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
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.
Additional Resources
1.2
Other resources are available to understand functions and
programming of the VLT® Parallel Drive Modules.
qualied
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
•
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.
Parallel Drive Modules Bus Bar Kit Instal-
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.
EditionRemarksSoftware
version
MG37K3xxAdded 230 V external
power supply content
Table 1.1 Document and Software Version
Approvals and Certications
1.4
FC 102 (5.0x),
FC 202 (3.0x),
FC 302 (7.6x)
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 specications.
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.
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.
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.
22
2.2 Qualied Personnel
Correct and reliable transport, storage, and installation are
required for the trouble-free and safe operation of the
VLT® Parallel Drive Modules. Only qualied personnel are
allowed to install this equipment.
Qualied personnel are dened 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.
Safety Precautions
2.3
WARNING
HIGH VOLTAGE
The drive system contains high voltage when connected
to AC mains input. Failure to ensure that only qualied
personnel install the drive system can result in death or
serious injury.
Only qualied 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
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.
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 congurations 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 certied 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
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.
WARNING
EQUIPMENT HAZARD
Contact with rotating shafts and electrical equipment
can result in death or serious injury.
Ensure that only trained and qualied 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.
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.
33
NOTICE
EXTERNAL 230 V SUPPLY
An external 230 V supply is needed to power the SMPS
(switch mode power supply) and any cabinet fans.
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.
33
1DC-link terminal and DC fuse8Ground terminals
2MDCIC plug9Top fan
3Microswitch to DC fuse10Drive module label. See Illustration 4.2.
4Relays 1 and 211Motor output terminals (inside the unit)
5Brake fault jumper and connector12Heat sink and heat sink fan
6Mains input terminals (inside the unit)13Ground plate
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.
33
1LCP cradle7MDCIC card
2Control card (underneath cover)8Control shelf
3Control terminal blocks9Switch mode power supply (SMPS). Note that an external 230 V
supply is needed to power the SMPS.
4Top-level drive system label. See Illustration 4.1.10Pilz relay
544-pin cables from MDCIC board to drive modules11DIN rail
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)
33
•
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.
1DC fuse2Microswitch connector
Illustration 3.3 DC Fuse and Microswitch Connector
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
130BE711.14
Intended use - The Individual Base Drive
Modules are intended for use in Parallel Drive
Module system only. Specic electrical
ratings are not applicable. Name plate of
Parallel Drive Module system should
be referred for actual drive ratings.
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
Mechanical InstallationInstallation Guide
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
is needed.
®
clarication
44
1Type code
2Code number
3Intended use disclaimer
4Discharge time
5Serial 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.
1Type code
2Code number
3Power rating
4Input voltage, frequency, and current
5Output voltage, frequency, and current
6Discharge time
Illustration 4.1 Top-level Drive System Label (Example)
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 specied 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.
44
•
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.
VLT® Parallel Drive Modules
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 AmbientConditions for Drive Modules for recommended ambient conditions.
This section describes the minimum recommended
requirements for mechanical installation. For UL and CE
requirements, see chapter 5.2 Electrical Requirements forCertications and Approvals.
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 DCBus Dimensions.
4.2.1 Environmental
44
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:
DescriptionWidth [mm (in)]Thickness [mm (in)]
AC motor143.6 (5.7)6.4 (0.25)
AC mains143.6 (5.7)6.4 (0.25)
DC bus76.2 (3.0)12.7 (0.50)
Table 4.2 Cross-section Measurements for Customized Busbars
NOTICE
Align busbars vertically to provide maximum airow.
Ventilation openingsSee chapter 4.2.5 Cooling and Airow
Table 4.1 Cabinet Requirements
1) Required if Danfoss busbar or cooling kits are used.
2000 (78.7)
2-drive: 450 (992), 4-drive: 910 (2006)
Requirements.
1)
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.
For heat dissipation values, refer to chapter 7.1 Powerdependent Specications. 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 andAirow Requirements.
The recommendations provided in this section are necessary for eective 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 airow.
Drive module cooling fans
The drive module is equipped with a heat sink fan, which provides the required
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 conrm 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.
•
ow rate of 840 m3/h (500 cfm) across the
44
Illustration 4.4 Airow, Standard Unit (Left), Bottom/Top Cooling Kit (Middle), and Back/Back Cooling Kit (Right)
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
lifting harness and an overhead hoist or crane with the necessary lifting capacity. See chapter 4.1.2 Lifting the Unit.
rst drive module. Prepare the drive module for lifting, using an appropriate
44
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 TighteningTorques.
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.
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
44
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.
1Control shelf must stay below this point2Control shelf must stay above this point
Illustration 4.7 Positioning the Control Shelf for EMC-correct Installation
See chapter 2 Safety for general safety instructions.
WARNING
INDUCED VOLTAGE
When output motor cables from dierent frequency
converters are run together, induced voltage can charge
equipment capacitors even with the equipment turned
o and locked out.
To avoid death or serious injury:
Run output motor cables separately or use
•
shielded cables.
