Siemens SINAMICS S120 Equipment Manual page 348

Service and Maintenance
15.2 Reforming the DC link capacitors
Figure 15-2
Procedure
● Before you form the DC link capacitors, the DC link bridge must be removed.
● It is not permissible that the drive unit receives a power-on command (e.g. from the
● Connect the forming circuit.
● During the forming process, the incandescent lamps must become less bright or go
348
Motor Module interface
keyboard, BOP20 or terminal strip).
completely dark. If the incandescent lamps continue to be brightly lit, a fault has occurred
in the drive unit or in the wiring.
Booksize cold-plate power units
Manual, (GH4), 03.2007, 6SL3097-2AJ00-0BP4