Replacing A Power Module With Enabled Safety Function - Siemens SINAMICS G120 Operating Instructions Manual

Corrective maintenance
9.2 Replacing inverter components
9.2.6

Replacing a Power Module with enabled safety function

Electric shock due to residual charge in the Power Module
After switching off the line voltage, it will take up to 5 minutes until the capacitors in the Power
Module are sufficiently discharged for the residual voltage to be safe. Death or serious injury
will result if energized parts are touched.
● Check the safe isolation of the Power Module connections before carrying out installation
NOTICE
Motor damage due to interchanged motor connecting cables
The direction in which the motor rotates switches if you exchange the two phases of the motor
line. A motor with an incorrect direction of rotation can damage the machine or installation.
Driven loads with only one permissible direction of rotation include certain saws.
● Connect the three phases of the motor lines in the right order.
● After replacing the Power Module, check the direction of motor rotation.
Procedure
1. Switch off the line voltage of the Power Module.
You can leave any external 24 V supply to the Control Unit switched on.
2. Remove the connecting cables of the Power module.
3. Remove the Control Unit from the Power Module.
4. Replace the 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. The inverter reports F01641.
9. Perform a reduced acceptance test
(Page 436)
You have successfully replaced the Power Module.
❒
424
WARNING
work.
Reduced acceptance after a component has been replaced and a firmware change
Converter with the CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG