Danfoss FC 202 Design guide

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Design Guide

VLT® Micro Drive FC 51

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Contents Design Guide

Contents

1 Introduction

1.1 Available Literature

1.2 Manual and Software Version

1.3 Abbreviations

1.4 Denitions

1.5 Power Factor

2 Safety and Conformity

2.1 Safety

2.2 Disposal Instruction

2.3 Approvals

2.4 CE Labeling

2.6 Aggressive Environments

2.7 Vibration and Shock

2.8 Advantages

3 Product Overview

3.1 Control Structures

3.1.1 Control Structure Open Loop 18

3.1.2 Local (Hand On) and Remote (Auto On) Control 18

3.1.3 Control Structure Closed Loop 18

3.1.4 Reference Handling 20

3.2 General Aspects of EMC

3.2.1 General Aspects of EMC Emissions 21

3.2.2 Emission Requirements 22

3.2.3 EMC Test Results (Emission) 22

3.2.4 Harmonics Emission Requirements 23

3.2.5 Immunity Requirements 23

3.3 Galvanic Isolation (PELV)

3.4 Ground Leakage Current

3.5 Extreme Running Conditions

3.5.1 Motor Thermal Protection 24

4 Selection

4.1 Options and Accessories

4.1.1 Local Control Panel (LCP) 26

4.1.2 Remote Mounting Kit for LCP 26

4.1.3 FC 51 Remote Mounting Kit Mounting Instruction 26

4.1.4 IP21/TYPE 1 Enclosure Kit 28

4.1.5 Type 1 (NEMA) 28

Contents

VLT® Micro Drive FC 51

4.1.6 Decoupling Plate 28

4.1.7 FC 51 Type 1 Kit Mounting Instruction for M1, M2 and M3 29

4.1.8 FC 51 Type 1 Kit Mounting Instruction for M4 and M5 29

4.1.9 FC 51 IP21 Kit Mounting Instruction 30

4.1.10 FC 51 Decoupling Plate Mounting Instruction for M1 and M2 31

4.1.11 FC 51 Decoupling Plate Mounting Instruction for M3 31

4.1.12 FC 51 Decoupling Plate Mounting Instruction for M4 and M5 32

4.1.13 FC 51 DIN Rail Kit Mounting Instruction 33

4.1.14 Line Filter MCC 107 Installation Instructions 33

4.1.15 Mounting 34

4.1.16 Wiring 34

4.1.17 Dimensions 35

4.2 Special Conditions

4.2.1 Purpose of Derating 36

4.2.2 Derating for Ambient Temperature 36

4.2.3 Derating for Low Air Pressure 37

4.2.4 Automatic Adaptations to Ensure Performance 37

4.2.5 Derating for Running at Low Speed 37

5 How to Order

5.1 Drive Congurator

5.2 FC Identication

5.3 Type Code

5.4 Ordering Numbers

5.5 Options

6 How to Install

6.1 Before Starting

6.2 Side-by-Side Installation

6.3 Before Commencing Repair Work

6.4 Mechanical Dimensions

6.5 Electrical Installation in General

6.6 Fuses

6.7 Mains Connection

6.8 Motor Connection

6.9 Use of EMC-Correct Cables

6.10 Grounding of Shielded/Armored Control Cables

6.11 Residual Current Device

6.12 Electrical Overview

6.12.1 Power Circuit - Overview 50

6.13 Electrical Installation and Control Cables

Contents Design Guide

6.14 Control Terminals

6.14.1 Access to Control Terminals 51

6.14.2 Connecting to Control Terminals 52

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 56

6.20.2 Safety Ground Connection 56

7 Programming

7.1 How to Programme

7.1.2 Programming with the LCP 11 or LCP 12 57

7.2 Status Menu

7.3 Quick Menu

7.4 Quick Menu Parameters

7.5 Main Menu

7.6 Quick Transfer of Parameter Settings between Multiple Frequency Converters

7.7 Readout and Programming of Indexed Parameters

7.8 Initialize the Frequency Converter to Default Settings in two Ways

8 RS485 Installation and Set-up

8.1 RS485 Installation and Set-up

8.1.1 Overview 65

8.1.2 Network Connection 65

8.1.3 Frequency Converter Hardware Set-up 65

8.1.4 EMC Precautions 66

8.2 FC Protocol Overview

8.3 Network Conguration

8.4 FC Protocol Message Framing Structure

8.4.1 Content of a Character (byte) 67

8.4.2 Telegram Structure 67

8.4.3 Telegram Length (LGE) 68

8.4.4 Frequency Converter Address (ADR) 68

8.4.5 Data Control Byte (BCC) 68

8.4.6 The Data Field 68

8.4.7 The PKE Field 69

8.4.8 Parameter Number (PNU) 70

8.4.9 Index (IND) 70

Contents

VLT® Micro Drive FC 51

8.4.10 Parameter Value (PWE) 70

8.4.11 Data Types Supported by the Frequency Converter 70

8.4.12 Conversion 70

8.4.13 Process Words (PCD) 70

8.5 Examples

8.6 Modbus RTU Overview

8.6.1 Prerequisite Knowledge 71

8.6.2 What the User Should Already Know 71

8.6.3 Overview 71

8.6.4 Frequency Converter with Modbus RTU 72

8.7 Network Conguration

8.8 Modbus RTU Message Framing Structure

8.8.1 Introduction 72

8.8.2 Modbus RTU Telegram Structure 73

8.8.3 Start/Stop Field 73

8.8.4 Address Field 73

8.8.6 Data Field 73

8.8.7 CRC Check Field 73

8.8.8 Coil Register Addressing 74

8.8.9 How to Control the Frequency Converter 75

8.8.10 Function Codes Supported by Modbus RTU 75

8.8.11 Modbus Exception Codes 76

8.9 How to Access Parameters

8.9.1 Parameter Handling 76

8.9.2 Storage of Data 76

8.10 Examples

8.10.1 Read Coil Status (01 hex) 77

8.10.2 Force/Write Single Coil (05 hex) 77

8.10.3 Force/Write Multiple Coils (0F hex) 78

8.10.4 Read Holding Registers (03 hex) 78

8.10.5 Preset Single Register (06 hex) 79

8.10.6 Preset Multiple Registers (10 hex) 79

8.11 FC Drive Control Prole

8.11.1 Control Word According to FC Prole 80

8.11.2 Status Word According to FC Prole (STW) 81

8.11.3 Bus Speed Reference Value 83

9 Specications

Index

Introduction Design Guide

1 Introduction

1.1 Available Literature

This design guide contains the basic information necessary for installing and running the frequency converter.

Danfoss technical literature is available in print from local Danfoss Sales

drives.danfoss.com/support/technical-documentation/

•

Manual and Software Version

1.2

This manual is regularly reviewed and updated. All suggestions for improvement are welcome. Table 1.1 shows the manual version and the corresponding software version.

Edition Remarks Software version

MG02K4XX Miscellaneous minor

Table 1.1 Manual and Software Version

Oces or online at: www.vlt-

VLT® Micro Drive FC 51 Quick Guide

VLT® Micro Drive FC 51 Programming Guide

VLT® Micro Drive FC 51 LCP Mounting Instruction

Micro Drive FC 51 De-coupling Plate Mounting

VLT Instruction

VLT® Micro Drive FC 51 Remote Mounting Kit Mounting Instruction

Micro Drive FC 51 DIN Rail Kit Mounting

VLT Instruction

VLT® Micro Drive FC 51 IP21 Kit Mounting Instruction

VLT

Micro Drive FC 51 Nema1 Kit Mounting

Instruction

VLT® Micro Drive FC 51 Line Filter MCC 107 Installation Instruction

3.1X

updates.

Abbreviations

1.3

°C

A Ampere/AMP

AC Alternating current

AMT Automatic motor tuning

AWG American wire gauge

DC Direct current

EMC Electro magnetic compatibility

ETR Electronic thermal relay

FC Frequency converter

M,N

g Gram

Hz Hertz

INV

LIM

M,N

VLT,MAX

VLT,N

kHz Kilohertz

LCP Local control panel

m Meter

mA Milliampere

MCT Motion control tool

mH Millihenry inductance

min Minute

ms Millisecond

nF Nanofarad

Nm Newton meters

M,N

PCB Printed circuit board

PELV Protective extra low voltage

RPM Revolutions per minute

Regen Regenerative terminals

s Second

LIM

M,N

V Volt

Degrees celsius

Nominal motor frequency

Rated inverter output current

Current limit

Nominal motor current

The maximum output current

The rated output current supplied by the

frequency converter

Synchronous motor speed

Nominal motor power

Torque limit

Nominal motor voltage

1 1

Table 1.2 Abbreviations

175ZA078.10

Pull-out

rpm

Torque

Introduction

VLT® Micro Drive FC 51

1.4 Denitions

Break-away torque

1.4.1 Frequency Converter

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

The connected motor can be started and stopped with LCP and the digital inputs. Functions are divided into 2 groups. Functions in group 1 have higher priority than functions in group 2.

Group 1 Reset, coast stop, reset and coast stop, quick

stop, DC brake, stop, and the [O] key.

Group 2 Start, pulse start, reversing, start reversing, jog,

and freeze output.

Table 1.3 Function Groups

Illustration 1.1 Break-away Torque

VLT

The eciency of the frequency converter is dened as the ratio between the power output and the power input.

Start-disable command

A stop command belonging to the group 1 control commands, see Table 1.3.

Stop command

See Table 1.3.

1.4.3 Motor

JOG

The motor frequency when the jog function is activated (via digital terminals).

The motor frequency.

MAX

The maximum motor frequency.

MIN

The minimum motor frequency.

M,N

The rated motor frequency (nameplate data).

The motor current.

M,N

The rated motor current (nameplate data).

M,N

The nominal motor speed (nameplate data).

M,N

The rated motor power (nameplate data).

The instant motor voltage.

M,N

The rated motor voltage (nameplate data).

1.4.4 References

Analog reference

A signal transmitted to the analog inputs 53 or 54, can be voltage or current.

Bus reference

A signal transmitted to the serial communication port (FC port).

Preset reference

A dened preset reference to be set from -100% to +100% of the reference range. Selection of 8 preset references via the digital terminals.

Ref

MAX

Determines the relationship between the reference input at 100% full scale value (typically 10 V, 20 mA) and the resulting reference. The maximum reference value set in parameter 3-03 Maximum Reference.

Ref

MIN

Determines the relationship between the reference input at 0% value (typically 0 V, 0 mA, 4 mA) and the resulting reference. The minimum reference value set in parameter 3-02 Minimum Reference.

Introduction Design Guide

1.4.5 Miscellaneous

Analog inputs

The analog inputs are used for controlling various functions of the frequency converter. There are 2 types of analog inputs:

Current input, 0–20 mA and 4–20 mA

•

Voltage input, 0–10 V DC.

•

Analog outputs

The analog outputs can supply a signal of 0–20 mA, 4–20 mA, or a digital signal.

Automatic Motor Tuning, AMT

AMT algorithm determines the electrical parameters for the connected motor at standstill.

Brake resistor

The brake resistor is a module capable of absorbing the brake power generated in regenerative braking. This regenerative brake power increases the DC-link voltage, and a brake chopper ensures that the power is transmitted to the brake resistor.

CT characteristics

Constant torque characteristics used for all applications such as conveyor belts, displacement pumps, and cranes.

Digital inputs

The digital inputs can be used for controlling various functions of the frequency converter.

Relay outputs

The frequency converter features 2 programmable relay outputs.

ETR

Electronic thermal relay is a thermal load calculation based on present load and time. Its purpose is to estimate the motor temperature.

Initializing

If initializing is carried out (parameter 14-22 Operation Mode), the programmable parameters of the frequency

converter return to their default settings. Initializing parameter 14-22 Operation Mode does not initialize communication parameters.

Intermittent duty cycle

An intermittent duty rating refers to a sequence of duty cycles. Each cycle consists of an on-load and an period. The operation can be either periodic duty or noneperiodic duty.

LCP

The local control panel makes up a complete interface for control and programming of the frequency converter. The control panel is detachable and can be installed up to 3 m from the frequency converter, that is, in a front panel with the installation kit option.

lsb

Least signicant bit.

o-load

MCM

Short for Mille Circular Mil, an American measuring unit for cable cross-section. 1 MCM ≡ 0.5067 mm2.

msb

Most signicant bit.

On-line/O-line parameters

Changes to on-line parameters are activated immediately after the data value is changed. To activate changes to o- line parameters, press [OK].

PI controller

The PI controller maintains the speed, pressure, temperature, and so on, by adjusting the output frequency to match the varying load.

RCD

Residual current device.

Set-up

Save parameter settings in 2 set-ups. Change between the 2 parameter set-ups and edit 1 set-up, while another setup is active.

Slip compensation

The frequency converter compensates for the motor slip by giving the frequency a supplement that follows the measured motor load keeping the motor speed almost constant.

Smart logic control (SLC)

The SLC is a sequence of user-dened actions executed when the associated user-dened events are evaluated as true by the SLC.

Thermistor

A temperature-dependent resistor.

STW

Status word.

FC standard bus

Includes RS485 bus with FC protocol.

Trip

A state entered in fault situations, for example, if the frequency converter is subject to an overtemperature or when the frequency converter is protecting the motor, process, or mechanism. Restart is prevented until the cause of the fault has disappeared and the trip state is canceled by activating reset or, sometimes, by being programmed to reset automatically. Do not use trip for personal safety.

Trip lock

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 trip lock can only be canceled by cutting o mains, removing the cause of the fault, and reconnecting the frequency converter. Restart is prevented until the trip state is canceled by activating reset or, sometimes, by being programmed to reset automatically. Trip lock may not be used for personal safety.

1 1

Introduction

VLT® Micro Drive FC 51

VT characteristics

Variable torque characteristics used for pumps and fans.

VVC

If compared with standard voltage/frequency ratio control, voltage vector control (VVC+) improves the dynamics and the stability, both when the speed reference is changed and in relation to the load torque.

1.5 Power Factor

The power factor is the relation between I

3 × U × I

Power factor =

3 × U × I

1 ×COS ϕ

RMS

The power factor for 3-phase control:

Power factor =

I1 × cosϕ1

RMS

sincecosϕ1 = 1

RMS

The power factor indicates to which extent the frequency converter imposes a load on the supply. The lower the power factor, the higher the I same kW performance.

= I

 + I

RMS

 + I

 +  .  .  + I

In addition, a high-power factor indicates that the dierent harmonic currents are low.

and I

RMS

for the

Safety and Conformity Design Guide

2 Safety and Conformity

2.1 Safety

The following symbols are used in this manual:

WARNING

Indicates a potentially hazardous situation that could result in death or serious injury.

CAUTION

Indicates a potentially hazardous situation that could result in minor or moderate injury. It can also be used to alert against unsafe practices.

NOTICE

Indicates important information, including situations that can result in damage to equipment or property.

2.1.1 Safety Precautions

WARNING

UNINTENDED START

When the frequency converter is connected to AC mains, DC supply, or load sharing, the motor may start at any time. Unintended start during programming, service, or repair work can result in death, serious injury, or property damage. The motor can start with an external switch, a eldbus command, an input reference signal from the LCP or LOP, via remote operation using MCT 10 Set-up Software, or after a cleared fault condition.

To prevent unintended motor start:

Press [O/Reset] on the LCP before

•

programming parameters.

Disconnect the frequency converter from the

•

mains.

Completely wire and assemble the frequency

•

converter, motor, and any driven equipment before connecting the frequency converter to AC mains, DC supply, or load sharing.

2 2

WARNING

HIGH VOLTAGE

Frequency converters contain high voltage when connected to AC mains input, DC supply, or load sharing. Failure to perform installation, start-up, and maintenance by qualied personnel can result in death or serious injury.

Only qualied personnel must perform instal-

•

lation, start-up, and maintenance.

WARNING

DISCHARGE TIME

The frequency converter contains DC-link capacitors, which can remain charged even when the frequency converter is not powered. High voltage can be present even when the warning LED indicator lights are o. Failure to wait the specied time after power has been removed before performing service or repair work can result in death or serious injury.

Stop the motor.

•

Disconnect AC mains and remote DC-link power

•

supplies, including battery back-ups, UPS, and DC-link connections to other frequency converters.

Disconnect or lock PM motor.

•

Wait for the capacitors to discharge fully. The

•

minimum duration of waiting time is specied in Table 2.1.

Before performing any service or repair work,

•

use an appropriate voltage measuring device to make sure that the capacitors are fully discharged.

Size Minimum waiting time (minutes)

M1, M2, and M3 4

M4 and M5 15

Table 2.1 Discharge Time

Safety and Conformity

VLT® Micro Drive FC 51

WARNING

LEAKAGE CURRENT HAZARD

Leakage currents exceed 3.5 mA. Failure to ground the frequency converter properly can result in death or serious injury.

Ensure the correct grounding of the equipment

•

by a certied electrical installer.

WARNING

EQUIPMENT HAZARD

Contact with rotating shafts and electrical equipment can result in death or serious injury.

Ensure that only trained and qualied personnel

•

perform installation, start-up, and maintenance.

Ensure that electrical work conforms to national

•

and local electrical codes.

Follow the procedures in this guide.

•

WARNING

UNINTENDED MOTOR ROTATION WINDMILLING

Unintended rotation of permanent magnet motors creates voltage and can charge the unit, resulting in death, serious injury, or equipment damage.

Ensure that permanent magnet motors are

•

blocked to prevent unintended rotation.

CAUTION

INTERNAL FAILURE HAZARD

An internal failure in the frequency converter can result in serious injury when the frequency converter is not properly closed.

Ensure that all safety covers are in place and

•

securely fastened before applying power.

2.2 Disposal Instruction

Equipment containing electrical

components cannot be disposed of

together with domestic waste.

It must be separately collected with

electrical and electronic waste according

to local and currently valid legislation.

The frequency converter complies with UL 508C thermal memory retention requirements. For more information refer to chapter 3.5.1 Motor Thermal Protection.

2.4 CE Labeling

2.4.1 CE Conformity and Labeling

What is CE conformity and labeling?

The purpose of CE labelling is to avoid technical trade obstacles within EFTA and the EU. The EU has introduced the CE label as a simple way of showing whether a product complies with the relevant EU directives. The CE label says nothing about the specications or quality of the product. Frequency converters are regulated by 3 EU directives:

The Machinery Directive (98/37/EEC)

All machines with critical moving parts are covered by the machinery directive of January 1, 1995. Since a frequency converter is largely electrical, it does not fall under the machinery directive. However, if a frequency converter is supplied for use in a machine, Danfoss provides information on safety aspects relating to the frequency converter. Danfoss does this with a manufacturer's declaration.

The Low Voltage Directive (73/23/EEC)

Frequency converters must be CE labeled in accordance with the Low Voltage Directive of January 1, 1997. The directive applies to all electrical equipment and appliances used in the 50–1000 V AC and the 75–1500 V DC voltage ranges. Danfoss CE-labels in accordance with the directive and issues a declaration of conformity on request.

The EMC Directive (2004/108/EC)

EMC is short for electromagnetic compatibility. The presence of electromagnetic compatibility means that the mutual interference between appliances does not aect the way the appliances work. The EMC directive came into eect January 1, 1996. Danfoss CE-labels in accordance with the directive and issues a declaration of conformity after request. To carry out EMC-correct installation, see the instructions in this design guide. In addition, Danfoss species which standards our products comply with. Danfoss oers the lters presented in the specications and provide other types of assistance to ensure the optimum EMC result.

The frequency converter is most often used by professionals of the trade as a complex component forming part of a larger appliance, system, or installation. Note that the responsibility for the nal EMC properties of the appliance, system or installation rests with the installer.

dierent components/

2.3 Approvals

Safety and Conformity Design Guide

2.4.2 What is Covered

The EU Guidelines on the Application of Council Directive 89/336/EEC outline 3 typical situations of using a frequency converter. See chapter 2.4.3 Danfoss Frequency Converter and CE Labelling for EMC coverage and CE labelling.

The frequency converter is sold directly to the

•

end-consumer. The frequency converter is for example sold to a DIY market. The end-consumer is a layman. The end-consumer installs the frequency converter himself for use with a hobby machine, a kitchen appliance, and so on. For such applications, the frequency converter must be CE labeled in accordance with the EMC directive.

The frequency converter is sold for installation in

•

a plant. The plant is built up by professionals of the trade. It could be a production plant or a heating/ventilation plant designed and installed by professionals of the trade. Neither the frequency converter nor the be CE labeled under the EMC directive. However, the unit must comply with the basic EMC requirements of the directive. This is ensured by using components, appliances, and systems that are CE labeled under the EMC directive.

The frequency converter is sold as part of a

•

complete system. The system is being marketed as complete and could for example, be an airconditioning system. The complete system must be CE labeled in accordance with the EMC directive. The manufacturer can ensure CE labelling under the EMC directive either by using CE labeled components or by testing the EMC of the system. It is not necessary to test the entire system if only CE labeled components are selected.

nished plant has to

2.4.3 Danfoss Frequency Converter and CE Labelling

guarantees compliance with the Low Voltage Directive. Danfoss issues a declaration of conformity that conrms our CE labelling in accordance with the Low Voltage Directive.

The CE label also applies to the EMC directive if the instructions for EMC-correct installation and ltering are followed. On this basis, a declaration of conformity in accordance with the EMC directive is issued.

The design guide to ensure EMC-correct installation. Furthermore, Danfoss species which our dierent products comply with.

Danfoss provides other types of assistance that can help to obtain the best EMC result.

oers detailed instructions for installation

2.4.4 Compliance with EMC Directive 2004/108/EC

As mentioned, the frequency converter is mostly used by professionals of the trade as a complex component forming part of a larger appliance, system, or installation. Note that the responsibility for the nal EMC properties of the appliance, system, or installation rests with the installer. As an aid to the installer, Danfoss has prepared EMC installation guidelines for the power drive system. If the EMCcorrect instructions for installation are followed, the standards and test levels stated for power drive systems are complied with.

Air Humidity

2.5

The frequency converter has been designed to meet the IEC/EN 60068-2-3 standard, EN 50178 9.4.2.2 at 50 °C (122 °F).

Aggressive Environments

2.6

A frequency converter contains many mechanical and electronic components. All are to some extent vulnerable to environmental eects.

2 2

CE labelling is a positive feature when used for its original purpose, that is, to facilitate trade within the EU and EFTA.

However, CE labelling may cover many dierent speci- cations. Check what a given CE label specically covers.

The covered specications can be dierent and a CE label may therefore give the installer a false feeling of security when using a frequency converter as a component in a system or an appliance.

Danfoss CE labels the frequency converters in accordance with the Low Voltage Directive. This means that if the frequency converter is installed correctly, Danfoss

CAUTION

Do not install the frequency converter in environments with airborne liquids, particles, or gases that may aect or damage the electronic components. Failure to take necessary protective measures increases the risk of stoppages, potentially causing equipment damage and personnel injury.

Liquids can be carried through the air and condense in the frequency converter and may cause corrosion of components and metal parts. Steam, oil, and salt water may cause corrosion of components and metal parts. In such environments, use equipment with enclosure rating

130BA780.11

SYSTEM CURVE

FAN CURVE

PRESSURE %

100

120

20 40 60 80 100 120 140 160 180

VOLUME %

Safety and Conformity

VLT® Micro Drive FC 51

IP54. As an extra protection, coated printed circuit boards

Advantages

2.8

can be ordered as an option (standard on some power sizes).

