Danfoss VLT FC51 Design Manual
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Danfoss VLT FC51 Design Manual

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MAKING MODERN LIVING POSSIBLE
Design Guide
®
VLT
Micro Drive FC 51

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Summary of Contents for Danfoss VLT FC51

  • Page 1 MAKING MODERN LIVING POSSIBLE Design Guide ® Micro Drive FC 51...

  • Page 3: Table Of Contents

    ® Contents Micro Drive FC 51 Design Guide Contents 1 Introduction 1.1 Available Literature 1.2 Document and Software Version 1.3 Abbreviations 1.4 Definitions 1.5 Power Factor 2 Safety and Conformity 2.1 Safety 2.2 Disposal Instruction 2.3 Approvals 2.4 CE Labeling 2.5 Aggressive Environments 2.6 Vibration and Shock 2.7 Advantages...
  • Page 4 ® Contents Micro Drive FC 51 Design Guide 4.1.10 FC 51 IP21 Kit Mounting Instruction 4.1.11 FC 51 De-coupling Plate Mounting Instruction for M1 and M2 4.1.12 FC 51 De-coupling Plate Mounting Instruction for M3 4.1.13 FC 51 De-coupling Plate Mounting Instruction for M4 and M5 4.1.14 FC 51 DIN Rail Kit Mounting Instruction 4.1.15 Line Filter MCC 107 Installation Instructions 4.1.16 Mounting...
  • Page 5 ® Contents Micro Drive FC 51 Design Guide 6.15 Switches 6.16 Final Set-Up and Test 6.17 Parallel Connection of Motors 6.18 Motor Installation 6.19 Installation of Misc. Connections 6.20 Safety 6.20.1 High Voltage Test 6.20.2 Safety Earth Connection 7 Programming 7.1 How to Programme 7.1.1 Programming with MCT 10 Set-up Software 7.1.2 Programming with the LCP 11 or LCP 12...
  • Page 6 ® Contents Micro Drive FC 51 Design Guide 8.4.12 Conversion 8.5 Examples 8.6 Modbus RTU Overview 8.6.1 Assumptions 8.6.2 What the User Should Already Know 8.6.3 Modbus RTU Overview 8.6.4 Frequency Converter with Modbus RTU 8.7 Network Configuration 8.8 Modbus RTU Message Framing Structure 8.8.1 Frequency Converter with Modbus RTU 8.8.2 Modbus RTU Message Structure 8.8.3 Start/Stop Field...

  • Page 7: Introduction

    Automatic Motor Tuning converter. American wire gauge Direct current Danfoss technical literature is available in print from local Electro Magnetic Compatibility Danfoss Sales Offices or online at: www.danfoss.com/ Electronic Thermal Relay BusinessAreas/DrivesSolutions/Documentations Frequency Converter •...

  • Page 8: Definitions

    Introduction ® Micro Drive FC 51 Design Guide 1.4 Definitions Break-away torque Torque 1.4.1 Frequency Converter Pull-out VLT,MAX The maximum output current. VLT,N The rated output current supplied by the frequency converter. VLT, MAX The maximum output voltage. 1.4.2 Input Control command Illustration 1.1 Break-away Torque The connected motor can be started and stopped with LCP...
  • Page 9 Introduction ® Micro Drive FC 51 Design Guide 1.4.5 Miscellaneous Short for Mille Circular Mil, an American measuring unit for cable cross-section. 1 MCM ≡ 0.5067 mm Analog Inputs The analog inputs are used for controlling various functions of the frequency converter. Most significant bit.

  • Page 10: Power Factor

    Introduction ® Micro Drive FC 51 Design Guide Trip Locked A state entered in fault situations when the frequency converter is protecting itself and requiring physical intervention, for example, if the frequency converter is subject to a short circuit on the output. A locked trip can only be canceled by cutting off mains, removing the cause of the fault, and reconnecting the frequency converter.

  • Page 11: Safety And Conformity

    Safety and Conformity ® Micro Drive FC 51 Design Guide 2 Safety and Conformity WARNING 2.1 Safety DISCHARGE TIME The following symbols are used in this document: The frequency converter contains DC-link capacitors, which can remain charged even when the frequency WARNING converter is not powered.

