EMX Industries, Inc. Tech support: 216-518-9889 4/4
IRB-4X_Rev2.1_062320 technical@emxinc.com
Does not detect obstruction
Sensitivity is too high
Signal is reflecting off another
surface
Decrease sensitivity
potentiometer clockwise.
Check area for highly reflective
surfaces.
Receiver red LED on
continuously, indicating an
obstruction when one is not
present
Sensitivity is too low
Transmitter does not have
power
Receiver does not “see”
transmitter
Increase sensitivity
potentiometer counter -
clockwise.
Check power source of
transmitter.
Make sure transmitter and
receiver are aligned.
Receiver activates but does not
transmit signal to operator
Faulty connection between
receiver and operator control
input
Verify all wires and terminal
connections.
Output relay chatters constantly
between open and close
See step 10 under Installation
and check if any reflective
surfaces could be sending a
signal into the receiver sensor.
EMX Industries, Inc. products have a warranty against defects in materials and workmanship for a period
of two years from date of sale to our customer.
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