Danfoss VLT HVAC Drive FC 102 User manual

ENGINEERING TOMORROW
Installation Guide
VLT®Parallel Drive Modules
250–1200 kW
vlt-drives.danfoss.com

Contents
1 Introduction 4
1.1 Purpose of the Manual 4
1.2 Additional Resources 4
1.3 Document and Software Version 4
1.4 Approvals and Certications 4
1.5 Disposal 4
2 Safety 5
2.1 Safety Symbols 5
2.2 Qualied Personnel 5
2.3 Safety Precautions 5
3 Product Overview 7
3.1 Intended Use 7
3.2 Drive Modules 8
3.3 Control Shelf 9
3.4 Wire Harness 10
3.5 DC Fuses 10
4 Mechanical Installation 11
4.1 Receiving and Unpacking the Unit 11
4.1.1 Items Supplied 11
4.1.2 Lifting the Unit 12
4.1.3 Storage 12
4.2 Requirements 14
4.2.1 Environmental 14
4.3 Installing the Drive Modules 16
4.4 Installing the Control Shelf 18
5 Electrical Installation 19
5.1 Safety Instructions 19
5.2 Electrical Requirements for Certications and Approvals 20
5.3 Wiring Diagram 21
5.4 Fuses 22
5.5 Electrical Kit Installation 24
5.6 DC Bus Fuse Installation 24
5.7 Motor Connections 24
5.7.3 Motor Terminal Connections 26
5.7.3.1 Motor Cable 26
5.7.3.2 Motor Terminal Connections in 2-Drive Module Systems 27
Contents Installation Guide
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5.7.3.3 Motor Terminal Connections in 4-Drive Module Systems 27
5.8 Mains Connections 28
5.8.1 AC Mains Terminal Connections 28
5.8.1.1 Mains Terminal Connections in 2-Drive Module Systems 28
5.8.1.2 Mains Terminal Connections in 4-Drive Module Systems 29
5.8.2 12-Pulse Disconnector Conguration 29
5.8.3 Discharge Resistors 30
5.9 Control Shelf Installation 31
5.10 Control Wiring Connections 31
5.10.1 Control Cable Routing 32
5.10.2 Control Wiring 33
5.10.2.1 Control Terminal Types 33
5.10.2.2 Wiring to Control Terminals 35
5.10.2.3 Enabling Motor Operation (Terminal 27) 35
5.10.2.4 Voltage/Current Input Selection (Switches) 35
5.10.2.5 RS485 Serial Communication 36
5.10.3 Safe Torque O (STO) 36
5.11 Relay Output 36
5.12 EMC Recommendations 37
6 Initial Start-up 41
6.1 Pre-start Check List 41
6.2 Safety Instructions 42
6.3 Applying Power 42
6.4 Conguring the Drive System 43
6.5 Testing the Motor Operation 44
7 Specications 45
7.1 Power-dependent Specications 45
7.2 Mains Supply to Drive Module 59
7.3 Motor Output and Motor Data 59
7.4 12-Pulse Transformer Specications 59
7.5 Ambient Conditions for Drive Modules 59
7.6 Cable Specications 60
7.7 Control Input/Output and Control Data 60
7.8 Kit Dimensions 64
7.9 Fastener Tightening Torques 66
7.9.1 Tightening Torques for Terminals 66
8 Appendix 67
8.1 Disclaimer 67
Contents VLT®Parallel Drive Modules
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8.2 Symbols, Abbreviations, and Conventions 67
8.3 Block Diagrams 68
Index 79
Contents Installation Guide
MG37K302 Danfoss A/S © 08/2017 All rights reserved. 3

1 Introduction
1.1 Purpose of the Manual
This manual provides requirements for mechanical and
electrical installation of the VLT®Parallel Drive Modules
basic kit. Separate installation instructions for optional
components - bus bars and back-channel cooling - are
provided with those kits.
This guide includes information on:
•Wiring of mains and motor connections.