Simultaneously lock out all the frequency
•
converters.
CAUTION
SHOCK HAZARD
The drive system can cause a DC current in the
protective earth (PE) conductor.
When a residual current-operated protective
•
device (RCD) is used for protection against
electrical shock, only an RCD of Type B is
allowed on the supply side.
Failure to follow this recommendation could prevent the
RCD from providing the intended protection.
NOTICE
MOTOR OVERLOAD PROTECTION
The drive modules are supplied with Class 20 overload
protection for single motor applications.
Overcurrent protection
Extra protective equipment, such as short-circuit
•
protection or motor thermal protection between
the drive modules and the motors, is required for
applications with multiple motors.
The correct input fusing is required to acquire
•
approvals and meet certication requirements,
and to provide short circuit and overcurrent
protection. These fuses are not factory-supplied,
and must be provided by the installer. See
maximum fuse ratings in chapter 7.1 Power-dependent Specications.
Wire type and ratings
All wiring must comply with local and national
•
regulations regarding cross-section and ambient
temperature requirements.
Power connection wire recommendation:
•
minimum 75 °C rated copper wire.
See chapter 7.6 Cable Specications for recommended wire
sizes and types.
55
CAUTION
PROPERTY DAMAGE
Electronic thermal relay (ETR) protection against motor
overload is not included in the default setting. To
program the LCP for this function, refer to the VLTParallel Drive Modules User Guide.
5.2 Electrical Requirements for Certications and Approvals
The standard conguration provided in this guide (drive
modules, control shelf, wire harnesses, fuses, and
microswitches) is UL and CE certied. The following
conditions must be met apart from the standard congu-ration to obtain UL and CE regulatory approval
requirements. For a list of disclaimers, see
chapter 8.1 Disclaimer.
Use the frequency converter in a heated, indoor-
•
controlled environment. Cooling air must be
55
clean, free from corrosive materials, and
electrically conductive dust. See for specic limits.
Maximum ambient air temperature is 40 °C
•
(104 °F) at rated current.
The drive system must be assembled in clean air,
•
according to enclosure classication. To obtain UL
or CE certication regulatory approvals, drive
modules must be installed according to the
standard conguration provided in this guide.
Maximum voltage and current must not exceed
•
the values provided in chapter 7.1 Powerdependent
conguration.
The drive modules are suitable for use on a
•
circuit capable of delivering not more than
100 kA rms symmetrical amperes at the drive
Specications for the specied drive
nominal voltage (600 V maximum for 690 V units)
when protected by fuses with the standard
conguration. Refer to chapter 5.4.1 Fuse Selection.
The ampere rating is based on tests done
according to UL 508C.
The cables located within the motor circuit must
•
be rated for at least 75 °C (167 °F) in ULcompliant installations. The cable sizes have been
provided in chapter 7.1 Power-dependent Speci-cations for the specied drive conguration.
The input cable must be protected with fuses.
•
Circuit breakers must not be used without fuses
in the U.S. Suitable IEC (class aR) fuses and UL
(class L or T) fuses are listed in chapter 5.4.1 FuseSelection. In addition, country-specic regulatory
requirements must be adhered to.
For installation in the U.S., branch circuit
•
protection must be provided according to the
National Electrical Code (NEC) and any applicable
local codes. To fulll this requirement, use UL-classied fuses.
For installation in Canada, branch circuit
•
protection must be provided according to the
Canadian Electrical Code and any applicable
provincial codes. To fulll this requirement, use
the UL-classied fuses.
To protect the drive system in case 1 or more internal
components break down within a drive module, use fuses
and/or circuit breakers at the mains supply side.
5.4.1.1 Branch Circuit Protection
To protect the installation against electrical and re
hazards, protect all branch circuits in an installation against
55
short circuit and overcurrent according to national and
international regulations.
5.4.1.2 Short-circuit Protection
Danfoss recommends the fuses listed in
chapter 5.4.1.3 Recommended Fuses for CE Compliance and
chapter 5.4.1.4 Recommended Fuses for UL Compliance to
achieve CE or UL Compliance in the protection of service
personnel and property against the consequences of
component breakdown in the drive modules.
