Siemens A35012 fault code meaning
Siemens / A35012
Series: S120-S150
TM54F: Forced fault check of fail-safe digital inputs/outputs in progress
converter
Meaning: A forced fault check of the fail-safe digital inputs/outputs (F-DI/F-DO) is in progress.
Possible causes
Source: SINAMICS S120_S150 P3141