Siemens A31999 fault code meaning
Siemens / A31999
Series: DCM-6RA80
Encoder 1: Unknown alarm
DC drive
Meaning: An alarm that the control unit firmware cannot recognize occurred on the encoder module for encoder 1. This fault may occur if the firmware on this component is newer than the control unit firmware.
Possible causes
Source: SINAMICS DCM, Parameter Manual, firmware version 1.5 SP2 (based on 5.1 SP2) P1108
Series: G120-CU250S-2
Encoder 1: Unknown alarm
converter
Meaning: An alarm that the control unit firmware cannot recognize has occurred on the encoder module for encoder 1. This fault may occur if the firmware on this component is newer than the control unit firmware.
Possible causes
Source: SINAMICS G120, Control Unit CU250S-2 P1535
Series: G120D, S120-S150
Encoder 1: Unknown alarm
converter
Meaning:
Possible causes
Source: SINAMICS G120D Control Unit CU240D- 2_CU250D- 2 P947; SINAMICS S120_S150 P3022
Series: G130-G150
Encoder 1: Unknown alarm
converter
Meaning:
Possible causes
Source: G150 P947
Series: G210, G220
Motor encoder: Unknown alarm
converter
Meaning: An alarm that the converter firmware cannot recognize has occurred on the encoder module for encoder 1. This may occur if the component firmware is newer than the converter firmware.
Possible causes
Source: SINAMICS G210 converter P1277; SINAMICS G220 converter P1527
Series: S110
Encoder 1: Unknown alarm
servo drive
Meaning: An alarm that the control unit firmware cannot recognize has occurred on the encoder module for encoder 1. This fault may occur if the firmware on this component is newer than the control unit firmware.
Possible causes
Source: SINAMICS S110 P1146
Series: S200
Motor encoder: Unknown alarm
servo drive
Meaning: An alarm that the converter firmware cannot recognize has occurred on the encoder module for encoder 1. This may occur if the component firmware is newer than the converter firmware.
Possible causes
Source: SINAMICS S200 PROFINET_SIMOTICS S-1FL2 P589
Series: S210
Motor encoder: Unknown alarm
servo drive
Meaning:
Possible causes
Source: SINAMICS S210_SIMOTICS S-1FK2 and S-1FT2 P1391