2.8.1 Why use a Frequency Converter for Controlling Fans and Pumps?

Airborne particles such as dust may cause mechanical, electrical, or thermal failure in the frequency converter. A typical indicator of excessive levels of airborne particles is dust particles around the frequency converter fan. In dusty environments, use equipment with enclosure rating IP54 or

A frequency converter takes advantage of the fact that centrifugal fans and pumps follow the laws of proportionality for such fans and pumps. For further information, see chapter 2.8.3 Example of Energy Savings.

a cabinet for IP20/TYPE 1 equipment.

2.8.2 The Clear Advantage - Energy Savings

In environments with high temperatures and humidity, corrosive gases such as sulphur, nitrogen, and chlorine compounds cause chemical processes on the frequency converter components.

Such chemical reactions rapidly

aect and damage the electronic components. In such environments, mount the equipment in a cabinet with fresh air ventilation, keeping aggressive gases away from the frequency converter. An extra protection in such areas is a coating of the printed circuit boards, which can be ordered as an option.

Before installing the frequency converter, check the ambient air for liquids, particles, and gases. This is done by observing existing installations in this environment. Typical indicators of harmful airborne liquids are water or oil on metal parts, or corrosion of metal parts.

The clear advantage of using a frequency converter for controlling the speed of fans or pumps lies in the electricity savings. When comparing with alternative control systems and technologies, a frequency converter is the optimum energy control system for controlling fan and pump systems.

Excessive dust particle levels are often found on installation cabinets and existing electrical installations. One indicator of aggressive airborne gases is blackening of copper rails and cable ends on existing installations.

Vibration and Shock

2.7

Illustration 2.1 Fan Curves (A, B, and C) for Reduced Fan

Volumes

The frequency converter has been tested according to the procedure based on the shown standards, Table 2.2.

The frequency converter complies with requirements that exist for units mounted on the walls and oors of production premises, and in panels bolted to walls or

oors.

IEC/EN 60068-2-6 Vibration (sinusoidal) - 1970

IEC/EN 60068-2-64 Vibration, broad-band random

Table 2.2 Standards

120

100

20 40 60 80 100 120 140 160 180

120

100

0 20 40 60 80 100 120 140 160 180

Volume %

INPUT POWER % PRESSURE %

SYSTEM CURVE

FAN CURVE

130BA781.11

ENERGY CONSUMED

100%

50%

25%

12,5%

50% 100%

80%

175HA208.10

Power ~n

Pressure ~n

Flow ~n

Safety and Conformity Design Guide

Illustration 2.3 Laws of Proportionally

Flow: 

Pressure: 

Power: 

 = 

2 2

Illustration 2.2 Energy Savings with Frequency Converter

Solution

When using a frequency converter to reduce fan capacity to 60% - more than 50% energy savings may be obtained in typical applications.

2.8.3 Example of Energy Savings

As shown in Illustration 2.3, the ow is controlled by changing the RPM. By reducing the speed by only 20% from the rated speed, the ow is also reduced by 20%. This is because the ow is directly proportional to the RPM. The consumption of electricity, however, is reduced by 50%. If the system in question only needs to be able to supply a ow that corresponds to 100% a few days in a year, while the average is below 80% of the rated ow for the remainder of the year, the amount of energy saved is even more than 50%.

Illustration 2.3 describes the dependence of and power consumption on RPM.

ow, pressure,

Q=Flow P=Power

Q1=Rated ow P1=Rated power

Q2=Reduced ow P2=Reduced power

H=Pressure n=Speed control

H1=Rated pressure n1=Rated speed

H2=Reduced pressure n2=Reduced speed

Table 2.3 The Laws of Proportionality

2.8.4 Comparison of Energy Savings

The Danfoss frequency converter solution oers major savings compared with traditional energy saving solutions such as discharge damper solution and inlet guide vanes (IGV) solution. This is because the frequency converter is able to control fan speed according to thermal load on the system, and the frequency converter has a built-in facility that enables the frequency converter to function as a building management system, BMS.

Illustration 2.3 shows typical energy savings obtainable with 3 well-known solutions when fan volume is reduced to 60%. As the graph shows, more than 50% energy savings can be achieved in typical applications.

130BA782.10

Discharge damper

Less energy savings

IGV

Costlier installation

Maximum energy savings

130BA779.12

0 60 0 60 0 60

100

Discharge Damper Solution

IGV Solution

VLT Solution

Energy consumed

Input power %

Volume %

500

[h]

1000

1500

2000

200100 300

/h]

400

175HA210.11

Safety and Conformity

VLT® Micro Drive FC 51

2.8.5 Example with Varying Flow over 1 Year

This example is calculated based on pump characteristics obtained from a pump datasheet. The result obtained shows energy savings more than 50% at the given ow distribution over a year. The payback period depends on the price per kWh and the price of frequency converter. In this example, it is less than a year when compared with valves and constant speed.

Energy savings

shaft=Pshaft output

Illustration 2.4 The 3 Common Energy Saving Systems

Illustration 2.6 Flow Distribution over 1 Year

Illustration 2.5 Energy Savings

Discharge dampers reduce power consumption. Inlet guide vanes oer a 40% reduction, but are expensive to install. The Danfoss frequency converter solution reduces energy consumption with more than 50% and is easy to install. It

and extends the life span of the entire application.

also reduces noise, mechanical stress and wear-and-tear,

175HA209.11

0 100 200 300 400

(mwg)

750rpm

1050rpm

1350rpm

1650rpm

(kW)

200100 300

(

m3 /h

)

(

m3 /h

)

400

750rpm

1050rpm

1350rpm

1650rpm

shaft

Full load

% Full-load current

& speed

500

100

0 12,5 25 37,5 50Hz

200

300

400

600

700

800

175HA227.10

Safety and Conformity Design Guide

Simple control of process (ow, level, or pressure) utilizing the built-in PI control.

2.8.7 Star/Delta Starter or Soft Starter not Required

When larger motors are started, it is necessary in many countries to use equipment that limits the start-up current. In more traditional systems, a star/delta starter or soft starter is widely used. Such motor starters are not required if a frequency converter is used.

As illustrated in Illustration 2.8, a frequency converter does not consume more than rated current.

2 2

Illustration 2.7 Energy

m3/

Distri-

bution

Valve regulation Frequency converter

% Hours Power Consump-

A1 - B

350 5 438 42.5 18.615 42.5 18.615

300 15 1314 38.5 50.589 29.0 38.106

250 20 1752 35.0 61.320 18.5 32.412

200 20 1752 31.5 55.188 11.5 20.148

150 20 1752 28.0 49.056 6.5 11.388

100 20 1752 23.0 40.296 3.5 6.132

100 8760 275.064 26.801

Table 2.4 Result

2.8.6 Better Control

If a frequency converter is used for controlling the ow or pressure of a system, improved control is obtained. A frequency converter can vary the speed of the fan or pump, obtaining variable control of ow and pressure. Furthermore, a frequency converter can quickly adapt the speed of the fan or pump to new ow or pressure conditions in the system.

tion

kWh A1 - C

control

Power Consump-

tion

kWh

VLT® Micro Drive

2 Star/delta starter

3 Soft starter

4 Start directly on mains

Illustration 2.8 Current

2.8.8 Using a Frequency Converter Saves Money

The example in chapter 2.8.9 Without a Frequency Converter shows that a frequency converter replaces other equipment. It is possible to calculate the cost of installing the 2 dierent systems. In the example, the 2 systems can be established at roughly the same price.

Use the VLT® Energy Box software that is introduced in chapter 1.1 Available Literature to calculate the cost savings that can be achieved by using a frequency converter.

- +

x6 x6

175HA205.12

Valve position

Starter

Fuses

supply

P.F.C

Flow

3-Port valve

Bypass

Return

Control

Supply air

V.A.V outlets

Duct

P.F.C

Mains

Fuses

Starter

Bypass

supply

Return

valve

3-Port

Flow

Control

Valve position

Starter

Power Factor Correction

Mains

IGV

Mechanical linkage and vanes

Fan

Motor or actuator

Main B.M.S

Local D.D.C. control

Sensors PT

Pressure control signal 0/10V

Temperature control signal 0/10V

Control

Mains

Cooling section Heating section

Fan sectionInlet guide vane

Pump Pump

Safety and Conformity

VLT® Micro Drive FC 51

2.8.9 Without a Frequency Converter

D.D.C. Direct digital control

E.M.S. Energy management system

V.A.V. Variable air volume

Sensor P Pressure

Sensor T Temperature

Illustration 2.9 Traditional Fan System

175HA206.11

Pump

Flow

Return

Supply air

V.A.V

outlets

Duct

Mains

Pump

Return

Flow

Mains

Fan

Main B.M.S

Local D.D.C. control

Sensors

Mains

Cooling section Heating section

Fan section

Pressure control 0-10V or 0/4-20mA

Control temperature 0-10V or 0/4-20mA

VLT

- +

VLT

x3 x3

Safety and Conformity Design Guide

2.8.10 With a Frequency Converter

2 2

D.D.C. Direct digital control

E.M.S. Energy management system

V.A.V. Variable air volume

Sensor P Pressure

Sensor T Temperature

Illustration 2.10 Fan System Controlled by Frequency Converters

130BB892.10

100%

-100%

100%

Local reference scaled to Hz

Auto mode

Hand mode

LCP Hand on, oﬀ and auto on keys

Local

Remote

Reference

Ramp

P 4-10 Motor speed direction

To motor control

Reference handling Remote reference

P 4-14 Motor speed high limit [Hz]

P 4-12 Motor speed low limit [Hz]

P 3-4* Ramp 1 P 3-5* Ramp 2

Hand On

Oﬀ Reset

Auto On

130BB893.10

Product Overview

3 Product Overview

3.1 Control Structures

VLT® Micro Drive FC 51

Select the conguration mode in parameter 1-00 Conguration Mode.

3.1.1 Control Structure Open Loop

Illustration 3.1 Open-loop Structure

In the conguration shown in Illustration 3.1, parameter 1-00 Conguration Mode is set to [0] Open loop.

The resulting reference from the reference handling system or the local reference is received and fed through the ramp limitation and speed limitation before being sent to the motor control. The output from the motor control is then limited by the maximum frequency limit.

frequency converter via the digital inputs and RS485. See more about starting, stopping, changing ramps and parameter set-ups, and so on, in parameter group 5-1*

Digital Inputs or parameter group 8-5* Serial Communication.

3.1.2 Local (Hand On) and Remote (Auto On) Control

The frequency converter can be operated manually via the local control panel (LCP) or remotely via analog/digital inputs or eldbus. If allowed in parameter 0-40 [Hand on]

Key on LCP, parameter 0-44 [O/Reset] Key on LCP, and parameter 0-42 [Auto on] Key on LCP, it is possible to start

and stop the frequency converter by pressing the [Hand On] and [O/Reset] keys. Alarms can be reset via the [O/ Reset] key. After pressing the [Hand On] key, the frequency converter goes into hand mode and follows (by default) the local reference set using the LCP potentiometer (LCP

12) or [▲]/[▼] (LCP 11). The potentiometer can be disabled

using parameter 6-80 LCP Potmeter Enable. If the potenti- ometer is disabled, use the navigation keys for adjusting reference.

After pressing the [Auto On] key, the frequency converter goes into auto mode and follows (by default) the remote reference. In this mode, it is possible to control the

Illustration 3.2 LCP Control Keys

Local reference forces the conguration mode to open loop, independent on the setting of 1-00 Conguration Mode.

Local reference is restored at power-down.

3.1.3 Control Structure Closed Loop

The internal controller allows the frequency converter to become a 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 setpoint reference value and determines the error, if any, between these 2 signals. It then adjusts the speed of the motor to correct this error.

7-30 PI

Normal/Inverse

Control

Reference

Feedback

Scale to speed

P 4-10

Motor speed

direction

To motor control

130BB894.11

100%

-100%

100%

*[-1]

Product Overview Design Guide

For example, consider a pump application where the speed of a pump is to be controlled so that the static pressure in a pipe is constant. The static pressure value is supplied to the frequency converter as the setpoint reference. A static pressure sensor measures the actual static pressure in the pipe and supplies this data to the frequency converter as a feedback signal. If the feedback signal is greater than the

Illustration 3.3 Control Structure Closed Loop

While the default values for the closed-loop controller of the frequency converter often provide satisfactory performance, the control of the system can often be optimized by adjusting parameters.

setpoint reference, the frequency converter slows the pump down to reduce the pressure. In a similar way, if the pipe pressure is lower than the setpoint reference, the frequency converter automatically speeds the pump up to increase the pressure provided by the pump.

3 3

Speed open loop

Conguration mode

Input command:

freeze reference

Process control

Scale to Hz

Scale to process unit

Remote reference/ setpoint

±200% Feedback handling

Remote reference in %

maxRefPCT

minRefPct

min-max ref

Freeze reference & increase/ decrease reference

±100%

Input commands:

Speed up/speed down

±200%

Relative reference = X+X*Y/100

±200%

External reference in %

±200%

Parameter choise: Reference resource 1,2,3

±100%

Preset reference

Input command: preset ref bit0, bit1, bit2

Relative scalling reference

Intern resource

Preset relative reference ±100%

Preset reference 0 ±100% Preset reference 1 ±100% Preset reference 2 ±100%

Preset reference 3 ±100% Preset reference 4 ±100% Preset reference 5 ±100% Preset reference 6 ±100%

Preset reference 7 ±100%

Extern resource 1

No function

Analog reference ±200 %

Local bus reference ±200 % LCP potmeter 0~100 %

Extern resource 2

No function Analog reference ±200 %

Local bus reference ±200 % LCP potmeter 0~100 %

Extern resource 3 No function

Analog reference ±200 %

Local bus reference ±200 % LCP potmeter 0~100 %

130BB900.13

Product Overview

VLT® Micro Drive FC 51

3.1.4 Reference Handling

Details for open-loop and closed-loop operation.

Illustration 3.4 Block Diagram Showing Remote Reference

The remote reference consists of:

•

Up to 8 preset references can be programmed in the frequency converter. The active preset reference can be selected using digital inputs or the serial communications bus. The reference can also be supplied externally, most commonly from an analog input. This external source is selected by 1 of the 3 reference source parameters (parameter 3-15 Reference 1 Source,

parameter 3-16 Reference 2 Source, and parameter 3-17 Reference 3 Source). All reference resources

and the bus reference are added to produce the total external reference. The external reference, the preset reference, or the sum of the 2 can be selected to be the

Preset references.

External references (analog inputs and serial communication bus references).

The preset relative reference.

Feedback-controlled setpoint.

active reference. Finally, this reference can by be scaled using parameter 3-14 Preset Relative Reference.

The scaled reference is calculated as follows:

Reference = X  +  X × 

Where X is the external reference, the preset reference or

100

the sum of these and Y is parameter 3-14 Preset Relative Reference in [%].

If Y, parameter 3-14 Preset Relative Reference, is set to 0%, the reference is not

aected by the scaling.

175ZA062.12

Product Overview Design Guide

3.2 General Aspects of EMC

3.2.1 General Aspects of EMC Emissions

Frequency converters (and other electrical devices) generate electronic or magnetic elds that may interfere with their environment. The electromagnetic compatibility (EMC) of these eects depends on the power and the harmonic characteristics of the devices.

Uncontrolled interaction between electrical devices in a system can degrade compatibility and impair reliable operation. Interference may take the form of mains harmonics distortion, electrostatic discharges, rapid voltage uctuations, or high frequency interference. Electrical devices generate interference along with being aected by interference from other generated sources.

Electrical interference usually occurs at frequencies in the range 150 kHz to 30 MHz. Airborne interference from the frequency converter system in the range 30 MHz to 1 GHz is generated from the inverter, motor cable, and the motor. Capacitive currents in the motor cable coupled with a high dU/dt from the motor voltage generate leakage currents, as shown in Illustration 3.5. The use of a shielded motor cable increases the leakage current (see Illustration 3.5) because shielded cables have higher capacitance to ground than unshielded cables. If the leakage current is not interference on the mains in the radio frequency range below approximately 5 MHz. Since the leakage current (I1) is carried back to the unit through the shield (I3), there is, in principle, only a small electro-magnetic eld (I4) from the shielded motor cable according to Illustration 3.5.

ltered, it causes greater

The shield reduces the radiated interference, but increases the low-frequency interference on the mains. Connect the motor cable shield to the frequency converter enclosure and to the motor enclosure. Use the integrated shield clamps to avoid twisted-pair ends (pigtails). Pigtails increase the shield impedance at higher frequencies, which reduces the shield eect and increases the leakage current (I4). If a shielded cable is used for relay, control cable, signal interface, and brake, mount the shield on the enclosure at both ends. In some situations, it is necessary to break the shield to avoid current loops.

When placing the shield on a mounting plate for the frequency converter, ensure that the mounting plate is made of metal, to convey the shield currents back to the unit. Ensure good electrical contact from the mounting plate through the mounting screws to the frequency converter chassis.

When using unshielded cables, some emission requirements are not complied with, although most immunity requirements are observed.

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 cables and brake cables. The control electronics generate radio interference at frequencies higher than 50 MHz (airborne).

3 3

1 Ground wire 3 AC mains supply 5 Shielded motor cable

2 Shield 4 Frequency converter 6 Motor

Illustration 3.5 Generation of Leakage Currents

Product Overview

VLT® Micro Drive FC 51

3.2.2 Emission Requirements

Category Denition

The EMC product standard for frequency converters denes 4 categories (C1, C2, C3, and C4) with specied requirements for emission and immunity. Table 3.1 states the denition of the 4 categories and the equivalent classi-

cation from EN 55011.

Category Denition

C1 Frequency converters installed in

the rst environment (home and

oce) with a supply voltage less

than 1000 V.

C2 Frequency converters installed in

the rst environment (home and

oce) with a supply voltage less

than 1000 V, which are not plug-in

and not movable, and must be

installed and commissioned by a

professional.

C3 Frequency converters installed in

the second environment (industrial)

with a supply voltage lower than

1000 V.

Equivalent

emission class

in EN 55011

Class B

Class A Group 1

Class A Group 2

C4 Frequency converters installed in

the second environment with a

supply voltage equal to or above

1000 V, or rated current equal to or

above 400 A, or intended for use in

complex systems.

Table 3.1 Correlation between IEC 61800-3 and EN 55011

When the generic (conducted) emission standards are used, the frequency converters are required to comply with the limits in Table 3.2.

Environment

First

environment

(home and

oce)

Second

environment

(industrial

environment)

Generic emission

standard

EN/IEC 61000-6-3 Emission

standard for residential,

commercial, and light

industrial environments.

EN/IEC 61000-6-4 Emission

standard for industrial

environments.

Equivalent

emission class

in EN 55011

No limit line.

Make an EMC

plan.

Equivalent

emission class in

EN 55011

Class B

Class A Group 1

Table 3.2 Correlation between Generic Emission Standards and

EN 55011

3.2.3 EMC Test Results (Emission)

FC type Conducted emission. Maximum shielded cable length [m] Radiated emission

Industrial environment

EN 55011 Class A2 EN 55011 Class A1 EN 55011 Class B EN 55011 Class A2 EN 55011 Class A1

Without

external

lter

≤2.2 kW.

Single-

phase, 230 V

≤7.5 kW. Up

to 500 V AC,

3-phase

11–22 kW.

Up to 500 V

AC, 3-phase

Table 3.3 EMC Test Result

25 – 15 50 5 15 Yes – No Yes

25 – 15 50 – 15 Yes – No Yes

With

external

lter

Without

external

lter

With

external

lter

Housing, trades, and

light industries

Without

external

lter

With

external

lter

Without

external

lter

Industrial environment

With

external

lter

Without

external

lter

With

external

lter

SMPS

130BB896.10

130BB901.10

Product Overview Design Guide

3.2.4 Harmonics Emission Requirements

Equipment connected to the public supply network

NOTICE

Without a power option, the frequency converter may not comply with harmonics emission requirements.

Options Denition

1 IEC/EN 61000-3-2 Class A for 3-phase balanced

equipment (for professional equipment only up to 1

kW total power).

2 IEC/EN 61000-3-12 Equipment 16 A-75 A and profes-

sional equipment as from 1 kW up to 16 A phase

current.

Table 3.4 Harmonics Emission Requirements

3.2.5 Immunity Requirements

The immunity requirements for frequency converters depend on the environment where they are installed. The requirements for the industrial environment are higher than the requirements for the home and oce environment. All Danfoss frequency converters comply with the requirements for the industrial environment and therefore comply also with the lower requirements for home and oce environment with a large safety margin.

0.25–22 kW (0.34–30 hp)

3 3

1 Supply (SMPS)

2 Optocouplers, communication between AOC and BOC

3 Custom relays

a Control card terminals

Illustration 3.6 Galvanic Isolation

30–90 kW (40–120 hp)

Galvanic Isolation (PELV)

3.3

PELV oers protection through extra low voltage. Protection against electric shock is ensured when the electrical supply is of the PELV type and the installation is made as described in local/national regulations on PELV supplies.

All control terminals and relay terminals 01-03/04-06 comply with PELV (protective extra low voltage) (does not apply to grounded delta leg above 440 V).

Galvanic (ensured) isolation is obtained by

fullling

requirements for higher isolation and by providing the relevant creapage/clearance distances. These requirements are described in the EN 61800-5-1 standard.

The components that make up the electrical isolation, as described, also comply with the requirements for higher isolation and the relevant test as described in EN 61800-5-1. The PELV galvanic isolation can be shown in Illustration 3.7.

To maintain PELV, all connections made to the control terminals must be PELV, for example, thermistor must be reinforced/double insulated.

1 Supply (SMPS) including signal isolation of UDC, indicating

the intermediate current voltage

2 Gate drive that runs the IGBTs (trigger transformers/opto-

couplers)

3 Current transducers

4 Internal soft-charge, RFI, and temperature measurement

circuits

5 Custom relays

a Control card terminals

Illustration 3.7 Galvanic Isolation

The functional galvanic isolation (see Illustration 3.6) is for the RS485 standard bus interface.

Product Overview

VLT® Micro Drive FC 51

CAUTION

INSTALLATION AT HIGH ALTITUDE

At altitudes above 2000 m (6500 ft), contact Danfoss regarding PELV.

3.4 Ground Leakage Current

WARNING

DISCHARGE TIME

Touching the electrical parts could be fatal - even after the equipment has been disconnected from mains. Also make sure that other voltage inputs have been disconnected, such as load sharing (linkage of DC intermediate circuit), and the motor connection for kinetic back-up. Before touching any electrical parts, wait at least the amount of time indicated in Table 2.1. Shorter time is allowed only if indicated on the nameplate for the specic unit.

WARNING

LEAKAGE CURRENT HAZARD

Leakage currents exceed 3.5 mA. Failure to ground the frequency converter properly can result in death or serious injury.

Ensure the correct grounding of the equipment

•

by a certied electrical installer.

WARNING

RESIDUAL CURRENT DEVICE PROTECTION

This product can cause a DC current in the protective conductor. Where a residual current device (RCD) is used for protection in case of direct or indirect contact, only an RCD of Type B is allowed on the supply side of this product. Otherwise, apply another protective measure, such as separation from the environment by double or reinforced insulation, or isolation from the supply system by a transformer. See also application note Protection against Electrical Hazards. Protective grounding of the frequency converter and the use of RCDs must always follow national and local regulations.

