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Heidenhain Controller
Parameter · Intermediate · 30-120 minutes
HEIDENHAIN 230-04C9 - Acceptance testing of safety-relevant parameters required
Alarm 230-04C9 triggers when the TNC control detects changes to safety-critical hardware or parameters that require formal acceptance testing before operation can resume. This safety interlock prevents machine operation until proper validation of safety functions is completed through the acceptance test procedure.
230-04C9
HEIDENHAIN 230-04C9 - Acceptance testing of safety-relevant parameters required
Acceptance testing of safety-relevant parameters required
This TNC7/TNC 640 error indicates an issue with 230-04C9. The hardware configuration was significantly changed, e.g. different model of inverter.
Root Cause Summary
Alarm 230-04C9 triggers when the TNC control detects changes to safety-critical hardware or parameters that require formal acceptance testing before operation can resume. This safety interlock prevents machine operation until proper validation of safety functions is completed through the acceptance test procedure.
Safety
- Refer to Heidenhain service manual
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Access Machine Parameters
Press MOD key, select 'Machine parameters', navigate to MP7300 series safety parameters to review current configuration.
Document original parameter values before making changes
- 2
Verify Hardware Detection
Check MP7301 (Safety module type) and MP7302 (Safety module version) match the installed hardware components.
Never bypass safety parameter checks - this compromises machine safety
- 3
Initiate Acceptance Test
Navigate to MOD > Service > Safety acceptance test menu and follow the guided procedure to validate all safety functions.
Have machine documentation ready as test procedure will verify specific safety circuits
- 4
Complete Documentation
Record acceptance test results in machine logbook and update safety parameter documentation per local safety regulations.
Call a technician if:
- ·Safety parameter expertise required
- ·Acceptance test procedure unfamiliar
- ·Local safety regulations unclear
Prevention
- Document all safety parameter changes
- Maintain regular configuration backups
- Follow proper shutdown procedures to prevent corruption
- Schedule acceptance testing during planned maintenance
Common Mistakes
- Attempting to bypass acceptance test
- Modifying safety parameters without documentation
- Ignoring related safety alarms
- Using unauthorized configuration backups
Related Alarms
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Always verify with your machine manual or a certified technician before performing service procedures.