User Manual
EM303B General Purpose Inverter
34
3.3.4.1 Dry contact wiring mode
Figure 3-15-a Wiring with 24V Internal Power Supply
Figure 3-15-b Wiring with External Power Supply
3.3.4.2 NPN and PNP mode
A. See Figure 3-16-a for NPN mode with 24 internal power supply
+24V
+3.3V
+
-
PLC
24V
EM303B
+3.3V
+
-
COM
X7
X1
PE
External Controller
Grounding Shield Cable
COM
1
7
Figure 3-16-a NPN Mode with 24 Internal Power Supply
B. See Figure 3-16-b for PNP mode with 24 internal power supply (Please disconnect
terminal PLC from terminal 24V)
+24V
+3.3V
+
-
PLC
24V
EM303B
+3.3V
+
-
COM
X7
X1
PE
External Controller
Grounding Shield Cable
COM
1
7
Figure 3-16-b PNP Mode with 24 Internal Power Supply
+24V
+3.3V
+
-
R2
R1
COM
X1
~
X7
K
PLC
24V
EM303B
I
+24V
+3.3V
+
-
R2
R1
COM
X1
~
X7
K
PLC
24V
EM303B
I
+
- DC