Hey Julis, I believe that it is something else.
FE65, Wire breakage at the output for the electro-magnetic brake
When the brake is driven (clocked), the LAS module monitors this clocking process, i.e. the continuous 1/0 change is checked internally at output X10.3 (closed brake circuit, no wire breakage).
If this is not the case, the system recognises this as wire breakage. The LAS module stops issuing the "Brake released" signal (X10.23) to the FPS. This means that travel is blocked.
Check the wiring and brake (see "LAS module, Checking the electro-magnetic brake").
I'll this will help you further
Regards
Marc b