3009

Machining Interference Occurred

Fanuc · Series 0i Manual Guide

What does 3009 mean?

This P/S alarm indicates that an interference has occurred during machining, such as the tool path colliding with the opposite machining area or an existing feature. A common cause is a cutter radius being too large for the defined machining area, posing a risk of tool breakage or part damage.

Common Causes

  • Tool path intersects with a non-machined surface or fixture.
  • Simultaneous axis motion creates a collision path.
  • Programmed offset causes the tool to move into an occupied space.
  • Collision detection system activated due to programmed interference.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Modify the machining program to resolve the interference, potentially by adjusting the cutter radius, optimizing the tool path, or altering the machining area.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Fanuc Series 0i Manual Guide