Danfoss VLT FC Series, Руководство по обслуживанию

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9.1.3 Split Bus Power Supply Connection
WARNING
PERSONAL INJURY RISK
Do not apply AC mains voltage to the drive when it is
wired in split bus mode.
NOTICE
PARALLEL DRIVE MODULE CONNECTION
If servicing an individual module from a parallel drive
system, an external service kit is required during split
bus power mode. See
chapter 9.2.1 Overview for
instructions.
Connecting the Split Bus Power Supply to a Single Drive
1. Ensure that AC power has been removed and all
DC capacitors are fully discharged.
2. Remove the top and bottom shields for access to
the busbars and terminals.
3. Remove the control card mounting plate for
access to the power card.
4. Disconnect the DC link plug from connector
MK902 on the power card.
5. Connect a DC supply to the split bus terminal
(MK901 or MK 902) on the power card. If using
MK 901, pin A is positive and pin C is negative. If
using MK902, pin 1 is positive and pin 4 is
negative. To run all the fans at 100% on split bus
power supply, the minimum current rating
required is 1500 mA. The allowable power supply
range depends on the voltage of the drive:
•
230 V AC drive (T2) requires 210–380 V
DC supply.
•
400 V AC drive (T4/T5) requires 420–750
V DC supply.
•
690 V AC drives (T7) requires 610–1000
V DC supply.
The Danfoss split bus power supply (p/n
130B3146) is designed to provide 650 V DC,
which is compatible with 400 V AC and 690 V AC
drives.
6. Reinstall the control card mounting plate.
7. Apply the voltage to the unit. The LCP indicator
lights illuminate as if the drive was powered
normally.
9.2 Parallel Drive Module Service Kit
9.2.1 Overview
The parallel drive module service kit allows authorized
technicians to run and test an individual parallel drive
module when it is not installed in a system. For example if
a single parallel drive module in a 4-module system fails,
the failed module is removed and serviced. Before the
technician reinstalls the repaired module into the 4-module
configuration, the technician tests the module using this
service kit.
The service kit enables the technician to:
•
Troubleshoot and test an individual parallel drive
module in split bus mode.
•
Program an individual drive module.
•
Check the logic connections of an individual drive
module using the 24 V option D card.
Components of the service kit
•
LCP.
•
Control card.
•
MDCIC.
•
Wire harness to connect MDCIC to control card.
•
Wire harness to connect MDCIC to module.
•
24 V power supply option card (optional).
Tools required
•
Wire harness for powering 24 V option card.
•
230 V to 24 V rectifier (if 24 V DC is not available
in field).
•
Current scaling card for the appropriate module.
•
Tools for opening the service kit enclosure.
•
Split bus power supply.
Special Test Equipment
VLT
®
FC Series, D1h–D8h, Da2/Db2/Da4/Db4, E1h–E4h, J8/J9
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