0688
Feed-Forward Coefficient Overflow
Fanuc · αi Series Servo Amplifier
What does 0688 mean?
This invalid parameter setting alarm indicates that the internal calculation value of the feed-forward coefficient has overflowed. This suggests the coefficient setting is too high or requires a different calculation method to accommodate the value.
Repair Steps
- 1
Utilize the position gain expansion function to handle the feed-forward coefficient calculation.
Verified technical data. Last updated: March 2026
Source: Fanuc αi Series Servo Amplifier