Siemens A33999 fault code meaning
Siemens / A33999
Series: G120-CU250S-2
Encoder 3: Unknown alarm
converter
Meaning: An alarm that the control unit firmware cannot recognize has occurred on the encoder module for encoder 3. 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 P1590
Series: G130-G150, S120-S150
Encoder 3: Unknown warning
converter
Meaning: An alarm that the control unit firmware cannot recognize has occurred on the encoder module for encoder 3. This fault may occur if the firmware on this component is newer than the control unit firmware.
Possible causes
Source: SINAMICS G130_G150 P1932;SINAMICS S120_S150 P3123