Hitachi WJ200-001S Quick Reference Manual page 34

The two diagrams below show input wiring circuits using an external supply. If using the
"Sinking Inputs, External Supply" in below wiring diagram, be sure to remove the jumper
wire, and use a diode (*) with the external supply. This will prevent a power supply
contention in case the jumper wire is accidentally placed in the incorrect position. For the
"Sourcing Inputs, External Supply", please connect the jumper wire as drawn in the
diagram below.
Sinking Inputs, External Supply
Jumper wire
= Removed
Field device
+
24V
-
GND
1
7
Open collector outputs,
NPN transistors
Sourcing Inputs, External Supply
Jumper wire
= Removed
PNP transistor
sourcing outputs
Field device
1
7
+
24V
-
GND
*
24V
+
-
Logic GND
Input switches
* Note: Make sure to remove the j
an external power supply.
24V
+
-
Input switches
32
WJ200
P24
Input common
PLC
L
1
Input
circuits
7
umper wire
WJ200
P24
Input common
PLC
L
1
Input
circuits
7
24V
+
-
in case of using
24V
+
-