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. 1

    Utilize the position gain expansion function to handle the feed-forward coefficient calculation.

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Verified technical data. Last updated: March 2026
Source: Fanuc αi Series Servo Amplifier