  • Page 12: Disposal Instruction

    Safety and Conformity ® Micro Drive FC 51 Design Guide CAUTION information on safety aspects relating to the frequency converter. Danfoss do this by means of a manufacturer's WINDMILLING declaration. Unintended rotation of permanent magnet motors The low-voltage directive (73/23/EEC) causes risk of personal injury and equipment damage.

  • Page 13: Aggressive Environments

    The manufacturer can ensure CE As an aid to the installer, Danfoss has prepared EMC instal- labeling under the EMC directive either by using lation guidelines for the Power Drive system. The standards...

  • Page 14: Vibration And Shock

    Safety and Conformity ® Micro Drive FC 51 Design Guide 2.7.2 The Clear Advantage - Energy Savings An extra protection in such areas is a coating of the printed circuit boards, which can be ordered as an option. The clear advantage of using a frequency converter for NOTICE controlling the speed of fans or pumps lies in the electricity savings.
  • Page 15 2.7.4 Comparison of Energy Savings Volume % Illustration 2.5 Energy Savings The Danfoss frequency converter solution offers major savings compared with traditional energy saving solutions. This is because the frequency converter is able to control Discharge dampers reduce power consumption. Inlet Guide fan speed according to thermal load on the system and Vans offer a 40% reduction, but are expensive to install.
  • Page 16 Safety and Conformity ® Micro Drive FC 51 Design Guide 2.7.5 Example with Varying Flow over 1 (mwg) Year This example is calculated based on pump characteristics obtained from a pump datasheet. The result obtained shows energy savings in excess of 50% at the given flow distribution over a year.
  • Page 17 Safety and Conformity ® Micro Drive FC 51 Design Guide 2.7.6 Better Control 2.7.8 Using a Frequency Converter Saves Money If a frequency converter is used for controlling the flow or pressure of a system, improved control is obtained. Example chapter 2.7.9 Without a Frequency Converter shows A frequency converter can vary the speed of the fan or that a lot of equipment is not required when a frequency pump, obtaining variable control of flow and pressure.
  • Page 18 Safety and Conformity ® Micro Drive FC 51 Design Guide 2.7.9 Without a Frequency Converter Cooling section Heating section Inlet guide vane Fan section Supply V.A.V Sensors outlets Return Return Flow Flow Control Control 3-Port 3-Port valve valve Valve Mechanical Valve posi- linkage...
  • Page 19 Safety and Conformity ® Micro Drive FC 51 Design Guide 2.7.10 With a Frequency Converter Cooling section Heating section Fan section Supply V.A.V Sensors outlets Return Flow Return Flow Pump Pump Duct Local Main D.D.C. B.M.S Pressure control control 0-10V 0/4-20mA Control Control...

  • Page 20: Product Overview

    Product Overview ® Micro Drive FC 51 Design Guide 3 Product Overview 3.1 Control Structures Select open loop or closed loop in 1-00 Configuration Mode. 3.1.1 Control Structure Open Loop 100% Reference handling P 4-14 Remote Motor speed P 3-4* Ramp 1 reference high limit [Hz] P 3-5* Ramp 2...

  • Page 21: Control Structure Closed Loop

    Product Overview ® Micro Drive FC 51 Design Guide 3.1.3 Control Structure Closed Loop The internal controller allows the frequency converter to become an integral part of the controlled system. The frequency converter receives a feedback signal from a sensor in the system. It then compares this feedback to a set-point reference value and determines the error, if any, between these 2 signals.

  • Page 22: Reference Handling

    Product Overview ® Micro Drive FC 51 Design Guide 3.1.4 Reference Handling Details for open loop and closed loop operation. Intern resource Relative scalling reference Preset relative reference ±100% Input command: Preset reference 0 ±100% preset ref bit0, bit1, bit2 Preset reference 1 ±100% Speed open Preset reference 2 ±100%...

  • Page 23: General Aspects Of Emc

    Product Overview ® Micro Drive FC 51 Design Guide The scaled reference is calculated as follows: Reference = X + X × Where X is the external reference, the preset reference or the sum of these and Y is 3-14 Preset Relative Reference in [%]. If Y, 3-14 Preset Relative Reference, is set to 0%, the reference is not affected by the scaling.

