Possible causes:
Opening infrared gate safety beams interrupted
Opening infrared safety beams faulty, misaligned or disconnected
Damaged Safe Common input
Possible solutions:
Ensure that no people or objects are in the path of the beam
Ensure that the Safety Open and Safety Close LEDs are illuminated – if not, the inputs can be permanently bridged to Com, or the controller can be reset to factory defaults
Bridging the safety inputs will disable all safety features and poses a safety hazard!
Ensure that the beams are in working order
Replace faulty controller