure : actuated contact ⇒ E24V+ : decoupled supply voltage Reverse : Function and operation of these digital inputs depends on settings of parameters release Remote START/STOP: DI mode : Active control signals are performed redundantly according to IEC standard : Speed sensor PPER ERMINAL...
  • Page 73 TRUCTURE AND UNCTIONS NOTE Digital input signals must be potential-free. If several digital ➢ inputs are used, you can use the E24 V potential as root. Signal for DI External RESET as the same function as the ➢ RESET operating unit (HMI) button.
  • Page 74 TRUCTURE AND UNCTIONS Terminal Terminal DI name DI switching logic/ Description of DI function block Signal mode Level signal ⇒ The VFD output is released (e.g., the start command for the motor can be sent). The signal contact must be closed for VFD operation.
  • Page 75 TRUCTURE AND UNCTIONS Terminal Terminal DI name DI switching logic/ Description of DI function block Signal mode DI inactive (signal contact open): ⇒ The external excitation system is not ready to start the excitation process Excitation system ON external excitation system Open-circuit principle, Feedback signal from Level signal...
  • Page 76 TRUCTURE AND UNCTIONS Terminal Terminal DI name DI switching logic/ Description of DI function block Signal mode Fault: Door alarm transformer message cabinet is issued and the VFD switches off! Open cabinet ⇒ for setting the parameters: door: Selection Alarm/Fault = Alarm Alarm: Door alarm transformer message cabinet...
  • Page 77 TRUCTURE AND UNCTIONS Terminal Terminal DI name DI switching logic/ Description of DI function block Signal mode DI active ( : internal signal contact closed, : +24 V DC): ⇒ MV not ready, medium voltage is not connected DI inactive ( : internal signal contact open, : 0 V): ⇒...
  • Page 78 TRUCTURE AND UNCTIONS OWER ERMINAL OARD The lower terminal block is used to connect: • the VFD status output signals, the upstream MV switching element, • the analog inputs and outputs, • • signal lines of main control board AP5, and a fieldbus system (DCS) to the communication interface RS485 (Modbus).
  • Page 79 TRUCTURE AND UNCTIONS Terminal Terminal DO name Specification DO operating conditions block Normal • all power cells show power cell status Normal • all power cells show cell bypass unit status • the VFD is put in operation by a START command. Relay contacts (NO) open •...
  • Page 80 TRUCTURE AND UNCTIONS Terminal Terminal DO name Specification DO operating conditions block Fan ON 1 8 A, 250 V AC Relay contacts (NO) close VFD mode = Operation Fans ON • if is set and DI (-XS2:3) is active while the VFD is in operation, or VFD mode = Test •...
  • Page 81 TRUCTURE AND UNCTIONS Terminal Terminal DO name Specification DO operating conditions block Relay contact (NO) opens • if medium voltage is switched off (intended control command) or Fault Alarm • any is active For parameter setting VFD mode = Test applies: Relay contact (NO) closes •...
  • Page 82 TRUCTURE AND UNCTIONS analog inputs and outputs (AI, AO) Below are the terminals for on the lower terminal strip blocks: Terminal Terminal AI or AO name AI or AO Description of AI or AO function block specification -XS16 Power supply Supply voltage for lower terminal blocks +24 V DC n.a.
  • Page 83 TRUCTURE AND UNCTIONS Terminal Terminal AI or AO name AI or AO Description of AI or AO function block specification Meas. range end ≙ 20 mA Meas. scale start ≙ 0 A Rated Meas. scale end ≙ 150 % of parameter output current Cell cabinet temperature •...

  • Page 84: Operating Unit Hmi (Touchscreen)

    TRUCTURE AND UNCTIONS 3.5.3 HMI (T PERATING OUCHSCREEN To operate the VFD locally (on site), the VFD provides an operating unit (HMI). The HMI is TRUCTURE installed in the cabinet door on the VFD control/feeder panel. The HMI is equipped with a resistive touchscreen, terminals for connecting the power supply and various interfaces for communication with the peripherals and the VFD control system.
  • Page 85 TRUCTURE AND UNCTIONS Touchscreen with transparent, removable protective film ❶ Sealing lip between HMI and control panel ❷ HMI power supply 24 V DC ❸ (COM: D-SUB 9-pole; plug: not used) ❹ HMI hardware version ❺ (USB2: not used) ❻ USB1 ❼...

  • Page 86: Power Cell

    TRUCTURE AND UNCTIONS OWER power cells in the VFD are basic components for generating the voltage system at the VFD output. The following sections explain the mechanical and electrical structure of the power cells. Fig. 3-38 Typical power cell Power cell ❶...
  • Page 87 TRUCTURE AND UNCTIONS Fig. 3-39 Power cell 690 V Typical front view Power cell output (terminal: L1) ❶ Front mounting handle ❷ Power cell output (terminal: L2) ❸ Heat sink ❹ Power cell name plate ❺ Fuses ❻ Power cell input (terminals: R, S, T) ❼...
  • Page 88 TRUCTURE AND UNCTIONS OWER CELL COMPONENTS REAR SIDE Fig. 3-40 Power cell 690 V Typical rear view Rear mounting handle ❶ Test interface (manufacturer only!) ❷ Rear mounting points ❸ The cells in the cabinet have identical electrical and mechanical parameters and are interchangeable.

  • Page 89: Power Cell Electrical Operating Principle

    TRUCTURE AND UNCTIONS 3.6.2 OWER LECTRICAL PERATING RINCIPLE The figure below illustrates the electrical topology of a power cell. Fig. 3-41 Electrical schematic diagram of a power cell Rectifier ❶ DC bus ❷ Inverter ❸ Optional power cell bypass: contactor ❹...

  • Page 90: Power Cell Control Board

    TRUCTURE AND UNCTIONS When Q1 and Q4 are switched on, the power cell voltage is equal to the DC bus voltage. negative When Q2 and Q3 are switched on, the power cell output voltage is equal to the DC bus voltage. A correspondingly high clocking of the control signals produces a square-wave voltage at OWER CELL OUTPUT L1, L2...
  • Page 91 TRUCTURE AND UNCTIONS Power supply ❶ Overvoltage detection (limit value: 1150 V) ❷ Overtemperature detection ❸ Loss of phase detection ❹ Error coding logic ❺ Power supply failure ❻ Fibre optic (FO) failure ❼ Receive decoding ❽ Bypass drive ❾ DC voltage input AC voltage output (max.

  • Page 92: Power Cell Gate Drive Board

    TRUCTURE AND UNCTIONS 3.6.4 OWER RIVE OARD The following figure shows the operating principle of the power cell control board: Fig. 3-44 Power cell gate drive board Fig. 3-45 Power cell gate drive board principle diagram DRCM: Drive control module for IGBT Q1 ❶...

  • Page 93: Operating And Display

    PERATING AND ISPLAY PERATING AND ISPLAY VERVIEW All components used for the operation, display and setting of the VFD are detailed in the following sections. Fig. 4-1 Operating and display components Operating unit (HMI) with touchscreen ❶ Operating indicators for the switch positions of the main contactor and the ❷...

  • Page 94: Alarm Indications

    PERATING AND ISPLAY LARM NDICATIONS The VFD reports faults of low severity as alarm events. Alarms do not switch off the VFD alarm messages operation. Depending on the chosen operating mode, are signalled as follows: Local control (HMI) alarm event •...