  • Page 24: Emission Requirements

    Product Overview ® Micro Drive FC 51 Design Guide To reduce the interference level from the entire system (unit+installation), make motor and brake cables as short as possible. Avoid placing cables with a sensitive signal level alongside motor and brake cables. Radio interference higher than 50 MHz (airborne) is especially generated by the control electronics.

  • Page 25: Galvanic Isolation (Pelv)

    The components that make up the electrical isolation, as environment. All Danfoss frequency converters comply described, also comply with the requirements for higher with the requirements for the industrial environment and...

  • Page 26: Earth Leakage Current

    The frequency Installation at high altitude: converter is not damaged in any way by switching on the At altitudes above 2,000 m, contact Danfoss regarding output. However, fault messages may appear. PELV. MG02K302 - Rev. 2013-12-03...

  • Page 27: Motor Thermal Protection

    Product Overview ® Micro Drive FC 51 Design Guide Motor-generated over-voltage t [s] The voltage in the intermediate circuit is increased when 2000 the motor acts as a generator. This occurs in following cases: 1000 • The load drives the motor (at constant output frequency from the frequency converter), that is the load generates energy.

  • Page 28: Selection

    This software can either be ordered using code number active key. 130B1000 or downloaded from the DanfossWeb site: [Hand On]: Starts the motor and enables control of the www.danfoss.com/BusinessAreas/DrivesSolutions/software- frequency converter via the LCP. download [Off/Reset]: Stops the motor (off). If in alarm mode the alarm is reset.

  • Page 29: Fc 51 Lcp Mounting Instruction

    Selection ® Micro Drive FC 51 Design Guide 4.1.3 FC 51 LCP Mounting Instruction 4.1.4 FC 51 Remote Mounting Kit Mounting Instruction Step 1 Place the bottom of the LCP in the frequency converter. Step 1 Fit gasket on LCP in the frequency converter. Illustration 4.4 Fit Gasket on LCP Step 2 Place LCP on panel - see dimensions of hole on drawing.
  • Page 30 Selection ® Micro Drive FC 51 Design Guide Step 3 Step 4 Place the bracket on the back of the LCP, then slide down. Connect the cable to the frequency converter. Tighten screws and connect the cable to the LCP. NOTICE NOTICE Use the provided thread cutting screws to fasten...

  • Page 31: Ip21/Type 1 Enclosure Kit

    Selection ® Micro Drive FC 51 Design Guide 4.1.5 IP21/TYPE 1 Enclosure Kit Frame IP class Power [kW] Height [mm] Width [mm] Depth [mm] Ordering no. 1x200-240 V 3x200-240 V 3x380-480 V IP21 0.18-0.75 0.25-0.75 0.37-0.75 219.3 155.9 132B0108 IP21 1.5-2.2 245.6 175.4...

  • Page 32: Fc 51 Type 1 Kit Mounting Instruction For M1, M2 And M3

    Selection ® Micro Drive FC 51 Design Guide 4.1.8 FC 51 Type 1 Kit Mounting Instruction 4.1.9 FC 51 Type 1 Kit Mounting Instruction for M1, M2 and M3 for M4 and M5 Step 1 Step 1 Mount metal plate on frequency converter and tighten the Mount metal plate on frequency converter and tighten the screws.

  • Page 33: Fc 51 Ip21 Kit Mounting Instruction

    Selection ® Micro Drive FC 51 Design Guide 4.1.10 FC 51 IP21 Kit Mounting Instruction Step 3 Mount metal plate on frequency converter and tighten screws. Tightening torque: 2 Nm. Step 1 Fit top cover on frequency converter. Illustration 4.14 Fit Top Cover on Frequency Converter Step 2 Remove knock-outs on metal plate and fit rubber Illustration 4.16 Mount Metal Plate on Frequency Converter...

