Siemens F31116 fault code meaning
Siemens / F31116
Series: G120-CU250S-2
Encoder 1: Monitoring signal A + B amplitude error
converter
Meaning: For encoder 1, the amplitudes of the rectified encoder signals A, B, and the square root of A^2 + B^2 are outside the tolerance range.
Possible causes
Source: SINAMICS G120, Control Unit CU250S-2 P1097
Series: G220
Motor encoder: Signal level of track A or B too low
converter
Meaning: Encoder: The levels of the rectified encoder signals A and B are below the permissible limit.
Possible causes
Source: SINAMICS G220 converter P1486