IRB-MON Operating Instructions
11
Document no.
10280104
Troubleshooting
Symptom
Possible cause
Solution
Does not detect obstruction
of beam
Sensitivity too high
Signal is reflecting off another
surface
Adjust SENSITIVITY pot
counter-clockwise
Check area for highly reflective
surfaces
Green LED flashes
continuously (indicating an
obstruction when an
obstruction is not present)
Sensitivity too low
Transmitter does not have
power
Receiver does not “see”
transmitter
Adjust SENSITIVITY pot
clockwise
Check power source for
transmitter
Make sure transmitter and
receiver have line of sight
alignment
Receiver activates but does
not transmit signal to
operator
Faulty connection between
receiver and operator control
input
Verify all wires and terminal
connections
Receiver green LED off (1)
Transmitter too close to
receiver
Adjust SENSITIVITY pot
counter-clockwise
Increase distance between
transmitter and receiver
(1)
When transmitter is too close to the receiver the green LED will turn off, this prevents
mounting the photo eyes in close proximity.