Possible causes
• Beam interrupted
• Beam test inadvertently enabled
• IR PE beams faulty, misaligned or disconnected
• Damaged Safe Common input
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
• Disable the Beam Test feature under Menu 6: IR Beams
• Ensure that the safety PE beams are in working order and correctly wired
• Replace faulty controller