F31110 (N, A) Encoder 1: Serial communications error fault in Siemens SINAMICS S120 Drive

Categories: Faults & Alarm

F31110 (N, A) Encoder 1: Serial communications error fault in Siemens SINAMICS S120 Drive

Cause:
Serial communication protocol transfer error between the encoder and evaluation module. Fault value (r0949, interpret binary) indicates specific issues like CRC error, no response, etc.

Remedy:
Remedies are provided for each specific fault bit (0-14), generally involving:

  • Checking for EMC compliance and proper cable shielding.
  • Replacing the encoder, encoder cable, or Sensor Module.
  • Verifying correct encoder type and parameterization.
  • Updating Sensor Module firmware.