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Ensures machine safety in an explosive atmosphere

EB3N Safety Relay Barrier 

Explosion

Protection

Safety

 

+

 

Machine 

Safety

First ever in the world! Safety relay barrier rated by Japan TIIS ([Exia] II C) and  

Machine Safety Standard ISO 13849-1 (PLe, Cat 4)

 

In an explosive atmosphere, safety input devices can 

be connected to the EB3N to build a safety system.

Explosion  

Protection Safety

Machine 

Safety

EB3N Safety Relay Barrier

Yes

Yes

Conventional Contact  

Signal Transducer

Yes

EB3N ensures explosion protection safety and machine safety

Safety Input Device EB3N Safety Relay Barrier Safety Control Device Safety Standards

Explosion Protection Safety

Yes

Yes

Yes

Machine Safety

Yes

Yes

Yes

Yes

Conventional system does not ensure machine safety

Safety Input Device Contact Signal Transducer (EB3C) Safety Control Device Safety Standards

Explosion Protection Safety

Yes

Yes

Yes

Machine Safety

Yes

Yes

Combining a conventional contact signal transducer with safety input devices, such as emergency stop switches or interlock 

switches, and safety control devices such as safety relay modules, safety controllers, or safety PLCs will also meet explosion 

protection safety, but does not meet machine safety.

Hazardous Area

 

Emergency stop switch, 

Interlock switch

Non-hazardous Area

EB3N

 

Safety relay module, 

Safety controller

Motor, 

etc.

Safety contactor 

Intrinsically Safe Explosion-proof

Interlock Switch

Emergency Stop Switch

Hazardous Area

 

Emergency stop switch, 

Interlock switch

Non-hazardous Area

Contact signal 

transducer

 

Safety relay module, 

Safety controller

Safety contactor 

EB3C relay barrier

Motor, 

etc.

By combining the EB3N safety relay barrier with safety input devices, such as emergency stop switches or interlock switches, 

and contactors compliant with safety standards, explosion protection safety and machine safety can be achieved. In addition, 

safety control devices, such as safety relay modules or safety controllers, can also be combined to build a safety system.

(10/02/05)

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