•Wiring of control and serial communications.
•Control terminal functions.
•Detailed tests that must be performed before
start-up.
•Initial programming to verify proper functioning
of the drive system.
The installation guide is intended for use by qualied
personnel.
To install the drive modules and paralleling kit safely and
professionally, read and follow the installation guide. Pay
particular attention to the safety instructions and general
warnings. Always keep this installation guide with the
panel containing the VLT®Parallel Drive Modules
components.
VLT®is a registered trademark.
1.2 Additional Resources
Other resources are available to understand functions and
programming of the VLT®Parallel Drive Modules.
•The VLT
®
Parallel Drive Modules Design Guide
contains detailed information about the
capabilities and functionality of motor control
systems using these drive modules, and provides
guidance for designing this type of system.
•The VLT
®
Parallel Drive Modules User Guide
contains detailed procedures for start-up, basic
operational programming, and functional testing.
Additional information describes the user
interface, application examples, troubleshooting,
and specications.
•Refer to the Programming Guide applicable to the
particular series of VLT®Parallel Drive Modules
used in creating the drive system. The
programming guide describes in greater detail
how to work with parameters and provides
application examples.
•The VLT
®
FC Series, D-frame Service Manual
contains detailed service information, including
information applicable to the VLT®Parallel Drive
Modules.
•The VLT
®
Parallel Drive Modules DC Fuses Instal-
lation Instructions contain detailed information
about installing the DC fuses.
•The VLT
®
Parallel Drive Modules Bus Bar Kit Instal-
lation Instructions contain detailed information
about installing the bus bar kit.
•The VLT
®
Parallel Drive Modules Duct Kit Instal-
lation Instructions contain detailed information
about installing the duct kit.
Refer to other supplemental publications and manuals,
available from Danfoss. See drives.danfoss.com/knowledge-
center/technical-documentation/ for listings.
1.3 Document and Software Version
This manual is regularly reviewed and updated. All
suggestions for improvement are welcome. Table 1.1 shows
the document version and the corresponding software
version.
Edition Remarks Software
version
MG37K3xx Added 230 V external
power supply content
FC 102 (5.0x),
FC 202 (3.0x),
FC 302 (7.6x)
Table 1.1 Document and Software Version
1.4 Approvals and Certications
Table 1.2 Approvals and Certications
1.5 Disposal
Do not dispose of equipment containing
electrical components together with
domestic waste.
Collect it separately in accordance with
local and currently valid legislation.
Introduction VLT®Parallel Drive Modules
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11

2 Safety
2.1 Safety Symbols
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.
2.2 Qualied Personnel
Correct and reliable transport, storage, and installation are
required for the trouble-free and safe operation of the
VLT®Parallel Drive Modules. Only qualied personnel are
allowed to install this equipment.
Qualied personnel are dened as trained sta, who are
authorized to install equipment, systems, and circuits in
accordance with pertinent laws and regulations. Also, the
personnel must be familiar with the instructions and safety
measures described in this manual.
2.3 Safety Precautions
WARNING
HIGH VOLTAGE
The drive system contains high voltage when connected
to AC mains input. Failure to ensure that only qualied
personnel install the drive system can result in death or
serious injury.
•Only qualied personnel are allowed to install the
drive system.
CAUTION
POTENTIAL HAZARD IN THE EVENT OF
INTERNAL FAILURE
There is a risk of personal injury when the drive modules
are not properly closed.
•Before applying power, ensure that all safety
covers are in place and securely fastened.
WARNING
UNINTENDED START
When the drive system is connected to AC mains, the
motor can 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
via an external switch, a eldbus command, an input
reference signal from the LCP, a cleared fault condition,
or remote operation using MCT 10 Set-up Software.
To prevent unintended motor start:
•Disconnect the drive system from AC mains.
•Press [O/Reset] on the LCP, before
programming parameters.
