EMX IRB-4X-2 User manual

IRB-4X-2™
Thru Beam Photoeye
Instruction Manual
This 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 from the RX (receiver) to the gate or door
operator that the beam is, or is not obstructed. The IRB-4X-2 operates up to 115 feet. The red alignment
indicator on the RX 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-2 according to
instructions from the gate or door operator manufacturer. Comply with all applicable
codes and safety regulations.
The IRB-4X-2 is not UL compliant. This photoeye will not work with gate or door operators
that require monitored safety devices.
Ordering Information
•IRB-4X2 EMX-1250-1
•IRB-MON2-4X2-HD-GREY (Grey powder-coated aluminum protective hoods)EMX-1915-1
•IRB-MON2-4X2-HD-GOLD (Gold powder-coated aluminum protective hoods).EMX-1916-1
•Universal Mounting Bracket HRD-288-1
Cautions and Warnings
Specifications
Operating Range
Up to 115 ft. (35 m)
Power
12-24 VDC/AC
Current Draw of Transmitter
13 mA
Current Draw of Receiver
35 mA standby, 13 mA detect
Surge Protection
MOV
Relay Output Configuration
Form C contacts (NO, COM, NC)
Relay Contact Rating
1 A at 24 VDC
Operating Temperature
-40° to 170°F (-40° to 77°C)
Dimensions (L x W x H)
3.6” (91 mm) x 2.9” (74 mm) x 2.9” (74 mm)
Connections
“Removable” screw terminal for easy wiring
TM
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Installation
1. MOUNTING: Remove the covers. Determine your
mounting height and mount housing with 4 screws
(not supplied) that go through the inside of the 4
corner holes in the housing (the same holes where
the plastic cover screws came out of).
2. WIRING: Pull up on and remove the green screw
terminal for easy wiring. Connect 12-24 VDC/AC
power to the “+ -“ TX (transmitter) terminals and “+
PWR -” RX (receiver) terminal. The power input
terminals are not polarity sensitive. Wire the relay
COM and then either the NC or NO to the operator
per the operator manual.
3. OPTIONAL: You may install the optional sunshield
on the receiver as shown to the right in case of sun
interference or cross talk.
4. POWER: Apply power to the TX and RX.
5. SENSITIVITY: Adjust the sensitivity potentiometer
as needed by turning clockwise to increase gain or
counter clockwise to decrease. Use the minimum
sensitivity setting needed to achieve reliable
detection.
Board Diagram
TX - Power LED
RX - Power LED
RX - Obstruction LED
RX - Sensitivity Potentiometer
CCW = min
CW = max
Sunshield Installed
Optional Sunshield
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6. TEST OBSTRUCTION: Place an obstruction (such as your hand) between the TX and RX and the
RX’s OBS LED should TURN ON when obstructed (and turn off when not obstructed and aligned).
Test at different distances.
LED Indicators
Transmitter PWR - Green LED on
Power
Receiver PWR - Green LED on
Power
Receiver OBS - Red LED on
Beam blocked or
not aligned
7. TEST OPERATOR FUNCTIONALITY:Power up the
entire gate or door system and ensure the
photoeye properly stops the system when
obstructed.
•If IRB-4X-2 is aligned but not
detecting an obstruction, consider
slowly reducing
the RX sensitivity (counter-clockwise)
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 RX
bottom right circuit board mounting hole labeled “Earth
Ground” to a wire connected to earth ground. Do not
connect unless necessary. The majority of the time
this is not needed.
8. SECURE COVERS: Using the provided plastic screws secure the cover snug (don’t overtighten
them).
mounting screws
cover screws
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Symptom
Possible Cause
Solution
Does not detect obstruction
Sensitivity is too high
Signal is reflecting off another
surface
Decrease sensitivity
(potentiometer counter
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 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
1. Wire EGND to Rx
mounting hole
2. Check for nearby sources
of interference (Ex. Other
photoeyes or motors)
3. Lower sensitivity
potentiometer
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
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