  • Page 95: Mv Main Switch Element (Medium Voltage)

    PERATING AND ISPLAY crank handle into the crank access at the front of the control/input panel. Fig. 4-4 Operating elements for disconnector/earthing switch a) Key switch to enable crank access b) unlocked crank access c) crank handle Disconnector/Earthing switch The switch positions of the are indicated by the two Disconnector Open (Earthed) Disconnector Closed (Live)

  • Page 96: Start/Stop Buttons On The Hmi

    PERATING AND ISPLAY Fig. 4-6 Status indictors for main switch element 4.3.4 START/STOP B UTTONS ON THE You can switch the motor on and off manually in the Local control (HMI) operating mode VFD monitor using the START and STOP buttons on the screen. The buttons are in the menu.

  • Page 97: Fault Indications

    PERATING AND ISPLAY For all Operating modes Parallel to the reset options of the individual operating • fault messages modes, you can reset , reset the control unit EMERGENCY STOP safety and reset the relay RESET door pushbutton using the on the door of the control/feeder panel: Fig.

  • Page 98: Operating Unit (Hmi)

    PERATING AND ISPLAY Remote control (DI) • The corresponding digital outputs (AO) of the I/O interface unit for the active fault are activated and are either reported via digital inputs (DI) of the I/O interface unit or generated by the VFD control unit. CHAPTER REFERENCE To determine the causes of active fault events and to resolve them, ➢...

  • Page 99: General Operating Instructions

    PERATING AND ISPLAY ENERAL PERATING NSTRUCTIONS 4.5.1 VFD ON OFF (S WITCHING THE TANDBY To operate the VFD in real application (start/stop and motor control), you must first switch ready-to-start on the VFD to gain the (standby) state Once the VFD operation is complete (motor STOP), you can switch off the VFD to exit the Ready-to-start (standby) state NOTICE...
  • Page 100 PERATING AND ISPLAY Main Contactor Disconnector/Earthing switch STEP 11: Check status indicators for and correct the following switch positions if necessary: Disconnector Closed (Live) green = ON (status indicator is • Disconnector Open (Earthed) • = OFF (status indicator is Main Contactor Closed •...
  • Page 101 PERATING AND ISPLAY operating unit (HMI) • heating • fans • Ready-to-start state ⇒ VFD is now disabled. 101/254 MVH2.0_BA_1.0.0_en MVH 2.0 ANUAL...

  • Page 102: Start Page And Standby Page

    PERATING AND ISPLAY 4.5.2 TART PAGE AND TANDBY PAGE VFD Monitor start page After switching on the VFD, the menu is displayed as the . If the touchscreen is inactive (not touched) for a settable time, the display switches to the standby page deactivated (if this was set via parameter).
  • Page 103 PERATING AND ISPLAY Buttons to select the various main menus on the first menu level AIN MENU Main display area, including display of main parameter settings, measured values, VFD OPERATIONAL operating status, VFD start/stop control, etc. INFORMATION When a fault is active, the left array of the information status bar changes to a LARM...
  • Page 104 PERATING AND ISPLAY Medium voltage (MV) supply status indication READY ➢ If medium voltage is switched on, the LED is red. ➢ If medium voltage is switched off, the LED is grey. Fig. 4-15 MV switched on VFD Ready-to-start (standby) status indicator READY ➢...

  • Page 105: Menu Structure

    PERATING AND ISPLAY 4.5.3 TRUCTURE The software menu of the VFD control unit is divided into menu levels. menu structure The following figure shows the in the display of the operating unit (HMI). Menu level 1 Menu level 2 Menu level 3 VFD Monitor Trend recorder Parameter setup...

  • Page 106: Menu Navigation

    PERATING AND ISPLAY 4.5.4 AVIGATION You can operate and set the VFD using the touchscreen. You can: enter or exit a main menu or submenu (navigating between menus on the same • menu level or different menu levels) • call up different menu pages within a menu (navigation on the same menu level) The touchscreen uses virtual buttons, which can be used as: Direct selection keys •...

  • Page 107: User Levels

    AuCom MCS GmbH & Co.KG NOTE Operator Engineer user level You can select via the ➢ touchscreen, then enter the password when prompted. Manufacturer If user level is required, contact AuCom MCS GmbH ➢ & Co.KG. 107/254 MVH2.0_BA_1.0.0_en MVH 2.0 ANUAL...
  • Page 108 PERATING AND ISPLAY access level The following table shows the required for each menu. User level Menu level 1 Menu level 2 Menu level 3 Standard VFD Monitor Standard, Operator, Trend recorder Engineer Standard Parameter setup Operator, Engineer Change user level Engineer Inverter parameters 1 Engineer...
  • Page 109 PERATING AND ISPLAY Changing the user level Depending on the user s access level, a corresponding password entry is required to change the user level. Username Authorisation Password (6 digits) Standard very low none Operator 123456 Engineer high 300048 Manufacturer highest Tab.
  • Page 110 PERATING AND ISPLAY Fig. 4-27 Password entry screen STEP 3: Tap to open the dropdown menu. ELECT USERNAME ➢ Open dropdown menu shows the available usernames: Fig. 4-28 Username Open dropdown menu Engineer STEP 4: Select ELECT USERNAME NGINEER Engineer ➢...
  • Page 111 PERATING AND ISPLAY STEP 5: Enter the valid password for the Engineer user level using the numeric keypad. NTER PASSWORD ➢ As you enter each individual digit of the password, the circles above the numeric keypad are highlighted in blue. Fig.

  • Page 112: Changing Parameter Settings (General)

    PERATING AND ISPLAY 4.5.6 HANGING ARAMETER ETTINGS ENERAL For correct and safe operation of the VFD, the control must be adapted to the general parameters parameter conditions of the various applications. This is done by setting the groups on the HMI. You can set the MVH 2.0 parameters using: •...
  • Page 113 PERATING AND ISPLAY Fig. 4-32 Inverter parameters 1 START mode Dropdown menu for setting the options for the START mode parameter ❶ STEP 3: Tap to the dropdown menu. NTER DROPDOWN MENU FOR MODE PARAMETER ➢ The dropdown menu shows its setting options. Fig.
  • Page 114 PERATING AND ISPLAY Fig. 4-34 Selected setting option: Speed start Button for saving the parameter settings ❶ STEP 5: Tap Parameter download button. AVE CHANGES successful ➢ If the storage is , the following message appears in the display for approx. 1.5 s: Fig.
  • Page 115 PERATING AND ISPLAY ARAMETER SETTING VIA NUMERIC KEYPAD TO SET A VALUE System date time INSTRUCTION (example) Setting the Standard TART SER LEVEL Fig. 4-36 System time parameter group Year STEP 1: Tap the white field next to the parameter to set the current year.
  • Page 116 PERATING AND ISPLAY Fig. 4-40 System time Settings completed System settings STEP 5: Tap OK in the menu. AVING PARAMETER SETTINGS ➢ The updated system time appears in the upper right corner of the HMI display. Fig. 4-41 ARAMETER SETTING VIA DIRECT BUTTON TO TOGGLE BETWEEN TWO SETTINGS INSTRUCTION (example) Enable/Disable...

  • Page 117: Selecting The Menu Language

    PERATING AND ISPLAY STEP 3: Tap the disable button ISABLE TANDBY PAGE enable Standby page deactivated ➢ The grey button indicates that the again (and can activated by taping on it). Fig. 4-44 Standby page disabled 4.5.7 ELECTING THE ANGUAGE You can display the HMI menu in the following languages: German •...
  • Page 118 PERATING AND ISPLAY NOTE Setting the menu language only affects the HMI to save this setting in the VFD control unit. MVH 2.0 MVH2.0_BA_1.0.0_en 118/254 ANUAL...