•The drive system, motor, and any driven
equipment must be fully wired and assembled
when the drive is connected to AC mains.
WARNING
DISCHARGE TIME
The drive module contains DC-link capacitors. Once
mains power has been applied to the drive, these
capacitors can remain charged even after the power has
been removed. High voltage can be present even when
the warning indicator lights are o. Failure to wait 20
minutes after power has been removed before
performing service or repair work can result in death or
serious injury.
1. Stop the motor.
2. Disconnect AC mains and remote DC-link
supplies, including battery back-ups, UPS, and
DC-link connections to other drives.
3. Disconnect or lock the PM motor.
4. Wait 20 minutes for the capacitors to discharge
fully before performing any service or repair
work.
WARNING
UNINTENDED MOTOR ROTATION
WINDMILLING
Unintended rotation of permanent magnet motors
creates voltage and can charge the capacitors in the
drive system, resulting in death, serious injury, or
equipment damage.
•Ensure that permanent magnet motors are
blocked to prevent unintended rotation.
Safety Installation Guide
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22

WARNING
LEAKAGE CURRENT HAZARD (>3.5 mA)
Leakage currents exceed 3.5 mA. Failure to ground the
drive system properly can result in death or serious
injury. Follow national and local codes regarding
protective earthing of equipment with a leakage current
>3.5 mA. Frequency converter technology implies high
frequency switching at high power. This switching
generates a leakage current in the ground connection. A
fault current in the drive system at the output power
terminals sometimes contain a DC component, which can
charge the lter capacitors and cause a transient ground
current. The ground leakage current depends on various
system congurations including RFI ltering, shielded
motor cables, and drive system power.
If the leakage current exceeds 3.5 mA, EN/IEC 61800-5-1
(Power Drive System Product Standard) requires special
care.
Grounding must be reinforced in 1 of the following ways:
•Ensure the correct grounding of the equipment
by a certied electrical installer.
•Ground wire of at least 10 mm2(6 AWG).
•Two separate ground wires, both complying
with the dimensioning rules.
See EN 60364-5-54 § 543.7 for further information.
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 the installation.
•Ensure that electrical work conforms to national
and local electrical codes.
•Follow the procedures in this document.
WARNING
DISCONNECT POWER BEFORE SERVICING
Sometimes during installation, AC mains power is
applied but then must be disconnected to change the
line connections. Failure to follow these steps can result
in death or serious injury.
•Disconnect the frequency converters from the
AC mains, 230 V supply, and motor lines.
•After the lines have been disconnected, wait 20
minutes for the capacitors to discharge.
WARNING
HEAVY LOAD
Unbalanced loads can fall and loads can tip over. Failure
to take proper lifting precautions increases risk of death,
serious injury, or equipment damage.
•Never walk under suspended loads.
•To guard against injury, wear personal
protective equipment such as gloves, safety
glasses, and safety shoes.
•Be sure to use lifting devices with the
appropriate weight rating. The lifting bar must
be able to handle the weight of the load.
•The load’s center of gravity may be in an
unexpected location. Failure to locate the center
of gravity correctly, and position the load
accordingly before lifting the load, can cause
the unit to fall over or tilt unexpectedly during
lifting and transport.
•The angle from the top of the drive module to
the lifting cables has an impact on the
maximum load force on the cable. This angle
must be 65°or greater. Attach and dimension
the lifting cables properly.
Safety VLT®Parallel Drive Modules
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3 Product Overview
3.1 Intended Use
A frequency converter is an electronic motor controller that uses 1 or more drive modules to convert AC mains input into a
variable AC waveform output. The frequency and voltage of the output are regulated to control the motor speed or torque.
The frequency converter varies the motor speed based on system feedback, such as position sensors on a conveyor belt.
The frequency converter also regulates the motor in response to remote commands from external controllers.
