Siemens F31502 fault code meaning
Siemens / F31502
Series: DCM-6RA80
Encoder 1: No valid signal from encoder with measuring gearbox
DC drive
Meaning: The encoder with a measuring gearbox no longer provides a valid signal.
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: No valid signal from encoder with measuring gearbox
converter
Meaning: The encoder with a measuring gearbox no longer provides a valid signal.
Possible causes
Source: SINAMICS G120, Control Unit CU250S-2 P1519; SINAMICS G130_G150 P1818
Series: S200
Motor encoder: No valid signal from encoder with measuring gearbox
servo drive
Meaning: The encoder with a measuring gearbox no longer provides a valid signal.
Possible causes
Source: SINAMICS S200 PROFINET_SIMOTICS S-1FL2 P584
Series: S220
Motor encoder: No valid signal from encoder with measuring gearbox
converter
Meaning: The encoder with a measuring gearbox no longer provides a valid signal.
Possible causes
Source: SINAMICS S220 converter P2540