3.5 Extreme Running Conditions

Short circuit (motor phase-phase)

Current measurement in each of the 3 motor phases or in the DC-link, protects the frequency converter against short circuits. A short circuit between 2 output phases causes an overcurrent in the inverter. The inverter is turned o individually when the short circuit current exceeds the allowed value (Alarm 16 Trip Lock).

For information about protecting the frequency converter against a short circuit at the load sharing and brake outputs, see chapter 6.6 Fuses.

Switching on the output

Switching on the output between the motor and the frequency converter is fully permitted. The frequency converter is not damaged in any way by switching on the output. However, fault messages may appear.

Motor-generated overvoltage

The voltage in the DC link is increased when the motor acts as a generator. This occurs in following cases:

The load drives the motor (at constant output

•

frequency from the frequency converter), that is the load generates energy.

During deceleration (ramp-down) if the inertia

•

moment is high, the friction is low, and the rampdown time is too short for the energy to be dissipated as a loss in the frequency converter, the motor, and the installation.

Incorrect slip compensation setting

•

(parameter 1-62 Slip Compensation) may cause higher DC-link voltage.

The control unit may attempt to correct the ramp if parameter 2-17 Over-voltage Control is enabled. The frequency converter turns o to protect the transistors and the DC link capacitors when a certain voltage level is reached.

Mains drop-out

During a mains drop-out, the frequency converter keeps running until the DC-link voltage drops below the minimum stop level, which is typically 15% below the frequency converter's lowest rated supply voltage. The mains voltage before the drop-out and the motor load determines how long it takes for the frequency converter to coast.

3.5.1 Motor Thermal Protection

Motor thermal protection can be provided in 2 ways.

Using a motor thermistor, via 1 of the following:

Thermistor input on a standard AI.

•

VLT® Sensor Input MCB 114.

•

VLT® PTC Thermistor Card MCB 112.

•

The frequency converter monitors motor temperature as the speed and load vary to detect overheating conditions.

The other method calculates motor temperature by measuring current, frequency, and operating time. The frequency converter shows the thermal load on the motor in percentage and can issue a warning at a programmable

1.21.0 1.4

100

1.81.6 2.0

2000

500

200

400 300

1000

600

t [s]

175ZA052.12

OUT

= 2 x f

M,N

OUT

= 0.2 x f

M,N

OUT

= 1 x f

M,N

(par. 1-23)

IMN(par. 1-24)

Product Overview Design Guide

overload setpoint. Programmable options at the overload allow the frequency converter to stop the motor, reduce output, or ignore the condition. Even at low speeds, the frequency converter meets I2t Class 20 electronic motor overload standards. This method is called electronic thermal relay (ETR).

3 3

Illustration 3.8 ETR Characteristics

The X-axis shows the ratio between I

motor

and I

motor

nominal. The Y axis shows the time in s before the ETR cut of and trips the frequency converter. The curves show the characteristic nominal speed, at twice the nominal speed and at 0.2 x the nominal speed. At lower speed, the ETR cuts o at lower heat due to less cooling of the motor. In that way, the motor is protected from being overheated even at low speed. The ETR feature is calculating the motor temperature based on actual current and speed. The calculated temperature is visible as a readout parameter in parameter 16-18 Motor Thermal in the product-specic Programming Guide. A special version of the ETR is also available for EX-e motors in ATEX areas. This function makes it possible to enter a specic curve to protect the Ex-e motor. The Programming Guide takes the user through the set-up.

130BA526.10

Selection

4 Selection

4.1 Options and Accessories

VLT® Micro Drive FC 51

4.1.1 Local Control Panel (LCP)

For detailed information on programming, see VLT® Micro

Drive FC 51 Programming Guide.

NOTICE

The frequency converter can also be programmed from a PC via RS485 port by installing the MCT 10 Set-up Software. This software can either be ordered using code number 130B1000 or downloaded from the Danfoss website:

www.danfoss.com/BusinessAreas/DrivesSolutions/softwaredownload

Operation keys

A yellow indicator light above the operation keys indicates the active key. [Hand On]: Starts the motor and enables control of the frequency converter via the LCP. [O/Reset]: Stops the motor (o). If in alarm mode, the alarm is reset. [Auto On]: The frequency converter is controlled either via control terminals or serial communication. [Potentiometer] (LCP 12): The potentiometer works in 2 ways: In auto mode the potentiometer acts as an extra programmable analog input. In hand-on mode, the potentiometer controls local reference.

4.1.2 Remote Mounting Kit for LCP

The LCP can be moved to the front of a cabinet by using the remote built-in kit. The enclosure is IP55.

Enclosure IP55 front

Maximum cable length between LCP and

unit 3 m

Communication standard: RS485

Ordering number 132B0102

Illustration 4.1 Description of LCP Keys and Display

Press [Menu] to select one of the following menus:

Status

For readouts only.

Quick Menu

For access to Quick Menus 1 and 2.

Main Menu

For access to all parameters.

Navigation keys [Back]: For moving to the previous step or layer in the

navigation structure. [▲] [▼]: For maneuvering between parameter groups, parameters and within parameters. [OK]: For selecting a parameter and for accepting changes to parameter settings.

Table 4.1 Technical Data

4.1.3 FC 51 Remote Mounting Kit Mounting Instruction

Step 1

Fit the gasket on the LCP in the frequency converter.

Illustration 4.2 Fit Gasket on LCP

62.3±0.2

82.8±0.2

4xR 1.5±0.5

130BA568.10

130BA527.10

130BA523.10

130BA524.10

130BA525.10

Selection Design Guide

Step 2

Place the LCP on the panel - see dimensions of the hole in Illustration 4.3.

Illustration 4.3 Dimensions of Hole

4 4

Illustration 4.5 Place the Bracket on LCP

Illustration 4.4 Panel, Gasket, and LCP

Step 3

Place the bracket on the back of the LCP, then slide down. Tighten screws and connect the cable to the LCP.

NOTICE

Use the provided thread cutting screws to fasten the connector to the LCP. Tightening torque: 1.3 Nm (11.5 inlb).

Illustration 4.6 Tighten Screws and Connect Cable to LCP

Step 4

Connect the cable to the frequency converter.

NOTICE

Use the provided thread cutting screws to fasten connector to the frequency converter. Tightening torque:

1.3 Nm (11.5 in-lb).

Illustration 4.7 Connect Cable to the Frequency Converter

Selection

VLT® Micro Drive FC 51

4.1.4 IP21/TYPE 1 Enclosure Kit

Frame IP class Power [kW] Height [mm]AWidth [mm]BDepth [mm]COrdering

number

1x200–240 V 3x200–240 V 3x380–480 V

M1 IP21 0.18–0.75 0.25–0.75 0.37–0.75 219.3 73 155.9 132B0108

M2 IP21 1.5 1.5 1.5–2.2 245.6 78 175.4 132B0109

M3 IP21 2.2 2.2–3.7 3.0–7.5 297.5 95 201.4 132B0110

M4 IP21 – – 11–15 – – – –

M5 IP21 – – 18.5–22 – – – –

Table 4.2 IP21/TYPE 1 Enclosure Kit

4.1.5 Type 1 (NEMA)

Frame IP class Power [kW] Height [mm]AWidth [mm]BDepth [mm]COrdering

number

1x200–240 V 3x200–240 V 3x380–480 V

M1 IP20 0.18–0.75 0.25–0.75 0.37–0.75 194.3 70.0 155.9 132B0103

M2 IP20 1.5 1.5 1.5–2.2 220.6 75.0 175.4 132B0104

M3 IP20 2.2 2.2–3.7 3.0–7.5 282.5 90.0 201.3 132B0105

M4 IP20 – – 11–15 345.6 125.0 248.5 132B0120

M5 IP20 – – 18.5–22 385.5 165.0 248.2 132B0121

Table 4.3 Type 1 (NEMA)

4.1.6 Decoupling Plate

Frame IP class Power [kW] Height [mm]AWidth [mm]BDepth [mm]COrdering

1x200–240 V 3x200–240 V 3x380–480 V

M1 IP20 0.18–0.75 0.25–0.75 0.37–0.75 204.2 70.0 155.9 132B0106

M2 IP20 1.5 1.5 1.5–2.2 230.0 75.0 175.4 132B0106

M3 IP20 2.2 2.2–3.7 3.0–7.5 218.5 90.0 201.3 132B0107

M4 IP20 – – 11–15 347.5 125.0 248.5 132B0122

M5 IP20 – – 18.5–22 387.5 165.0 248.2 132B0122

Table 4.4 Decoupling Plate

number

Selection Design Guide

4.1.7 FC 51 Type 1 Kit Mounting Instruction for M1, M2 and M3

Step 1

Mount metal plate on frequency converter and tighten the screws. Tightening torque: 2 Nm (18 in-lb).

M1 4 x ½”

M2 5 x ½“

Table 4.5 Conduit Sizes

2 x ½”

3 x 3/4”

4.1.8 FC 51 Type 1 Kit Mounting Instruction for M4 and M5

Step 1

Mount metal plate on frequency converter and tighten the screws. Tightening torque: 2 Nm (18 in-lb).

M4 3x½”

M5 3x1“

Table 4.6 Conduit Sizes

4 4

Illustration 4.8 Mount Metal Plate on Frequency Converter

Step 2

Fit base cover on frequency converter and tighten screw.

Illustration 4.10 Mount Metal Plate on Frequency Converter

Step 2

Fit base cover on frequency converter and tighten screw.

Illustration 4.11 Fit Base Cover on Frequency Converter

Illustration 4.9 Fit Base Cover on Frequency Converter

130BC014.10

Selection

VLT® Micro Drive FC 51

4.1.9 FC 51 IP21 Kit Mounting Instruction

Step 1

Fit top cover on frequency converter.

Step 3

Mount metal plate on frequency converter and tighten screws. Tightening torque: 2 Nm (18 in-lb).

Illustration 4.12 Fit Top Cover on Frequency Converter

Step 2

Remove knockouts on metal plate and t rubber grommets.

Illustration 4.14 Mount Metal Plate on Frequency Converter

Step 4

Fit base cover on frequency converter and tighten screw.

Illustration 4.13 Remove Knockouts and Fit Rubber Grommets

NOTICE

IP21 is only achieved with LCP 11 or LCP 12 mounted.

Illustration 4.15 Fit Base Cover on Frequency Converter

Selection Design Guide

4.1.10 FC 51 Decoupling Plate Mounting Instruction for M1 and M2

Step 1

Mount metal plate on frequency converter and fasten with two screws. Tightening torque: 2 Nm (18 in-lb).

Illustration 4.16 Mount Metal Plate

Step 2

Mount bracket on decoupling plate.

Step 3

Decoupling plate mounted.

4 4

Illustration 4.18 Decoupling Plate Mounted

4.1.11 FC 51 Decoupling Plate Mounting Instruction for M3

Step 1

Mount decoupling plate on frequency converter and fasten with 2 screws. Tightening torque: 2 Nm (18 in-lb).

Illustration 4.19 Mount Decoupling Plate

Illustration 4.17 Mount Bracket

Illustration 4.20 Fasten with Screws

Selection

VLT® Micro Drive FC 51

Step 2

Decoupling plate mounted.

Step 2

Decoupling plate mounted.

Illustration 4.21 Decoupling Plate Mounted

4.1.12 FC 51 Decoupling Plate Mounting Instruction for M4 and M5

Step 1

Mount metal plate on frequency converter and fasten with 2 screws. Tightening torque: 2 Nm (18 in-lb).

Illustration 4.23 Decoupling Plate Mounted

Step 3

Mount bracket on decoupling plate.

Illustration 4.24 Mount Bracket

Illustration 4.22 Mount Metal Plate

130BC160.10

Selection Design Guide

4.1.13 FC 51 DIN Rail Kit Mounting Instruction

Step 1

Mount plastic part on frequency converter.

Illustration 4.25 Mount Plastic Part

Step 2

Fit frequency converter on DIN rail (DIN rail kit is only for M1 and M2).

4.1.14 Line Filter MCC 107 Installation Instructions

Line lters of the type MCC 107 combine a harmonic lter and an EMC lter. The line lters improve performance of the line current to the frequency converter. The 3 dierent

line lter enclosure sizes correspond to the VLT® Micro Drive enclosure types M1, M2 and M3.

4 4

1 Mounting holes for frequency converter

2 Input terminal

3 Output line

4 Protective earth (PE)

Illustration 4.27 Line Filter MCC 107 with VLT® Micro Drive FC

CAUTION

HOT SURFACES

The surface of the line lter can get hot during operation.

Do not touch the line lter during operation or

•

wear protective gloves.

WARNING

HIGH VOLTAGE

Illustration 4.26 Fit Frequency Converter on DIN Rail

injury.

Only qualied personnel must perform instal-

•

lation, start-up, and maintenance.

NOTICE

Always replace defective lters, never repair them.

130BC159.10

M 3~

MCC 107 FC 51

130BC161.10

M 3~

MCC 107 FC 51

130BC162.10

Selection

VLT® Micro Drive FC 51

4.1.15 Mounting

There are 2 options for mounting the line lter correctly:

Front mounting

Mount the lter in a vertical position with the

•

terminals at the bottom.

Mount the frequency converter on the front of

•

the line lter using 3 M4 bolts.

4.1.16 Wiring

WARNING

LEAKAGE CURRENT HAZARD

Leakage currents exceed 3.5 mA. Failure to ground the line lter properly can result in death or serious injury.

Ensure the correct grounding of the equipment

•

by a certied electrical installer.

1. Connect line lter to protective earth (PE). Use a cabinet mounting panel or similar to achieve optimum grounding conditions.

2. Connect input terminal to mains power (cable not supplied).

3. Connect output cable to the input terminals of the frequency converter.

4. Ensure solid electrical contact between line lter and frequency converter (high frequency grounding).

Illustration 4.28 Line Filter with Frequency Converter

Ensure metal-to-metal contact between lter and

•

frequency converter.

NOTICE

Metal-to-metal contact improves EMC performance and enables the base plate of the frequency converter to function as heat sink for the line lter.

Side mounting

Mount the lter side-by-side with the frequency

•

converter. There is no requirement for spacing between lter and frequency converter.

Mount the back of the line lter to a cooling

•

surface, such as a metal wall. Alternatively, derate the line lter by 1 size: For example, use a

0.75 kW (1 hp) line lter with a 0.37 kW (0.5 hp) frequency converter.

CAUTION

HIGH TEMPERATURES

Risk of re or device damage.

Do not mount the line lter close to heat-

•

sensitive material (such as wood).

Illustration 4.29 Line 1

Illustration 4.30 Line 2

100

+10

300

+20

LOAD

LINE

5.5

7.8

Ø11

Ø5.5

M4(3x)

130BC163.10

Selection Design Guide

NOTICE

Reduce common mode interferences by

•

establishing a low impedance current path to the frequency converter.

To ensure optimum EMC performance, use a

•

decoupling plate kit (ordering numbers 132B0106 or 132B0107)

4.1.17 Dimensions

For voltage rating, wire size, and fuse selection, see the

VLT® Micro Drive FC 51 Quick Guide.

4 4

Frame M1 M2 M3

w [mm] 70 75 90

d [mm] 55 65 69

h [mm] 190 210 300

h3 [mm] 230 250 340

w1 [mm] 40 40 55.6

h1 [mm] 213 233 323

w2 [mm] 55 59 69

h2 [mm] 140 166.5 226

l1 [mm] 45 38.5 68

l2 [mm] 7.6 8 9.3

PE (metric) M6 M6 M6

Weight [kg] 2 3 5

Illustration 4.31 Dimensions

M1 200 V

fsw[kHz]20 64 108 1412

10 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

110

Iout [%]

40 ℃

45 ℃

50 ℃

130BC028.10

M1 400 V

fsw[kHz]20 64 108 1412

10 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

110

Iout [%]

40 ℃

45 ℃

50 ℃

130BC029.10

M2 200 V

fsw[kHz]20 64 108 1412

10 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

110

Iout [%]

40 ℃

45 ℃

50 ℃

130BC030.10

M2 400 V

fsw[kHz]20 64 108 1412

10 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

110

Iout [%]

40 ℃

45 ℃ 50 ℃

130BC031.10

M3 200 V

fsw[kHz]20 64 108 1412

10 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

110

Iout [%]

40 ℃

45 ℃

50 ℃

130BC032.10

Selection

VLT® Micro Drive FC 51

4.2 Special Conditions

4.2.1 Purpose of Derating

Consider the purpose of derating when using the frequency converter at low air pressure (heights), at low speeds, with long motor cables, cables with a large crosssection, or at high ambient temperature. The required action is described in this section.

4.2.2 Derating for Ambient Temperature

Derating for ambient temperature and IGBT switching.

Illustration 4.34 M2 200 V

The ambient temperature measured over 24 hours should be at least 5 °C lower than the maximum ambient temperature. If the frequency converter is operated at high ambient temperature, decrease the constant output current. The frequency converter has been designed for operation at maximum 50 °C ambient temperature with 1 motor size smaller than nominal. Continuous operation at full load at 50 °C ambient temperature reduces the lifetime of the frequency converter.

Illustration 4.35 M2 400 V

Illustration 4.32 M1 200 V

Illustration 4.36 M3 200 V

Illustration 4.33 M1 400 V

M3 400 V

fsw[kHz]20 64 108 1412

10 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

110

Iout [%]

40 ℃

45 ℃

50 ℃

130BC033.10

M4 400 V

fsw[kHz]20 64 108 1412

10 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

110

Iout [%]

40 ℃

45 ℃ 50 ℃

130BC034.10

M5 400 V

fsw[kHz]20 64 108 1412

10 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

110

Iout [%]

40 ℃

45 ℃ 50 ℃

130BC035.10

Selection Design Guide

Illustration 4.37 M3 400 V

4.2.3 Derating for Low Air Pressure

The cooling capability of air is decreased at low air pressure.

CAUTION

INSTALLATION AT HIGH ALTITUDE

For altitudes above 2000 m (6560 ft), contact Danfoss regarding PELV.

Below 1000 m (3280 ft) altitude, no derating is necessary, but above 1000 m (3280 ft), decrease the ambient temperature or the maximum output current. Decrease the output by 1% per 100 m (328 ft) altitude above 1000 m (3280 ft), or reduce the maximum ambient temperature by 1 °C per 200 m (656 ft).

4.2.4 Automatic Adaptations to Ensure Performance

4 4

The frequency converter constantly checks for critical levels of:

Internal temperature.

•

Load current.

•

High voltage on the DC link.

•

Low motor speeds.

Illustration 4.38 M4 200 V

•

As a response to a critical level, the frequency converter can adjust the switching frequency and/or change the switching pattern to ensure the performance of the frequency converter. The capability for automatic output current reduction extends the acceptable operating conditions even further.

4.2.5 Derating for Running at Low Speed

When a motor is connected to a frequency converter, it is necessary to check that the cooling of the motor is adequate. The level of heating depends on the load on the motor, as well as the operating speed and time.

Constant torque applications (CT mode)

Illustration 4.39 M4 400 V

A problem may occur at low RPM values in constant torque applications. In a constant torque application, a motor may overheat at low speeds due to less cooling air from the motor integral fan.

Therefore, if the motor runs continuously at an RPM value lower than half of the rated value, supply the motor with extra air-cooling (or use a motor designed for this type of operation).

An alternative is to reduce the load level of the motor by using a larger motor. However, the design of the frequency converter puts a limit to the motor size.

How to Order

5 How to Order

VLT® Micro Drive FC 51

5.1 Drive Congurator

It is possible to design a frequency converter according to the application requirements by using the ordering number system.

To order standard frequency converters and frequency converters with integral options, send a type code string

describing the product to the Danfoss sales example type code:

FC051PXXXXXXXXHXXXXXXXSXXX

Use the web-based Drive right frequency converter for the right application and generate the type code string. The Drive Congurator automatically generates an 8-digit sales number (either for 1 product or a project list with several products) to be delivered to your local sales oce.

Fine the Drive Congurator at: www.vlt-drives.danfoss.com/ support/drive-congurator/.

Congurator to congure the

oce. An

FC Identication

5.2

The nameplate sticker is located on the top of each frequency converter and shows the ratings, serial number, warnings catalog number, and other relevant data for each unit. See Table 5.2 for details, how to read the type code string.

Illustration 5.1 Nameplate Sticker

How to Order Design Guide

5.3 Type Code

Table 5.1 Type Code

Description Pos. Possible option

Product group 1–3 Adjustable frequency converters

Series and product type 4–6 Micro Drive

Power size 7–10 0.18–22 kW (0.24–30 hp)

11–12 S2: Single-phase 200-240 V AC

Mains voltage

Enclosure 13–15 IP20/Chassis

RFI lter 16–17 H3: RFI lter A1/B (reduced cable length)

Brake

Display

Coating PCB

Mains option 21 X: No mains option

Adaptation A 22 X: No adaptation

Adaptation B 23 X: No adaptation

Software release 24–27 SXXX: Latest release - std. software

18 B: Brake chopper included (from 1.5 kW (2 hp) and up)

19 X: No local control panel

20 C: Coated PCB

T2: 3-phase 200–240 V AC

T4: 3-phase 380–480 V AC

X: No brake chopper included

N: Numerical local control panel (LCP)

P: Numerical local control panel (LCP) with potentiometer

X: No coated PCB

5 5

Table 5.2 Type Code Description

How to Order

VLT® Micro Drive FC 51

5.4 Ordering Numbers

200–240 V 380–480 V

Power [kW ] Current [l

0.18 1.2 132F0001

0.25 1.5 132F0008

0.37 2.2 132F0002 132F0009 1.2 132F0017

0.75 4.2 132F0003 132F0010 2.2 132F0018

1.5 6.8 132F0005 132F0012 3.7 132F0020

2.2 9.6 132F0007 132F0014 5.3 132F0022

3.0 7.2 132F0024

Table 5.3 Ordering Numbers

3.7 15.2 132F0016

4.0

5.5 12.0 132F0028

7.5 15.5 132F0030

11.0 23.0 132F0058

15.0 31.0 132F0059

18.5 37.0 132F0060

22.0 43.0 132F0061

Frequency converters from 1.5 kW (2 hp) and up have built-in

] Single-phase 3-phase Current [l

nom

brake chopper.

] 3 ph.

nom

9.0 132F0026

5.5 Options

Ordering number Description

132B0100

132B0101

132B0102 Remote mounting kit for LCP incl. 3 m cable IP55 with LCP 11, IP21 with LCP 12

132B0103 Nema type 1 kit for M1 enclosure

132B0104 Type 1 kit for M2 enclosure

132B0105 Type 1 kit for M3 enclosure

132B0106 Decoupling plate kit for M1 and M2 enclosures

132B0107 Decoupling plate kit for M3 enclosure

132B0108 IP21 for M1 enclosure

132B0109 IP21 for M2 enclosure

132B0110 IP21 for M3 enclosure

132B0111 DIN rail mounting kit for M1 and M2 enclosure

132B0120 Type 1 kit for M4 enclosure

132B0121 Type 1 kit for M5 enclosure

132B0122 Decoupling plate kit for M4 and M5 enclosures

130B2522 Line Filter MCC 107 for 132F0001

130B2522 Line Filter MCC 107 for 132F0002

130B2533 Line Filter MCC 107 for 132F0003

130B2525 Line Filter MCC 107 for 132F0005

130B2530 Line Filter MCC 107 for 132F0007

130B2523 Line Filter MCC 107 for 132F0008

130B2523 Line Filter MCC 107 for 132F0009

130B2523 Line Filter MCC 107 for 132F0010

130B2526 Line Filter MCC 107 for 132F0012

130B2531 Line Filter MCC 107 for 132F0014

130B2527 Line Filter MCC 107 for 132F0016

130B2523 Line Filter MCC 107 for 132F0017

130B2523 Line Filter MCC 107 for 132F0018

130B2524 Line Filter MCC 107 for 132F0020

VLT® Control Panel LCP 11 w/o potentiometer

VLT® Control Panel LCP 12 with potentiometer

How to Order Design Guide

Ordering number Description

130B2526 Line Filter MCC 107 for 132F0022

130B2529 Line Filter MCC 107 for 132F0024

130B2531 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 FC 51

NOTICE

Danfoss line lters and brake resistors are available upon request.