The VLT®Parallel Drive Modules basic kit described in this guide is UL 508 C compliant. The kit is used to create drive
systems of 2 or 4 drive modules. These drive modules are based on the D4h frequency converter and can provide a greater
power range in a smaller enclosure. The basic kit is designed to allow the exibility to either order components through
Danfoss or fabricate custom components.
The basic kit contains the following components:
•Drive modules
•Control shelf
•Wire harnesses
-Ribbon cable with 44-pin connector (on both ends of the cable)
-Relay cable with 16-pin connector (on 1 end of the cable)
-DC fuse microswitch cable with 2-pin connectors (on 1 end of the cable)
•DC fuses
•Microswitches
Other components, such as bus bar kits and back-channel cooling duct kits, are available as options to customize the drive
system.
NOTICE
EXTERNAL 230 V SUPPLY
An external 230 V supply is needed to power the SMPS
(switch mode power supply) and any cabinet fans.
Product Overview Installation Guide
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33

3.2 Drive Modules
Each drive module has an IP00 protection rating. Either 2 or 4 drive modules can be connected in parallel to create a drive
system, based on power requirements.
130BE561.11
2
3
4
1
5
6
7
8
9
12
13
11
10
1 DC-link terminal and DC fuse 8 Ground terminals
2 MDCIC plug 9 Top fan
3 Microswitch to DC fuse 10 Drive module label. See Illustration 4.2.
4 Relays 1 and 2 11 Motor output terminals (inside the unit)
5 Brake fault jumper and connector 12 Heat sink and heat sink fan
6 Mains input terminals (inside the unit) 13 Ground plate
7 Terminal cover – –
Illustration 3.1 Drive Module Overview
Product Overview VLT®Parallel Drive Modules
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33

3.3 Control Shelf
The control shelf contains the LCP, MDCIC, and control card. The LCP provides access to the system parameters. The MDCIC
is connected to each of the drive modules via a ribbon cable and communicates to the control card. The control card
controls the operation of the drive modules.
130BE597.11
1
2
3
5
7
8
4
9
11
6
10
12
1 LCP cradle 7 MDCIC card
2 Control card (underneath cover) 8 Control shelf
3 Control terminal blocks 9 Switch mode power supply (SMPS). Note that an external 230 V
supply is needed to power the SMPS.
4 Top-level drive system label. See Illustration 4.1. 10 Pilz relay
5 44-pin cables from MDCIC board to drive modules 11 DIN rail
6 Ferrite core 12 Terminal block mounted on DIN rail
Illustration 3.2 Control Shelf
Product Overview Installation Guide
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33

3.4 Wire Harness
The VLT®Parallel Drive Modules basic kit contains the following wire harnesses:
•Ribbon cable with 44-pin connector (on both ends of the cable)
•Relay cable with 16-pin connector (on 1 end of the cable)
•DC fuse microswitch cable with 2-pin connectors (on 1 end of the cable)
3.5 DC Fuses
The VLT®Parallel Drive Modules kit contains 2 DC fuses per drive module. These fuses on the supply side ensure that any
damage is contained to inside the drive modules.
NOTICE
Use of fuses on the supply side is mandatory for IEC 60364 (CE) compliant installations.
130BE750.10
1
2
1 DC fuse 2 Microswitch connector
Illustration 3.3 DC Fuse and Microswitch Connector
Product Overview VLT®Parallel Drive Modules
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33

4 Mechanical Installation
4.1 Receiving and Unpacking the Unit
4.1.1 Items Supplied
•Make sure that the items supplied and the
information on the labels correspond to the
order.
-Top-level drive system. This label is
found on the control shelf, lower right
side of the LCP. See Illustration 3.2.
-Drive module. This label is found inside
the drive module enclosure, on the right
side panel. See Illustration 3.1.
•Visually check the packaging and the VLT®
Parallel Drive Modules components for damage
caused by inappropriate handling during
shipment. File any claim for damage with the
carrier. Retain damaged parts, in case clarication
is needed.
