Siemens F07905 fault code meaning

Siemens / F07905

Series: G120-CU250S-2

External armature short circuit: Missing contactor feed

converter

Meaning:

Possible causes

Source: SINAMICS G120 converter with Control Unit CU250S-2 (Vector) P441

Series: G130-G150, S120-S150

External armature short circuit: Contactor feedback "open" missing

converter

Meaning: After the contactor opened, the "open" feedback signal (p1235) (r1239.1 = 0) was not received within the monitoring time (p1236).

Possible causes

Source: SINAMICS G130_G150 P1668; SINAMICS S120_S150 P2820

Series: G220, S220

External armature short circuit: Contactor "open" feedback missing

converter

Meaning: The binary signal sink "External armature short circuit: contactor feedback" (c1235) did not issue the "Open" signal (r1239.1 = 0) within the monitoring time (p1236) when the contactor opened.

Possible causes

Source: SINAMICS G220 Converter P1374; SINAMICS S220 Converter P2358

Series: S110

External armature short circuit: Contactor feedback "open" missing

servo drive

Meaning: After the contactor opened, the "open" feedback signal (p1235) (r1239.1 = 0) was not received within the monitoring time (p1236).

Possible causes

Source: SINAMICS S110 P1051