SRG speed too high

What does 231-E008 mean?

This error indicates that the Safe Reduced Rotational Velocity (SRG) limit has been exceeded, or that the Heidenhain TNC CNC Controller failed to achieve a standstill during the Safe Controlled Stop (SBH) operating mode. This is a critical safety violation, as the machine is operating at an unsafe speed or has not stopped as commanded by a safety function, posing a risk of injury or damage.

• The actual motor speed has exceeded the configured Safe Reduced Rotational Velocity (SRG) threshold.
• The drive or motor failed to achieve standstill within the specified time during an active Safe Controlled Stop (SBH) command.
• Malfunction in the speed monitoring system or the motor encoder feedback, leading to incorrect speed detection.
• Incorrect parameterization of the SRG or SBH safety functions within the controller or safety module.

Click steps to track your progress.

1. 1

   Verify the actual motor speed using diagnostic tools on the Heidenhain TNC CNC Controller and compare it against the configured SRG limit parameter in the safety controller.

2. 2

   Check the functionality of the motor encoder and its wiring for any damage, loose connections, or signal interference that could lead to inaccurate speed feedback.

3. 3

   Review the parameters related to Safe Reduced Rotational Velocity (SRG) and Safe Controlled Stop (SBH) in the CNC controller and safety module; ensure they are correctly configured according to the machine's design and safety requirements.

4. 4

   Perform a controlled test of the SBH function, monitoring the motor's deceleration and verifying that it reaches standstill within the specified time.

5. 5

   If the issue persists after verifying parameters and feedback, consult a Heidenhain service agency for further diagnostics on the safety module or drive system.