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ErrorLib — Industrial Fault Code Library

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231-A830

CC SRG rot. speed = 0 %1

Heidenhain · TNC CNC Controllers

What does 231-A830 mean?

This error indicates that the maximum permissible velocity for Safe Reduced Speed (SRG) is 0, which means no movement is allowed. This can be caused by parameters, incorrect keylock switch settings, a circuit error or disturbance at input I19 of the operator safety module, or an internal software error.

Common Causes

  • The maximum permissible velocity is 0 as per parameter settings.
  • Only spindle drive: Parameter values for the gear ranges are 0.
  • An illegal operating mode was selected by the keylock switch.
  • Circuit error or disturbance at input I19 of the operator safety module.
  • Internal software error.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the operating mode version by verifying the position of the keylock switch and ensuring a valid SRG mode is selected.

  2. 2

    Inspect the wiring of the operator safety module inputs, particularly input I19, for any loose connections, damage, or disturbances.

  3. 3

    Verify that parameter values for SRG velocity limits and, for spindle drives, gear ranges are set to appropriate non-zero values.

  4. 4

    Measure the signal level at input I19 of the operator safety module to detect any circuit errors or unexpected signals.

  5. 5

    If internal software error is suspected and other steps fail, update the controller's software to the latest version.

Browse all codes in this manual (47)
Verified technical data. Last updated: April 2026

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Source: Heidenhain TNC CNC Controllers
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