EL
ErrorLib
Brands
||
  1. Home
  2. Fanuc
  3. Alpha i Series Servo Amplifier
  4. 0445
About·Privacy·Terms

ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

0445

Velocity Loop Proportional Gain Overflow

Fanuc · Alpha i Series Servo Amplifier

What does 0445 mean?

This invalid parameter setting alarm indicates that the internal calculation value of the velocity loop proportional gain has overflowed. This typically occurs when the parameter setting for the proportional gain is excessively high, leading to calculation errors.

Common Causes

  • Proportional term in the velocity control loop has exceeded its maximum allowable value.
  • Sudden changes in motor speed.
  • Inadequate velocity loop proportional gain (P04-10).
  • High frequency noise in velocity feedback.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Use the function for changing the internal format of the velocity loop proportional gain to prevent overflow.

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