  • Page 34: Fc 51 De-Coupling Plate Mounting Instruction For M1 And M2

    Selection ® Micro Drive FC 51 Design Guide 4.1.11 FC 51 De-coupling Plate Mounting Step 3 Instruction for M1 and M2 De-coupling plate mounted. Step 1 Mount metal plate on frequency converter and fasten with two screws. Tightening torque: 2 Nm. Illustration 4.20 De-coupling Plate Mounted 4.1.12 FC 51 De-coupling Plate Mounting Illustration 4.18 Mount Metal Plate...

  • Page 35: Fc 51 De-Coupling Plate Mounting Instruction For M4 And M5

    Selection ® Micro Drive FC 51 Design Guide Step 2 Step 2 De-coupling plate mounted. De-coupling plate mounted. Illustration 4.23 De-coupling Plate Mounted 4.1.13 FC 51 De-coupling Plate Mounting Instruction for M4 and M5 Illustration 4.25 De-coupling Plate Mounted Step 1 Step 3 Mount metal plate on frequency converter and fasten with Mount bracket on de-coupling plate.

  • Page 36: Fc 51 Din Rail Kit Mounting Instruction

    Selection ® Micro Drive FC 51 Design Guide 4.1.14 FC 51 DIN Rail Kit Mounting 4.1.15 Line Filter MCC 107 Installation Instruction Instructions Step 1 Line filters of the type MCC 107 combine a harmonic filter Mount plastic part on frequency converter. and an EMC filter.

  • Page 37: Mounting

    Selection ® Micro Drive FC 51 Design Guide 4.1.16 Mounting 4.1.17 Wiring WARNING There are 2 options for mounting the line filter correctly: Risk of electrical shock due to high leakage currents 1. Front mounting • Do not power up the line filter before it is connected to protective earth (PE) •...

  • Page 38: Dimensions

    Selection ® Micro Drive FC 51 Design Guide NOTICE For voltage rating, wire size and fuse selection, see the ® Micro Drive Quick Guide. • Reduce common mode interferences by establishing a low impedance current path to the frequency converter. •...

  • Page 39: Special Conditions

    Selection ® Micro Drive FC 51 Design Guide 4.2 Special Conditions M2 200 V Iout [%] 4.2.1 Purpose of Derating 110 % 100 % Take the purpose of derating into account when using the 90 % frequency converter at low air pressure (heights), at low 80 % 70 % speeds, with long motor cables, cables with a large cross...

  • Page 40: Derating For Low Air Pressure

    The cooling capability of air is decreased at low air 110 % pressure. 100 % 90 % 80 % For altitudes above 2,000 m, contact Danfoss regarding 70 % PELV. 60 % 50 % 40 % Below 1,000 m altitude no de-rating is necessary, but 30 % 40 ℃...

  • Page 41: How To Order

    8-digit sales number (either for one product or a project list with several products) to be delivered to your local sales office. The Drive Configurator can be found on: www.danfoss.com/ drives. 5.2 FC Identification The nameplate sticker is located on the top of each...

  • Page 42: Type Code

    How to Order ® Micro Drive FC 51 Design Guide 5.3 Type Code Table 5.1 Type Code Description Possible choice Product group Adjustable Frequency Converters Series and product type Micro Drive Power size 7-10 0.18-22 kW 11-12 S2: Single phase 200-240 V AC Mains voltage T 2: Three phase 200-240 V AC T 4: Three phase 380-480 V AC...

  • Page 43: Ordering Numbers

    How to Order ® Micro Drive FC 51 Design Guide 5.4 Ordering Numbers 200-240 V 380-480 V Power [kW] Current [l 1 ph. 3 ph. Current [l 3 ph. 0.18 132F 0001 0.25 132F 0008 0.37 132F 0002 132F 0009 132F 0017 0.75 132F 0003...
  • Page 44 Line Filter MCC 107 for 132F0026 130B2528 Line Filter MCC 107 for 132F0028 130B2527 Line Filter MCC 107 for 132F0030 Table 5.4 Options for VLT Micro Drive NOTICE Danfoss line filters and brake resistors are available upon request. MG02K302 - Rev. 2013-12-03...

