Siemens SINAMICS S220

Procedure
Proceed as follows to reform DC link capacitors:
1. For a 50mm wide component, 󹪝rst remove the DC link bridge.
2. Make sure that the device does not receive a switch-on command (e.g. via PROFINET/
PROFIBUS, BOP20or terminal block).
3. Connect the forming circuit. When forming with PTC resistors, the component must remain
in the circuit for approx. 1h.
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Figure12-2 Forming circuit for Line Modules with PTC resistors
Service and maintenance
12.2Forming DC link capacitors
Booksize power units
Equipment Manual, 09/2023, A5E53307519B AA 313