5641

Safety doors are open

Heidenhain · NC Control

What does 5641 mean?

The machine's safety doors are open, preventing machine operation due to safety interlock. This is a normal and expected safety response.

Common Causes

  • Safety doors are open.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure all safety doors are fully closed and securely latched.

  2. 2

    Inspect the safety door interlock switches for proper engagement and functionality.

  3. 3

    Check for any physical obstructions preventing the safety doors from closing completely.

  4. 4

    Verify the wiring of the safety door interlock circuit for continuity and proper signal transmission.

Browse all codes in this manual (58)
Verified technical data. Last updated: March 2026

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