Heidenhain · NC Control
The CCU shut-off signal '-N0' fails to switch to a high level, and its measured status is at a 'low' level. This indicates a potential software error or a hardware defect.
Click steps to track your progress.
Power cycle the NC control to attempt a reset of the safety circuit and signal states.
Check the wiring and connections related to the -N0 signal path for any damage, loose terminals, or improper shielding.
Inspect the controller board (CCU) for any visible damage, burnt components, or signs of hardware malfunction.
Verify the safety software configuration and parameters related to the -N0 signal's inactive state and its expected behavior.
If available, use a multimeter or oscilloscope to monitor the -N0 signal level and confirm it remains low when expected to transition to high.