130BE710.12
OUT: 3x0-Vin 0-590Hz 1260/1160 A
IN: 3x380-500V 50/60Hz 1227/1129 A
710 kW / 1000 HP, High Overload
OUT: 3x0-Vin 0-590Hz 1460/1380 A
IN: 3x380-500V 50/60Hz 1422/1344 A
800 kW / 1200 HP, Normal Overload
VLT
T/C: FC-302N710T5E00P2BGC7XXSXXXXAXBXCXXXXDX
P/N: 134X4109 S/N:
RAutomationDrive
www.danfoss.com
1
2
3
4
5
6
ASSEMBLED IN USA
CAUTION - ATTENTION:
Stored charge, wait 20 min.
Charge residuelle, attendez 20
See manual for special condition / prefuses
Voir manuel de conditions speciales / fusibles
WARNING - AVERTISSEMENT:
`
`
Tamb. 45
˚
C/113
˚
F at Full Output Current
CHASSIS (OPEN TYPE) / IP00
SCCR 100 kA at UL Voltage range 380-500 V
Listed 36U0 E70524 IND. CONT. EQ.
UL Voltage range 380-500 V
Max. Tamb. 55
˚
C/131
˚
F w/ Output Current Derating
123456H123
1 Type code
2 Code number
3 Power rating
4 Input voltage, frequency, and current
5 Output voltage, frequency, and current
6 Discharge time
Illustration 4.1 Top-level Drive System Label (Example)
130BE711.14
Intended use - The Individual Base Drive
Modules are intended for use in Parallel Drive
Module system only. Specic electrical
ratings are not applicable. Name plate of
Parallel Drive Module system should
be referred for actual drive ratings.
VLT
ASSEMBLED IN USA
T/C: FC-BDMN250T5E00H2SXC7XXSXXXXAXBXCXXXXDX
P/N: 178N0025 S/N: 123456H123
CAUTION - ATTENTION:
Stored charge, wait 20 min.
Charge residuelle, attendez 20
See manual for special condition / prefuses
Voir manuel de conditions speciales / fusibles
WARNING - AVERTISSEMENT:
R
AutomationDrive
www.danfoss.com
`
`
CHASSIS (OPEN TYPE) / IP00
SCCR 100 kA at UL Voltage range 380-500 V
Listed 36U0 E70524 IND. CONT. EQ.
1
2
3
4
5
UL Voltage range 380-500 V
1 Type code
2 Code number
3 Intended use disclaimer
4 Discharge time
5 Serial number
Illustration 4.2 Drive Module Label (Example)
NOTICE
LOSS OF WARRANTY
Removing the labels from the VLT®Parallel Drive
Modules can result in loss of warranty.
Mechanical Installation Installation Guide
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44

Receiving and unloading
•I-beam and hooks rated to lift a drive module having a weight of 125 kg (275 lb), with the necessary safety
margins.
•Crane or other lifting aid rated to lift the minimum weight specied in the documentation package supplied with
the drive module.
•Crowbar to disassemble the wooden shipping container.
Installation
•Drill with 10 mm or 12 mm drill bits.
•Tape measurer.
•Screwdriver.
•Wrench with relevant metric sockets (7–17 mm).
•Wrench extensions.
•Torx T50 tool.
Cabinet construction
Acquire the tools necessary for assembly of the panel - according to the design plans and established practices.
4.1.2 Lifting the Unit
For measurements and center of gravity, see chapter 7.8 Kit Dimensions.
•Ensure that the lifting device is suitable for the task.
•Move the unit using a hoist, crane, or forklift with the appropriate rating.
•Always use the dedicated lifting eye bolts. See Illustration 4.3.
CAUTION
HEAVY LOAD
Unbalanced loads can fall and loads can tip over. Failure to take proper lifting precautions increases risk of death,
serious injury, or equipment damage.
•Never walk under suspended loads.
•To guard against injury, wear personal protective equipment such as gloves, safety glasses, and safety shoes.