  • Page 119: Main Menu (Hmi)

    PERATING AND ISPLAY (HMI) 4.6.1 : VFD M AIN MENU ONITOR VFD Monitor The start page of the HMI displays the menu. This menu shows the system status, the most important parameter settings, and the current operating measured values of the VFD as well as the buttons for operating the VFD. ...
  • Page 120 PERATING AND ISPLAY Operating mode = Local control (HMI) For the , you can start and stop the motor manually ANUAL OPERATION VFD mode = via the touchscreen. The START and STOP buttons are available for both Operation VFD mode = Test RESET You can be reset alarm/fault messages manually using the button.
  • Page 121 PERATING AND ISPLAY The settings of the following parameters provide an overview of the most important ISPLAY OF THE MAIN system settings of the VFD: PARAMETER SETTINGS Parameter name Description VFD mode Operation Test VFD working mode: START mode Motor start-up mode STOP mode Motor stop mode Setpoint mode...

  • Page 122: Main Menu: Trend Recorder

    PERATING AND ISPLAY 4.6.2 REND ECORDER Trend curves show the development of measured variables of the VFD over time. The trend curves are displayed as: • real-time curve, or curve history. • rms values output current output voltage are given for the measured variables URVE Refresh If you tap the...
  • Page 123 PERATING AND ISPLAY Fig. 4-49 Scaling of the displayed time frame (x-axis) Start time of the displayed time frame ❶ End time of the displayed time frame ❷ Time frame for displaying the trend curves ❸ When you tap on the diagram area, a vertical black line appears as a sliding marker on the LIDING MARKER AND time axis (x-axis).
  • Page 124 PERATING AND ISPLAY Fig. 4-50 Trend recorder Settings menu Settings menu: setting the start and end time for recording the curve history ❶ X-axis settings : scaling of the displayed time frame ❷ Y-axis settings : scaling of the displayed trend curves ❸...
  • Page 125 PERATING AND ISPLAY Parameter description ETTINGS MENU Parameter: Start time start time data recording Export curve This parameter defines the of the for the function history Setting via keypad CHAPTER REFERENCE For parameter setting, see chapter 4.5.6 Changing Parameter ➢ Settings (General) Fig.
  • Page 126 PERATING AND ISPLAY • the output current, and the output voltage • Settings via numeric keypad CHAPTER REFERENCE For parameter setting, 4.5.6 Changing Parameter ➢ Settings (General) NOTE -1e+10 (e-notation) Fig. 4-54 Numeric keypad - RUN frequency = -10 (potency notation) = -10 000 000 000 (decimal notation) Fig.
  • Page 127 PERATING AND ISPLAY Parameter: (Output voltage:) Min. (and) Max. Min. Max. range displayed value scale parameters define the for the of the VFD output voltage on the Y-axis. Settings via numeric keypad CHAPTER REFERENCE For parameter setting, 4.5.6 Changing Parameter ➢...
  • Page 128 PERATING AND ISPLAY enabled disabled ARAMETER OVERVIEW Parameter name Setting value Setting range (Default setting) or setting options Recent time (Numerical value) Unit] (Unit-dropdown menu) Hour Second / Minute / Hour / Day / Month / Year Fixed time (Dropdown menu) Today Today / This month /...
  • Page 129 PERATING AND ISPLAY Symbol Shift direction Amount of time segment per tap to the left The full is set displayed to the left Half of the set is displayed to the left One fifth of the set is displayed to the right One fifth of the set is displayed to the right Half of the set is displayed...
  • Page 130 PERATING AND ISPLAY Fig. 4-61 Zooming on the rms values (Y-axis) a) Initial position of the sliders b) Upper slider moving downwards c) Lower slider moving upwards Minimum value of a trend curve (zero line) ❶ Maximum value of a trend curve ❷...
  • Page 131 PERATING AND ISPLAY If you move the slider at max. shift (1/5 of the total time frame) to the right , it will decrease the time frame by 24 seconds. Moving the right slider to the left • left If you move the slider at max. shift (1/5 of the total time frame) to the , it will increase the time frame by 24 seconds.
  • Page 132 PERATING AND ISPLAY URVE ISTORY When you tap the STOP button, the display shows the curves of the VFD measured variables up to the time when the STOP button was pressed. Fig. 4-63 Trend curves: curve history Button to export (save) curve history ❶...
  • Page 133 PERATING AND ISPLAY INSTRUCTION Export curve history (Standard) TART SER LEVEL STEP 1: Insert the USB-A memory stick (max. memory size: 4MB) into the USB1 port on ONNECT EXTERNAL MEMORY the HMI. Fig. 4-64 USB-A interface for external memory STEP 2: Tap the Settings button.

