Fanuc 0i Error Code 407

Fanuc CNC Major Servo Alarm

Model: FANUC Series 0i / 0i Mate | Code: 407

Applicable Systems
Series 0i Series 16/18/21 Alpha Beta

Symptoms

A servo excess error (excessive position deviation) was detected.

Possible Causes

  • Excessive position deviation between command and actual position.
  • Servo gain mismatch or mechanical resistance.

Troubleshooting Steps

  1. Step 1: Check for mechanical obstruction or excessive load.
    Obstruction or load identified.
  2. Step 2: Adjust servo gain parameters or remove the obstruction.
    Position deviation reduced to normal.

How to Reset

Fix the position deviation cause and reset to clear the alarm.

Related Fanuc Fault Codes

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Source: Fanuc 0i/0iMate Alarm Code List, FANUC Corporation

Category: CNC