5 5

How to Install

6 How to Install

VLT® Micro Drive FC 51

6.1 Before Starting

6.1.1 Checklist

When unpacking the frequency converter, make sure that the unit is undamaged and complete. Check that the packaging contains the following:

VLT® Micro Drive FC 51

•

Quick Guide

•

Optional: LCP and/or decoupling plate.

Side-by-Side Installation

6.2

The frequency converter can be mounted side-by-side for IP20 rating units and requires 100 mm (3.94 in) clearance above and below for cooling. Regarding surroundings in general, see chapter 9 Specications.

Illustration 6.2 Side-by-side Installation

Illustration 6.1 Content of Box

Mechanical Dimensions

6.4

A template for drilling is on the ap of the packaging.

6.3 Before Commencing Repair Work

1. Disconnect the FC 51 from mains (and external DC supply, if present).

2. Wait for 4 minutes (M1, M2, and M3) and 15 minutes (M4 and M5) for discharge of the DC-link. See Table 2.1.

3. Disconnect the DC bus terminals and the brake terminals (if present).

4. Remove the motor cable.

a A

C C C

B b

Ø 7mm

Ø 7mm Ø 5.5mm Ø 4.5mm

130BB321.11

Ø 4.5mm

How to Install Design Guide

Power [kW ] Height [mm] Width [mm]

Enclos

1X200–240 V 3X200–240 V 3X380–480 V A

ure

M1 0.18–0.75 0.25–0.75 0.37–0.75 150 205 140.4 70 55 148 1.1

M2 1.5 1.5 1.5–2.2 176 230 166.4 75 59 168 1.6

M3 2.2 2.2–3.7 3.0–7.5 239 294 226 90 69 194 3.0

M4 – – 11.0–15.0 292 347.5 272.4 125 97 241 6.0

M5 – – 18.5–22.0 335 387.5 315 165 140 248 9.5

1) For LCP with potentiometer, add 7.6 mm (0.3 in).

Illustration 6.3 Mechanical Dimensions

Electrical Installation in General

6.5

A (including

decoupling plate)

a B b C [kg]

Depth1) [mm]

Maximum

weight

NOTICE

All cabling must comply with national and local regulations on cable cross-sections and ambient temperature. Copper conductors required, (60–75 °C) recommended.

Power [kW ] Torque [Nm]

Enclosure 1x200–240 V 3x200–240 V 3x380–480 V Line Motor DC connection/brake Control terminals Ground Relay

M1 0.18–0.75 0.25–0.75 0.37–0.75 0.8 0.7

M2 1.5 1.5 1.5–2.2 0.8 0.7

M3 2.2 2.2–3.7 3.0–7.5 0.8 0.7

M4 – – 11.0–15.0 1.3 1.3 1.3 0.15 3 0.5

M5 – – 18.5–22.0 1.3 1.3 1.3 0.15 3 0.5

1) Spade connectors (6.3 mm (0.25 in) Faston plugs)

Table 6.1 Tightening of Terminals

Spade

0.15 3 0.5

How to Install

VLT® Micro Drive FC 51

6.6 Fuses

Overcurrent protection

To avoid overheating of the cables in the installation,

Branch circuit protection

To protect the installation against electrical and re hazards, protect all branch circuits in an installation, switch gear, machines, and so on, against short circuits and overcurrent according to national/international regulations.

Short-circuit protection

Use the fuses mentioned in Table 6.2 to protect service personnel or other equipment if there is an internal failure in the unit or short circuit on DC-link. If there is a short circuit on the motor or brake output, the frequency converter provides full short-circuit protection.

Maximum fuses UL

FC 51

Bussmann Bussmann Bussmann Littelfuse

1x200–240 V

kW Type RK1 Type J Type T Type RK1 Type CC Type RK1 Type gG

0K18-0K37 KTN-R15 JKS-15 JJN-15 KLN-R15 ATM-R15 A2K-15R 16A

0K75 KTN-R25 JKS-25 JJN-25 KLN-R25 ATM-R25 A2K-25R 25A

1K5 KTN-R35 JKS-35 JJN-35 KLN-R35 – A2K-35R 35A

2K2 KTN-R50 JKS-50 JJN-50 KLN-R50 – A2K-50R 50A

3x200–240 V

0K25 KTN-R10 JKS-10 JJN-10 KLN-R10 ATM-R10 A2K-10R 10A

0K37 KTN-R15 JKS-15 JJN-15 KLN-R15 ATM-R15 A2K-15R 16A

0K75 KTN-R20 JKS-20 JJN-20 KLN-R20 ATM-R20 A2K-20R 20A

1K5 KTN-R25 JKS-25 JJN-25 KLN-R25 ATM-R25 A2K-25R 25A

2K2 KTN-R40 JKS-40 JJN-40 KLN-R40 ATM-R40 A2K-40R 40A

3K7 KTN-R40 JKS-40 JJN-40 KLN-R40 – A2K-40R 40A

3x380–480 V

0K37-0K75 KTS-R10 JKS-10 JJS-10 KLS-R10 ATM-R10 A6K-10R 10A

1K5 KTS-R15 JKS-15 JJS-15 KLS-R15 ATM-R15 A2K-15R 16A

2K2 KTS-R20 JKS-20 JJS-20 KLS-R20 ATM-R20 A6K-20R 20A

3K0 KTS-R40 JKS-40 JJS-40 KLS-R40 ATM-R40 A6K-40R 40A

4K0 KTS-R40 JKS-40 JJS-40 KLS-R40 ATM-R40 A6K-40R 40A

5K5 KTS-R40 JKS-40 JJS-40 KLS-R40 – A6K-40R 40A

7K5 KTS-R40 JKS-40 JJS-40 KLS-R40 – A6K-40R 40A

11K0 KTS-R60 JKS-60 JJS-60 KLS-R60 – A6K-60R 63A

15K0 KTS-R60 JKS-60 JJS-60 KLS-R60 – A6K-60R 63A

18K5 KTS-R60 JKS-60 JJS-60 KLS-R60 – A6K-60R 80A

22K0 KTS-R60 JKS-60 JJS-60 KLS-R60 – A6K-60R 80A

provide overload protection. Always carry out overcurrent protection according to national regulations. Fuses must be designed for protection in a circuit capable of supplying a maximum of 100000 A

(symmetrical), 480 V maximum.

rms

Non-UL compliance

If UL/cUL is not to be complied with, use the fuses mentioned in Table 6.2, which ensure compliance with EN50178/IEC61800-5-1: If there is a malfunction, not following the fuse recommendation may result in damage to the frequency converter and the installation.

Maximum fuses

non–UL

Ferraz

Shawmut

Ferraz Shawmut

Table 6.2 Fuses

How to Install Design Guide

6.7 Mains Connection

Step 1: Mount ground cable.

Step 2: Mount wires in terminals L1/L, L2, and L3/N and tighten.

Illustration 6.4 Mounting of Ground Cable and Mains Wires

For 3-phase connection, connect wires to all 3 terminals. For single-phase connection, connect wires to terminals L1/L and L3/N.

All types of 3-phased asynchronous standard motors can be connected to the frequency converter. Normally, small motors are star-connected (230/400 V, Δ/Y). Large motors are delta-connected (400/690 V, Δ/Y). Refer to the motor nameplate for correct connection and voltage.

Illustration 6.6 Star and Delta Connections

Step 1: Mount the ground cable.

Step 2: Connect wires to terminals either in star or delta connection. See the motor nameplate for further information.

Illustration 6.5 3-phase and Single-phase Wire Connections

6.8 Motor Connection

6.8.1 How to Connect the Motor

See chapter 9 Specications for correct dimensioning of motor cable cross-section and length.

Use a shielded/armored motor cable to comply

•

with EMC emission this cable to both the decoupling plate and the motor metal.

Keep the motor cable as short as possible to

•

reduce the noise level and leakage currents.

For further details on mounting of the decoupling plate,

see VLT® Micro Drive FC 51 Decoupling Plate Mounting Instruction for M1 and M2.

specications, and connect

Illustration 6.7 Mounting of Ground Cable and Motor Wires

For EMC-correct installation, use optional decoupling plate, see chapter 5.5 Options.

Illustration 6.8 Frequency Converter with Decoupling Plate

How to Install

VLT® Micro Drive FC 51

6.8.2 Motor Cables

See chapter 9 Specications for maximum dimensioning of motor cable cross-section and length.

Use a shielded/armored motor cable to comply

•

with EMC emission specications.

Keep the motor cable as short as possible to

•

reduce the noise level and leakage currents.

Connect the motor cable shield to both the

•

decoupling plate of the frequency converter and to the metal cabinet of the motor.

Make the shield connections with the largest

•

possible surface area (cable clamp). This is done by using the supplied installation devices in the frequency converter.

Avoid mounting with twisted shield ends

•

(pigtails), which spoils high frequency shielding

eects.

If it is necessary to split the shield to install a

•

motor isolator or motor relay, the shield must be continued with the lowest possible HF impedance.

6.8.3 Electrical Installation of Motor Cables

Shielding of cables

Avoid installation with twisted shield ends (pigtails). They spoil the shielding eect at higher frequencies. If it is necessary to break the shield to install a motor isolator or motor contactor, the shield must be continued at the lowest possible HF impedance.

Cable length and cross-section

The frequency converter has been tested with a given length of cable and a given cross-section of that cable. If the cross-section is increased, the cable capacitance, and thus the leakage current, may increase, and the cable length must be reduced correspondingly.

Switching frequency

When frequency converters are used together with sinewave lters to reduce the acoustic noise from a motor, the switching frequency must be set according to the sinewave lter instruction in parameter 14-01 Switching Frequency.

Aluminum conductors

Aluminum conductors are not recommended. When using aluminum conductors, ensure that the conductor surface is clean and the oxidation is removed and sealed by a neutral acid-free grease before connecting the conductor. Retighten the terminal screw after 2 days due to the softness of aluminum. It is crucial to keep the connection a gas-tight joint, otherwise the aluminum surface oxidizes again.

6.8.4 EMC-correct Electrical Installation

General points to be observed to ensure EMC-correct electrical installation.

Use only shielded/armored motor cables and

•

shielded/armored control cables.

Connect the shield to ground at both ends.

•

Avoid installation with twisted shield ends

•

(pigtails), since this ruins the shielding high frequencies. Use the cable clamps provided instead.

It is important to ensure good electrical contact

•

from the installation plate through the installation screws to the metal cabinet of the frequency converter.

Use star washers and galvanically conductive

•

installation plates.

Do not use unshielded/unarmored motor cables

•

in the installation cabinets.

eect at

Min. 16 mm

Equalizing cable

Control cables

All cable entries in

one side of panel

Earthing rail

Cable insulation stripped

Output contactor etc.

Motor cable

Motor, 3 phases and

PLC etc.

Panel

Mains-supply

Min. 200mm between control cable, mains cable and between mains motor cable

PLC

Protective earth

Reinforced protective earth

130BB965.10

How to Install Design Guide

Illustration 6.9 EMC-correct Electrical Installation

NOTICE

For North America use metal conduits instead of shielded cables.

175ZA166.13

0,01 0,1 1 10 100 MHz

10

10

10

10

10

10

10

10

The lower the Z the better the cable screening performance

Transfer impedance, Z

mOhm/m

How to Install

6.9 Use of EMC-Correct Cables

Danfoss recommends braided shielded/armored cables to optimize EMC immunity of the control cables and the EMC emission from the motor cables.

The ability of a cable to reduce the ingoing and outgoing radiation of electric noise depends on the transfer impedance (ZT). The shield of a cable is normally designed to reduce the transfer of electric noise; however, a shield with a lower transfer impedance (ZT) value is more eective than a shield with a higher transfer impedance (ZT).

Transfer impedance (ZT) is rarely stated by cable manufac-

turers, but it is often possible to estimate transfer impedance (ZT) by assessing the physical design of the cable.

Transfer impedance (ZT) can be assessed based on the following factors:

VLT® Micro Drive FC 51

The conductibility of the shield material.

•

The contact resistance between the individual

•

shield conductors.

The shield coverage, that is, the physical area of

•

the cable covered by the shield - often stated as a percentage value.

Shield type, that is, braided or twisted pattern.

•

- Aluminum-clad with copper wire.

- Twisted copper wire or armored steel

wire cable.

- Single-layer braided copper wire with varying percentage shield coverage. This is the typical Danfoss reference cable.

- Double-layer braided copper wire.

- Twin layer of braided copper wire with a

magnetic, shielded/armored intermediate layer.

- Cable that runs in copper tube or steel tube.

- Lead cable with 1.1 mm (0.04 in) wall thickness.

Illustration 6.10 Transfer Impedance of Dierent Wires

130BA051.11

PE PE

100nF

PE PE

PLC etc.

Equalizing cable

Min. 16mm

How to Install Design Guide

6.10 Grounding of Shielded/Armored Control Cables

Braid and shield/armor the control cables. Connect the shield to the metal cabinet of the unit with a cable clamp at both ends. Illustration 6.11 shows correct grounding examples.

a. Correct grounding

Control cables and cables for serial communication are tted with cable clamps at both ends to ensure the best possible electrical contact.

b. Incorrect grounding

Do not use twisted cable ends (pigtails). They increase the shield impedance at high frequencies.

c. Protection from potential between PLC and

frequency converter

If the ground potential between the frequency converter and the PLC is dierent, electric noise that disturbs the entire system is possible. Fit an equalizing cable, next to the control cable. Minimum cable cross-section: 16 mm2 (4 AWG).

d. For 50/60 Hz ground loops

Long control cables sometimes causes 50/60 Hz ground loops. Connect 1 end of the shield to ground via a 100 nF capacitor (keeping leads short).

e. Cables for serial communication

Eliminate low-frequency noise currents between 2 frequency converters by connecting 1 end of the shield to terminal 61. This terminal is connected to ground via an internal RC link. Use twisted-pair cables to reduce the dierential mode interference between the conductors.

a Correct grounding

b Incorrect grounding

c Protection from potential between PLC and frequency

converter

d 50/60 Hz ground loops

e Cables for serial communication

Residual Current Device

6.11

If local safety regulations are complied with, use RCD relays, multiple protective grounding, or grounding as extra protection. If an ground fault appears, a DC content may develop in the faulty current. If RCD relays are used, observe local regulations. Relays must be suitable for protection of 3-phase equipment with a bridge rectier and for a brief discharge on power-up, see chapter 3.4 Ground Leakage Current for further information.

Illustration 6.11 Grounding Examples

How to Install

6.12 Electrical Overview

6.12.1 Power Circuit - Overview

VLT® Micro Drive FC 51

Illustration 6.12 Diagram Showing all Electrical Terminals

* Brakes (BR+ and BR-) are not applicable for enclosure size M1.

For information about brake resistors, see VLT® Brake Resistor MCE 101 Design Guide. Improved power factor and EMC performance can be achieved by installing optional Danfoss line lters.

Danfoss power lters can also be used for load sharing. For more information about load sharing, see VLT® FC 51 Micro Drive Load Sharing application note.

How to Install Design Guide

6.13 Electrical Installation and Control Cables

Terminal number Terminal description Parameter number Factory default

1+2+3 Relay1 5-40 No operation

12 DC 24 V supply – +24 V DC

18 Digital input 5-10 Start

19 Digital input 5-11 Reversing

20 Common digital ground – Common

27 Digital input 5-12 Reset

29 Digital input 5-13 Jog

33 Digital input 5-15 Preset ref bit 0

42 Analog output/digital output 6-9* No operation

50 Supply for analog input – +10 V DC

53 Analog input (voltage or current) 3-15/6-1* Reference

55 Common analog ground – Common

60 Current input 3-16/6-2* Reference

Table 6.3 Terminal Connections

Long control cables and analog signals may, in rare cases and depending on installation, result in 50/60 Hz ground loops due to noise from mains supply cables.

If this occurs, break the shield or insert a 100 nF capacitor between shield and chassis.

NOTICE

To separate common terminals 20, 39, and 55, connect the common of digital/analog inputs and outputs. This avoids ground current interference among groups. For example, it avoids switching on digital inputs disturbing analog inputs.

NOTICE

Control cables must be shielded/armored.

6.14 Control Terminals

6.14.1 Access to Control Terminals

All control cable terminals are located underneath the terminal cover in front of the frequency converter. Remove the terminal cover using a screwdriver.

Illustration 6.13 Removing Terminal Cover

NOTICE

See back of terminal cover for outlines of control terminals and switches.

How to Install

VLT® Micro Drive FC 51

6.14.2 Connecting to Control Terminals

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.

Illustration 6.14 Overview of Control Terminals in PNP-congu-

ration and Factory Setting

6.15 Switches

NOTICE

Do not operate switches with power on the frequency converter.

S200 Switches 1-4

Switch 1

Switch 2

Switch 3 No function

Switch 4

*=default setting

Illustration 6.16 S200 Switches 1–4

*O=PNP terminals 29

On=NPN terminals 29

*O=PNP terminal 18, 19, 27, and 33

On=NPN terminal 18, 19, 27, and 33

*O=Terminal 53 0–10 V

On=Terminal 53 0/4–20 mA

NOTICE

Set parameter 6-19 Terminal 53 Mode according to switch 4 position.

Bus termination

Switch BUS TER position ON terminates the RS485 port, terminals 68, 69. See Illustration 6.15.

Default setting = O

Illustration 6.15 S640 Bus Termination

6.16 Final Set-Up and Test

To test the set-up and ensure that the frequency converter is running, follow these steps.

Step 1. Locate the motor nameplate

The motor is either star- (Y) or delta-connected (Δ). This information is on the motor nameplate data.

Step 2. Enter the motor nameplate data in this parameter list

To access this list, press the [Quick Menu] key and select Q2 Quick Setup.

Motor Power [kW ]

or Motor Power [HP]

1 Motor Voltage Parameter 1-22 Motor

2 Motor Frequency Parameter 1-23 Motor

3 Motor Current Parameter 1-24 Motor

Motor Nominal Speed

Parameter 1-20 Motor

Power [kW]

Parameter 1-21 Motor

Power [HP]

Voltage

Frequency

Current

Parameter 1-25 Motor

Nominal Speed

Table 6.4 Parameters for Quick Set-up

3~ MOTOR NR. 1827421 2003

S/E005A9

1,5 KW

n 31,5 /min. 400 Y V

n 1400 /min. 50 Hz

COS  0,80 3,6 A

1,7L

B IP 65 H1/1A

BAUER D-7 3734 ESLINGEN

130BT307.10

How to Install Design Guide

Successful AMT

1. The display shows Press [OK] to nish AMT.

2. Press [OK] to exit the AMT state.

Unsuccessful AMT

1. The frequency converter enters into alarm mode. A description of the alarm can be found in the

Troubleshooting section in VLT® Micro Drive FC 51 Programming Guide.

2. Report value in the [Alarm Log] shows the last measuring sequence carried out by the AMT, before the frequency converter entered alarm mode. This number along with the description of the alarm helps with troubleshooting. Contact Danfoss Service and make sure to mention number and alarm description.

Unsuccessful AMT is often caused by incorrectly registered motor nameplate data or too big dierence between the motor power size and the frequency converter power size.

Step 4. Set speed limit and ramp time

Set up the limits for speed and ramp time.

Illustration 6.17 Motor Nameplate Example

Step 3. Activate the automatic motor tuning (AMT)

Performing an AMT ensures optimum performance. The AMT measures the values from the motor model equivalent diagram.

1. Connect terminal 27 to terminal 12 or set

parameter 5-12 Terminal 27 Digital Input to [0] No function.

2. Activate the AMT 1-29 Automatic Motor Tuning (AMT).

3. Select between complete or reduced AMT. If an LC lter is mounted, run only the reduced AMT, or remove the LC lter during the AMT procedure.

4. Press [OK]. The display shows Press [Hand On] to

Stop the AMT during operation

start.

5. Press [Hand On]. A progress bar indicates if the AMT is in progress.

1. Press [O] - the frequency converter enters into alarm mode and the display shows that the user terminated the AMT.

Minimum reference Parameter 3-02 Minimum

Reference

Maximum reference Parameter 3-03 Maximum

Reference

Table 6.5 Reference Limit Parameters

Parameter 4-11 Motor Speed Low

Motor speed low limit

Motor speed high limit

Table 6.6 Speed Limit Parameters

Ramp-up time 1 [s] Parameter 3-41 Ramp 1 Ramp

Ramp-down time 1 [s] Parameter 3-42 Ramp 1 Ramp

Table 6.7 Ramp Time Parameters

Limit [RPM] or

Parameter 4-12 Motor Speed Low

Limit [Hz]

Parameter 4-13 Motor Speed

High Limit [RPM] or

Parameter 4-14 Motor Speed

High Limit [Hz]

Up Time

Down Time

LC ﬁlter

130BC013.10

How to Install

VLT® Micro Drive FC 51

6.17 Parallel Connection of Motors

The frequency converter can control several motors connected in parallel. When using a parallel motor connection, consider the following points:

When motors are connected in parallel, parameter

•

1-29 Automatic Motor Tuning (AMT) cannot be used.

Run applications with motors connected in

•

parallel in U/F mode (volts per hertz).

The usage of VVC+ mode is limited to certain

•

applications when the motors connected in parallel are of the same type and size.

Total current consumption of motors must not

•

exceed the rated output current I frequency converter.

Signicant dierence in motor sizes may cause

•

problems at start and at low RPM. The relatively high ohmic resistance in the stator of a small motor demands higher voltage at start and at low RPM.

Do not use the electronic thermal relay (ETR) of

•

the frequency converter as motor protection. To provide extra motor protection, include thermistors in each motor winding or individual thermal relays.

During the installation of a parallel motor application, consider the following points:

Connection A/B is only possible when the total

•

motor cable is shorter than 50 m (164 ft).

In connection C/D the total motor cable length

•

specied in general specications is valid as long as the parallel cables are less than 10 m (32.8 ft).

INV

of the

Illustration 6.18 Parallel Connection of Motors

130BC011.10

68 69 68 69 68 69

RS 485

RS 232 USB

How to Install Design Guide

6.18 Motor Installation

6.18.1 Motor Insulation

For motor cable lengths ≤ the maximum cable length listed in chapter 9.1 insulation ratings are recommended, because the peak voltage can be up to twice the DC-link voltage, 2.8 times the mains voltage, due to transmission line eects in the motor cable. If a motor has lower insulation rating, use a dU/dt or sine-wave lter.

Nominal Mains Voltage Motor Insulation

UN ≤420 V

420 V<UN≤500 V Reinforced ULL=1600 V

500 V<UN≤600 V Reinforced ULL=1800 V

600 V<UN≤690 V Reinforced ULL=2000 V

Table 6.8 Motor Insulation Ratings

Specications, the following motor

Standard ULL=1300 V

6.19 Installation of Misc. Connections

6.19.1 RS485 Bus Connection

1 or more frequency converters can be connected to a control (or master) using the RS485 interface. Terminal 68 is connected to the P signal (TX+, RX+), while terminal 69 is connected to the N signal (TX-, RX-).

