Omron GRT1 - 11-2007 Operation Manual page 96

Digital I/O Units
Wiring
GRT1-ID8 (NPN) GRT1-ID8 (NPN)
When using 3-wire sensors, wire using the GRT1-PC8 I/O Power Connection
Unit as shown in the following figure.
GRT1-PC8
3-wire sensors
Black (white)
Brown (red)
Blue (black)
V
Black (white)
V
Brown (red)
Blue (black)
G
Black (white)
V
Brown (red)
Blue (black)
V
Black (white)
Brown (red)
G
Blue (black)
If the Unit connected on the left needs to be isolated, wire using the GRT1-
PD8 I/O Power Feed Unit. When using the GRT1-PD8 I/O Power Feed Unit,
however, a maximum of seven sensors can be connected, as shown in the fol-
lowing figure.
GRT1-PD8
3-wire sensors
Black (white)
Brown (red)
Blue (black)
V
Black (white)
V
Brown (red)
Blue (black)
G
Black (white)
V
Brown (red)
Blue (black)
V
+
I/O power
G
−
supply
GRT1-ID8
V 0 1
V 2 3
G G G
V 4 5
V 6 7
G G G
GRT1-ID8
V 0 1
V 2 3
G G G
V 4 5
V 6 7
G G G
Section 4-6
3-wire sensors
Black (white)
Brown (red)
Blue (black)
Black (white)
Brown (red)
Blue (black)
Black (white)
Brown (red)
Blue (black)
Black (white)
Brown (red)
Blue (black)
3-wire sensors
Black (white)
Brown (red)
Blue (black)
Black (white)
Brown (red)
Blue (black)
Black (white)
Brown (red)
Blue (black)
Black (white)
Brown (red)
Blue (black)
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