Siemens F31117 fault code meaning

Siemens / F31117

Series: G120-CU250S-2

Encoder 1: Signal A/B/R inversion error

converter

Meaning: On the square-wave encoder (bipolar), signals A*, B*, and R* are not the inverses of signals A, B, and R.

Possible causes

Source: SINAMICS G120, Control Unit CU250S-2 P1047

Series: G220

Motor encoder: Signal A/B/R inversion error

converter

Meaning: %1 bin Component: Encoder 1 Reaction: Encoder (IASC/DCBRK, None) Acknowledgment: Immediate Cause: For a square-wave encoder (bipolar, differential), signals A*, B*, and R* are not the inverses of signals A, B, and R.

Possible causes

Source: SINAMICS G220 converter P1486

Series: V90

A/B/R signal inversion error

servo drive

Meaning: On the square-wave encoder (bipolar), signals A*, B*, and R* are not the inverses of signals A, B, and R. The encoder sends both the signals and their inverted signals.

Possible causes

Source: SINAMICS V90 PROFINET, SIMOTICS S-1FL6 Operating Instructions P385