Siemens SINAMICS G120XA Operating Instructions Manual page 833

Procedure
1. Disconnect the line voltage to the converter.
2. Remove the connecting cables of the converter.
3. Remove the defective converter.
4. Install the new converter.
5. Connect all of the cables to the converter.
6. Switch on the line voltage again.
7. Recommission the drive.
Converter replacement has been completed once it has been commissioned.
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SINAMICS G120XA converter
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
Corrective maintenance
10.1 Replacing an converter
831