  • Page 134: Main Menu: Parameter Setup

    PERATING AND ISPLAY 4.6.3 ARAMETER ETUP Parameter setup menu provides all the parameters required to set the VFD for the specific application. The settable parameters are divided into three categories: • VFD (inverter) parameters Parameters related to the motor in the application •...
  • Page 135 PERATING AND ISPLAY Parameter name ❶ Drop down menu with a list of options ❷ Entry field to set a value ❸ Current menu page / total number of pages in the menu ❹ Parameter upload Button ❺ Parameter download Button ❻...
  • Page 136 PERATING AND ISPLAY NVERTER ARAMETERS Fig. 4-69 Main menu: Parameter setup Inverter parameters 1 ARAMETER OVERVIEW Setting value Setting range Parameter name Unit (Default setting) or setting options VFD applications VFD type ASYNC Motor U/f ASYNC Motor U/f / ASYNC VC with sensor / SYNC Motor U/f / SYNC VC with sensor / ASYNC VC without Sensor /...
  • Page 137 PERATING AND ISPLAY Setting value Setting range Parameter name Unit (Default setting) or setting options Start frequency .0 Hz Frequency range for VFD operation Maximum frequency 50.00 00.00 .00 Hz Minimum frequency 00.00 .00 Hz VFD rated vales Rated input voltage 6000 Rated output voltage 6000...
  • Page 138 PERATING AND ISPLAY Synchronous motor, vector control with rotor position sensor (pole wheel angle feedback) SYNC VC with sensor Asynchronous motor, vector control without speed sensor ASYNC VC without sensor Synchronous motor, vector control with rotor position sensor SYNC VC without sensor CHAPTER REFERENCE For further information on excitation settings, see chapter 4.6.6 ➢...
  • Page 139 PERATING AND ISPLAY relative stator resistance R is a referred value determined by the VFD according UTOMATIC MOTOR to the following formula: PARAMETER IDENTIFICATION √ Absolute where: [Ω]: value of the stator resistance per phase (quotient of measured phase voltage and measured phase current) Relative value of the stator resistance per phase, related to the stator resistance, which is determined from the nominal data of the...
  • Page 140 PERATING AND ISPLAY ASTER LAVE OPERATION Parameter: Master/Slave operation Master/Slave operation This parameter enables/disables Setting options: Master/Slave operation is disabled. Disable Master/Slave operation is enabled. Enable CHAPTER REFERENCE For the master/slave operation, communication via fibre optic cable (FO) between the master VFD and the slave VFD is necessary. The fibre optic cables are connected to the fibre optic interfaces ➢...
  • Page 141 PERATING AND ISPLAY The VFD ramps up from 0 Hz with the current set in parameter Freq. search current until it experiences a counter-torque. When the counter-torque is detected, it means that the inverter has detected the motor speed and ramps up the motor speed setpoint. relative dimensionless pu value The setting value is entered as a...
  • Page 142 PERATING AND ISPLAY RATED VALES NOTE The following four parameters are set at the factory to match the VFD s specifications. These parameter settings must not be changed! Parameter: Rated input voltage This parameter defines the rated input voltage of the VFD. Setting range: Parameter: Rated output voltage...
  • Page 143 PERATING AND ISPLAY Fig. 4-70 Frequency/time diagram: Acceleration ramp and Deceleration ramp where: VFD output frequency Motor rated frequency (motor rated speed) ❶ Motor ramp-up time Motor ramp-down time NOTE ramp-up time T too short If the motor is set , the VFD may trip on overcurrent Parameter:...
  • Page 144 Incorrect settings may damage the equipment. This parameter is set at the factory to match the specification of ➢ the VFD. Only change this parameter setting after consultation with AuCom! OTOR START Parameter: Torque boost gain amount of torque boost at the VFD output...
  • Page 145 PERATING AND ISPLAY Fig. 4-71 U/f control characteristic with torque boost where: VFD output voltage VFD output frequency Motor rated voltage ❶ Voltage increase ❷ Motor rated frequency ❸ VFD type = SYNC motor U/f • Synchronous motor: 0 Hz < f < 5 Hz (only For synchronous motors, the torque boost gain acts as a...
  • Page 146 PERATING AND ISPLAY Motor rated current = 61 A, • and a absolute starting current Then, the is 36,6 A torque boost gain [%] To determine the at a given starting current, the following results: MVH 2.0 MVH2.0_BA_1.0.0_en 146/254 ANUAL...
  • Page 147 PERATING AND ISPLAY NVERTER ARAMETERS Fig. 4-72 Main menu: Parameter setup Inverter parameters 2 ARAMETER OVERVIEW Setting value Setting range Parameter name (Default setting) or setting options Motor start High torque start* Disable Disable / Enable Torque mode* Disable Disable / Enable Voltage quality VFD output: Disable...
  • Page 148 PERATING AND ISPLAY NOTICE Incorrect settings may damage the equipment. This parameter is set at the factory to match the specification of ➢ the VFD. Generally, it is not necessary to change this parameter setting. Setting options: ordering identifier 12 This setting is used when the option for in the product code.
  • Page 149 PERATING AND ISPLAY OTOR ARAMETERS  Fig. 4-73 Main menu: Parameter setup Motor parameters 1 ARAMETER OVERVIEW Setting value Parameter name Unit Setting range (Default setting) Motor rated values Motor rated frequency 50.00 .00 Hz Motor rated voltage 6000 Motor rated speed Motor rated power 1000 Motor rated current...
  • Page 150 PERATING AND ISPLAY Setting value Parameter name Unit Setting range (Default setting) I-time PI-contr. (speed): 5.00 P-gain PI-contr. (speed): 3.00 .00 s I-time PI-contr. (active curr.): 1.00 20.00 P-gain PI-contr. (active curr.): 3.00 50.00 ms I-time Tab. 4-12 Motor parameters 1 - Parameter overview Parameter description: OTOR RATED VALUES Parameter:...
  • Page 151 PERATING AND ISPLAY NOTE motor rated voltage lower is set than the motor nameplate ➢ voltage, the VFD and motor will operate at reduced capacity motor underexcitation motor rated voltage greater is set than the motor nameplate ➢ voltage, it can cause the motor to magnetically saturate, reduce motor over-excitation operating efficiency and increase heating ( Parameter:...
  • Page 152 PERATING AND ISPLAY NOTE If no detailed motor data is available, the VFD can determine the motor Parameter characteristics automatically. To do this, select the option identification 1 Parameter identification 2 START mode for the parameter. Motor idle current Incorrect settings of the can have an influence ➢...
  • Page 153 PERATING AND ISPLAY The synchronisation process is faster , but the transient motor current may be higher during the motor changeover. OTOR DECELERATION Parameter: Motor overexcitation gain You can use this parameter to set a motor overexcitation that is automatically used during a decelerating process.
  • Page 154 PERATING AND ISPLAY integral time magnetic flux controller This parameter defines the of the Setting range: .00 s The following two parameters: CONTROL OF SPEED PI-contr. (speed): Proportional gain • PI-contr. (speed): Integral time • speed control loop control the behaviour of the internal .
  • Page 155 PERATING AND ISPLAY distort Inappropriate parameter settings can the output circuit ➢ waveform. Inappropriate parameter settings can cause the VFD to trip on ➢ motor overcurrent Parameter: PI-contr. (active curr.): P-gain proportional gain active current controller This parameter defines the of the Setting range: Parameter:...
  • Page 156 PERATING AND ISPLAY OTOR ARAMETERS Fig. 4-75 Main menu: Parameter setup Motor parameters 2 ARAMETER OVERVIEW Setting value Parameter name Setting options (Default setting) Speed start Frequency search mode Residual voltage test Residual voltage test / Forward search / Reverse search / Bidirectional search VFD phase sequence Clockwise rotating field /...
