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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.

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: April 2026

Related Faults

10590 E004SH1 status test to active10591 E005SH1 status test to inactive10592 E010SH2 status test to active
Source: Heidenhain NC Control
Open Manual (Page 273)Search more codes in this manual