Heidenhain · TNC CNC Controllers
This error indicates that a spindle drive was locked. This occurs when an attempt was made to switch on a spindle drive while the guard door was open, and the permissive button was either not pressed or was not released beforehand, or due to an internal software error.
Click steps to track your progress.
Ensure the guard door is closed before attempting to activate the spindle.
If guard door must be open for a specific operation, ensure the permissive button is pressed and released correctly according to operational procedures.
Check the wiring and functionality of the permissive button; verify its electrical contacts and signal integrity.
Verify the software version of the controller and update it if a known issue related to permissive button logic exists.