If more than 1 frequency converter is connected to a master, use parallel connections.

6.19.2 How to Connect a PC to the Frequency Converter

To control or program the frequency converter from a PC, install the PC-based conguration tool MCT 10 Set-up Software.

MCT 10 Set-up Software

MCT 10 Set-up Software has been designed as an easy-touse interactive tool for setting parameters in our frequency converters.

The PC-based conguration tool MCT 10 Set-up Software is useful for:

Planning a communication network o-line. MCT

•

10 Set-up Software contains a complete frequency converter database.

Commissioning frequency converters online.

•

Saving settings for all frequency converters.

•

Replacing a frequency converter in a network.

•

Expanding an existing network.

•

Save frequency converter settings

1. Connect a PC to the unit via USB port.

2. Open the MCT 10 Set-up Software.

3. Select Read from drive.

4. Select Save as.

All parameters are now stored in the PC.

Save frequency converter settings

1. Connect a PC to the unit via USB port.

2. Open the MCT 10 Set-up Software.

3. Select Open, the software shows the stored les.

4. Open the appropriate le.

5. Select Write to drive.

All parameter settings are now transferred to the frequency converter.

Illustration 6.19 RS485 Bus Connection

To avoid potential equalizing currents in the shield, ground the cable shield via terminal 61, which is connected to the enclosure via an RC-link.

Bus termination

Terminate the RS485 bus with resistors at both ends. For this purpose, set switch S801 on the control card for ON.

Set the communication protocol to parameter 8-30 Protocol.

A separate manual for the MCT 10 Set-up Software is available.

How to Install

VLT® Micro Drive FC 51

The MCT 10 Set-up Software modules

The following modules are included in the software package:

MCT 10 Set-up Software

Setting parameters.

Copy to and from frequency converters.

Documentation and print out of parameter

settings including diagrams.

External user interface

Preventive maintenance schedule.

Clock settings.

Timed action programming.

Smart logic controller set-up.

Table 6.9 MCT 10 Set-up Software

Ordering number

Order the CD containing the 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.

Safety

6.20

6.20.2 Safety Ground Connection

The frequency converter has a high leakage current and must be grounded appropriately for safety reasons according to EN 50178.

WARNING

LEAKAGE CURRENT HAZARD

Leakage currents exceed 3.5 mA. Failure to ground the frequency converter properly can result in death or serious injury.

Ensure the correct grounding of the equipment

•

by a certied electrical installer.

6.20.1 High-voltage Test

Carry out a high-voltage test by short-circuiting terminals U, V, W, L1, L2, and L3. Energize maximum 2.15 kV DC for 380–500 V frequency converters and 2.525 kV DC for 525– 690 V frequency converters for 1 s between this short circuit and the chassis.

WARNING

LEAKAGE CURRENT HAZARD

Leakage currents exceed 3.5 mA. Failure to ground the frequency converter properly can result in death or serious injury.

Ensure the correct grounding of the equipment

•

by a certied electrical installer.

Programming Design Guide

7 Programming

7.1 How to Programme

7.1.1 Programming with MCT 10 Set-up Software

The frequency converter can be programmed from a PC via RS485 port using the MCT 10 Set-up Software.

This software can either be ordered using ordering number 130B1000 or downloaded from the Danfoss web site:

www.danfoss.com/BusinessAreas/DrivesSolutions/softwaredownload

Refer to VLT® Motion Control Tools MCT 10 Set-up Software Operating Instructions.

7.1.2 Programming with the LCP 11 or LCP 12

The LCP is divided into 4 functional groups:

1. Numeric display.

2. Menu key.

3. Navigation keys.

4. Operation keys and indicator lights.

The display

The display shows dierent information.

Set-up number shows the active set-up and the edit setup. If the same set-up acts as both active and edit set-up, only that set-up number is shown (factory setting). When active and edit set-up dier, the display shows both numbers (set-up 12). The ashing number indicates the edit set-up.

7 7

Illustration 7.3 Indicating Set-up

The small digits to the left are the selected parameter number.

Illustration 7.1 LCP 12 with Potentiometer

Illustration 7.2 LCP 11 without Potentiometer

Illustration 7.4 Indicating Selected Parameter Number

The large digits in the middle of the display show the value of the selected parameter.

Illustration 7.5 Indicating Value of Selected Parameter

The right side of the display shows the unit of the selected parameter. This can be either Hz, A, V, kW, hp, %, s, or RPM.

130BA466.10

Programming

Illustration 7.6 Indicating Unit of Selected Parameter

Motor direction is shown to the bottom left of the display, indicated by a small arrow pointing either clockwise or counterclockwise.

Illustration 7.7 Indicating Motor Direction

Press [Menu] to select 1 of the following menus

Status Menu

The status menu is either in readout mode or hand-on mode. In readout mode, the value of the currently selected readout parameter is shown in the display.

In hand-on mode, the local LCP reference is displayed.

Quick Menu

Displays Quick Menu parameters and their settings. Parameters in the Quick Menu can be accessed and edited from here. Most applications can be run by setting the parameters in Quick Menu.

Main Menu

Displays Main Menu parameters and their settings. All parameters can be accessed and edited here.

Indicator lights

Green indicator light: The frequency converter is

•

on.

Yellow indicator light: Indicates a warning. See

•

chapter Troubleshooting in the VLT 51 Programming Guide.

Flashing red LED: Indicates an alarm. See chapter

•

Troubleshooting in VLT Programming Guide.

Navigation keys [Back]: For moving to the previous step or layer in the

navigation structure. [▲] [▼]: For maneuvering between parameter groups, parameters, and within parameters. [OK]: For selecting a parameter and for accepting changes to parameter settings.

Micro Drive FC 51

VLT® Micro Drive FC 51

Micro Drive FC

Pressing [OK] for more than 1 s enters the adjust mode. In the adjust mode, it is possible to make fast adjustment by pressing [▲] [▼] combined with [OK].

Press [▲] [▼] to change value. Press [OK] to shift between digits quickly.

To exit the adjust mode, press [OK] more than 1 s again with changes saving or press [Back] without changes saving.

Operation keys

A yellow indicator light above the operation keys indicates the active key. [Hand On]: Starts the motor and enables control of the frequency converter via the LCP. [O/Reset]: The motor stops except in alarm mode. In alarm mode, the motor is reset. [Auto On]: The frequency converter is controlled either via control terminals or serial communication. [Potentiometer] (LCP 12): The potentiometer works in 2 ways depending on the mode in which the frequency converter is running. In auto mode, the potentiometer acts as an extra programmable analog input. In hand-on mode, the potentiometer controls local reference.

Status Menu

7.2

After power-up, the Status Menu is active. Press [Menu] to toggle between Status, Quick Menu, and Main Menu.

[▲] and [▼] toggle between the options in each menu.

The display indicates the status mode with a small arrow above Status.

Illustration 7.8 Indicating Status Mode

Programming Design Guide

7.3 Quick Menu

The Quick Menu gives easy access to the most frequently used parameters.

1. To enter Quick Menu, press [Menu] key until indicator in display is placed above Quick Menu.

Press [▲] [▼] to select either QM1 or QM2, then press [OK].

Press [▲] [▼] to browse through the parameters in the Quick Menu.

4. Press [OK] to select a parameter.

Press [▲] [▼] to change the value of a parameter setting.

6. Press [OK] to accept the change.

7. To exit, press either [Back] twice to enter Status, or press [Menu] once to enter Main Menu.

Illustration 7.9 Indicating Quick Menu Mode

1-20 Motor Power [kW]/[hp] (P

m.n

)

Option: Function:

[14] 5.50 kW/7.50 hp

[15] 7.50 kW/10.0 hp

[16] 11.00 kW/15.00 hp

[17] 15.00 kW/20.00 hp

[18] 18.50 kW/25.00 hp

[19] 22.00 kW/29.50 hp

[20] 30.00 kW/40.00 hp

NOTICE

Changing this parameter aects parameters 1-22 Motor Voltage to 1-25 Motor Nominal Speed, 1-30 Stator Resistance (Rs), 1-33 Stator Leakage Reactance (X1), and 1-35 Main Reactance (Xh).

1-22 Motor Voltage (U_

Range: Function:

230/400 V [50–999 V] Enter motor voltage from nameplate

1-23 Motor Frequency (f_

Range: Function:

50 Hz* [20–400 Hz] Enter motor frequency from nameplate

data.

m.n

data.

m.n

)

7 7

7.4 Quick Menu Parameters

7.4.1 Quick Menu Parameters - Basic Settings QM1

This section describes the parameters in Quick Menu.

*=Factory setting.

1-20 Motor Power [kW]/[hp] (P

Option: Function:

Enter motor power from nameplate

data.

Two sizes down, 1 size up from nominal

VLT rating.

[1] 0.09 kW/0.12 hp

[2] 0.12 kW/0.16 hp

[3] 0.18kW/0.25 hp

[4] 0.25 kW/0.33 hp

[5] 0.37kW/0.50 hp

[6] 0.55 kW/0.75 hp

[7] 0.75 kW/1.00 hp

[8] 1.10 kW/1.50 hp

[9] 1.50 kW/2.00 hp

[10] 2.20 kW/3.00 hp

[11] 3.00 kW/4.00 hp

[12] 3.70 kW/5.00 hp

[13] 4.00 kW/5.40 hp

m.n

)

1-24 Motor Current (I_

m.n

)

Range: Function:

M-type dependent* [0.01–100.00 A] Enter motor current from

nameplate data.

1-25 Motor Nominal Speed (n_

m.n

)

Range: Function:

M-type Dependent* [100–9999

RPM]

Enter motor nominal

speed from nameplate

data.

1-29 Automatic Motor Tuning (AMT)

Option: Function:

Use AMT to optimize motor performance.

When parameter 1-01 Motor Control Principle is

set to [0] U/f, AMT does not work.

NOTICE

This parameter cannot be changed while the motor is running.

1. Stop the frequency converter - make

sure that the motor is at standstill.

2. Select [2] Enable AMT.

3. Apply start signal:

- Via LCP: Press [Hand On].

- Or in remote on mode: Apply start

signal on terminal 18.

[0] * O AMT function is disabled.

Programming

VLT® Micro Drive FC 51

1-29 Automatic Motor Tuning (AMT)

Option: Function:

[2] Enable AMT AMT function starts running.

NOTICE

To gain optimum tuning of the frequency converter, run AMT on a cold motor.

[3] Complete

AMT with

Rotating

motor

NOTICE

The motor rotates when this option is active.

With this option selected, the frequency

converter optimizes the following parameters:

1-35 Main Reactance (X2), 1-30 Stator

Resistance (Rs), and 1-33 Stator Leakage

Reactance (X1).

3-42 Ramp1 Ramp-down Time

Range: Function:

Size

related*

[0.05-3600.00s]Enter ramp-down time from rated

motor frequency (f

1-23 Motor Frequency to 0 Hz.

Select a ramp-down time that does

not cause overvoltage in the inverter

due to regenerative operation of

motor. Furthermore, regenerative

torque must not exceed limit set in

parameter 4-17 Torque Limit in

Generator Mode.

) in parameter

M,N

3-02 Minimum Reference

Range: Function:

0.00* [-4999-4999] Enter the value for minimum reference.

The sum of all internal and external

references are clamped (limited) to the

minimum reference value, parameter 3-02

Minimum Reference.

3-03 Maximum Reference

Range: Function:

The range of this parameter is

parameter 3-02 Minimum

Reference–4999.

60.000 Hz or

50.000 Hz

depending on the

setting in par.

0-03.*

[-4999–

4999]

Enter the value for maximum

reference.

The sum of all internal and

external references are clamped

(limited) to the maximum

reference value, parameter 3-03

Maximum Reference.

3-41 Ramp1 Ramp-up Time

Range: Function:

Size

related*

[0.05-3600.00s]Enter ramp-up time from 0 Hz to

rated motor frequency (f

parameter 1-23 Motor Frequency.

Select a ramp-up time ensuring

that torque limit is not exceeded,

see parameter 4-16 Torque Limit in

Motor Mode.

M,N

) set in

Programming Design Guide

7.4.2 Quick Menu Parameters - PI Basic Settings QM2

The following is a brief description of the parameters for the PI basic settings. For a more detailed description, see

VLT® Micro Drive FC 51 Programming Guide.

1-00 Conguration Mode

Option: Function:

Use this parameter for selecting the

application control principle to be used when

a remote reference is active.

NOTICE

Changing this parameter resets

parameter 3-00 Reference Range, parameter 3-02 Minimum Reference and parameter 3-03 Maximum Reference to

their default values.

NOTICE

This parameter cannot be adjusted while motor is running.

[0 ] * Speed

Open

Loop

[3] Process Enables process closed-loop control. See

3-02 Minimum Reference

Range: Function:

0.00* [-4999-4999] Enter the value for minimum reference.

3-03 Maximum Reference

Range: Function:

60.000 Hz or

50.000 Hz

depending on the

setting in par.

0-03.*

For normal speed control (references).

parameter group 7-3* Process PI Control for

further information on PI controller.

The sum of all internal and external

references are clamped (limited) to the

minimum reference value, parameter 3-02

Minimum Reference.

The range of this parameter is

parameter 3-02 Minimum

Reference–4999.

[-4999–

4999]

Enter the value for maximum

reference.

The sum of all internal and

external references are clamped

(limited) to the maximum

reference value, parameter 3-03

Maximum Reference.

3-10 Preset Reference

Option: Function:

Each parameter set-up contains 8 preset

references which are selectable via 3 digital

inputs or eldbus.

[0.00]*-100.00–

100.00%

[18]

Bit2

0 0 0 0

0 0 1 1

0 1 0 2

0 1 1 3

1 0 0 4

1 0 1 5

1 1 0 6

1 1 1 7

Table 7.1 Parameter Group 5-1* Digital

Inputs Option [16], [17], and [18]

Enter the dierent preset references using

array programming.

Normally, 100%=value set in parameter 3-03

Maximum Reference.

However, there are exceptions if parameter

3-00 Reference Range is set to [0] Min - Max.

Example 1:

Parameter 3-02 Minimum Reference is set to 20,

and parameter 3-03 Maximum Reference is set

to 50. In this case 0%=0, and 100%=50.

Example 2:

Parameter 3-02 Minimum Reference is set to -70,

and parameter 3-03 Maximum Reference is set

to 50. In this case 0%=0, and 100%=70.

[17]

Bit1

[16]

Bit0

[16]

Bit0

4-12 Motor Speed Low Limit

Range: Function:

0.0 Hz* [0.0-400.0 Hz] Set the minimum motor speed limit

corresponding to the minimum output

frequency of the motor shaft.

NOTICE

As the minimum output frequency is an absolute value, and the frequency converter cannot deviate from it.

4-14 Motor Speed High Limit

Range: Function:

65.0 Hz* [0.0-400.0 Hz] Set the maximum motor speed

corresponding to the maximum output

frequency of the motor shaft.

NOTICE

The maximum output frequency is an absolute value, and the frequency converter cannot deviate from it.

7 7

Programming

VLT® Micro Drive FC 51

6-22 Terminal 60 Low Current

Range: Function:

NOTICE

Set the value to a minimum of 2 mA to activate the live zero timeout function in parameter 6-01 Live Zero Timeout Time.

This reference signal should correspond

to minimum reference value set in

parameter 6-24 Terminal 60 Low Ref./Feedb.

Value.

0.14

mA*

[0.00–

20.00 mA]

Enter the low current value.

6-23 Terminal 60 High Current

Range: Function:

This reference signal should

20.00 mA* [0.00–20.00

mA]

correspond to the high current value

set in parameter 6-25 Terminal 60 High

Ref./Feedb. Value.

Enter high current value.

6-24 Terminal 60 Low Ref./Feedb. Value

Range: Function:

The scaling value corresponding to the

low current set in parameter 6-22 Terminal

60 Low Current.

0.000* [-4999–4999] Enter analog input scaling value.

6-25 Terminal 60 High Ref./Feedb. Value

Range: Function:

The scaling value

corresponding to the high

current set in parameter

6-23 Terminal 60 High

Current.

60.000 Hz or 50.000

Hz depending on

the setting in par.

0-03.*

[-4999-4999] Enter analog input scaling

value.

6-26 Terminal 60 Filter Time Constant

Range: Function:

A rst-order digital low-pass lter time

constant for suppressing electrical noise in

terminal 60. A high time constant value

improves dampening, but also increases

time delay through the lter.

NOTICE

This parameter cannot be changed while the motor is running.

0.01 s* [0.01–

10.00 s]

Enter the time constant.

7-20 Process CL Feedback Resources

Option: Function:

Select input to function as feedback

signal.

[0] * No Function

[1] Analog Input 53

[2] Analog Input 60

[8] Pulse Input 33

[11] Local Bus

7-30 Process PI Normal/Inverse Control

Option: Function:

[0] * Normal Feedback larger than setpoint results in a speed

reduction.

Feedback less than setpoint results in a speed

increase.

[1] Inverse Feedback larger than setpoint results in a speed

increase.

Feedback less than setpoint results in a speed

reduction.

7-31 Process PI Anti Windup

Option: Function:

[0] Disable Regulation of a given error continues even when

the output frequency cannot be increased/

decreased.

[1] * Enable PI controller ceases from regulating a given error

when the output frequency cannot be increased/

decreased.

7-32 Process PI Start Speed

Range: Function:

0.0 Hz* [0.0–200.0 Hz] Until the set motor speed has been

reached, the frequency converter

operates in open-loop mode.

7-33 Process PI Proportional Gain

Option: Function:

[0.01] * 0.00–10.00 Enter the value for the proportional gain,

that is, the multiplication factor of the error

between the setpoint and the feedback

signal.

NOTICE

0.00=O.

7-34 Process PI Integral Time

Range: Function:

9999.00 s* [0.10–

9999.00 s]

The integrator provides an increasing

gain at a constant error between the

setpoint and the feedback signal. The

integral time is the time needed by the

integrator to reach the same gain as

the proportional gain.

Programming Design Guide

7-38 Process Feed Forward Factor

Range: Function:

0%* [0–

400%]

The FF factor sends a part of the reference

signal around the PI controller which then only

aects part of the control signal.

Activate the FF factor to obtain less overshoot

and high dynamics when changing the setpoint.

This parameter is always active when parameter

1-00 Conguration Mode is set to [3] Process.

7.5 Main Menu

[Main Menu] is used for programming all parameters. The Main Menu parameters can be accessed immediately unless a password has been created via

parameter 0-60 Main Menu Password. For most VLT® Micro Drive applications it is not necessary to access the Main Menu parameters, but instead the Quick Menu provides the simplest and quickest access to the typical required parameters.

The Main Menu accesses all parameters.

1. Press [Menu] key until indicator light in the display is located above Main Menu.

Use [▲] [▼] to browse through the parameter groups.

3. Press [OK] to select a parameter group.

Use [▲] [▼] to browse through the parameters in the specic group.

5. Press [OK] to select the parameter.

Use [▲] [▼] to set/change the parameter value.

Press [Back] to go back 1 level.

Data transfer from the LCP to the frequency converter

1. Go to parameter 0-50 LCP Copy.

2. Press [OK].

3. Select [2] All from LCP.

4. Press [OK].

7.7 Readout and Programming of Indexed Parameters

Use chapter 7.4.2 Quick Menu Parameters - PI Basic Settings QM2 as an example.

Press [OK] to select a parameter and use [▲]/[▼]

•

for selecting the indexed values.

To change a parameter value, select the value

•

and press [OK].

Change the value using [▲]/[▼].

•

Press [OK] to accept the new setting.

•

Pressing [OK] for more than 1 s activates the

•

adjust mode. In the adjust mode, it is possible to make fast adjustment by pressing [▲]/[▼] together with [OK].

Press [▲]/[▼] to change the value. Press [OK] to

•

shift between digits. To exit the adjust mode, press [OK] for more than 1 s again to exit and save changes, or press [Back] to exit without saving changes.

Initialize the Frequency Converter to

7.8 Default Settings in two Ways

Recommended initialization (via parameter 14-22 Operation Mode)

7 7

Quick Transfer of Parameter Settings

7.6 between Multiple Frequency Converters

When the set-up of a frequency converter is completed, it is recommended to store the data in the LCP or on a PC via MCT 10 Set-up Software.

Data transfer from the frequency converter to the LCP

1. Go to parameter 0-50 LCP Copy.

2. Press [OK].

3. Select [1] All to LCP.

4. Press [OK].

Connect the LCP to another frequency converter and copy the parameter settings to this frequency converter as well.

1. Select parameter 14-22 Operation Mode.

2. Press [OK].

3. Select initialization and Press [OK].

4. Cut o the mains supply and wait until the display turns o.

5. Reconnect the mains supply, the frequency converter is now reset.

Programming

The following parameters are not reset during the initialization:

Parameter 8-30 Protocol

•

Parameter 8-31 Address

•

Parameter 8-32 Baud Rate

•

Parameter 8-33 Parity / Stop Bits

•

Parameter 8-35 Minimum Response Delay

•

Parameter 8-36 Maximum Response Delay

•

Parameter 15-00 Operating hours to

•

parameter 15-05 Over Volt's

Parameter 15-03 Power Up's

•

Parameter 15-04 Over Temp's

•

Parameter 15-05 Over Volt's

•

Parameter 15-30 Alarm Log: Error Code

•

Initialization using [OK] and [Menu] keys:

The LCP display shows alarm 80, Drive initialised to default value after the power cycle.

Parameter group 15-4* Drive Identication

•

parameters

1. Power o the frequency converter.

2. Press [OK] and [Menu].

3. Power up the frequency converter while still pressing the keys for 10 s.

4. The frequency converter is now reset, except for the following parameters:

Parameter 15-00 Operating hours

•

Parameter 15-03 Power Up's

•

Parameter 15-04 Over Temp's

•

Parameter 15-05 Over Volt's

•

Parameter group 15-4* Drive identi-

•

cation parameters

VLT® Micro Drive FC 51

61 68 69

COMM. GND

130BB795.10

130BB966.10

RS485 Installation and Set-... Design Guide

8 RS485 Installation and Set-up

8.1 RS485 Installation and Set-up

8.1.1 Overview

RS485 is a 2-wire bus interface compatible with multi-drop network topology, that is, nodes can be connected as a bus, or via drop cables from a common trunk line. A total of 32 nodes can be connected to 1 network segment. Repeaters divide network segments.

NOTICE

Each repeater functions as a node within the segment in which it is installed. Each node connected within a given network must have a unique node address across all segments.

Terminate each segment at both ends, using either the termination switch (S801) of the frequency converters or a biased termination resistor network. Always use shielded twisted pair (STP) cable for bus cabling, and always follow good common installation practice. Low-impedance ground connection of the shield at every node is important, including at high frequencies. Thus, connect a large surface of the shield to ground, for example with a cable clamp or a conductive cable gland. It may be necessary to apply potential equalizing cables to maintain the same ground potential throughout the network, particularly in installations with long cables. To prevent impedance mismatch, always use the same type of cable throughout the entire network. When connecting a motor to the frequency converter, always use shielded motor cable.

NOTICE

To reduce noise between conductors, use shielded, twisted-pair cables.