•Be sure to use lifting devices with the appropriate weight rating. The lifting bar must be able to handle the
weight of the load.
•The load’s center of gravity may be in an unexpected location. Failure to locate the center of gravity correctly
and position the load accordingly before lifting the load can cause the unit to fall over or tilt unexpectedly
during lifting and transport.
•The angle from the top of the drive module to the lifting cables has an impact on the maximum load force on
the cable. This angle must be 65°or greater. Refer to Illustration 4.3. Attach and dimension the lifting cables
properly.
4.1.3 Storage
Store the kit in a dry location. Keep the equipment sealed in its packaging until installation. Refer to chapter 7.5 Ambient
Conditions for Drive Modules for recommended ambient conditions.
Mechanical Installation VLT®Parallel Drive Modules
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130BE566.10
65°min
Illustration 4.3 Lifting the Drive Module
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4.2 Requirements
This section describes the minimum recommended
requirements for mechanical installation. For UL and CE
requirements, see chapter 5.2 Electrical Requirements for
Certications and Approvals.
4.2.1 Environmental
Refer to for information on required operating
temperature, humidity, and other environmental
conditions.
4.2.2 Cabinet
The kit consists of either 2 or 4 drive modules, depending
on the power rating. The cabinets have to meet the
following minimum requirements:
Width [mm (in)] 2-drive: 800 (31.5), 4-drive: 1600 (63)
Depth [mm (in)] 600 (23.6)
Height [mm (in)] 2000 (78.7)1)
Weight capacity
[kg (lb)]
2-drive: 450 (992), 4-drive: 910 (2006)
Ventilation openings See chapter 4.2.5 Cooling and Airow
Requirements.
Table 4.1 Cabinet Requirements
1) Required if Danfoss busbar or cooling kits are used.
NOTICE
EXTERNAL 230 V SUPPLY
An external 230 V supply is required for the SMPS
(switch mode power supply). Danfoss recommends using
a 6 A, 10 A, or 16 A slow-blow fuse when installing the
external supply.
4.2.3 Busbars
If the Danfoss busbar kit is not used, see Table 4.2 for the
cross-section measurements that are required when
creating customized busbars. For terminal dimensions, refer
to chapter 7.8.2 Terminal Dimensions and chapter 7.8.3 DC
Bus Dimensions.
Description Width [mm (in)] Thickness [mm (in)]
AC motor 143.6 (5.7) 6.4 (0.25)
AC mains 143.6 (5.7) 6.4 (0.25)
DC bus 76.2 (3.0) 12.7 (0.50)
Table 4.2 Cross-section Measurements for Customized Busbars
NOTICE
Align busbars vertically to provide maximum airow.
4.2.4 Thermal Considerations
For heat dissipation values, refer to chapter 7.1 Power-
dependent Specications. The following heat sources must
be considered when determining cooling requirements:
•Ambient temperature outside enclosure.
•Filters (for example, sine-wave and RF).
•Fuses.
•Control components.
For required cooling air, refer to chapter 4.2.5 Cooling and
Airow Requirements.
Mechanical Installation VLT®Parallel Drive Modules
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4.2.5 Cooling and Airow Requirements
The recommendations provided in this section are necessary for eective cooling of the drive modules within the panel
enclosure. Each drive module contains a heat sink fan and a mixing fan. Typical enclosure designs utilize door fans along
with the drive module fans to remove waste heat from the enclosure.
Danfoss provides several back-channel cooling kits as options. These kits remove 85% of the waste heat from the enclosure,
reducing the need for large door fans.
NOTICE
Make sure that the total ow of the cabinet fans meets the recommended airow.
Drive module cooling fans
The drive module is equipped with a heat sink fan, which provides the required ow rate of 840 m3/h (500 cfm) across the
heat sink. Also, there is a cooling fan mounted on the top of the unit, and a small 24 V DC mixing fan mounted under the
input plate that operates any time the drive module is powered on.
