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Document no.  10060104 

 

REV 1.6   Date 1-24-17 

 

 

 

 

Product Overview 

 The IRB-4X photoeye system does not have a focusing lens and the generous 24

o

 sensing angle makes it one 

of the easiest to align. The use of the hoods is recommended to prevent distortion from rain on the lens area. 
 
 
 

 
 
 
 

Technical Specifications 

 

 

 

 

Indicators  

 

 

 

 

Controls 

 

 
 
 

 

 

 

 

 

 

 

 

 

 

 

Note (1) IRB-4X-T has been discontinued 

 
 

 
 
 
 
 
 
 
 

 Power Supply 

12-24 VDC 24 VAC 

 Power Supply Tolerance 

20% 

 Current Draw 

TX=37mA  RX= 23mA standby 17ma detect 

 Housing Material 

Polystyrene and Polycarbonate cover 
IRB-EXP aluminum epoxy coating 

 Relay Type 

Form C SPDT contact rating 1A @ 24VDC / 120VAC 

 Temperature Range 

-40F – 170F 

 Connector  

Terminal block 

 Power on Indicator 

Green LED on board 

 Detect Indicator 

Red LED 

 Power protection  

Thermal fuse 

 Environmental 

IRB-4X:   NEMA 4 
IRB-EXP: NEMA 4 & 7, NEC Class I, Groups B, C & D,Class II, Groups E, F & G CSA 
certified, CENELEC certified, EExd IIC 

 Size 

IRB-4X:   3.7” x 2.56” x 2.24”  
IRB-EXP: 4.69” x 4.5” x 3.44” 

 Detection Angle 

24

o

 

 Sensitivity Adjustment 

Potentiometer 

 Response Time  

10mS (max.) 

 Range 

3 to 115 feet 

 

Receiver 

Sensitivity 

Continuously adjustable single turn 

potentiometer figure 2 

(1)IRB-4X-T has a 0 

– 15 second relay timer to 

extend the relay output time figure 2 

 

Receiver 

Green LED                                         Red LED 

Power Indicator               Detection Indication 

 

Transmitter 

Green LED 

Power Indicator 

 

WARNING … 

Not to be used for Personnel Protection 

Never use product as sensing devices for personnel 
protection. Doing so could cause serious injury or death. 

 

These sensors do NOT include the self-checking redundant circuitry 

necessary to allow their use in personnel safety applications. A sensor failure or 
malfunction can cause either an energized or de-energized sensor output 
condition. UL 325 Non-compliant 

Summary of Contents for IRB-4X

Page 1: ...perating Instructions This product is an accessory or part of a system Always read and follow the manufacturer s instructions for the equipment you are connecting this product to Comply with all applicable codes and safety regulations Failure to do so may result in damage injury or death IRB EXP For Explosive Environments ...

Page 2: ...nmental IRB 4X NEMA 4 IRB EXP NEMA 4 7 NEC Class I Groups B C D Class II Groups E F G CSA certified CENELEC certified EExd IIC Size IRB 4X 3 7 x 2 56 x 2 24 IRB EXP 4 69 x 4 5 x 3 44 Detection Angle 24o Sensitivity Adjustment Potentiometer Response Time 10mS max Range 3 to 115 feet Receiver Sensitivity Continuously adjustable single turn potentiometer figure 2 1 IRB 4X T has a 0 15 second relay ti...

Page 3: ... counter clockwise to increase gain range is 3 to 115 feet see arrow 6 The detect Led will glow red when an obstruction occurs 7 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 Use minimum gain setting needed to achieve reliable detection ...

Page 4: ...m Possible Cause Possible Solution Holds gate open No power on transmitter or receiver Check power LEDs and power source Transmitter not working Install new transmitter Receiver not working Install new receiver Sensitivity set too low Adjust sensitivity Does not activate gate Bad connection or broken wires Check wires and connections Relay contacts burned or stuck Replace receiver Interference fro...

Page 5: ...t Transmitter board only IRB RX Replacement Receiver board only IRB BR Set of 2 L Brackets IRB HD SET Set of 2 Gold Aluminum hoods IRB SH SET Set of 2 Gray Powder coated steel hoods IRB S Set of 2 Nylon screws with nuts IRB EXP IRB Transmitter and Receiver in Explosive environment housing This manual covers the IRB 4X and IRB EXP models OBSOLETE PRODUCTS IRB 4X T IRB Transmitter and Receiver in NE...

Page 6: ...6 Document no 10060104 REV 1 6 Date 1 24 17 Installer notes ...

Page 7: ...7 Document no 10060104 REV 1 6 Date 1 24 17 ...

Page 8: ...0104 REV 1 6 Date 1 24 17 4564 Johnston Parkway Cleveland Ohio 44128 United States of America www emxinc com Technical Support 216 834 0761 technical emxinc com Sales 216 518 9888 Fax 216 518 9884 salessupport emxinc com ...

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