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0688
Feed-Forward Coefficient Overflow
Fanuc · Alpha i Series Servo Amplifier
Hva betyr 0688 ?
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.
Vanlige årsaker
- Feed-forward coefficient calculation has overflowed.
- Control system struggles to predict dynamic torque requirements.
- Tuning of feed-forward parameters (P04-16) is inappropriate.
- Sudden application or removal of load.
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Utilize the position gain expansion function to handle the feed-forward coefficient calculation.
Verifisert teknisk data. Sist oppdatert: March 2026
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Kilde: Fanuc Alpha i Series Servo Amplifier