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2 i/o circuit diagram, I/o circuit diagram -3, I/o circuit diagram – KEYENCE GL-RHG Series User Manual

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4-3

GL-RHG-M-NO4-E

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4-2

I/O Circuit Diagram

Reference

Grey wire (FE) is electrically-connected to the light curtain body case.

The light curtain body case and internal power signal lines are coupled by capacitor (3 kV, 100 pF).

Main

circuit

+24 V

Black or White

0 V

Main

circuit

+24 V

0 V

Output circuit (PNP type cable)

Brown

Blue

Black or White

Brown

Blue

Output circuit (NPN type cable)

E

xter
nal d
evic

Exte

rn

al de
vic

Input circuit (PNP type cable)

Main

circuit

Brown

Blue

(Input line)

+24 V

0 V

Main

circuit

Brown

Blue

(Input line)

+24 V

0 V

Input circuit (NPN type cable)

Non safety-related output circuit (NPN Cable / PNP Cable)

Main

circuit

+24 V

(Output wire)

0 V

Brown

External device

Blue