EMX IRB-4X User manual

EMX Industries, Inc. Tech support: 216-518-9889 1/4
IRB-4X_Rev2.1_062320 [email protected]
IRB-4X™
Thru Beam Photoeye
Instruction Manual
The IRB-4X thru beam photoeye is an external entrapment protection device type B1, non-contact sensor
for use with automatic gates and doors. The photoeye provides a signal to the gate or door operator that
the beam is or is not obstructed. The IRB-4X operates up to 115 feet in a weather-proof NEMA 4X housing.
A red alignment indicator on the receiver provides status information at a glance, making set-up and
alignment easy.
This product is an accessory or part of a system. Install the IRB-4X according to
instructions from the gate or door operator manufacturer. Comply with all applicable
codes and safety regulations.
The IRB-4X is not UL compliant. This photoeye will not work with gate or door operators
that require monitored safety devices.
Ordering Information
•IRB-4X KIT Thru beam photoeye kit, includes transmitter, receiver, protective hoods,
and sunshield
•IRB-HD-SET Gold anodized aluminum protective hoods
•IRB-SH-SET Gray powder-coated steel protective hoods
Cautions and Warnings
Specifications
Operating Range
Up to 115 ft. (35 m)
Power
12-24 VDC/AC
Current Draw of Transmitter
37 mA
Current Draw of Receiver
23 mA standby, 17 mA detect
Surge Protection
Thermal fuse
Relay Output Configuration
Form C contacts (NO, COM, NC)
Relay Contact Rating
1 A at 24 VDC / 120 VAC
Operating Temperature
-40° to 170°F (-40° to 77°C)
Dimensions (L x W x H)
2.3” (57 mm) x 2.6” (65 mm) x 3.7” (94 mm)
Environmental Rating
NEMA 4X
TM

EMX Industries, Inc. Tech support: 216-518-9889 2/4
IRB-4X_Rev2.1_062320 [email protected]
Installation
1. Knock out the perforated hole on the transmitter
and receiver housing that will be used to
wire through. Be careful not to damage
the electronic circuit board when knocking out
the hole.
2. Connect 12-24 VDC/AC power to the
“Power Input” terminals on the transmitter
(marked “TX”) and receiver (marked “RX”).
The power input terminals are not polarity
sensitive.
3. Install the optional sunshield on the receiver
as shown to the right in case of solar interference
or cross talk.
4. Connect the Common (COM) to the control input
terminal per the operator manufacturer.
5. Connect either the Normally Open (NO) or
Normally Closed (NC) as needed to the control
input terminal per the operator manufacturer.
6. Adjust the sensitivity potentiometer as needed by turning counter clockwise to increase gain.
Use the minimum sensitivity setting needed to achieve reliable detection.
Board Diagram

EMX Industries, Inc. Tech support: 216-518-9889 3/4
IRB-4X_Rev2.1_062320 [email protected]
7. Make sure the covers are attached and
closed tight using all four plastic screws
provided. The wiring to the enclosure must
enter via UL listed watertight fitting such as a
strain relief or watertight conduit connector.
8. Verify that the IRB-4X transmitter and receiver
are aligned and apply power.
LED Indicators
Green transmitter LED on
Power
Green receiver LED on
Power
Red receiver LED on
Beam blocked or not aligned
9. Place an obstruction (ex. hand) between the IRB-4X transmitter and receiver. The red LED on the
receiver will turn on. Check the operator control board and verify that the safety input is recognized
by the operator. Test the beam with an obstruction between the transmitter and receiver
at multiple distances to confirm proper operation.
10. Remove the obstruction and red LED will turn off.
•If IRB-4X is aligned but not detecting an obstruction, consider slowly reducing
the sensitivity (clockwise) on the receiver until the obstruction is detected.
This may be applicable for installations with a detection zone of less than 20 ft.
•On some variable frequency drives and noisy installations, it may be necessary to
connect the bottom right mounting hole labeled “Earth Ground” to a wire connected
to earth ground. Do not connect unless necessary.
TIP:
mounting screws
cover screws

EMX Industries, Inc. Tech support: 216-518-9889 4/4
IRB-4X_Rev2.1_062320 [email protected]
Symptom
Possible Cause
Solution
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
Interference
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.
Troubleshooting
Warranty