Error description 231-AC40

Error message

AC40 Position encoder %1 defective

Cause of error

- Encoder contaminated
- Encoder defective
- Penetration of humidity
- Scanning head misaligned (distance, parallelism, etc.)
- Encoder cabling defective
- Encoder input defective on the control

Error correction

- Inform your service agency
- Check the encoder connection
- Check the encoder