  • Page 45: How To Install

    How to Install ® Micro Drive FC 51 Design Guide 6 How to Install 6.1 Before Starting 6.2 Side-by-Side Installation 6.1.1 Checklist The frequency converter can be mounted side-by-side for IP 20 rating units and requires 100 mm clearance above and below for cooling.

  • Page 46: Mechanical Dimensions

    How to Install ® Micro Drive FC 51 Design Guide 6.4 Mechanical Dimensions A template for drilling can be found on the flap of the packaging. Ø 4.5mm Ø 7mm Ø 7mm Ø 5.5mm Ø 4.5mm Max. Power [kW] Height [mm] Width [mm] Depth [mm] Weight...

  • Page 47: Fuses

    Short circuit protection Non UL compliance Danfoss recommends using the fuses mentioned in the If UL/cUL is not to be complied with, Danfoss recommends following tables to protect service personnel or other using the fuses mentioned in Table 6.2, which ensures...

  • Page 48: Mains Connection

    How to Install ® Micro Drive FC 51 Design Guide 6.7 Mains Connection All types of 3-phased asynchronous standard motors can be connected to the frequency converter. Normally, small Step 1: Mount ground cable. motors are star-connected (230/400 V, Δ/Y). Large motors are delta-connected (400/690 V, Δ/Y).
  • Page 49 How to Install ® Micro Drive FC 51 Design Guide 6.8.2 Motor Cables Switching frequency When frequency converters are used together with Sine- wave filters to reduce the acoustic noise from a motor, the See chapter 9 Specifications for maximum dimensioning of switching frequency must be set according to the Sine- motor cable cross-section and length.
  • Page 50 How to Install ® Micro Drive FC 51 Design Guide Panel PLC etc. Output con- tactor etc. Earthing rail Cable insula- tion stripped Min. 16 mm Equalizing cable All cable entries in one side of panel Control cables Motor cable Min.

  • Page 51: Use Of Emc-Correct Cables

    Twisted copper wire or armoured steel wire cable. Single-layer braided copper wire with varying percentage screen coverage. This is the typical Danfoss reference cable. Double-layer braided copper wire. Twin layer of braided copper wire with a magnetic, screened/armoured intermediate layer.

  • Page 52: Earthing Of Screened/Armoured Control Cables

    How to Install ® Micro Drive FC 51 Design Guide 6.10 Earthing of Screened/Armoured Correct grounding Control cables and cables for serial communi- Control Cables cation are fitted with cable clamps at both ends to ensure the best possible electrical contact. Control cables should be braided, screened/armoured, and the screen must be connected with a cable clamp at both Incorrect grounding...

  • Page 53: Electrical Overview

    * Brake (BR+ and BR-) are not applicable for enclosure type M1. Brake resistors are available from Danfoss. Improved power factor and EMC performance can be achieved by installing optional Danfoss line filters. Danfoss power filters can also be used for load sharing.

  • Page 54: Electrical Installation And Control Cables

    How to Install ® Micro Drive FC 51 Design Guide 6.13 Electrical Installation and Control Cables Terminal number Terminal description Parameter number Factory default 1+2+3 Terminal 1+2+3 - Relay1 5-40 No operation Terminal 12, DC 24V Supply +24 V DC Terminal 18 Digital Input 5-10 Start...

  • Page 55: Connecting To Control Terminals

    How to Install ® Micro Drive FC 51 Design Guide 6.14.2 Connecting to Control Terminals S200 Switches 1-4 Illustration 6.14 shows all control terminals of the frequency converter. Applying Start (terminal 18) and an analog reference (terminals 53 or 60) make the frequency converter run.
  • Page 56 This number along with the description of the alarm assists in troubleshooting. Contact Danfoss Service and make sure to mention number and alarm description. Unsuccessful AMT is often caused by incorrectly registered BAUER D-7 3734 ESLINGEN motor name plate data or too big difference between the 3~ MOTOR NR.

  • Page 57: Parallel Connection Of Motors

    How to Install ® Micro Drive FC 51 Design Guide 6.17 Parallel Connection of Motors The frequency converter can control several parallel- connected motors. The total current consumption of the motors must not exceed the rated output current I the frequency converter. When motors are connected in parallel, 1-29 Automatic Motor Tuning (AMT) cannot be used.

