Siemens A33431 fault code meaning

Series: S120-S150

Encoder 3: Incremental/absolute position difference too large (alarm

converter

Meaning: A deviation from the incremental position was detected when crossing a zero pulse. Equidistant zero pulses: - The first zero pulse crossed establishes the reference point for all subsequent checks. Subsequent zero pulses are spaced at multiples of n relative to the first zero pulse. Equidistant zero pulses: - The first pair of zero pulses establishes the reference point for all subsequent checks. The distance between subsequent pairs of zero pulses must match the expected distance between the first pair of zero pulses.

Possible causes

Source: SINAMICS S120_S150 P3101