Siemens A31903 fault code meaning
Siemens / A31903
Series: DCM-6RA80
Encoder 1: I2C-BUS fault occurred
DC drive
Meaning: Error operating the internal I2C Bus bus.
Possible causes
Source: SINAMICS DCM, Parameter Manual, firmware version 1.5 SP2 (based on 5.1 SP2) P1103
Series: S200
Motor encoder: I2C bus fault
servo drive
Meaning:
Possible causes
Source: SINAMICS S200 PROFINET_SIMOTICS S-1FL2 P587
Series: S220
Motor encoder: I2C bus fault
converter
Meaning:
Possible causes
Source: SINAMICS S220 converter P2555