Siemens F31142 fault code meaning

Series: DCM-6RA80

Encoder 1: Battery voltage fault

DC drive

Meaning: When power is off, the encoder uses a battery to retain multi-turn information. The battery power is insufficient, so the encoder cannot continue to retain multi-turn information.

Possible causes

Source: SINAMICS DCM, Parameter Manual, firmware version 1.5 SP2 (based on 5.1 SP2) P1077

Series: G120-CU240B-E-2, G120-CU250S-2, G130-G150, S120-S150

Encoder 1: Battery voltage fault

converter

Meaning: When power is off, the encoder uses a battery to retain multi-turn information. The battery power is insufficient, so the encoder cannot continue to retain multi-turn information.

Possible causes

Source: SINAMICS G120, Control Unit CU240B-2_CU240E-2 P786; SINAMICS G120, Control Unit CU250S-2 P1053; SINAMICS G130_G150 P1804; SINAMICS S120_S150 P2986

Series: S200

Motor encoder: Battery voltage fault

servo drive

Meaning: When powered off, the encoder uses a battery to retain multi-turn information. Battery power is insufficient to continue retaining multi-turn information. System messages 12.3 Faults and alarms SINAMICS S200 PROFINET servo drive system with SIMOTICS S-1FL2 Operating Instructions, 06/2026, FW V6.7, A5E51646752F AG 579

Possible causes

Source: SINAMICS S200 PROFINET_SIMOTICS S-1FL2 P581