  • Page 58: Motor Installation

    How to Install ® Micro Drive FC 51 Design Guide 6.19.2 How to Connect a PC to the 6.18 Motor Installation Frequency Converter 6.18.1 Motor Insulation To control or program the frequency converter from a PC, For motor cable lengths ≤ the maximum cable length install the PC-based Configuration Tool MCT 10 Set-up listed in chapter 9.1 Specifications, the following motor Software.

  • Page 59: Safety

    Ordering number: Order the CD containing the PC-based Configuration Tool MCT 10 Set-up Software using code number 130B1000. MCT 10 Set-up Software can also be downloaded from the Danfoss Internet: www.danfoss.com/BusinessAreas/DrivesSo- lutions/Softwaredownload/DDPC+Software+Program.htm. 6.20 Safety 6.20.1 High Voltage Test Carry out a high voltage test by short-circuiting terminals...

  • Page 60: Programming

    When active and edit set-up differ, both numbers are shown in the display (Set-up 12). The number flashing, This software can either be ordered using code number indicates the edit set-up. 130B1000 or downloaded from the Danfoss Web site: www.danfoss.com/BusinessAreas/DrivesSolutions/software- download ®...

  • Page 61: Status Menu

    Programming ® Micro Drive FC 51 Design Guide Pressing [OK] for more than 1 s enters Adjust mode. In Adjust mode, it is possible to make fast adjustment by ▲ ▼ pressing [ ] combined with [OK]. ▲ ▼ Press [ ] to change value.

  • Page 62: Quick Menu Parameters

    Programming ® Micro Drive FC 51 Design Guide NOTICE ▲ ▼ Press [ ] to browse through the parameters in the Quick Menu. Changing this parameter affects parameter 1-22 to 1-25, Press [OK] to select a parameter. 1-30, 1-33 and 1-35. ▲...
  • Page 63 Programming ® Micro Drive FC 51 Design Guide 3-03 Maximum Reference 1-00 Configuration Mode Range: Function: Option: Function: Maximum Reference is adjustable in the Process Enables process closed loop control. See range Minimum Reference -4999. Closed parameter group 7-3* Process PI Control for Loop further information on PI-controller.
  • Page 64 Programming ® Micro Drive FC 51 Design Guide 3-10 Preset Reference 6-25 Terminal 60 High Ref./Feedb. Value Option: Function: Range: Function: 3-02 Minimum Reference is set to -70 The scaling value corresponding to the and 3-03 Maximum Reference is set to high current set in 6-23 Terminal 60 High 50.

  • Page 65: Main Menu

    Once the set-up of a frequency converter is complete, i.e. the multiplication factor of the error Danfoss recommends to store the data in the LCP or on a between the setpoint and the feedback PC via MCT 10 Set-up Software tool.

  • Page 66: Initialise The Frequency Converter To Default Settings In Two Ways

    Programming ® Micro Drive FC 51 Design Guide 7.8 Initialise the Frequency Converter to Default Settings in two Ways Recommended initialisation (via 14-22 Operation Mode) Select 14-22 Operation Mode. Press [OK]. Select Initialisation and Press [OK]. Cut off the mains supply and wait until the display turns off.

  • Page 67: Rs-485 Installation And Set-Up

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide 8 RS-485 Installation and Set-up 8.1 RS-485 Installation and Set-up NOTICE 8.1.1 Overview Screened, twisted-pair cables are recommended to RS-485 is a 2-wire bus interface compatible with multi-drop reduce noise between conductors. network topology, that is, nodes can be connected as a bus, or via drop cables from a common trunk line.

  • Page 68: Emc Precautions

    8.2 FC Protocol Overview 90° crossing The FC protocol, also referred to as FC bus or Standard bus, is the Danfoss standard fieldbus. It defines an access technique according to the master-follower principle for Brake resistor communications via a serial bus.

  • Page 69: Network Configuration

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide 8.4 FC Protocol Message Framing Structure The physical layer is RS-485, thus utilising the RS-485 port built into the frequency converter. The FC protocol 8.4.1 Content of a Character (byte) supports different telegram formats: •...