Number of drive
modules
4N630N710aR-1600
4N710N800aR-2000
4N800N900aR-2500
4N900N1M0aR-2500
4N1M0N1M2aR-2500
Table 5.3 6-Pulse Drive Systems (525–690 V AC)
Number of drive
modules
2N250N315aR-550
2N315N355aR-630
2N355N400aR-630
2N400N500aR-630
2N500N560aR-630
2N560N630aR-900
4N630N710aR-900
4N710N800aR-900
4N800N900aR-900
4N900N1M0aR-1600
4N1M0N1M2aR-1600
FC 302FC 102/
FC 202
FC 302FC 102/
FC 202
Recommended fuse
(maximum)
Recommended fuse
(maximum)
5.4.1.3 Recommended Fuses for CE
Compliance
Number of drive
modules
2N450N500aR-1600
4N500N560aR-2000
4N560N630aR-2000
4N630N710aR-2500
4N710N800aR-2500
4N800N1M0aR-2500
Table 5.1 6-Pulse Drive Systems (380–500 V AC)
Number of drive
modules
2N250N315aR-630
2N315N355aR-630
2N355N400aR-630
2N400N450aR-800
2N450N500aR-800
4N500N560aR-900
4N560N630aR-900
4N630N710aR-1600
4N710N800aR-1600
4N800N1M0aR-1600
Table 5.2 12-Pulse Drive Systems (380–500 V AC)
FC 302FC 102/
FC 202
FC 302FC 102/
FC 202
Recommended fuse
(maximum)
Recommended fuse
(maximum)
Table 5.4 12-Pulse Drive Systems (525–690 V AC)
5.4.1.4 Recommended Fuses for UL
Compliance
The drive modules are supplied with built-in AC
•
fuses. The modules have been qualied for
100 kA short-circuit current rating (SCCR) for the
standard busbar congurations at all voltages
(380–690 V AC).
If no power options or extra busbars are
•
connected externally, the drive system is qualied
for 100 kA SCCR with any Class L or Class T ULlisted fuses connected at the input terminals of
the drive modules.
Do not exceed the listed fuse rating in Table 5.6
•
to Table 5.7 with the current rating of the Class L
or Class T fuses.
This section describes how the electrical kit is used to
connect 2 or 4 drive modules in parallel - to provide
controlled power to an AC motor. A diagram is provided
for each of the 4 congurations which, if followed, meet
specic agency approvals and certications. If designing
and building other congurations, seek agency approvals
or certications apart from Danfoss.
Read this section for guidance in making electrical
connections when assembling the drive modules into a
55
panel.
5.6 DC Bus Fuse Installation
DC fuses are provided in the basic kit. Install the DC fuses
at the available DC terminals at individual drive modules,
using the recommended bolts. Each DC fuse has a xture
for mounting the microswitches, which are used to detect
a fuse failure. See Illustration 3.3. Install the supplied
harness between the microswitch terminals and the brake
fault jumper port on the top of the drive modules. If the
jumper is not installed properly, the unit does not power
up and the error Brake IGBT Fault is shown. The
microswitch has 3 terminals: NO, NC, and COM. Connect
the wire harness between the NC and COM terminals. If it
is connected between any other terminals, the unit does
not power up, and the error Brake IGBT Fault is shown.
NOTICE
The microswitch is a snap t onto the fuse. Ensure that
the switch is properly installed on the fuses.
5.7 Motor Connections
5.7.1 Motor Cables
See chapter 7.6 Cable Specications for more information on
wire type and sizes.
NOTICE
SHIELDED CABLE LENGTH
With a standard VLT® Parallel Drive Modules drive
system, shielded cables up to 150 m (492 ft) long or
unshielded up to 300 m (984 ft) long provide full voltage
at the motor. If this cable length is exceeded, use a
dU/dt lter. For information on the selection of a dU/dt
lter, refer to the VLT® Parallel Drive Modules Design
Guide.
motor cable. Use motor cables with rated voltage specication of at least 0.6/1 kV. Cables in this range provide
good resistance to insulation breakdown.
5.7.1.2 Dimensions
Follow local codes for current capacity data for cables and
conductors. Widely used codes include: NFPA 70, EN
60204-1, VDE 0113-1, and VDE 0298-4. Overdimensioning
for harmonics is not required.
5.7.1.3 Length
Keep cables as short as possible. Voltage drop and heat
dissipation depends on the frequency and is approximately
proportional to cable length. Consult the cable
manufacturer specications regarding the length and
expected voltage drop when connected to the drive
system. See chapter 7.6 Cable Specications.
5.7.1.4 Shielding
The following factors are important for eective shielding:
Make sure that the amount of cable surface
•
covered by the shield is at least 80%.
Use a single-layer braided copper shield. Ensure
•
that the shield is braided to reduce surface area
for leakage currents.
Use cables with double shielding to improve the
•
attenuation of interference further. Twisted
conductors reduce magnetic elds.
Use cables that are shielded at both ends
•
between the drive system and the motor.
To comply with radio frequency interference
•
limits, shield the cables between the drive system
and the motor at both ends.
Ensure that the shield fully surrounds the cable.
•
Route cable glands or cable clamps directly to
•
the grounding point.
Keep connections as short as possible at each
•
end of the cable.
Bridge shield gaps such as terminals, switches, or
•
contactors by using connections with the lowest
possible impedance and the largest possible
surface area.
NOTICE
TWISTED SHIELD ENDS (PIGTAILS)
5.7.1.1 Voltage Rating
Peak voltages up to 2.8 times the mains voltage of the
VLT® Parallel Drive Modules drive system can occur in the
motor cable. High peak voltages can severely stress the
Twisted shield ends increase the shield impedance at
higher frequencies, which reduces the shield eect and
increases the leakage current. To avoid twisted shield
ends, use integrated shield clamps. Refer to
Illustration 5.2.