In each drive module, the power card provides DC voltage to power the fans. The mixing fan is powered by 24 V DC from
the main switch mode power supply. The heat sink fan and the top fan are powered by 48 V DC from a dedicated switch
mode power supply on the power card. Each fan has a tachometer feedback to the control card to conrm that the fan is
operating correctly. On/o and speed control of the fans help reduce unnecessary acoustical noise and extend the life of the
fans.
Cabinet fans
When the back-channel option is not used, fans mounted in the cabinet must remove all the heat generated inside the
enclosure.
For each enclosure housing 2 drive module, the cabinet fan ow recommendation is as follows:
•When back-channel cooling is used, 680 m3/h (400 cfm) ow is recommended.
•When back-channel cooling is not used, 4080 m3/h (2400 cfm) ow is recommended.
130BE569.10
Illustration 4.4 Airow, Standard Unit (Left), Bottom/Top Cooling Kit (Middle), and Back/Back Cooling Kit (Right)
Mechanical Installation Installation Guide
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4.3 Installing the Drive Modules
Install the drive modules into the cabinet frame as described in the following steps.
1. Unpack the drive modules from the packaging. See chapter 4.1 Receiving and Unpacking the Unit.
2. Install 2 eye bolts in the top of the rst drive module. Prepare the drive module for lifting, using an appropriate
lifting harness and an overhead hoist or crane with the necessary lifting capacity. See chapter 4.1.2 Lifting the Unit.
130BE571.10
Illustration 4.5 Installation of Eye Bolts
3. Install the 2 bottom mounting screws and gaskets onto the mounting panel.
4. Using the crane or hoist, lift the drive module and then lower the unit through the top of the cabinet frame. Align
the bottom mounting holes of the unit with the 2 bottom mounting screws on the mounting panel.
5. Verify that the drive module is correctly aligned on the mounting panel and then secure the bottom of the unit to
the panel with the 2 hex nuts. See Illustration 4.6. Torque the hex nuts. Refer to chapter 7.9 Fastener Tightening
Torques.
6. Secure the top of the unit to the mounting panel with M10x26 screws, and then torque the screws.
7. Line up the groove on the microswitch with the edges on each DC fuse and press rmly until the microswitch
clicks into place.
8. Install 2 DC fuses with microswitches onto the tops of the DC-link terminals on each drive module. The
microswitches should be installed on the outer side of each terminal. Refer to Illustration 3.1.
9. Secure each fuse with 2 M10 screws and torque the screws.
10. Install the next drive module.
Mechanical Installation VLT®Parallel Drive Modules
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130BE572.10
Illustration 4.6 Installation of Bottom Mounting Bolts
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4.4 Installing the Control Shelf
NOTICE
To avoid RFI, do not route control wiring together with power cables or bus bars.
1. Remove the control shelf assembly from its package.
2. Remove the LCP from the control shelf.
3. Use some type of mounting bracket to install the control shelf. Danfoss does not supply the mounting brackets for
the control shelf. For EMC-correct installation, refer to Illustration 4.7.
4. Remove the MDCIC cover from the control shelf assembly.
5. Connect the 44-pin ribbon cables from the MDCIC card to the top of the drive modules, following the sequence
numbers indicated next to the connectors on the MDCIC.
6. Route the 44-pin ribbon cables inside the cabinet.
7. Connect the external brake fault wiring harness between the microswitch terminals and the brake jumper
connector on the top of the drive module.
8. Connect the relay wiring between relay 1 or 2 on the control shelf and the corresponding relay connector on the
top of the drive module.
9. Connect the microswitch to the microswitch connector provided on the top of the drive module. Refer to
Illustration 3.1 and Illustration 3.3.
130BE713.11
1
2
1 Control shelf must stay below this point 2 Control shelf must stay above this point
Illustration 4.7 Positioning the Control Shelf for EMC-correct Installation
Mechanical Installation VLT®Parallel Drive Modules
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