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ErrorLib — Industrial Fault Code Library

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0886

Machine Velocity Feedback Coefficient Overflow

Fanuc · Alpha i Series Servo Amplifier

What does 0886 mean?

This invalid parameter setting alarm indicates that the internal calculation value of the machine velocity feedback coefficient has overflowed. This usually happens if the coefficient is set too high, exceeding internal processing limits.

Common Causes

  • The calculated machine velocity feedback coefficient is too high.
  • A sensor reading related to machine speed has overflowed during coefficient calculation.
  • Parameter P601.2 (Velocity Feedback Coefficient) is set too high.
  • An internal process overflowed during the calculation of the velocity feedback gain.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Decrease the machine velocity feedback coefficient.

  2. 2

    Alternatively, utilize the vibration-damping control function, which offers an equivalent effect.

Browse all codes in this manual (101)
Verified technical data. Last updated: April 2026

Related Faults

0233Velocity Pulse Count Exceeded0243Position Pulse Count Exceeded0434Velocity Loop Integral Gain Overflow
Source: Fanuc Alpha i Series Servo Amplifier
Open Manual (Page 33)Search more codes in this manual