Cause : Auto-Tuning Error for PG-E3 Encoder Characteristics comes when the signal lines between the PG-E3 option card and encoder are disconnected at the R+ and R- terminals.

1. Refer to the installation manual for the PG-E3 option card for information on correct connection of signal lines.
2. Excessive electrical interference at the PG-E3 option card.
3. The software for the PG-E3 option card does not support the Auto-Tuning of PG-E3 encoder characteristics.
4. Check the software version (PRG) for the PG-E3 option card.
5. The software version PRG: 1102 or later support Auto-Tuning of PG-E3 encoder characteristics.