  • Page 157 PERATING AND ISPLAY Setting options: A freely coasting motor induces a residual voltage at its terminals due to the residual Residual voltage test magnetism in the stator plate and the still rotating motor shaft. The VFD measures this voltage current frequency phase position and determines its .
  • Page 158 PERATING AND ISPLAY optimise the start-up of different load moments of inertia Use this parameter to . With a high longer magnetic flux load moment of inertia, it can provide a time for the build-up of before the frequency run-up starts. Setting options: long This setting offers a...
  • Page 159 PERATING AND ISPLAY U/f slip compensation function is enabled  Increase of drive load increase ⇒ automatic of output frequency and output voltage • Decrease of drive load ⇒ automatic decrease of output frequency and output voltage • 159/254 MVH2.0_BA_1.0.0_en MVH 2.0 ANUAL...
  • Page 160 PERATING AND ISPLAY UNCTION ARAMETERS These parameters cannot be modified during VFD operation, unless otherwise stated. Fig. 4-76 Main menu: Parameter setup Function parameters 1 ARAMETER OVERVIEW Parameter name Default setting Setting options Default settings Disable / Restore to default Disable Enable settings...
  • Page 161 PERATING AND ISPLAY Parameter name Default setting Setting options Output power factor / Output voltage Motor reverse operation Disable / Release: VFD reverse Disable Enable Preset fixed setpoint frequency Setpoint via DI Speed section 3/ Speed section 3 Speed section 7 VFD operating modes Local control (HMI) / Operating mode...
  • Page 162 PERATING AND ISPLAY The last received frequency setpoint is retained. Last setpoint Parameter: AI 2: f/n Feedback - failure analogue input signal This parameter defines the behaviour of the VFD if the for the actual no longer available speed value (feedback) is during VFD operation.
  • Page 163 PERATING AND ISPLAY OPERATING MODES Parameter: Release: Switch-over (DI) operating mode Remote control This parameter enables/disables the activation of VFD operating mode (DI) Switch-over operating mode via digital input (DI) (terminals -XS1:1,4) of the I/O interface unit (PLC). Fig. 4-77 Block diagram Release for changing over the VFD operating mode via DI Setting options: not released...
  • Page 164 PERATING AND ISPLAY NOTE I/O interface unit (PLC): Level forward START/STOP. Terminals -XS1:1,10 are defined as ➢ Level reverse START/STOP Terminals -XS1:1,9 are defined as ➢ (START or STOP function of the DI depends on positive or negative setpoint). NALOG OUTPUTS Parameter: Analog output AO 1 the measured variable to be transmitted...
  • Page 165 PERATING AND ISPLAY Release for a motor reverse operation is enabled . Reverse running of the motor is Enable possible. RESET FIXED SETPOINT FREQUENCY Parameter: Setpoint via DI mode fixed setpoint for the VFD output This parameter defines the for selecting the frequency binary states Binary coding...
  • Page 166 PERATING AND ISPLAY OPERATING MODE Parameter: Operating mode source for operating the VFD This parameter defines the NOTE Release: This parameter only applies to the parameter setting ➢ Switch-over (DI) operating mode= Disable If parameter ➢ Release: Switch-over (DI) operating mode Enable is set to and parameter...
  • Page 167 PERATING AND ISPLAY If f/n control loop is set to Open loop , the analog setpoint signal ranges from 0 Hz to • the highest permissible frequency. Closed loop • If f/n control loop is set to , the analog setpoint signal ranges from 0 Hz to 100 %.
  • Page 168 PERATING AND ISPLAY UNCTION ARAMETERS These parameters can be modified during VFD operation, unless otherwise stated. Fig. 4-78 Main menu: Parameter setup Function parameters 2 ARAMETER OVERVIEW Setting value Parameter name Unit Setting range (Default setting) Accuracy of set frequency Resolution of set frequency 0.10 .00 Hz...
  • Page 169 PERATING AND ISPLAY Setting value Parameter name Unit Setting range (Default setting) PID-controller (control loop): 10.00 0.00 P-gain PID-controller (control loop): 10.00 0.00 Min I-time PID-controller (control loop): 0.00 0.00 Min D-time VFD maintenance Filter-cleaning interval days days VFD cooling Fans: Follow-up time * 100 s ≙...
  • Page 170 PERATING AND ISPLAY Fig. 4-79 Frequency skip ranges for the VFD output frequency a) Motor acceleration process b) Motor deceleration process where: VFD output frequency Set frequency Maximum frequency ❶ Upper Skip frequency 2 U ❷ frequency skip range 2 lower Skip frequency 2 L ❸...
  • Page 171 PERATING AND ISPLAY Parameter: Skip frequency 1 L upper second This parameter defines the limit of the frequency range to be skipped. Setting range: 0.00 Hz EASURED VALUE ADJUSTMENT INPUT VOLTAGE Parameter: VFD input voltage: correction factor This parameter defines the correction factor for the measured value of the VFD input...
  • Page 172 PERATING AND ISPLAY For further information, refer to the description of parameter ➢ Setpoint via DI. This parameter cannot be modified during VFD operation. ➢ Parameter: DI: Set frequency f1 fixed setpoint f1 Set frequency 1 This parameter defines the for DI (terminal -XS1:1,7).
  • Page 173 PERATING AND ISPLAY Fig. 4-81 Analog input AI 2 Transfer characteristics: f/n-Feedback Parameter: AI 1 (f/n Setpoint): Meas.range end maximum input signal current This parameter defines the (measured range end) for Setting range: Analog input AI 1 maximum frequency setpoint , that can flow for the set in parameter 10.00...
  • Page 174 PERATING AND ISPLAY f/n PID-controller You can set the via the following three parameters: Parameter: PID-controller (control loop): P-gain Setting range: proportionality coefficient This parameter defines the of the P-control. 0.00 Parameter: PID-controller (control loop): I-time integral time This parameter defines the of the I-control.
  • Page 175 PERATING AND ISPLAY UNCTION ARAMETERS These parameters can be modified during VFD operation, unless otherwise stated. Fig. 4-82 Main menu: Parameter setup Function parameters 3 ARAMETER OVERVIEW Setting value Parameter name Unit Setting options (Default setting) Synchronous transfer Transfer release: Disable Disable / Enable...
  • Page 176 PERATING AND ISPLAY Setting value Parameter name Unit Setting options (Default setting) Profinet Baud rate 9600 Baud 1200 / 4800 / 9600 / 19200 / 38400 VFD address : function buttons Tab. 4-18 Function parameters 3 Parameter overview Parameter description YNCHRONOUS TRANSFER Parameter: Transfer release: VFD<->Grid...
  • Page 177 PERATING AND ISPLAY You can use these buttons switch the fans on and off manually for service and commissioning purposes. NOTE Test Operation The function buttons apply to both VFD modes, ➢ During VFD operation, the VFD system takes over fan control. ➢...
  • Page 178 PERATING AND ISPLAY When opening a door of the cell cabinet or transformer cabinet, the following message is Fault displayed: Fault: Door alarm cell cabinet, or • Fault: Door alarm transformer cabinet • Der VFD is switched off. COOLING Parameter: Message: Clean air filter Alarm: Clean air This parameter enables/disables the display of the reminder message...
  • Page 179 PERATING AND ISPLAY The MVH 2.0 offers different protocol to enable VFD communication within a fieldbus ISTRIBUTED CONTROL SYSTEM (DCS) system (DCS). You can use the following three parameters to adapt the control unit to the desired communication protocol. NOTE cannot These parameters be modified during VFD operation.