  • Page 70: Frequency Converter Address (Adr)

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide 8.4.4 Frequency Converter Address (ADR) 8.4.5 Data Control Byte (BCC) Address format 1-126 The checksum is calculated as an XOR-function. Before the first byte in the telegram is received, the calculated Bit 7=1 (address format 1-126 active) checksum is 0.

  • Page 71: The Pke Field

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide 8.4.7 The PKE Field If the command cannot be performed, the follower sends this response: 0111 Command cannot be performed The PKE field contains 2 subfields: Parameter command - and issues the following fault report in the parameter and response (AK) and Parameter number (PNU): value: Error code...

  • Page 72: Data Types Supported By The Frequency Converter

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide write the new value in the PWE block and send from the Conversion index Conversion factor master to the follower. 3600 When a follower responds to a parameter request (read command), the present parameter value in the PWE block is transferred and returned to the master.

  • Page 73: Modbus Rtu Overview

    8.6.1 Assumptions parameter command for write in EEPROM is “E”. Parameter 4-14 is 19E in hexadecimal. Danfoss assumes that the installed controller supports the interfaces in this document, and strictly observes all The response from the follower to the master is: requirements and limitations stipulated in the controller and frequency converter.

  • Page 74: Frequency Converter With Modbus Rtu

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide 8.8 Modbus RTU Message Framing requested action, the follower constructs an error message, and send it in response, or a time-out occurs. Structure 8.8.1 Frequency Converter with Modbus 8.6.4 Frequency Converter with Modbus The controllers are set up to communicate on the Modbus The frequency converter communicates in Modbus RTU network using RTU (Remote Terminal Unit) mode, with...

  • Page 75: Start/Stop Field

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide 8.8.3 Start/Stop Field 8.8.6 Data Field Messages start with a silent period of at least 3.5 character The data field is constructed using sets of 2 hexadecimal intervals. This is implemented as a multiple of character digits, in the range of 00 to FF hexadecimal.
  • Page 76 RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide Coil Description Signal Direction Coil Number Control not ready Control ready 1-16 Frequency converter control word Master to Frequency converter not Frequency converter ready (see Table 8.15) follower ready 17-32 Frequency converter speed or set- Master to...

  • Page 77: How To Control The Frequency Converter

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide Content Access Description adress Register register 40001 Reserved Reserved for Legacy Drives VLT 5000 and VLT 2800 40002 Reserved Reserved for Legacy Drives VLT 5000 and VLT 2800 40003 Reserved Reserved for Legacy Drives VLT 5000 and VLT 2800 40004...

  • Page 78: Modbus Exception Codes

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide 8.8.11 Modbus Exception Codes Reading 3-14 Preset Relative Reference (32bit): The holding registers 3410 & 3411 holds the parameters value. A value of 11300 (Decimal), means that the parameter is set to For a full explanation of the structure of an exception code 1113.00.

  • Page 79: Examples

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide Non-standard data types Field Name Example (hex) Non-standard data types are text strings and are stored as Follower Address 01 (frequency converter address) 4x registers (40001–4FFFF). The parameters are read using Function 01 (read coils) function 03hex "Read Holding Registers"...

  • Page 80: Force/Write Multiple Coils (0F Hex)

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide 8.10.3 Force/Write Multiple Coils (0F hex) Field Name Example (hex) Follower Address Description Function 03 (read holding registers) This function forces each coil in a sequence of coils to Starting Address HI 0B (Register address 3029) either ON or OFF.

  • Page 81: Preset Multiple Registers (10 Hex)

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide Response Response The normal response is an echo of the query, returned The normal response returns the follower address, function after the register contents have been passed. code, starting address, and quantity of registers preset. Field Name Example (hex) Field Name...
  • Page 82 RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide Bit 03, Coasting Master-follower Bit 03=’0’: The frequency converter immediately "lets go" Speed ref. of the motor, (the output transistors are "shut off") and it coasts to a standstill. Bit 03=’1’: The frequency converter starts the motor if the no.: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0...

