EMX Industries IRB-MON Instruction Manual

EMX Industries, Inc. Tech support: 216-834-0761 1/6

IRB-MON_Rev3.0_080619 [e-mail]

IRB-MON

Universal Thru Beam Photoeye

Instruction Manual

The IRB-MON thru beam infrared 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-MON operates up to 115 feet over a
wide range of voltages (6-35 VDC and 12-24 VAC). A green alignment indicator on the receiver provides
status information at a glance, making set-up and alignment easy. The IRB-MON provides compatibility
with most operators that accommodate monitored external entrapment devices per UL325.

Cautions and Warnings

This product is an accessory or part of a system. Install the IRB-MON according to
instructions from the gate or door operator manufacturer. Comply with all applicable codes
and safety regulations.

Specifications

Operating Range

Up to 115 ft (35 m)

Power

6-35 VDC, 12-24 VAC

Current (NC and 10K Monitoring Methods)

60 mA (relay activated)

Current (Pulse Monitoring Methods)

15 mA

Surge Protection

Thermal fuse

Relay Output Operation

Light ON/Dark ON

Relay Output Configuration

Form C contacts (NO, COM, NC)

Transmitter Power Cycle

<300 mS (for use in NC or 10K monitoring)

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: 216-834-0761 2/6

IRB-MON_Rev3.0_080619 [e-mail]

Ordering Information

• IRB-MON Thru beam photoeye, includes transmitter, receiver and sunshield

• IRB-HD-SET Gold anodized aluminum protective hoods

• IRB-SH-SET Gray powder-coated steel protective hoods

• IRB-SP Nylon liquid tight strain relief connector, set of two

• IRB-S Nylon mounting screws with nuts, set of two

• IRB-BR Steel “L” shaped mounting bracket, set of two

• IRB- RX-SH Receiver sunshield

Monitoring Methods

UL325 requires continuous monitoring of all safety devices connected to gate and door operators.
Consult the gate or door operator manufacturer’s instruction manual for necessary monitoring
method.

• Normally Closed: Cycles power to the transmitter while monitoring the receiver contacts for

proper operation

• 10K Resistive Termination: Provides a measurable 10K ohm resistance across the normally open

(NO) when unobstructed

• Two-wire Pulse (2 Frequency): Provides 300Hz “heartbeat” unobstructed, 0Hz obstructed over

power supply lines

• Two-wire Pulse (3 Frequency): Provides 300Hz “heartbeat” unobstructed, 2Hz obstructed, and

0Hz failure over power supply lines

Board Diagram