  • Page 180: Main Menu: Event Recorder

    PERATING AND ISPLAY 4.6.4 VENT ECORDER Events generated or captured by the VFD are logged by the event recorder as: operating events, • alarm events, or • fault • events. Events are stored according to the FIFO principle (First-In-First-Out). This means that when the maximum number of stored events is reached, the next (newest) event overwrites the oldest.
  • Page 181 PERATING AND ISPLAY For each event entry, the plain text of the message is given in the Event column. The VENTS message indicates the cause of the event, which correlates to either an alarm message, PLAIN TEXT MESSAGES fault operational message, or an message.
  • Page 182 PERATING AND ISPLAY ARAMETER OVERVIEW Parameter name Setting value Setting range (Default setting) or setting options Configure display period All storage data Recent time (Numerical value) Fixed time (Dropdown menu) Today Today / This month / This week / Previous day / Previous month / Previous week Time division point...

  • Page 183: Main Menu: Power Cell Status

    PERATING AND ISPLAY 4.6.5 OWER TATUS This menu shows the status of the existing power cells. Fig. 4-86 Main menu Power cell status Power cells of the corresponding phases A, B and C for the three-phase voltage ❶ system formed at the VFD output. Status displays of each individual power cells for phases A, B and C ❷...

  • Page 184: Main Menu: Other Settings

    PERATING AND ISPLAY 4.6.6 THER ETTINGS Other settings The following figure shows the structure of the main menu. Menu level 1 Menu level 2 Menu level 3 Other settings Other systems Monitoring: Water cooling transformer cabinet Monitoring: Water cooling cell cabinet Monitoring: Cell bypass units Temperature monitoring...
  • Page 185 PERATING AND ISPLAY Menu: Monitoring water cooling transformer cabinet ❶ Menu: Monitoring water cooling cell cabinet ❷ Menu: Monitoring power cell bypass units ❸ Menu: Temperature monitoring ❹ Monitoring water cooling transformer cabinet Menu: Monitoring water cooling cell cabinet Menu: Monitoring power cell bypass units Menu: status...
  • Page 186 PERATING AND ISPLAY self-test Immediately after switching on the VFD, the control unit performs a for each POWER CELL BYPASS UNITS power cell bypass unit . When all power cell bypass units have successfully completed the SELF TEST self-test, the VFD switches to standby mode. In the event of a failed self-test or failure of the bypass unit of a power cell during Alarm: Power cell bypass operation, the VFD displays the message...
  • Page 187 PERATING AND ISPLAY Fig. 4-90 Temperature monitoring Settings Parameter description OTOR RANSFORMER Parameter: Name Use this parameter to edit the temperature sensor s message to be displayed. Editing via keypad CHAPTER REFERENCE 4.5.6 Changing Parameter ➢ Settings (General) Fig. 4-91 Editing via keypad Alarm Fault...
  • Page 188 PERATING AND ISPLAY Parameter: Alarm overtemperature limit alarm This parameter defines the for the output of an message. Setting via numeric keypad CHAPTER REFERENCE 4.5.6 Changing Parameter ➢ Settings (General) Fig. 4-93 Parameter setting via numeric keypad Parameter: Fault overtemperature limit fault This parameter defines the for the output of a...
  • Page 189 PERATING AND ISPLAY The shortcut button is disabled enabled The shortcut button is RECHARGE YSTEM (Description will follow.) XCITATION YSTEM synchronous When powering motors, the VFD provides the following excitation adjustment functions: startup sequence • Change the of the VFD and the excitation system to suit the startup requirements of a brushed or brushless synchronous motor.
  • Page 190 PERATING AND ISPLAY display control Status and measured value as well as start/stop for the excitation process. XCITATION MONITOR NDICATION ELEMENTS LED indications LED name Colour code Description Signal from external excitation field to PLC: grey Excitation system ready DI (-XS2:1,7) is inactive.
  • Page 191 PERATING AND ISPLAY Parameter description Parameter: Excitation control excitation system function This parameter enables/disables the Excitation system is disabled. Disable Excitation system is enabled. Enable Parameter: Excitation start mode start-up variant This parameter defines the for the synchronous motor: starting brushed brushless requirements for a...
  • Page 192 PERATING AND ISPLAY Setting value Parameter name Unit Setting range (Default setting) PID-controller (Excitation): 0.10 0.00 min I-time PID-controller (Excitation): 0.10 0.00 min D-time Excitation system: Rated values Motor: Rated excitation current 0.0 A Excitation system: Rated current 0.0 A ASYNC Start: Excitation 0.00 0.00 Hz...
  • Page 193 PERATING AND ISPLAY Fig. 4-96 Analog output AO 1 or AO 2 Transfer characteristics: Excitation current setpoint Parameter: AO 1(2) (Setpoint excit. current): Meas.range end maximum output signal current This parameter defines the (measured range end) of Setting range: Analog output AO 1 or Analog output AO 2 maximum excitation , that can flow for the .00 mA...
  • Page 194 PERATING AND ISPLAY Fig. 4-97 Analog input AI 3 Transfer characteristics: Excitation current feedback Parameter: AI 3 (Feedback excit. current): Meas.range end This parameter defines the maximum input signal current as (measured range end) of Setting range: Analog input AI 3 maximum excitation current feedback that can flow for the set with...
  • Page 195 PERATING AND ISPLAY XCITATION SYSTEM ATED VALUES Parameter: Motor: Rated excitation current rated excitation current This parameter defines the of the synchronous motor to be driven. Setting range: 0.0 A Parameter: Excitation system: Rated current excitation system rated current This parameter defines the Setting range: 0.0 A Parameter:...
  • Page 196 PERATING AND ISPLAY PERATING OURS motor running times The operating hours menu provides information about the when the motor is operated via the VFD. NOTE synchronous transfer When using the VFD<->Grid function, the following applies: VFD to Grid ➢ The counters for the motor running times stop as soon as the synchronisation of the VFD with the grid is successfully completed.
  • Page 197 Software version of the PLC as part of I/O interface unit INTERFACE UNIT VERSION (HMI) Software version of the touchscreen (HMI) PERATING UNIT VERSION NOTE When updating the software, ensure that the software versions are compatible. For queries, contact AuCom. 197/254 MVH2.0_BA_1.0.0_en MVH 2.0 ANUAL...
  • Page 198 • Login area: • password and user level settings Fig. 4-99 Menu: User center Menu: System settings ❶ Equipment settings Menu: (AuCom only) ❷ Menu: Change password ❸ Display: Status of current user level ❹ User Login Menu: ❺ Logout Button: ❻...
  • Page 199 PERATING AND ISPLAY Configuration area: System settings Fig. 4-100 Menu: System settings Settings: System date and time ❶ Standby page settings (activation and time delay) ❷ Select menu language of HMI menu ❸ VFD Monitor: VFD Monitor Selection of measured variables for display on the ❹...
  • Page 200 PERATING AND ISPLAY Standby page This parameter group determines whether the is used and when it is TANDBY PAGE displayed (time delay after the last touch on the touchscreen). SETTINGS CHAPTER REFERENCE In chapter 4.5.6 Changing Parameter Settings (General) you will ➢...
  • Page 201 PERATING AND ISPLAY Fig. 4-104 VFD Monitor Example: all readings displayed Login area Operator Engineer This screen is used to define new passwords for the user levels HANGE PASSWORD To change the password for a specific user level, you must first activate this user level. Operator INSTRUCTION Set a new password for the...
  • Page 202 PERATING AND ISPLAY ➢ After entering the last password digit, the screen is displayed with the request to enter the new password. Fig. 4-107 Enter new password Operator STEP 3: Enter the password for the user level via the displayed numeric EW PASSWORD ENTRY keypad.

  • Page 203: Vfd Operation

    VFD O PERATION VFD O PERATION PERATING UNCTIONS The VFD includes a comprehensive range of operating functions to meet the needs of many different applications. 5.1.1 U/f-C XTENDED ONTROL Fig. 5-1 Block diagram of the extended U/f control VFD type = ASYNC Motor U/f 5.1.2 SYNCHRONOUS OTOR...
  • Page 204 VFD O PERATION Park s transformation (dq transformation) of measured values into vectors ❶ to depict the motor model PI magnetic flux controller ❷ PI reactive motor current controller (magnetising current) ❸ PI speed controller ❹ PI active motor current controller (torque) ❺...

  • Page 205: Synchronous Motor Open Loop Vector Control

    VFD O PERATION 5.1.3 YNCHRONOUS OTOR ECTOR ONTROL Fig. 5-3 Block diagram of open loop vector control VFD type = SYC VC without sensor 5.1.4 YNCHRONOUS RANSFER Synchronous transfer allows the VFD to soft start and control multiple motors, one at a two operations time, in sequence.

  • Page 206: Master/Slave Control Functions

    VFD O PERATION frequency phase angle, magnitude The VFD initially runs at no load until of the VFD output voltage are synchronised with those of the MV mains voltage. frequency phase angle, magnitude If the of the VFD output match the MV grid, digital Synchronisation successful output (DO) is activated.
  • Page 207 VFD O PERATION Fig. 5-4 VFD type = ASYNC Motor U/f: Current balancing control in slave Distributed control system (DCS) ❶ Motor set current (Master) Motor frequency Set frequency (Slave) Motor current (Slave) Current balancing controller Fig. 5-5 VFD type = ASYNC VC without sensor: active current control Distributed control system (DCS) ❶...