  • Page 83: Status Word According To Fc Profile (Stw) (8-30 Protocol = Fc Profile)

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide Bit 10=’0’: The control word is ignored. Bit=0 Bit=1 Bit 10=’1’: The control word is used. Control not ready Control ready This function is relevant because the telegram always Drive not ready Drive ready contains the control word, regardless of the telegram type.

  • Page 84: Bus Speed Reference Value

    RS-485 Installation and Set... ® Micro Drive FC 51 Design Guide 8.11.3 Bus Speed Reference Value Bit 08, Speed≠ reference/speed=reference Bit 08=’0’: The motor is running but the present speed is different from the preset speed reference. It might for Speed reference value is transmitted to the frequency example, be the case when the speed ramps up/down converter in a relative value in %.

  • Page 85: Specifications

    Specifications ® Micro Drive FC 51 Design Guide 9 Specifications 9.1.1 Mains Supply 1x200-240 V AC Normal overload 150% for 1 minute Frequency converter PK18 PK37 PK75 P1K5 P2K2 Typical Shaft Output [kW] 0.18 0.37 0.75 Typical Shaft Output [HP] 0.25 IP20 Output current...
  • Page 86 Specifications ® Micro Drive FC 51 Design Guide 9.1.3 Mains Supply 3x380-480 V AC Normal overload 150% for 1 min Frequency converter PK37 PK75 P1K5 P2K2 P3K0 P4K0 0.37 0.75 Typical Shaft Output [kW] Typical Shaft Output [HP] Frame Frame Frame Frame Frame...
  • Page 87 Specifications ® Micro Drive FC 51 Design Guide Normal overload 150% or 1 min Frequency converter P5K5 P7K5 P11K P15K P18K P22K Typical Shaft Output [kW] 18.5 Typical Shaft Output [HP] Frame Frame Frame Frame Frame Frame IP 20 Output current Continuous (3x380-440 V) [A] 12.0 15.5...
  • Page 88 Specifications ® Micro Drive FC 51 Design Guide Protection and features • Electronic thermal motor protection against overload. • Temperature monitoring of the heat sink ensures that the frequency converter trips in case of overtemperature • The frequency converter is protected against short-circuits between motor terminals U, V, W. •...
  • Page 89 Specifications ® Micro Drive FC 51 Design Guide Digital inputs (pulse/encoder inputs) Programmable digital inputs (pulse/encoder) 5 (1) Terminal number 18, 19, 27, 29, 33, Logic PNP or NPN Voltage level 0-24 V DC Voltage level, logic'0' PNP <5 V DC Voltage level, logic'1' PNP >10 V DC Voltage level, logic '0' NPN...
  • Page 90 Specifications ® Micro Drive FC 51 Design Guide Relay output Programmable relay output Relay 01 Terminal number 01-03 (break), 01-02 (make) Max. terminal load (AC-1) on 01-02 (NO) (Resistive load) 250 V AC, 2 A Max. terminal load (AC-15) on 01-02 (NO) (Inductive load @ cosφ 0.4) 250 V AC, 0.2 A Max.

  • Page 91: Index

    ® Index Micro Drive FC 51 Design Guide Index Display..................... 58 Disposal....................0 Drive Configurator................39 Abbreviations..................5 Active set-up..................58 Earth leakage current..............57, 24 Aggressive environments..............11 Earthing Air humidity................... 11 Earthing....................50 Aluminium conductors..............47 of screened/armoured control cables........50 Ambient temperature...............
  • Page 92 ® Index Micro Drive FC 51 Design Guide Initialise the frequency converter..........64 Intermediate circuit................25 Name plate data.................. 53 IP21/TYPE 1 enclosure kit..............29 Navigation keys................26, 59 Network configuration..................72 Jog......................6, 80 connection..................65 Laws of Proportionality..............13 Operation keys................
  • Page 93 ® Index Micro Drive FC 51 Design Guide Reference handling................20 References....................6 Value......................58 Relay output..................88 Variable control of flow and pressure........15 Residual Current Device............24, 50 Varying flow over 1 year..............14 RS-485 RS-485....................65 Vibration and shock................12 bus connection.................
  • Page 94 Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies.

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