Siemens F31126 fault code meaning

Series: G120-CU250S-2

Encoder 1: AB amplitude too high

converter

Meaning: The amplitude of encoder 1 (the square root of A^2 + B^2, or |A| + |B|) is outside the permissible tolerance.

Possible causes

Source: SINAMICS G120, Control Unit CU250S-2 P1049