  • Page 208: Speed Start / Vfd Start At Rotating Motor

    VFD O PERATION 5.1.6 / VFD S PEED TART TART AT OTATING OTOR The VFD can start a motor that is already rotating. START mode = Speed start With the parameter setting , the VFD determines the speed of the still rotating motor before the VFD output is switched to the motor. The VFD then frequency phase angle magnitude...
  • Page 209 VFD O PERATION The following table provides information on the different variants ❶ ❾ used to control motor reverse operation via the VFD: ❶ ❷ ❸ ❹ ❺ ❻ ❼ ❽ ❾ START/STOP control via: Parameter settings HMI HMI DCS DCS Release Release: VFD reverse = Enable Operating mode = Local control (HMI)
  • Page 210 VFD O PERATION Parameter settings: START/STOP ❶ CONTROL Release: VFD reverse = Enable • AND SETPOINT SETTING VIA (HMI) TOUCHSCREEN Operating mode = Local control (HMI) • Setpoint mode = Setpoint via HMI • Set frequency example: Set frequency (HMI) = 20 Hz •...
  • Page 211 VFD O PERATION Parameter settings: START/STOP ❸ CONTROL Release: VFD reverse = Enable • AND SETPOINT SETTING VIA Operating mode = Remote control (DCS) • Setpoint mode = Setpoint via DCS • Set frequency example: communication protocol (DCS) = 20 Hz •...
  • Page 212 VFD O PERATION Parameter settings: START/STOP ❺ CONTROL Release: VFD reverse = Enable • AND SETPOINT SETTING VIA (DI: L DIGITAL INPUTS EVEL Operating mode = Remote control (DI) • SIGNAL Remote START/STOP: DI mode = Level signal • Setpoint mode = Setpoint via DI •...
  • Page 213 VFD O PERATION Parameter settings: START/STOP ❼ CONTROL Release: VFD reverse = Enable • AND SETPOINT SETTING VIA (DI: P DIGITAL INPUTS ULSE Operating mode = Remote control (DI) • SIGNAL Remote START/STOP: DI mode = Pulse signal • Setpoint mode = Setpoint via DI •...
  • Page 214 VFD O PERATION Fig. 5-9 Motor reverse operation: variants ❼ ❽ ❾ MVH 2.0 MVH2.0_BA_1.0.0_en 214/254 ANUAL...

  • Page 215: Mv Mains Failure (Mv Loss)

    VFD O PERATION 5.1.8 MV M (MV L AINS AILURE The VFD can be configured so that in the event of a mains voltage failure it either: switches off without time delay (instantaneously), or • automatic restart performs an after mains return (MV restoration), or •...

  • Page 216: Motor Overload Protection (Thermal Replica)

    VFD O PERATION T1: MV loss duration maximum permissible mains failure duration T2: Time slot for a in which the VFD may perform an Max. perm. mains automatic restart, provided that STOP command is active (see parameter failure duration 5.1.9 OTOR VERLOAD ROTECTION...

  • Page 217: Automatic Ramp Intervention

    VFD O PERATION NOTICE exceeds If the VFD output current 150 % of the VFD rated output current, maximum permissible overload the VFD will switch off before the of the motor is reached. 5.1.10 UTOMATIC NTERVENTION URRENT RITERION VERCURRENT exceeds If, during the acceleration or deceleration process, the VFD output current Motor overload limit •...
  • Page 218 VFD O PERATION NOTE maximum permissible current limit and the current reset limit fixed in the VFD. You cannot change these settings. OLTAGE RITERION VERVOLTAGE decelerating When the VFD is , excessive load inertia or short deceleration time will cause DC bus voltage power cell overvoltage to rise and the VFD will trip on...

  • Page 219: Bypassed Operation (Vfd Bypass)

    VFD O PERATION Motor overexcitation gain For setting options, see parameters ➢ Motor overexcitation as of frequency. 5.1.11 (VFD B YPASSED PERATION YPASS The VFD can be completely bypassed if required, to allow critical applications to continue operating even if the VFD is damaged. After switching off the defective VFD, the motor coasts to stop.
  • Page 220 VFD O PERATION EUTRAL OINT HIFT ONSEQUENCES OF A NOTE POWER CELL FAILURE Only the defective power cell is bridged. ➢ Bridging of a single power cell leads to voltage unbalance at the ➢ VFD output. To compensate for such effects on the output voltage, the MVH 2.0 ➢...
  • Page 221 VFD O PERATION Fig. 5-14 Phase angle of a 5-stage VFD - faulty and bridged power cell in phase A To compensate for the voltage unbalance caused by the lower magnitude of phase voltage ALANCING shift the star point A, the MVH 2.0 uses an algorithm to accordingly.
  • Page 222 VFD O PERATION NOTE There is no power reduction at speeds up to 92.9 % of the rated ➢ motor speed. At speeds > 92.9 % of the rated motor speed, the maximum motor ➢ torque is reduced as a quadratic function of the motor voltage. If the motor is designed to insulation class B/F, a continued ➢...

  • Page 223: Maintenance

    AINTENANCE AINTENANCE WARNING Danger due to electric shock! Dangerous residual voltage is still present at input terminals R, S, T on the power cell even after the VFD has been switched off! Do not perform troubleshooting and maintenance on the VFD with ➢...

  • Page 224: Regular Maintenance

    AINTENANCE Test object Test criterion Tool Assessment criterion • Within normal working Input voltage • Voltmeter range (see nameplate) • Within normal working range or allowed short-term Output current • Ammeter overload range • In the rated range for Output voltage •...

  • Page 225: Maintenance Of Spare Power Cells

    AINTENANCE Test object Test criterion Tool Assessment criteria • Visual inspection • No foreign matter in • Foreign matter any cabinet or duct Motor • Insulation test • Insulation tester • No abnormal readings Tab. 6-2 Regular maintenance schedule switch-on test If the VFD is taken out of operation for a long period of time, perform a SWITCH ON TEST AND...

  • Page 226: Troubleshooting

    Before seeking service support, you can first perform a self-inspection of the VFD system LARM AULT INVESTIGATION according to the alarm or fault message and the proposed solutions in the following sections. For service support, contact AuCom or your local supplier. 7.1.1 LARM ESSAGES alarm...
  • Page 227 ROUBLESHOOTING Alarm messages Alarm: No feedback signal at Analog input AI 2 Alarm: No setpoint signal at Analog input AI 1 Alarm: Door lock Alarm: Clean air filter Alarm: Communication error control unit Alarm: Excitation current difference > 10% Alarm: Fan failure Alarm: Fan failure loop Alarm: Fan power supply Alarm: Motor overload...
  • Page 228 I/O interface unit failure • Check the polarity of the connected power supply and correct as necessary. • I/O interface unit is defective ⇒ Contact AuCom. Main processor board AP4 • Measure the voltage at the Alarm: Communication failure power supply unit of the error control unit assembly ⇒...
  • Page 229 ROUBLESHOOTING Alarm message Possible cause Remedy Motor circuit breaker for the • Check the motor for fan has tripped possible short circuits in the windings or earth faults and replace the fan if necessary • Check the fan filter for dirt and replace if necessary.
  • Page 230 • Check the wiring of the door contact switch for faults and correct as necessary. Defective digital input (DI) of • Contact AuCom. the I/O interface board Missing / insufficient power • Check for 24 V DC supply to supply 24VDC for the...
  • Page 231 ROUBLESHOOTING Alarm message Possible cause Remedy • Check the correct operation of the fan contactor and the thermal relays and replace if necessary. VFD has been operated in an • Reduce the load on the VFD overloaded state for a long output and observe the time temperature displayed on...

