Siemens A01104 fault code meaning

Series: DCM-6RA80

CU: Do not disconnect the power supply! The file system is being optimized.

DC drive

Meaning: The file system in the control unit's nonvolatile device memory is being optimized. This process may take several minutes. Note: Do not disconnect the control unit during optimization, as this may cause loss of user data.

Possible causes

Source: SINAMICS DCM, Parameter Manual, Firmware Version 1.5 SP2 (based on 5.1 SP2) P942