330-0037

Acknowledge Alarm

Press the CE (Clear Error) button on the control panel to acknowledge the alarm and reset the system for further action.

Ensure no other alarms are active before proceeding to avoid masking underlying issues.

Ensure hands are clear of moving parts before interacting with the control panel.

Verify Axis Status

Check the axis status display on the Heidenhain control unit to confirm whether the axis is still in motion or at a standstill.

Look for any residual velocity readings; even small values can trigger this alarm.

Do not attempt manual intervention if the axis is still moving.

Bring Axis to Standstill

If the axis is still in motion, manually stop it using the appropriate control command or emergency stop if necessary, then wait for confirmation of standstill.

Allow a few seconds after stopping for the system to register the standstill status.

Follow safety protocols when using emergency stop to avoid unintended machine behavior.

Acknowledge Alarm

Press the CE button to clear the alarm and prepare the system for diagnostics.

Note the time of alarm occurrence for correlation with system logs.

Ensure no other operations are running during this process.

Check System Logs

Access the error log on the Heidenhain control unit to identify any delays or communication errors between the controller and axis feedback system.

Look for timestamps indicating delayed status updates or communication timeouts.

Do not modify log data; only review for diagnostic purposes.

Restart Control System

If delays are evident, perform a controlled restart of the control system to reset communication protocols, then recheck axis status before testing.

Save any active programs or settings before restarting to avoid data loss.

Follow manufacturer guidelines for system restart to prevent damage.

Acknowledge Alarm

Press CE to clear the alarm and ensure the system is ready for mechanical inspection.

Document the alarm occurrence for maintenance records.

Ensure the machine is powered down before mechanical inspection.

Inspect Axis Brakes

Physically inspect the axis brake system for signs of wear, damage, or insufficient engagement that could allow residual motion.

Use a torque wrench to check brake tension against manufacturer specs.

Lock out/tag out the machine to prevent accidental activation during inspection.

Test Mechanical Components

Manually test the axis for smooth operation and check for excessive friction or binding that might prevent a full stop, lubricating or replacing parts as needed.

Use only manufacturer-approved lubricants to avoid compatibility issues.

Wear protective gear during manual testing to avoid injury.

Acknowledge Alarm

Press CE to clear the alarm and prepare for sensor diagnostics.

Record any recurring alarm patterns for future reference.

Ensure no active operations before proceeding.

Access Sensor Diagnostics

Use the Heidenhain diagnostic menu to check the feedback sensor output for the affected axis, looking for erratic or incorrect readings.

Compare readings with a known good axis if possible for baseline data.

Do not alter sensor settings without proper training.

Replace or Recalibrate Sensor

If sensor readings are inconsistent, recalibrate per manufacturer guidelines or replace the sensor if calibration fails, then retest the axis.

Keep spare sensors on hand for critical axes to minimize downtime.

Ensure proper grounding during sensor replacement to avoid electrical damage.

Acknowledge Alarm

Press CE to clear the alarm and access system settings for review.

Take note of any recent software changes before proceeding.

Avoid running other operations during this process.

Review Axis Parameters

Access the parameter settings in the Heidenhain control unit and verify that axis standstill thresholds and timeouts are set according to manufacturer specifications.

Cross-check settings with the machine’s original configuration backup if available.

Do not modify parameters without proper documentation.

Update or Reset Configuration

If parameters are incorrect, update them to match manufacturer specs or perform a controlled reset to default settings, then retest the axis.

Document any changes made for future troubleshooting.

Ensure a full system backup before resetting to avoid data loss.