Replacing A Power Module - Siemens SINAMICS G120D Operating Instructions Manual

Corrective maintenance

10.4 Replacing a Power Module

10.4 Replacing a Power Module
Overview
You are only permitted to replace the Power Module by another Power Module under certain
specific preconditions.
Requirement
The following preconditions apply when making a replacement:
• The new and replaced Power Modules have the same power rating.
• The new Power Module has a different power rating than the replaced Power Module.
In this case, the rated power of the Power Module and the rated power of the motor must not
differ too much.
The following values are permissible for the quotients (rated motor power)/(rated Power
Module power): 0.25 ... 1.5
Description
Procedure
1. Switch off the line voltage to the Power Module.
You do not have to switch off an external 24 V power supply for the Control Unit if one is being
used.
2. Remove the connecting cables of the Power Module.
3. Remove the Control Unit from the Power Module.
4. Replace the previous Power Module with the new Power Module.
5. Mount the Control Unit onto the new Power Module.
6. Connect up the new Power Module using the connecting cables.
7. Switch on the line supply and, if necessary, the 24 V supply of the Control Unit.
8. Perform a reduced acceptance test if the converter outputs fault F01641.
(Page 326)
You have successfully replaced the Power Module.
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318
Reduced acceptance test after component replacement and firmware change
Converter with the control units CU240D-2
Operating Instructions, 10/2020, FW V4.7 SP13, A5E34262100B AH