Siemens · SINAMICS G120C Variable Speed Drive
No rated data is stored in the power unit's EEPROM, meaning the drive lacks essential operational parameters. Without this critical data, the power unit cannot be correctly configured, initialized, or operated. This fault renders the drive inoperable, as attempts to run it without appropriate parameters could lead to unpredictable behavior or damage.
Click steps to track your progress.
Verify the power unit's hardware version and ensure it is compatible with the installed Control Unit.
Perform a factory reset of the drive parameters (P0010 = 30, P0970 = 1) to attempt to load default power unit data.
Load a saved parameter set (e.g., from a memory card or previous backup) to the drive, ensuring it includes power unit specific data.
If the fault persists on a new power unit, it may be defective and require replacement.