Siemens F31122 fault code meaning
Siemens / F31122
Series: DCM-6RA80
Encoder 1: Encoder module hardware error
DC drive
Meaning: An internal hardware fault was detected in the encoder module.
Possible causes
Source: SINAMICS DCM, Parameter Manual, firmware version 1.5 SP2 (based on 5.1 SP2) P1068
Series: G120-CU250S-2
Encoder 1: Internal power supply error
converter
Meaning: The ASIC internal reference voltage of encoder 1 is incorrect.
Possible causes
Source: SINAMICS G120, Control Unit CU250S-2 P1503
Series: S110
Encoder 1: Internal power supply error
servo drive
Meaning: The ASIC internal reference voltage of encoder 1 is incorrect.
Possible causes
Source: SINAMICS S110 P1117