Siemens A31811 fault code meaning

Series: S200

Motor encoder: Encoder serial number changed

servo drive

Meaning: The serial number of the synchronous motor encoder has changed. The motor with a calibrated built-in encoder has been replaced. Note: With position control, the serial number is transmitted when calibration starts (p2507 = 2). After encoder calibration is complete (p2507 = 3), the serial number is checked for changes.

Possible causes

Source: SINAMICS S200 PROFINET_SIMOTICS S-1FL2 P586