  • Page 232: Fault Messages

    ROUBLESHOOTING 7.1.2 AULT ESSAGES fault message fault condition When a fault occurs, the VFD system issues a indicating the and commands the medium voltage breaker or contactor to open. At the same time, the fault state VFD records the failure. The drive will remain in until reset.
  • Page 233 ROUBLESHOOTING VFD T NALYSIS fault message When a VFD trip occurs, the HMI displays the corresponding . This information allows the operator to take appropriate action to clear the fault. The flowchart below provides a procedure to analyse the cause of a VFD trip. Fig.
  • Page 234 ROUBLESHOOTING Before switching on the VFD, perform the following checks. Item To check Switch cabinet • Check that the primary power wiring L1, L2, L3 in the switch cabinet is properly terminated. (Synchronous transfer) • Is the circuit-breaker switched on? Primary cable inlet •...
  • Page 235 Ambient temperature is too high • Reduce the ambient temperature by increasing the site air-conditioning/cooling. Faulty analogue input (AI 3) on • Contact AuCom. the I/O interface board Bypass contactor is damaged • Contact AuCom. Fault: Power cell • Contact AuCom.
  • Page 236 EMERGENCY STOP signal chain. ⇒ Reset safety relay. Faulty control board of a power • Contact AuCom. cell Fibre optic (FO) cables for • Check the fibre optic (FO) sending (TX) and receiving (RX) connections and correct as are swapped necessary.
  • Page 237 ROUBLESHOOTING Fault message Possible cause Remedy Fuse is open or blown • Contact AuCom. VFD cabinet is not properly • Check the earthing connection grounded of the VFD cabinet. • Measure the earthing resistance of the VFD cabinet (⇒ it must be less than or equal to 0.1...
  • Page 238 • Find the cause of the imbalance and correct as necessary. Fault: VFD input phase unbalance The software versions of the • Contact AuCom. VFD main processor and I/O interface unit are not compatible The signal board I/O sampling • Contact AuCom.
  • Page 239 Fault: VFD control unit cleared. version error Software programme versions • Contact AuCom. are not compatible Protective function setting range: 110 150 % of VFD rated output current Motor Incorrect settings of the motor • Check settings of...
  • Page 240 • Check wiring of the hall sensor measurement and correct as necessary. • Ensure the hall sensors are intact. Motor consumes high reactive • Contact AuCom. power. There is an unbalanced or • Check load and correct as overhauling load necessary.
  • Page 241 There is an excessive inrush • Contact AuCom. current to the transformer Pickup limit value = 150 % of the VFD output rated current Transient load (load peak) •...
  • Page 242 • Measure the voltage at each Hall sensor and check that the voltage is within the permissible range in each case. • Contact AuCom. Deceleration time is too short • Increase the value of Deceleration ramp parameter Acceleration time is too short •...

  • Page 243: Replacement

    ROUBLESHOOTING EPLACEMENT 7.2.1 OWER EPLACEMENT All the power cells in the cell cabinet have the same electrical and mechanical properties. If a failure caused by a malfunction of power cell is identified, the faulted power cell can be replaced with a new cell with the same specification. WARNING Danger due to electric shock! Dangerous residual voltage is still present at input terminals R, S, T on...
  • Page 244 ROUBLESHOOTING STEP 5: Move the disconnect/earthing switch to the disconnect/earthing position and secure it against being switched on again. STEP 6: Wait at least 10 minutes after MV power is removed. All cell indicator lights must be off. STEP 7: Unlock and open the cabinet door.

  • Page 245: Transport, Storage, And Installation

    RANSPORT TORAGE NSTALLATION RANSPORT TORAGE NSTALLATION ECEIVING NSPECTION Upon receiving the MVH 2.0 product: Confirm the exterior packaging of the VFD is in good condition. • Unpack and confirm the cabinet surface of the VFD is in good condition and verify •...
  • Page 246 RANSPORT TORAGE NSTALLATION SING AN OVERHEAD CRANE OR A HAND CHAIN HOIST CAUTION Confirm that the cables are of sufficient length and strength to ➢ support the load. Do not lift with cables directly on the lifting eyes. Use of a ➢...
  • Page 247 RANSPORT TORAGE NSTALLATION Fig. 8-1 Schematic diagram of cabinet hoists: a) Transformer cabinet top hoist b) Cell cabinet top hoist c) Cell cabinet bottom hoist Lifting hoist ❶ OOLING THE CABINET Fig. 8-2 Cooling air flow paths in the various cabinet types Example: 6 kV VFD: a) Control/feeder cabinet and cell cabinet b) Transformer cabinet Centrifugal fan...
  • Page 248 RANSPORT TORAGE NSTALLATION Fig. 8-3 Cooling air flow paths in the various cabinet types Example: 11 kV VFD: a) Control/feeder cabinet and cell cabinet b) Transformer cabinet Centrifugal fan ❶ Air outlet ❷ Filter (front) ❸ Air inlet (front) ❹ Power cells ❺...

  • Page 249: Installation

    RANSPORT TORAGE NSTALLATION Fig. 8-4 Air-water cooling schemes: a) Air/water cooling b) Air cooling Top fan ❶ Air duct ❷ a) Air duct soft connection ❸ b) Air inlet (area total area of all fan outlets) > Heat exchanger ❹ Booster fan ❺...
  • Page 250 RANSPORT TORAGE NSTALLATION Fig. 8-5 Cable channel/duct Top fan ❶ VFD cabinet ❷ Cable channel ❸ DDITIONAL OPTIONAL Depending on the application, accessory cabinets maybe be provided: CABINETS bypass cabinet is used to switch the motor connection from VFD output to line •...

  • Page 251: Disposal

    ISPOSAL ISPOSAL If the MVH 2.0 frequency inverter is decommissioned permanently, observe the following preparatory measures for the proper and environmentally friendly disposal of the product. Safety Always follow the safety instructions in chapter when carrying out any work. AFETY INSTRUCTIONS LECTRICAL AND ELECTRONIC DISPOSAL NOTE COMPONENTS...

  • Page 252: Spare Parts

    The use of spare parts and accessories not specified by AuCom may result in material damage to the product. ➢ You mut only use spare parts and accessories specified and approved by AuCom. A range of spare parts and accessories are available for the MVH 2.0 Series frequency RDERING INFORMATION inverters, such as: Power cells •...

  • Page 253: Index

    NDEX NDEX Acceleration ramp ........137, 142, 229 Main switch element ............95 Active current........ 154, 156, 158, 204, 207 Master/Slave operation ..........136 Alarm ............32, 55, 94, 226 Motor deceleration ............149 Analog input ......77, 82, 161, 193, 194, 209 Motor rated values ............
  • Page 254 New Zealand 123 Wrights Road, PO Box 80208, Christchurch 8440. New Zealand T +64 3 338 8280 F +64 3 338 8104 China 203-1 JH Plaza, 2008 Huqingping Road, Shanghai 201702, China T +86 21 5877 5178 F +86 21 5877 6378 Germany Borsigstraße 6, 48324 Sendenhorst, Germany T +49 2526 93880 0 F +49 2526 93880 100...

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