Illustration 8.1 Network Connection

8.1.3 Frequency Converter Hardware Set-up

To terminate the RS485 bus, use the terminator DIP switch on the main control board of the frequency converter.

8 8

Cable Shielded twisted pair (STP)

Impedance

[Ω]

Cable length

[m (ft)]

Table 8.1 Cable Specications

120

Maximum 1200 (3937) (including drop lines)

Maximum 500 (1640) station-to-station

8.1.2 Network Connection

Illustration 8.2 Terminator Switch Factory Setting

Connect the frequency converter to the RS485 network as follows (see also Illustration 8.1):

1. Connect signal wires to terminal 68 (P+) and terminal 69 (N-) on the main control board of the frequency converter.

2. Connect the cable shield to the cable clamps.

The factory setting for the DIP switch is OFF.

Fieldbus cable

Brake resistor

Min.200mm

90° crossing

130BC010.10

RS485 Installation and Set-...

VLT® Micro Drive FC 51

8.1.4 EMC Precautions

8.1.5 Frequency Converter Parameter Settings for Modbus Communication

The following EMC precautions are recommended to achieve interference-free operation of the RS485 network.

Observe relevant national and local regulations, for example regarding protective ground connection. To avoid coupling of high frequency noise from 1 cable to another, keep the RS485 communication cable away from motor and brake resistor cables. Keep the greatest possible distance between the cables, especially where cables run in parallel over long distances. The minimum distance is 200 mm (8 inches). When crossing is unavoidable, the RS485 cable must cross motor cable and brake resistor cables at an angle of 90°.

The following parameters apply to the RS485 interface (FCport):

Parameter Function

Parameter 8-30 Prot

ocol

Parameter 8-31 Add

ress

Parameter 8-32 Bau

d Rate

Select the application protocol to run on the

RS485 interface.

Set the node address.

NOTICE

The address range depends on the protocol selected in parameter 8-30 Protocol.

Set the baud rate.

NOTICE

The baud rate depends on the protocol selected in parameter 8-30 Protocol.

Parameter 8-33 Pari

ty / Stop Bits

Set the parity and number of stop bits.

NOTICE

The selection depends on the protocol selected in parameter 8-30 Protocol.

Illustration 8.3 EMC Precautions for RS485

Parameter 8-35 Min

imum Response

Delay

Parameter 8-36 Ma

ximum Response

Delay

Table 8.2 Parameters Related to RS485 Interface

FC Protocol Overview

8.2

Specify a minimum delay time between

receiving a request and transmitting a

response. This function is for overcoming

modem turnaround delays.

Specify a maximum delay time between

transmitting a request and receiving a

response.

8.2.1 Overview

The FC protocol, also referred to as FC eldbus, is the Danfoss standard eldbus. It denes an access technique according to the master/slave principle for communications via a eldbus. 1 master and a maximum of 126 slaves can be connected to the bus. The master selects the individual slaves via an address character in the telegram. A slave itself can never transmit without rst being requested to do so, and direct message transfer between the individual slaves is not possible. Communications occur in the half-duplex mode. The master function cannot be transferred to another node (single-master system).

The physical layer is RS485, thus utilizing the RS485 port built into the frequency converter.

0 1 32 4 5 6 7

195NA036.10

Start bit

Even Stop Parity bit

STX LGE ADR DATA BCC

195NA099.10

RS485 Installation and Set-... Design Guide

The FC protocol supports dierent telegram formats:

A short format of 8 bytes for process data.

•

A long format of 16 bytes that also includes a

•

parameter channel.

A format used for texts.

•

8.2.2 FC with Modbus RTU

The FC protocol provides access to the control word and bus reference of the frequency converter.

The control word allows the Modbus master to control several important functions of the frequency converter:

Start.

•

Stop of the frequency converter in various ways:

•

- Coast stop.

- Quick stop.

- DC brake stop.

- Normal (ramp) stop.

Reset after a fault trip.

•

Run at various preset speeds.

•

Run in reverse.

•

Change of the active set-up.

•

Control of the 2 relays built into the frequency

•

converter.

The bus reference is commonly used for speed control. It is also possible to access the parameters, read their values, and where possible, write values to them. Accessing the parameters controlling the setpoint of the frequency converter when its internal PI controller is used.

oers a range of control options, including

Network Conguration

8.3

To enable the FC protocol for the frequency converter, set the following parameters.

Parameter Setting

Parameter 8-30 Protocol FC

Parameter 8-31 Address 1–126

Parameter 8-32 Baud

Rate

Parameter 8-33 Parity /

Stop Bits

Table 8.3 Parameters to Enable the Protocol

2400–115200

Even parity, 1 stop bit (default)

8.4 FC Protocol Message Framing Structure

8.4.1 Content of a Character (byte)

Each character transferred begins with a start bit. Then 8 data bits are transferred, corresponding to a byte. Each character is secured via a parity bit. This bit is set at 1 when it reaches parity. Parity is when there is an equal number of 1 s in the 8 data bits and the parity bit in total. A stop bit completes a character, thus consisting of 11 bits in all.

Illustration 8.4 Content of a Character

8.4.2 Telegram Structure

Each telegram has the following structure:

Start character (STX)=02 hex.

•

A byte denoting the telegram length (LGE).

•

A byte denoting the frequency converter address

•

(ADR).

Several data bytes (variable, depending on the type of telegram) follow.

8 8

A data control byte (BCC) completes the telegram.

Illustration 8.5 Telegram Structure

ADRLGESTX PCD1 PCD2 BCC

130BA269.10

PKE INDADRLGESTX PCD1 PCD2 BCC

130BA271.10

PWE

high

PWE

low

RS485 Installation and Set-...

VLT® Micro Drive FC 51

8.4.3 Telegram Length (LGE)

The telegram length is the number of data bytes plus the address byte ADR and the data control byte BCC.

The slave returns the address byte unchanged to the master in the response telegram.

Bit 0–6 = 0 broadcast.

•

8.4.5 Data Control Byte (BCC)

4 data bytes LGE=4+1+1=6 bytes

12 data bytes LGE=12+1+1=14 bytes

Telegrams containing texts

Table 8.4 Length of Telegrams

1) The 10 is the

on the length of the text).

xed characters, while the n is variable (depending

101)+n bytes

The checksum is calculated as an XOR-function. Before the rst byte in the telegram is received, the calculated checksum is 0.

8.4.4 Frequency Converter Address (ADR)

Address format 1–126

Bit 7 = 1 (address format 1–126 active).

•

Bit 0–6 = frequency converter address 1–126.

•

8.4.6 The Data Field

The structure of data blocks depends on the type of telegram. There are 3 telegram types, and the type applies for both control telegrams (master⇒slave) and response telegrams (slave⇒master).

The 3 types of telegram are:

Process block (PCD).

•

Parameter block.

•

Text block.

•

Process block (PCD)

The PCD is made up of a data block of 4 bytes (2 words) and contains:

Control word and reference value (from master to slave).

•

Status word and present output frequency (from slave to master).

•

Illustration 8.6 Process Block

Parameter block

The parameter block is used to transfer parameters between master and slave. The data block is made up of 12 bytes (6 words) and also contains the process block.

Illustration 8.7 Parameter Block

PKE IND

130BA270.10

ADRLGESTX PCD1 PCD2 BCCCh1 Ch2 Chn

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

130BB918.10

PKE IND

PWE

high

PWE

low

AK PNU

Parameter

commands

and replies

Parameter

number

RS485 Installation and Set-... Design Guide

Text block

The text block is used to read or write texts via the data block.

Illustration 8.8 Text Block

8.4.7 The PKE Field

The PKE eld contains 2 subelds:

Parameter command and response (AK)

•

Parameter number (PNU)

•

Illustration 8.9 PKE Field

Bits 12–15 transfer parameter commands from master to slave and return processed slave responses to the master.

Parameter commands master⇒slave

Bit number Parameter command

15 14 13 12

0 0 0 0 No command.

0 0 0 1 Read parameter value.

0 0 1 0 Write parameter value in RAM (word).

0 0 1 1 Write parameter value in RAM (double

word).

1 1 0 1 Write parameter value in RAM and

EEPROM (double word).

1 1 1 0 Write parameter value in RAM and

EEPROM (word).

1 1 1 1 Read text.

Table 8.5 Parameter Commands

Response slave⇒master

Bit number Response

15 14 13 12

0 0 0 0 No response.

0 0 0 1 Parameter value transferred (word).

0 0 1 0 Parameter value transferred (double

word).

0 1 1 1 Command cannot be performed.

1 1 1 1 Text transferred.

Table 8.6 Response

If the command cannot be performed, the slave sends this response 0111 Command cannot be performed and issues the following fault report in Table 8.7.

Fault code FC specication

0 Illegal parameter number.

1 Parameter cannot be changed.

2 Upper or lower limit is exceeded.

3 Subindex is corrupted.

4 No array.

5 Wrong data type.

6 Not used.

7 Not used.

9 Description element is not available.

11 No parameter write access.

15 No text available.

17 Not applicable while running.

18 Other errors.

100 –

>100 –

130 No bus access for this parameter.

131 Write to factory set-up is not possible.

132 No LCP access.

252 Unknown viewer.

253 Request is not supported.

254 Unknown attribute.

255 No error.

Table 8.7 Slave Report

8 8

RS485 Installation and Set-...

VLT® Micro Drive FC 51

8.4.8 Parameter Number (PNU)

8.4.11 Data Types Supported by the

Frequency Converter

Bits 0–11 transfer parameter numbers. The function of the relevant parameter is dened in the parameter description

in the VLT® Micro Drive FC 51 Programming Guide.

8.4.9 Index (IND)

The index is used with the parameter number to read/ write access parameters with an index, for example, parameter 15-30 Alarm Log: Error Code. The index consists of 2 bytes; a low byte, and a high byte.

Only the low byte is used as an index.

8.4.10 Parameter Value (PWE)

The parameter value block consists of 2 words (4 bytes), and the value depends on the dened command (AK). The master prompts for a parameter value when the PWE block

contains no value. To change a parameter value (write), write the new value in the PWE block and send from the master to the slave.

When a slave responds to a parameter request (read command), the present parameter value in the PWE block is transferred and returned to the master. If a parameter contains several data options, for example parameter 0-01 Language, select the data value by entering the value in the PWE block. Serial communication is only capable of reading parameters containing data type 9 (text string).

Parameter 15-40 FC Type to parameter 15-53 Power Card Serial Number contain data type 9.

For example, read the unit size and mains voltage range in parameter 15-40 FC Type. When a text string is transferred (read), the length of the telegram is variable, and the texts are of dierent lengths. The telegram length is dened in the 2nd byte of the telegram (LGE). When using text transfer, the index character indicates whether it is a read or a write command.

Unsigned means that there is no operational sign in the telegram.

Data types Description

3 Integer 16

4 Integer 32

5 Unsigned 8

6 Unsigned 16

7 Unsigned 32

9 Text string

Table 8.8 Data Types

8.4.12 Conversion

The programming guide contains the descriptions of attributes of each parameter. Parameter values are transferred as whole numbers only. Conversion factors are used to transfer decimals.

Parameter 4-12 Motor Speed Low Limit [Hz] has a conversion factor of 0.1. To preset the minimum frequency to 10 Hz, transfer the value 100. A conversion factor of 0.1 means that the value transferred is multiplied by 0.1. The value 100 is thus perceived as 10.0.

Conversion index Conversion factor

74 3600

2 100

1 10

0 1

-1 0.1

-2 0.01

-3 0.001

-4 0.0001

-5 0.00001

Table 8.9 Conversion

8.4.13 Process Words (PCD)

To read a text via the PWE block, set the parameter command (AK) to F hex. The index character high-byte must be 4.

The block of process words is divided into 2 blocks of 16 bits, which always occur in the dened sequence.

PCD 1 PCD 2

Control telegram (master⇒slave control word)

Control telegram (slave⇒master) status word

Table 8.10 Process Words (PCD)

Reference value

Present output

frequency

E19E H

PKE IND PWE

high

PWE

low

0000 H 0000 H 03E8 H

130BA092.10

119E H

PKE

IND

PWE

high

PWE

low

0000 H 0000 H 03E8 H

130BA093.10

1155 H

PKE IND PWE

high

PWE

low

0000 H 0000 H 0000 H

130BA094.10

130BA267.10

1155 H

PKE

IND

0000 H 0000 H 03E8 H

PWE

high

PWE

low

RS485 Installation and Set-... Design Guide

8.5 Examples

8.5.1 Writing a Parameter Value

Change parameter 4-14 Motor Speed High Limit [Hz] to 100 Hz. Write the data in EEPROM.

PKE = E19E hex - Write single word in parameter 4-14 Motor Speed High Limit [Hz]:

IND = 0000 hex.

•

PWEHIGH = 0000 hex.

•

PWELOW = 03E8 hex.

•

Data value 1000, corresponding to 100 Hz, see chapter 8.4.12 Conversion.

The telegram looks like Illustration 8.10.

Illustration 8.10 Telegram

NOTICE

Parameter 4-14 Motor Speed High Limit [Hz] is a single

word, and the parameter command for write in EEPROM is E. Parameter 4-14 Motor Speed High Limit [Hz] is 19E in hexadecimal.

Illustration 8.12 Telegram

If the value in parameter 3-41 Ramp 1 Ramp Up Time is 10 s, the response from the slave to the master is shown in Illustration 8.13.

Illustration 8.13 Response

3E8 hex corresponds to 1000 decimal. The conversion index for parameter 3-41 Ramp 1 Ramp Up Time is -2, that is, 0.01.

Parameter 3-41 Ramp 1 Ramp Up Time is of the type Unsigned 32.

Modbus RTU Overview

8.6

8.6.1 Prerequisite Knowledge

Danfoss assumes that the installed controller supports the interfaces in this manual, and strictly observes all requirements and limitations stipulated in the controller and frequency converter.

8 8

The response from the slave to the master is shown in Illustration 8.11.

Illustration 8.11 Response from Master

8.5.2 Reading a Parameter Value

Read the value in parameter 3-41 Ramp 1 Ramp Up Time.

PKE = 1155 hex - Read parameter value in parameter 3-41 Ramp 1 Ramp Up Time:

IND = 0000 hex.

•

PWE

•

PWE

•

= 0000 hex.

HIGH

= 0000 hex.

LOW

The built-in Modbus RTU (remote terminal unit) is designed to communicate with any controller that supports the interfaces dened in this manual. It is assumed that the user has full knowledge of the capabilities and limitations of the controller.

8.6.2 What the User Should Already Know

The built-in Modbus RTU is designed to communicate with any controller that supports the interfaces dened in this manual. It is assumed that the user has full knowledge of the capabilities and limitations of the controller.

8.6.3 Overview

Regardless of the type of physical communication networks, this section describes the process a controller uses to request access to another device. This process includes how the Modbus RTU responds to requests from another device, and how errors are detected and reported. It also establishes a common format for the layout and contents of telegram elds.

RS485 Installation and Set-...

VLT® Micro Drive FC 51

During communications over a Modbus RTU network, the protocol:

Determines how each controller learns its device

•

address.

Recognizes a telegram addressed to it.

•

Determines which actions to take.

•

Extracts any data or other information contained

•

in the telegram.

If a reply is required, the controller constructs the reply telegram and sends it. Controllers communicate using a master/slave technique in which only the master can initiate transactions (called queries). Slaves respond by supplying the requested data to the master, or by acting as requested in the query. The master can address individual slaves, or initiate a broadcast telegram to all slaves. Slaves return a response to queries that are addressed to them individually. No responses are returned to broadcast queries from the master.

The Modbus RTU protocol establishes the format for the master query by providing the following information:

The device (or broadcast) address.

•

A function code dening the requested action.

•

Any data to be sent.

•

An error-checking eld.

•

The response telegram of the slave device is also constructed using Modbus protocol. It contains elds conrming the action taken, any data to be returned, and an error-checking eld. If an error occurs in receipt of the telegram, or if the slave is unable to perform the requested action, the slave constructs and sends an error message. Alternatively, a timeout occurs.

8.6.4 Frequency Converter with Modbus RTU

The bus reference is commonly used for speed control. It is also possible to access the parameters, read their values, and, where possible, write values to them. Accessing the parameters oers a range of control options, including controlling the setpoint of the frequency converter when its internal PI controller is used.

8.7 Network Conguration

To enable Modbus RTU on the frequency converter, set the following parameters:

Parameter Setting

Parameter 8-30 Protocol Modbus RTU

Parameter 8-31 Address 1–247

Parameter 8-32 Baud Rate 2400–115200

Parameter 8-33 Parity / Stop Bits Even parity, 1 stop bit

Table 8.11 Network Conguration

8.8

8.8.1 Introduction

The controllers are set up to communicate on the Modbus network using RTU (remote terminal unit) mode, with each byte in a telegram containing 2 4-bit hexadecimal characters. The format for each byte is shown in Table 8.12.

Start

bit

Run at various preset speeds.

•

Run in reverse.

•

Change the active set-up.

•

Control built-in relay of the frequency converter.

•

(default)

Modbus RTU Message Framing Structure

Data byte Stop/

Stop

parity

The frequency converter communicates in Modbus RTU format over the built-in RS485 interface. Modbus RTU provides access to the control word and bus reference of the frequency converter.

The control word allows the Modbus master to control several important functions of the frequency converter:

Start.

•

Various stops:

•

- Coast stop.

- Quick stop.

- DC brake stop.

- Normal (ramp) stop.

Reset after a fault trip.

•

Table 8.12 Format for Each Byte

Coding system 8-bit binary, hexadecimal 0–9, A–F.

2 hexadecimal characters contained in each

8-bit eld of the telegram.

Bits per byte

Error check eld Cyclic redundancy check (CRC).

Table 8.13 Byte Details

1 start bit.

•

8 data bits, least signicant bit sent rst.

•

1 bit for even/odd parity; no bit for no

•

parity.

1 stop bit if parity is used; 2 bits if no

•

parity.

RS485 Installation and Set-... Design Guide

8.8.2 Modbus RTU Telegram Structure

The transmitting device places a Modbus RTU telegram into a frame with a known beginning and ending point. This allows receiving devices to begin at the start of the telegram, read the address portion, determine which device is addressed (or all devices, if the telegram is broadcast), and to recognize when the telegram is completed. Partial telegrams are detected and errors set as a result. Characters for transmission must be in hexadecimal 00–FF format in each eld. The frequency converter continuously monitors the network bus, also during silent intervals. When the rst eld (the address eld) is received, each frequency converter or device decodes it to determine which device is being addressed. Modbus RTU telegrams addressed to 0 are broadcast telegrams. No response is permitted for broadcast telegrams. A typical telegram frame is shown in Table 8.14.

Start Address Function Data CRC

check

T1-T2-T3-T48 bits 8 bits N x 8 bits 16 bits T1-T2-T3-

Table 8.14 Typical Modbus RTU Telegram Structure

End

When the slave sends its response, it places its own address in this address eld to let the master know which slave is responding.

8.8.5 Function Field

The function eld of a message frame contains 8 bits. Valid codes are in the range of 1-FF. Function elds are used to send messages between master and follower. When a message is sent from a master to a follower device, the function code eld tells the follower what kind of action to perform. When the follower responds to the master, it uses the function code eld to indicate either a normal (errorfree) response, or that some kind of error occurred (called an exception response). For a normal response, the follower simply echoes the original function code. For an exception response, the follower returns a code that is equivalent to the original function code with its most signicant bit set to logic 1. In addition, the follower places a unique code into the data eld of the response message. This tells the master what kind of error occurred, or the reason for the exception. Also refer to

chapter 8.8.10 Function Codes Supported by Modbus RTU and chapter 8.8.11 Modbus Exception Codes.

8 8

8.8.3 Start/Stop Field

Telegrams start with a silent period of at least 3.5 character intervals. The silent period is implemented as a multiple of character intervals at the selected network baud rate (shown as Start T1-T2-T3-T4). The rst eld to be transmitted is the device address. Following the last transmitted character, a similar period of at least 3.5 character intervals marks the end of the telegram. A new telegram can begin after this period.

Transmit the entire telegram frame as a continuous stream. If a silent period of more than 1.5 character intervals occurs before completion of the frame, the receiving device ushes the incomplete telegram and assumes that the next byte is the address eld of a new telegram. Similarly, if a new telegram begins before 3.5 character intervals after a previous telegram, the receiving device considers it a continuation of the previous telegram. This behavior causes a timeout (no response from the slave), since the value in the nal CRC eld is not valid for the combined telegrams.

8.8.4 Address Field

The address eld of a telegram frame contains 8 bits. Valid slave device addresses are in the range of 0–247 decimal. The individual slave devices are assigned addresses in the range of 1–247. (0 is reserved for broadcast mode, which all slaves recognize.) A master addresses a slave by placing the slave address in the address eld of the telegram.

8.8.6 Data Field

The data eld is constructed using sets of 2 hexadecimal digits, in the range of 00–FF hexadecimal. These digits are made up of 1 RTU character. The data eld of telegrams sent from a master to a slave device contains additional information which the slave must use to perform accordingly.

The information can include items such as:

Coil or register addresses.

•

The quantity of items to be handled.

•

The count of actual data bytes in the eld.

•

8.8.7 CRC Check Field

Telegrams include an error-checking eld, operating based on a cyclic redundancy check (CRC) method. The CRC eld checks the contents of the entire telegram. It is applied regardless of any parity check method used for the individual characters of the telegram. The transmitting device calculates the CRC value and appends the CRC as the last eld in the telegram. The receiving device recalculates a CRC during receipt of the telegram and compares the calculated value to the actual value received in the CRC eld. 2 unequal values result in bus timeout. The error-checking eld contains a 16-bit binary value implemented as 2 8-bit bytes. After the implementation, the low-order byte of the eld is appended rst, followed by the high-order byte. The CRC high-order byte is the last byte sent in the telegram.

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VLT® Micro Drive FC 51

8.8.8 Coil Register Addressing

In Modbus, all data is organized in coils and holding registers. Coils hold a single bit, whereas holding registers hold a 2 byte word (that is 16 bits). All data addresses in Modbus telegrams are referenced to 0. The rst occurrence of a data item is addressed as item number 0. For example: The coil known as coil 1 in a programmable controller is addressed as coil 0000 in the data address eld of a Modbus telegram. Coil 127 decimal is addressed as coil 007Ehex (126 decimal). Holding register 40001 is addressed as register 0000 in the data address eld of the telegram. The function code eld already species a holding register operation. Therefore, the 4XXXX reference is implicit. Holding register 40108 is addressed as register 006Bhex (107 decimal).

Coil

number

1–16 Frequency converter control word

17–32 Frequency converter speed or

33–48 Frequency converter status word

49–64 Open-loop mode: Frequency

66–65536 Reserved. –

Table 8.15 Coil Register

Description Signal

direction

Master to slave

(see Table 8.16).

Master to slave

setpoint reference range 0x0–

0xFFFF (-200% ... ~200%).

Slave to master

(see Table 8.17).

converter output frequency.

Closed-loop mode: Frequency

converter feedback signal.

Parameter write control (master to

slave).

0 = Parameter changes are written

to the RAM of the frequency

converter.

1 = Parameter changes are written

to the RAM and EEPROM of the

frequency converter.

