Siemens F31503 fault code meaning
Siemens / F31503
Series: DCM-6RA80
Encoder 1: Cannot reset position tracking
DC drive
Meaning: Position tracking for the measuring gearbox cannot be reset.
Possible causes
Source: SINAMICS DCM, Parameter Manual, firmware version 1.5 SP2 (based on 5.1 SP2) P1090
Series: G120-CU250S-2, G130-G150
Encoder 1: Cannot reset position tracking
converter
Meaning: Position tracking for the measuring gearbox cannot be reset.
Possible causes
Source: SINAMICS G120, Control Unit CU250S-2 P1520; SINAMICS G130_G150 P1818
Series: G220
Motor encoder: Cannot reset position tracking
converter
Meaning: Cannot reset position tracking for the measuring gearbox.
Possible causes
Source: SINAMICS G220 Converter P1510
Series: S200
Motor encoder: Cannot reset position tracking
servo drive
Meaning: Position tracking for the measuring gearbox cannot be reset. System messages 12.3 Faults and alarms SINAMICS S200 Compact servo drive system with SIMOTICS S-1FL2 or S-1FL1 Operating Instructions, 10/2025, FW V6.5 HF1, A5E54029715B AB 551
Possible causes
Source: SINAMICS S200 Compact_SIMOTICS S-1FL2 and S-1FL1 P553
Series: S210
Motor encoder: Cannot reset position tracking
servo drive
Meaning: Cannot reset position tracking for the measuring gearbox.
Possible causes
Source: SINAMICS S210_SIMOTICS S-1FK2 and S-1FT2 P1381
Series: S220
Motor encoder: Cannot reset position tracking
converter
Meaning:
Possible causes
Source: SINAMICS S220 converter P2540