Slave to master

Master to slave

Coil 0 1

01 Preset reference lsb

02 Preset reference msb

03 DC brake No DC brake

04 Coast stop No coast stop

05 Quick stop No quick stop

06 Freeze frequency No freeze frequency

07 Ramp stop Start

08 No reset Reset

09 No jog Jog

10 Ramp 1 Ramp 2

11 Data not valid Data valid

12 Relay 1 o Relay 1 on

13 Relay 2 o Relay 2 on

14 Set up lsb

15 –

16 No reversing Reversing

Table 8.16 Frequency Converter Control Word (FC Prole)

Coil 0 1

33 Control not ready Control ready

34 Frequency converter not

ready

35 Coast stop Safety closed

36 No alarm Alarm

37 Not used Not used

38 Not used Not used

39 Not used Not used

40 No warning Warning

41 Not at reference At reference

42 Hand mode Auto mode

43 Out of frequency range In frequency range

44 Stopped Running

45 Not used Not used

46 No voltage warning Voltage warning

47 Not in current limit Current limit

48 No thermal warning Thermal warning

Table 8.17 Frequency Converter Status Word (FC Prole)

Frequency converter ready

RS485 Installation and Set-... Design Guide

Bus

address

0 1 40001 Reserved

1 2 40002 Reserved

2 3 40003 Reserved

3 4 40004 Free – –

4 5 40005 Free – –

5 6 40006 Modbus conguration Read/Write TCP only. Reserved for Modbus TCP

6 7 40007 Last fault code Read only Fault code received from parameter database, refer to

7 8 40008 Last error register Read only Address of register with which last error occurred, refer

8 9 40009 Index pointer Read/Write Sub index of parameter to be accessed. Refer to WHAT

9 10 40010 Parameter 0-01 Language Dependent on

19 20 40020 Parameter 0-02 Motor Speed

29 30 40030 Parameter 0-03 Regional

Bus

PLC

Content Access Description

Reserved for legacy frequency converters VLT® 5000 and

VLT® 2800.

Reserved for legacy frequency converters VLT® 5000 and

VLT® 2800.

Reserved for legacy frequency converters VLT® 5000 and

VLT® 2800.

(parameter 12-28 Store Data Values and

parameter 12-29 Store Always - stored in, for example,

EEPROM).

WHAT 38295 for details.

to WHAT 38296 for details.

38297 for details.

Parameter 0-01 Language (Modbus register = 10

parameter number)

20 bytes space reserved for parameter in Modbus map.

Parameter 0-02 Motor Speed Unit

20 bytes space reserved for parameter in Modbus map.

Parameter 0-03 Regional Settings

20 bytes space reserved for parameter in Modbus map.

Unit

Settings

–

parameter

access

Dependent on

parameter

access

Dependent on

parameter

access

8 8

Table 8.18 Address/Registers

1) Value written in the Modbus RTU telegram must be 1 or less than the register number. For example, Read Modbus Register 1 by writing value 0

in the telegram.

8.8.9 How to Control the Frequency Converter

This section describes codes which can be used in the function and data elds of a Modbus RTU telegram.

8.8.10 Function Codes Supported by Modbus RTU

Modbus RTU supports use of the following function codes in the function eld of a telegram.

Function Function code (hex)

Read coils 1

Read holding registers 3

Write single coil 5

Write single register 6

Write multiple coils F

Write multiple registers 10

Get comm. event counter B

Report slave ID 11

Table 8.19 Function Codes

RS485 Installation and Set-...

VLT® Micro Drive FC 51

Function Function

code

Diagnostics 8 1 Restart communication.

Table 8.20 Function Codes

Subfunction

code

2 Return diagnostic

10 Clear counters and

11 Return bus message

12 Return bus communi-

13 Return slave error count.

14 Return slave message

Subfunction

diagnostic register.

count.

cation error count.

count.

Code Name Meaning

4 Slave device

failure

Table 8.21 Modbus Exception Codes

An unrecoverable error occurred while the

server (or slave) was attempting to

perform the requested action.

8.9 How to Access Parameters

8.9.1 Parameter Handling

The PNU (parameter number) is translated from the register address contained in the Modbus read or write message. The parameter number is translated to Modbus as (10 x parameter number) decimal. Example: Reading parameter 3-12 Catch up/slow Down Value (16 bit): The holding register 3120 holds the parameters value. A value

8.8.11 Modbus Exception Codes

For a full explanation of the structure of an exception code response, refer to chapter 8.8.5 Function Field.

Code Name Meaning

1 Illegal

function

2 Illegal data

address

3 Illegal data

value

The function code received in the query is

not an allowable action for the server (or

slave). This may be because the function

code is only applicable to newer devices

and was not implemented in the unit

selected. It could also indicate that the

server (or slave) is in the wrong state to

process a request of this type, for example

because it is not congured and is being

asked to return register values.

The data address received in the query is

not an allowable address for the server (or

slave). More specically, the combination

of reference number and transfer length is

invalid. For a controller with 100 registers,

a request with oset 96 and length 4

succeeds, while a request with oset 96

and length 5 generates exception 02.

A value contained in the query data eld

is not an allowable value for server (or

slave). This indicates a fault in the

structure of the remainder of a complex

request, such as that the implied length is

incorrect. It does NOT mean that a data

item submitted for storage in a register

has a value outside the expectation of the

application program, since the Modbus

protocol is unaware of the signicance of

any value of any register.

of 1352 (decimal), means that the parameter is set to

12.52%

Reading parameter 3-14 Preset Relative Reference (32 bit): The holding registers 3410 and 3411 hold the parameters values. A value of 11300 (decimal), means that the parameter is set to 1113.00.

For information on the parameters, size, and conversion index, see chapter 7 Programming.

8.9.2 Storage of Data

The coil 65 decimal determines whether data written to the frequency converter is stored in EEPROM and RAM (coil 65=1), or only in RAM (coil 65=0).

8.9.3 IND (Index)

Some parameters in the frequency converter are array parameters, for example parameter 3-10 Preset Reference. Since the Modbus does not support arrays in the holding registers, the frequency converter has reserved the holding register 9 as pointer to the array. Before reading or writing an array parameter, set the holding register 9. Setting holding register to the value of 2 causes all following read/ write to array parameters to be to the index 2.

8.9.4 Text Blocks

Parameters stored as text strings are accessed in the same way as the other parameters. The maximum text block size is 20 characters. If a read request for a parameter is for more characters than the parameter stores, the response is truncated. If the read request for a parameter is for fewer characters than the parameter stores, the response is space

lled.

RS485 Installation and Set-... Design Guide

8.9.5 Conversion Factor

The dierent attributes for each parameter can be seen in the section on factory settings. Since a parameter value can only be transferred as a whole number, a conversion factor must be used to transfer decimals. Refer to the chapter 7.4 Quick Menu Parameters.

8.9.6 Parameter Values

Standard data types

Standard data types are int 16, int 32, uint 8, uint 16, and uint 32. They are stored as 4x registers (40001–4FFFF). The parameters are read using function 03 hex read holding registers. Parameters are written using the function 6 hex preset single register for 1 register (16 bits), and the function 10 hex preset multiple registers for 2 registers (32 bits). Readable sizes range from 1 register (16 bits) up to 10 registers (20 characters).

Non-standard data types

Non-standard data types are text strings and are stored as 4x registers (40001–4FFFF). The parameters are read using function 03 hex read holding registers and written using function 10 hex preset multiple registers. Readable sizes range from 1 register (2 characters) up to 10 registers (20 characters).

Examples

8.10

The following examples show various Modbus RTU commands. If an error occurs, refer to chapter 8.8.11 Modbus Exception Codes.

Field name Example (hex)

Slave address 01 (frequency converter address)

Function 01 (read coils)

Starting address HI 00

Starting address LO 20 (32 decimals) coil 33

Number of points HI 00

Number of points LO 10 (16 decimals)

Error check (CRC) –

Table 8.22 Query

Response

The coil status in the response telegram is packed as 1 coil per bit of the data 0=OFF. The lsb of the rst data byte contains the coil addressed in the query. The other coils follow toward the high-order end of this byte, and from low order to high order in subsequent bytes. If the returned coil quantity is not a multiple of 8, the remaining bits in the nal data byte are padded with values 0 (toward the high-order end of the byte). The byte count eld species the number of complete bytes of data.

Field name Example (hex)

Slave address 01 (frequency converter address)

Function 01 (read coils)

Byte count 02 (2 bytes of data)

Data (coils 40–33) 07

Data (coils 48–41) 06 (STW=0607hex)

Error check (CRC) –

Table 8.23 Response

eld. Status is indicated as: 1=ON;

8 8

8.10.1 Read Coil Status (01 hex)

Description

This function reads the ON/OFF status of discrete outputs (coils) in the frequency converter. Broadcast is never supported for reads.

Query

The query telegram species the starting coil and quantity of coils to be read. Coil addresses start at 0, that is, coil 33 is addressed as 32.

Example of a request to read coils 33–48 (status word) from slave device 01.

NOTICE

Coils and registers are addressed explicitly with an oset of -1 in Modbus.

For example, coil 33 is addressed as coil 32.

8.10.2 Force/Write Single Coil (05 hex)

Description

This function forces the coil to either ON or OFF. When broadcast, the function forces the same coil references in all attached slaves.

Query

The query telegram species the coil 65 (parameter write control) to be forced. Coil addresses start at 0, that is, coil 65 is addressed as 64. Force data = 00 00 hex (OFF) or FF 00 hex (ON).

RS485 Installation and Set-...

VLT® Micro Drive FC 51

Field name Example (hex)

Slave address 01 (Frequency converter address)

Function 05 (write single coil)

Coil address HI 00

Coil address LO 40 (64 decimal) Coil 65

Force data HI FF

Force data LO 00 (FF 00 = ON)

Error check (CRC) –

Table 8.24 Query

Response

The normal response returns the slave address, function code, starting address, and quantity of coils forced.

Field name Example (hex)

Slave address 01 (frequency converter address)

Function 0F (write multiple coils)

Coil address HI 00

Coil address LO 10 (coil address 17)

Quantity of coils HI 00

Quantity of coils LO 10 (16 coils)

Error check (CRC) –

The normal response is an echo of the query, returned after the coil state has been forced.

Field name Example (hex)

Slave address 01

Function 05

Force data HI FF

Force data LO 00

Quantity of coils HI 00

Quantity of coils LO 01

Error check (CRC) –

Table 8.25 Response

Table 8.27 Response

8.10.4 Read Holding Registers (03 hex)

Description

This function reads the contents of holding registers in the slave.

Query

The query telegram species the starting register and quantity of registers to be read. Register addresses start at 0, that is, registers 1–4 are addressed as 0–3.

Example: Read parameter 3-03 Maximum Reference, register

8.10.3 Force/Write Multiple Coils (0F hex)

03030.

Description

This function forces each coil in a sequence of coils to either on or o. When broadcasting, the function forces the same coil references in all attached slaves.

Query

The query telegram species the coils 17–32 (speed setpoint) to be forced.

NOTICE

Coil addresses start at 0, that is, coil 17 is addressed as

16.

Field name Example (hex)

Slave address 01 (frequency converter address)

Function 0F (write multiple coils)

Coil address HI 00

Coil address LO 10 (coil address 17)

Quantity of coils HI 00

Quantity of coils LO 10 (16 coils)

Byte count 02

Force data HI

(Coils 8–1)

Force data LO

(Coils 16–9)

Error check (CRC) –

00 (reference=2000 hex)

Field name Example (hex)

Slave address 01

Function 03 (Read holding registers)

Starting address HI 0B (Register address 3029)

Starting address LO D5 (Register address 3029)

Number of points HI 00

Number of points LO 02 – (parameter 3-03 Maximum

Reference is 32 bits long, that is, 2

registers)

Error check (CRC) –

Table 8.28 Query

Response

The register data in the response telegram is packed as 2 bytes per register, with the binary contents right justied within each byte. For each register, the 1st byte contains the high-order bits, and the 2nd contains the low-order bits.

Example: hex 000088B8=35.000=35 Hz.

Table 8.26 Query

RS485 Installation and Set-... Design Guide

Field name Example (hex)

Slave address 01

Function 03

Byte count 04

Data HI (register 3030) 00

Data LO (register 3030) 16

Data HI (register 3031) E3

Data LO (register 3031) 60

Error check (CRC) –

Table 8.29 Response

8.10.5 Preset Single Register (06 hex)

Description

This function presets a value into a single holding register.

Query

The query telegram species the register reference to be preset. Register addresses start at 0, that is, register 1 is addressed as 0.

Example: Write to parameter 1-00 Conguration Mode, register 1000.

Field name Example (hex)

Slave address 01

Function 06

Preset data HI 00

Preset data LO 01

Error check (CRC) –

Table 8.30 Query

Response

The normal response is an echo of the query, returned after the register contents have been passed.

Field name Example (hex)

Slave address 01

Function 06

Preset data HI 00

Preset data LO 01

Error check (CRC) –

8.10.6 Preset Multiple Registers (10 hex)

Description

This function presets values into a sequence of holding registers.

Query

The query telegram species the register references to be preset. Register addresses start at 0, that is, register 1 is addressed as 0. Example of a request to preset 2 registers (set parameter 1-24 Motor Current to 738 (7.38 A)):

Field name Example (hex)

Slave address 01

Function 10

Starting address HI 04

Starting address LO 07

Number of registers HI 00

Number of registers LO 02

Byte count 04

Write data HI (Register 4: 1049) 00

Write data LO (Register 4: 1049) 00

Write data HI (Register 4: 1050) 02

Write data LO (Register 4: 1050) E2

Error check (CRC) –

Table 8.32 Query

Response

The normal response returns the slave address, function code, starting address, and quantity of registers preset.

Field name Example (hex)

Slave address 01

Function 10

Starting address HI 04

Starting address LO 19

Number of registers HI 00

Number of registers LO 02

Error check (CRC) –

Table 8.33 Response

8 8

Table 8.31 Response

Speed ref.CTW

Master-follower

130BA274.11

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Bit no.:

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VLT® Micro Drive FC 51

8.11 FC Drive Control Prole

8.11.1 Control Word According to FC Prole

Set parameter 8-30 Protocol to [0] FC. Modbus Holding Register numbers for Input data – CTW and REF – and Output data – STW and MAV – are in Table 8.34:

50000 input data Frequency converter control word register

(CTW)

50010 input data Bus reference register (REF)

50200 output data Frequency converter status word register

(STW)

50210 output data Frequency converter main value register

(MAV)

Table 8.34 Modbus Holding Register Numbers for Input and

Output Data

In VLT® Micro Drive FC 51 after software version 2.32, the input/output data is also available in a lower holding register area:

dened

Bit Bit value=0 Bit value=1

00 Reference value External selection lsb

01 Reference value External selection msb

02 DC brake Ramp

03 Coasting No coasting

04 Quick stop Ramp

05 Hold output

frequency

06 Ramp stop Start

07 No function Reset

08 No function Jog

09 Ramp 1 Ramp 2

10 Data invalid Data valid

11 Relay 01 open Relay 01 active

12 Relay 02 open Relay 02 active

13 Parameter set-up Selection lsb

15 No function Reverse

Table 8.36 Denition of Control Bits

Use ramp

Explanation of the control bits Bits 00/01

Bits 00 and 01 are used to select between the 4 reference values, which are pre-programmed in parameter 3-10 Preset Reference according to the Table 8.37.

02810 input data Frequency converter control word register

(CTW)

02811 input data Bus reference register (REF)

02910 output data Frequency converter status word register

(STW)

02911 output data Frequency converter main value register

(MAV)

Table 8.35 Lower Register Numbers for Input and Output Data

Programmed

reference

value

1 Parameter 3-10 Preset Reference [0] 0 0

2 Parameter 3-10 Preset Reference [1] 0 1

3 Parameter 3-10 Preset Reference [2] 1 0

4 Parameter 3-10 Preset Reference [3] 1 1

Table 8.37 Control Bits

Parameter Bit01Bit

Illustration 8.14 Control Word

NOTICE

Make a selection in parameter 8-56 Preset Reference Select to dene how bit 00/01 gates with the corresponding function on the digital inputs.

Bit 02, DC brake

Bit 02=0 leads to DC brake and stop. Set braking current and duration in parameter 2-01 DC Brake Current and parameter 2-02 DC Braking Time. Bit 02=1 leads to ramping.

Bit 03, Coasting

Bit 03=0: The frequency converter immediately releases the motor, (the output transistors are shut o) and the motor coasts to a standstill. Bit 03=1: The frequency converter starts the motor if the other starting conditions are met.

Make a selection in parameter 8-50 Coasting Select to dene how bit 03 gates with the corresponding function on a digital input.

Output freq.STW

Bit no.:

Follower-master

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

130BA273.11

RS485 Installation and Set-... Design Guide

Bit 04, Quick stop

Bit 04=0: Makes the motor speed ramp down to stop (set in parameter 3-81 Quick Stop Ramp Time).

Bit 05, Hold output frequency

Bit 05=0: The present output frequency (in Hz) freezes. Change the frozen output frequency only with the digital inputs (parameter 5-10 Terminal 18 Digital Input to

parameter 5-13 Terminal 29 Digital Input) programmed to [21] Speed up and [22] Slow down.

NOTICE

If freeze output is active, the frequency converter can only be stopped by the following:

Bit 03 coast stop

•

Bit 02 DC brake

•

Digital input (parameter 5-10 Terminal 18 Digital

•

Input to parameter 5-13 Terminal 29 Digital Input) programmed to [5] DC-brake inverse, [2] Coast inverse, or [3] Coast and reset inverse.

Bit 06, Ramp stop/start

Bit 06=0: Causes a stop and makes the motor speed ramp down to stop via the selected ramp down parameter. Bit 06=1: Allows the frequency converter to start the motor if the other starting conditions are met.

Make a selection in parameter 8-53 Start Select to dene how bit 06 Ramp stop/start communicates with the corresponding function on a digital input.

Bit 07, Reset

Bit 07=0: No reset. Bit 07=1: Resets a trip. Reset is activated on the signal’s leading edge, that is, when changing from logic 0 to logic

Bit 08, Jog

Bit 08=1: The output frequency is determined by parameter 3-11 Jog Speed [Hz].

Bit 09, Selection of ramp 1/2

Bit 09=0: Ramp 1 is active (parameter 3-41 Ramp 1 Ramp Up Time to parameter 3-42 Ramp 1 Ramp Down Time). Bit 09=1: Ramp 2 (parameter 3-51 Ramp 2 Ramp Up Time to parameter 3-52 Ramp 2 Ramp Down Time) is active.

Bit 10, Data not valid/Data valid

Tell the frequency converter whether to use or ignore the control word. Bit 10=0: The control word is ignored. Bit 10=1: The control word is used. This function is relevant because the telegram always contains the control word, regardless of the telegram type. Turn o the control word if not wanting to use it when updating or reading parameters.

Bit 11, Relay 01

Bit 11=0: Relay not activated. Bit 11=1: Relay 01 activated if [36] Control word bit 11 is selected in parameter 5-40 Function Relay.

Bit 12, Relay 02

Bit 12=0: Relay 02 is not activated. Bit 12=1: Relay 02 is activated if [37] Control word bit 12 is selected in parameter 5-40 Function Relay.

Bit 13, Selection of set-up

Use bit 13 to select from the 2 menu set-ups according to Table 8.38.

Set-up Bit 13

1 0

2 1

Table 8.38 Set-up Selection

The function is only possible when [9] Multi Set-up is selected in parameter 0-10 Active Set-up.

Make a selection in parameter 8-55 Set-up Select to dene how bit 13 communicates with the corresponding function on the digital inputs.

Bit 15 Reverse

Bit 15=0: No reversing. Bit 15=1: Reversing. In the default setting, reversing is set to digital in parameter 8-54 Reversing Select. Bit 15 causes reversing only when 1 of the following options is selected: [1] Bus, [2] Logic AND, [3] Logic OR.

8.11.2 Status Word According to FC Prole (STW)

Set parameter 8-30 Protocol to [0] FC.

Illustration 8.15 Status Word

8 8

RS485 Installation and Set-...

VLT® Micro Drive FC 51

Bit Bit=0 Bit=1

00 Control not ready Control ready

01 Frequency converter not

ready

02 Coasting Enable

03 No error Trip

04 No error Error (no trip)

05 Reserved –

06 No error Triplock

07 No warning Warning

09 Local operation Bus control

10 Out of frequency limit Frequency limit OK

11 No operation In operation

12 Frequency converter OK Stopped, auto start

13 Voltage OK Voltage exceeded

14 Torque OK Torque exceeded

15 Timer OK Timer exceeded

Explanation of the status bits

Speed≠reference

Table 8.39 Status Word According to FC Prole

Frequency converter ready

Speed=reference

Bit 00, Control not ready/ready

Bit 00=0: The frequency converter trips. Bit 00=1: The frequency converter controls are ready but the power component does not necessarily receive any supply (if there is 24 V external supply to controls).

Bit 08, Speed reference/speed=reference

Bit 08=0: The motor runs, but the present speed is dierent from the preset speed reference. It might happen when the speed ramps up/down during start/stop. Bit 08=1: The motor speed matches the preset speed reference.

Bit 09, Local operation/bus control

Bit 09=0: [O/Reset] is activated on the control unit or [2] Local in parameter 3-13 Reference Site is selected. It is not

possible to control the frequency converter via serial communication. Bit 09=1: It is possible to control the frequency converter via the eldbus/serial communication.

Bit 10, Out of frequency limit

Bit 10=0: The output frequency has reached the value in

parameter 4-12 Motor Speed Low Limit [Hz] or parameter 4-14 Motor Speed High Limit [Hz].

Bit 10=1: The output frequency is within the dened limits.

Bit 11, No operation/in operation

Bit 11=0: The motor is not running. Bit 11=1: The frequency converter has a start signal without coast.

Bit 12, Frequency converter OK/stopped, auto start

Bit 12=0: There is no temporary overtemperature on the frequency converter. Bit 12=1: The frequency converter stops because of overtemperature but the unit does not trip and resumes operation once the overtemperature normalizes.

Bit 01, Frequency converter ready

Bit 01=0: The frequency converter is not ready.

Bit 13, Voltage OK/limit exceeded

Bit 13=0: There are no voltage warnings.

Bit 01=1: The frequency converter is ready for operation, but the coasting command is active via the digital inputs

Bit 13=1: The DC voltage in the frequency converter’s DC link is too low or too high.

or via serial communication.

Bit 14, Torque OK/limit exceeded

Bit 02, Coast stop

Bit 02=0: The frequency converter releases the motor. Bit 02=1: The frequency converter starts the motor with a start command.

Bit 03, No error/trip

Bit 03=0: The frequency converter is not in fault mode. Bit 03=1: The frequency converter trips. To re-establish operation, press [Reset].

Bit 14=0: The motor current is lower than the current limit selected in parameter 4-18 Current Limit. Bit 14=1: The current limit in parameter 4-18 Current Limit is exceeded.

Bit 15, Timer OK/limit exceeded

Bit 15=0: The timers for motor thermal protection and thermal protection are not exceeded 100%. Bit 15=1: 1 of the timers exceeds 100%.

Bit 04, No error/error (no trip)

Bit 04=0: The frequency converter is not in fault mode. Bit 04=1: The frequency converter shows an error but does not trip.

Bit 05, Not used

Bit 05 is not used in the status word.

Bit 06, No error/triplock

Bit 06=0: The frequency converter is not in fault mode. Bit 06=1: The frequency converter is tripped and locked.

Bit 07, No warning/warning

Bit 07=0: There are no warnings. Bit 07=1: A warning has occurred.

Actual output frequency

STW

Follower-slave

Speed referenceCTW

Master-slave

16bit

130BA276.11

Reverse Forward

Par.3-00 set to

(1) -max- +max

Max reference Max reference

Par.3-00 set to

(0) min-max

Max reference

Forward

Min reference

100%

(4000hex)

-100%

(C000hex)

(0hex)

Par.3-03 0 Par.3-03

Par.3-03

(4000hex)(0hex)

0% 100%

Par.3-02

130BA277.10

RS485 Installation and Set-... Design Guide

8.11.3 Bus Speed Reference Value

Speed reference value is transmitted to the frequency converter in a relative value in %. The value is transmitted in the form of a 16-bit word. The integer value 16384 (4000 hex) corresponds to 100%. Negative gures are formatted using 2’s complement. The actual output frequency (MAV) is scaled in the same way as the bus reference.

The reference and MAV are scaled as follows:

Illustration 8.16 Actual Output Frequency (MAV)

Illustration 8.17 Reference and MAV

8 8

Specications

VLT® Micro Drive FC 51

9 Specications

9.1.1 Mains Supply 1x200–240 V AC

Normal overload 150% for 1 minute

Frequency converter

Typical shaft output [kW]

Typical shaft output [hp] 0.25 0.5 1 2 3

Enclosure protection rating IP20 M1 M1 M1 M2 M3

Output current

Continuous (1x200–240 V AC) [A] 1.2 2.2 4.2 6.8 9.6

Intermittent (1x200–240 V AC) [A] 1.8 3.3 6.3 10.2 14.4

Maximum cable size:

(Mains, motor) [mm2/AWG]

Maximum input current

Continuous (1x200–240 V) [A] 3.3 6.1 11.6 18.7 26.4

Intermittent (1x200–240 V) [A] 4.5 8.3 15.6 26.4 37.0

Maximum mains fuses [A] See chapter 6.6.1 Fuses

Environment

Estimated power loss [W],

Best case/typical

Weight enclosure IP20 [kg] 1.1 1.1 1.1 1.6 3.0

Eciency [%],

Best case/typical

PK18

0.18

12.5/

15.5

95.6/

94.5

PK37

0.37

20.0/

25.0

96.5/

95.6

PK75

0.75

4/10

36.5/

44.0

96.6/

96.0

P1K5

1.5

61.0/

67.0

97.0/

96.7

P2K2

2.2

81.0/

85.1

96.9/

97.1

Table 9.1 Mains Supply 1x200–240 V AC

1) Applies for dimensioning of frequency converter cooling. If the switching frequency is higher than the default setting, the power losses may

increase. LCP and typical control card power consumptions are included. For power loss data according to EN 50598-2, refer to

vltenergyeciency.

2) Eciency measured at nominal current. For energy eciency class, see chapter 9.1.4 Surroundings. For part load losses, see www.danfoss.com/

vltenergyeciency.

www.danfoss.com/

Specications Design Guide

9.1.2 Mains Supply 3x200–240 V AC

Normal overload 150% for 1 minute

Frequency converter

Typical shaft output [kW]

Typical shaft output [hp] 0.33 0.5 1 2 3 5

Enclosure protection rating IP20 M1 M1 M1 M2 M3 M3

Output current

Continuous (3x200–240 V) [A] 1.5 2.2 4.2 6.8 9.6 15.2

Intermittent (3x200–240 V) [A] 2.3 3.3 6.3 10.2 14.4 22.8

Maximum cable size:

(Mains, motor) [mm2/AWG]

Maximum input current

Continuous (3x200–240 V) [A] 2.4 3.5 6.7 10.9 15.4 24.3

Intermittent (3x200–240 V) [A] 3.2 4.6 8.3 14.4 23.4 35.3

Maximum mains fuses [A] See chapter 6.6.1 Fuses

Environment

Estimated power loss [W]

Best case/typical

Weight enclosure IP20 [kg] 1.1 1.1 1.1 1.6 3.0 3.0

Eciency [%]

Best case/typical

PK25

0.25

14.0/

20.0

96.4/

94.9

PK37

0.37

19.0/

24.0

96.7/

95.8

PK75

0.75

31.5/

39.5

97.1/

96.3

4/10

P1K5

1.5

51.0/

57.0

97.4/

97.2

P2K2

2.2

72.0/

77.1

97.2/

97.4

P3K7

115.0/

122.8

97.3/

97.4

3.7

Table 9.2 Mains Supply 3x200–240 V AC

1) Applies for dimensioning of frequency converter cooling. If the switching frequency is higher than the default setting, the power losses may

increase. LCP and typical control card power consumptions are included. For power loss data according to EN 50598-2, refer to

vltenergyeciency.

2) Eciency measured at nominal current. For energy eciency class, see chapter 9.1.4 Surroundings. For part load losses, see www.danfoss.com/

vltenergyeciency.

www.danfoss.com/

9 9

Specications

VLT® Micro Drive FC 51

9.1.3 Mains Supply 3x380–480 V AC

Normal overload 150% for 1 minute

Frequency converter

Typical shaft output [kW]

Typical shaft output [hp] 0.5 1 2 3 4 5.5

Enclosure protection rating IP20 M1 M1 M2 M2 M3 M3

Output current

Continuous (3x380–440 V) [A] 1.2 2.2 3.7 5.3 7.2 9.0

Intermittent (3x380–440 V) [A] 1.8 3.3 5.6 8.0 10.8 13.7

Continuous (3x440–480 V) [A] 1.1 2.1 3.4 4.8 6.3 8.2

Intermittent (3x440–480 V) [A] 1.7 3.2 5.1 7.2 9.5 12.3

Maximum cable size:

(Mains, motor) [mm2/AWG]

Maximum input current

Continuous (3x380–440 V) [A] 1.9 3.5 5.9 8.5 11.5 14.4

Intermittent (3x380–440 V) [A] 2.6 4.7 8.7 12.6 16.8 20.2

Continuous (3x440–480 V) [A] 1.7 3.0 5.1 7.3 9.9 12.4

Intermittent (3x440–480 V) [A] 2.3 4.0 7.5 10.8 14.4 17.5

Maximum mains fuses [A] See chapter 6.6.1 Fuses

Environment

Estimated power loss [W]

Best case/typical

Weight enclosure IP20 [kg] 1.1 1.1 1.6 1.6 3.0 3.0

Eciency [%]

Best case/typical

PK37

0.37

18.5/

25.5

96.8/

95.5

PK75

0.75

28.5/

43.5

97.4/

96.0

P1K5

1.5

41.5/

56.5

98.0/

97.2

4/10

P2K2

2.2

57.5/

81.5

97.9/

97.1

P3K0

3.0

75.0/

101.6

98.0/

97.2

P4K0

4.0

98.5/

133.5

98.0/

97.3

Table 9.3 Mains Supply 3x380–480 V AC

Specications Design Guide

Normal overload 150% for 1 minute

Frequency converter

Typical shaft output [kW]

Typical shaft output [hp] 7.5 10 15 20 25 30

Enclosure protection rating IP20 M3 M3 M4 M4 M5 M5

Output current

Continuous (3x380–440 V) [A] 12.0 15.5 23.0 31.0 37.0 43.0

Intermittent (3x380–440 V) [A] 18.0 23.5 34.5 46.5 55.5 64.5

Continuous (3x440–480 V) [A] 11.0 14.0 21.0 27.0 34.0 40.0

Intermittent (3x440–480 V) [A] 16.5 21.3 31.5 40.5 51.0 60.0

Maximum cable size:

(Mains, motor) [mm2/AWG]

Maximum input current

Continuous (3x380–440 V) [A] 19.2 24.8 33.0 42.0 34.7 41.2

Intermittent (3x380–440 V) [A] 27.4 36.3 47.5 60.0 49.0 57.6

Continuous (3x440–480 V) [A] 16.6 21.4 29.0 36.0 31.5 37.5

Intermittent (3x440–480 V) [A] 23.6 30.1 41.0 52.0 44.0 53.0

Maximum mains fuses [A] See chapter 6.6.1 Fuses

Environment

Estimated power loss [W]

Best case/typical

Weight enclosure IP20 [kg] 3.0 3.0

Eciency [%]

Best case/typical

P5K5

5.5

131.0/

166.8

98.0/

97.5

P7K5

7.5

4/10 16/6

175.0/

217.5

98.0/

97.5

P11K

290.0/

342.0

97.8/

97.4

P15K

387.0/

454.0

97.7/

97.4

P18K

18.5

395.0/

428.0

98.1/

98.0

P22K

467.0/

520.0

98.1/

97.9

9 9

Table 9.4 Mains Supply 3x380–480 V AC

1) Applies for dimensioning of frequency converter cooling. If the switching frequency is higher than the default setting, the power losses may

increase. LCP and typical control card power consumptions are included. For power loss data according to EN 50598-2, refer to www.danfoss.com/

vltenergyeciency.

2) Eciency measured at nominal current. For energy eciency class, see chapter 9.1.4 Surroundings. For part load losses, see www.danfoss.com/

vltenergyeciency.

Specications

Protection and Features

Electronic motor thermal protection against overload.

•

Temperature monitoring of the heat sink ensures that the frequency converter trips if there is overtemperature.

•

The frequency converter is protected against short circuits between motor terminals U, V, W.

•

When a motor phase is missing, the frequency converter trips and issues an alarm.

•

When a mains phase is missing, the frequency converter trips or issues a warning (depending on the load).

•

Monitoring of the DC-link voltage ensures that the frequency converter trips when the DC-link voltage is too low

•

or too high.

The frequency converter is protected against ground faults on motor terminals U, V, W.

•

Mains supply (L1/L, L2, L3/N) Supply voltage 200–240 V ±10% Supply voltage 380–480 V ±10% Supply frequency 50/60 Hz Maximum imbalance temporary between mains phases 3.0% of rated supply voltage True power factor ≥0.4 nominal at rated load Displacement power factor (cosφ) near unity (>0.98) Switching on input supply L1/L, L2, L3/N (power-ups) Maximum 2 times/minute Environment according to EN60664-1 Overvoltage category III/pollution degree 2

The unit is suitable for use on a circuit capable of delivering not more than 100000 RMS symmetrical Amperes, 240/480 V maximum.

Motor output (U, V, W) Output voltage 0–100% of supply voltage

Output frequency 0–200 Hz (VVC+), 0–400 Hz (u/f ) Switching on output Unlimited Ramp times 0.05–3600 s

VLT® Micro Drive FC 51

Cable length and cross-section Maximum motor cable length, shielded/armored (EMC-correct installation) 15 m (49 ft) Maximum motor cable length, unshielded/unarmored 50 m (164 ft)

Maximum cross-section to motor, mains Connection to load sharing/brake (M1, M2, M3) 6.3 mm insulated Faston plugs

Maximum cross-section to load sharing/brake (M4, M5) 16 mm2/6 AWG

Maximum cross-section to control terminals, rigid wire 1.5 mm2/16 AWG (2x0.75 mm2)

Maximum cross-section to control terminals, exible cable 1 mm2/18 AWG

Maximum cross-section to control terminals, cable with enclosed core 0.5 mm2/20 AWG

Minimum cross-section to control terminals 0.25 mm2 (24 AWG)

1) See chapter 9 Specications for more information.

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 >19 V DC Voltage level, logic 1 NPN <14 V DC Maximum voltage on input 28 V DC Input resistance, R Maximum pulse frequency at terminal 33 5000 Hz Minimum pulse frequency at terminal 33 20 Hz

Approximately 4000 Ω

Specications Design Guide

Analog inputs Number of analog inputs 2 Terminal number 53, 60 Voltage mode (terminal 53) Switch S200=OFF(U) Current mode (terminal 53 and 60) Switch S200=ON(I) Voltage level 0–10 V Input resistance, R Maximum voltage 20 V Current level 0/4 to 20 mA (scaleable) Input resistance, R Maximum current 30 mA

Analog output Number of programmable analog outputs 1 Terminal number 42 Current range at analog output 0/4–20 mA Maximum load to common at analog output 500 Ω Maximum voltage at analog output 17 V Accuracy on analog output Maximum error: 0.8% of full scale Scan interval 4 ms Resolution on analog output 8 bit Scan interval 4 ms

Approximately 10000 Ω

Approximately 200 Ω

Control card, RS485 serial communication Terminal number 68 (P, TX+, RX+), 69 (N, TX-, RX-) Terminal number 61 Common for terminals 68 and 69

Control card, 24 V DC output Terminal number 12 Maximum load (M1 and M2) 100 mA Maximum load (M3) 50 mA Maximum load (M4 and M5) 80 mA

Relay output Programmable relay output 1 Relay 01 terminal number 01-03 (break), 01-02 (make)

Maximum terminal load (AC-1)1) on 01-02 (NO) (Resistive load) 250 V AC, 2 A

Maximum terminal load (AC-15)1) on 01-02 (NO) (Inductive load @ cosφ 0.4) 250 V AC, 0.2 A

Maximum terminal load (DC-1)1) on 01-02 (NO) (Resistive load) 30 V DC, 2 A

Maximum terminal load (DC-13)1) on 01-02 (NO) (Inductive load) 24 V DC, 0.1 A

Maximum terminal load (AC-1)1) on 01-03 (NC) (Resistive load) 250 V AC, 2 A

Maximum terminal load (AC-15)1) on 01-03 (NC) (Inductive load @ cosφ 0.4) 250 V AC, 0.2 A

Maximum terminal load (DC-1)1) on 01-03 (NC) (Resistive load) 30 V DC, 2 A Minimum terminal load on 01-03 (NC), 01-02 (NO) 24 V DC 10 mA, 24 V AC 20 mA Environment according to EN 60664-1 Overvoltage category III/pollution degree 2

1) IEC 60947 part 4 and 5

9 9

Control card, 10 V DC output Terminal number 50 Output voltage 10.5 V ±0.5 V Maximum load 25 mA

NOTICE

All inputs, outputs, circuits, DC supplies, and relay contacts are galvanically isolated from the supply voltage (PELV) and other high voltage terminals.

Specications

Surroundings Enclosure protection rating IP20 Enclosure kit available IP21, TYPE 1 Vibration test 1.0 g Maximum relative humidity 5%–95 % (IEC 60721-3-3; Class 3K3 (non-condensing) during operation Aggressive environment (IEC 60721-3-3), coated class 3C3 Test method according to IEC 60068-2-43 H2S (10 days)

Ambient temperature Minimum ambient temperature during full-scale operation 0 °C (32 °F) Minimum ambient temperature at reduced performance -10 °C (14 °F) Temperature during storage/transport -25 to +65/70 °C

Maximum altitude above sea level without derating

Maximum altitude above sea level with derating Safety standards EN/IEC 61800-5-1, UL 508C EMC standards, Emission EN 61800-3, EN 61000-6-3/4, EN 55011, IEC 61800-3

EMC standards, Immunity Energy eciency class IE2

1) Refer to chapter 4.2 Special Conditions for:

Derating for high ambient temperature.

•

Derating for high altitude.

•

2) Determined according to EN 50598-2 at:

Rated load.

•

90% rated frequency.

•

Switching frequency factory setting.

•

Switching pattern factory setting.

•

VLT® Micro Drive FC 51

Maximum 40 °C (104 °F)

1000 m (3280 ft)

3000 m (9842 ft)

EN 61800-3, EN 61000-6-1/2, EN 61000-4-2, EN 61000-4-3,

EN 61000-4-4, EN 61000-4-5, EN 61000-4-6

Index Design Guide

Index

Abbreviations........................................................................................... 5

Active set-up.......................................................................................... 57

Aggressive environment.................................................................... 11

Air humidity............................................................................................ 11

Aluminum conductors........................................................................ 46

Ambient temperature......................................................................... 90

Analog input................................................................................. 6, 7, 89

Automatic adaptations to ensure performance........................ 37

Better control......................................................................................... 15

Break-away torque.................................................................................. 6

Building management system, BMS.............................................. 13

Bus termination..................................................................................... 52

Cable

clamp.................................................................................................... 49

length and cross-section........................................................ 46, 88

Control cable..................................................................................... 51

Equalizing cable............................................................................... 49

Grounding, shielded/armored control cables....................... 49

Motor cable................................................................................. 21, 46

Shielding of cables.......................................................................... 46

CE conformity and labeling.............................................................. 10

Clearance................................................................................................. 42

Coasting........................................................................................ 6, 80, 82

Comparison, energy saving.............................................................. 13

Control structure closed loop.......................................................... 19

Control structure open loop............................................................. 18

Control terminals.................................................................................. 52

Control word.......................................................................................... 80

Controlling fan....................................................................................... 12

Controlling pump................................................................................. 12

Covered, what is.................................................................................... 11

Current

loops..................................................................................................... 21

Leakage current................................................................................ 21

Rated current..................................................................................... 22

Data type, supported.......................................................................... 70

DC brake.................................................................................................. 80

Decoupling plate.................................................................................. 28

Denition............................................................................................ 6, 22

Derating

for low air pressure.......................................................................... 37

Digital input............................................................................................ 88

Discharge time......................................................................................... 9

Display...................................................................................................... 57

Disposal.................................................................................................... 10

Drive congurator................................................................................ 38

Edit set-up............................................................................................... 57

Electrical installation.................................................................... 46, 51

EMC

EMC................................................................................................ 21, 22

Directive (89/336/EEC)............................................................ 10, 11

plan....................................................................................................... 22

precautions........................................................................................ 66

test results (emission)..................................................................... 22

EMC-correct electrical installation............................................. 46

Emission requirements........................................................... 21, 22

Emissions............................................................................................ 21

Immunity requirements................................................................ 21

Use of EMC-correct cables............................................................ 48

Energy eciency.............................................................. 84, 85, 86, 87

Energy eciency class........................................................................ 90

Energy saving.................................................................................. 12, 14

Energy saving example...................................................................... 13

Environment

Industrial............................................................................................. 22

Residential.......................................................................................... 22

ETR............................................................................................................. 54

Extreme running condition............................................................... 24

FC prole

FC prole............................................................................................. 80

FC with Modbus RTU...................................................................... 67

Protocol overview............................................................................ 66

Final set-up and test............................................................................ 52

Freeze output........................................................................................... 6

Frequency converter hardware set-up......................................... 65

Function code........................................................................................ 75

Galvanic isolation................................................................................. 23

Ground leakage current.............................................................. 24, 56

Ground leakage protection.............................................................. 21

Grounding............................................................................................... 49

Index

VLT® Micro Drive FC 51

Harmonics

distortion............................................................................................ 21

emission requirements.................................................................. 23

High voltage............................................................................................. 9

High-voltage test.................................................................................. 56

Hold output frequency....................................................................... 81

Immunity requirement....................................................................... 23

IND............................................................................................................. 70

Index (IND).............................................................................................. 70

Indicator lights....................................................................................... 58

Initialize the frequency converter.................................................. 63

Intermediate circuit...................................................................... 24, 37

IP21/TYPE 1 enclosure kit.................................................................. 28

Jog......................................................................................................... 6, 81

Motor

Automatic motor tuning........................................................ 53, 59

connection......................................................................................... 45

current.................................................................................................. 59

direction.............................................................................................. 58

frequency............................................................................................ 59

nameplate data................................................................................. 52

nominal speed.................................................................................. 59

overload protection........................................................................ 88

phase.................................................................................................... 24

power................................................................................................... 59

protection........................................................................................... 54

thermal protection................................................................... 24, 82

voltage................................................................................................. 59

Motor-generated overvoltage.................................................... 24

Parallel connection of motors..................................................... 54

Rated motor speed............................................................................ 6

Short circuit (motor phase-phase)............................................. 24

Unintended motor rotation......................................................... 10

Nameplate data..................................................................................... 52

Navigation keys.............................................................................. 26, 58

Network conguration....................................................................... 72

Network connection............................................................................ 65

LCP............................................................................................. 6, 7, 18, 26

LCP 11....................................................................................................... 57

LCP 12....................................................................................................... 57

LCP copy.................................................................................................. 63

Leakage current...................................................................... 10, 24, 56

Load sharing............................................................................................. 9

Local (Hand On) and remote (Auto On) control........................ 18

Low Voltage Directive (73/23/EEC)................................................ 10

Machinery directive (98/37/EEC).................................................... 10

Main Menu................................................................................ 26, 58, 63

Mains drop-out...................................................................................... 24

Mains supply (L1/L, L2, L3/N)........................................................... 88

Mains supply 1x200–240 V AC......................................................... 84

Mains supply 3x200–240 V AC......................................................... 85

Mains supply 3x380–480 V AC......................................................... 86

Maximum reference...................................................................... 60, 61

Minimum reference...................................................................... 60, 61

Modbus communication................................................................... 66

Modbus exception code.................................................................... 76

Modbus RTU........................................................................................... 72

Modbus RTU overview....................................................................... 71

Moment of inertia................................................................................ 24

Operation keys............................................................................... 26, 58

Options and accessories.................................................................... 26

Overcurrent protection...................................................................... 44

Parameter number............................................................................... 57

Payback period...................................................................................... 14

PC software tools.................................................................................. 55

PELV, protective extra low voltage................................................. 23

PLC............................................................................................................. 49

Power circuit overview....................................................................... 50

Power factor.............................................................................................. 8

Protection........................................................................... 11, 23, 44, 88

Public supply network........................................................................ 23

Quick menu.............................................................................. 26, 58, 59

Quick transfer......................................................................................... 63

Ramp 1 ramp-down time.................................................................. 60

Ramp 1 ramp-up time......................................................................... 60

RCD............................................................................................................... 7

Read holding registers (03 hex)....................................................... 78

Index Design Guide

Read-out and programming of indexed parameters.............. 63

Readout mode....................................................................................... 58

Reference handling.............................................................................. 20

References................................................................................................. 6

Relay output........................................................................................... 89

Residual current device...................................................................... 49

RS485

RS485............................................................................................. 65, 67

bus connection................................................................................. 55

installation and set-up................................................................... 65

S200 Switches 1–4................................................................................ 52

Safety........................................................................................................ 10

Safety ground connection................................................................. 56

Save drive settings............................................................................... 55

Save frequency converter settings................................................. 55

Serial communication.................................................................. 49, 58

Serial communication port.................................................................. 6

Set speed limit and ramp time........................................................ 53

Set-up number...................................................................................... 57

Shock......................................................................................................... 12

Soft starter............................................................................................... 15

Software version...................................................................................... 5

Star/Delta starter.................................................................................. 15

Status........................................................................................................ 26

Status menu........................................................................................... 58

Status word............................................................................................. 81

Successful AMT...................................................................................... 53

Switches................................................................................................... 52

Switching frequency........................................................................... 46

Switching on the output.................................................................... 24

Variable control, ow and pressure................................................ 15

Varying ow (1 year)............................................................................ 14

Vibration.................................................................................................. 12

Voltage level........................................................................................... 88

VVC............................................................................................................... 8

Windmilling............................................................................................ 10

Telegram length (LGE)......................................................................... 68

Thermistor................................................................................................. 7

Type 1 (NEMA)........................................................................................ 28

Type code string.................................................................................... 38

UL compliance....................................................................................... 44

Unintended start..................................................................................... 9

Unit............................................................................................................ 57

Unsuccessful AMT................................................................................ 53

Value.......................................................................................................... 57

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Danfoss A/S Ulsnaes 1 DK-6300 Graasten vlt-drives.danfoss.com

132R0059 MG02K402 01/2016

*MG02K402*

Danfoss FC 202 Design guide

Specifications and Main Features

Frequently Asked Questions

User Manual