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4 Installation and Wiring
NX-series Digital I/O Unit User’s Manual (W521)
4
-4 Wiring
E
x
amp
les
4
4-
4-1 Wiring the Inpu
t Unit
s
Use the following information for reference when selecting or connecting input devices.
DC Input Units
The following types of DC input devices can be connected.
Wiring to the DC Input Units (When I/O Power Is Supplied from an
External Source)
DC Input Unit
Output
7 mA
0 V
+
DC Input Unit
Output
7 mA
0 V
+
Current
regulator
+
IN
COM
DC Input Unit
DC Input Unit
DC Input Unit
Output
7 mA
0 V
+
Two-wire DC output
NPN open-collector output
DC Input Unit
COM
IN
Contact output
NPN current output
PNP current output
Voltage output
• The circuit below should NOT be used for I/O devices having a voltage output.
IN
Output
0 V
+
COM
Output
0 V
+
IN
COM
DC Input Unit
+
IN
IN
COM
COM
IN
COM
Sensor
Power
Supply
Sensor
Power
Supply
Sensor
Power
Supply
Sensor
Power
Supply
Sensor
Power
Supply
Sensor
Power
Supply
Summary of Contents for NX-IA3117
Page 34: ...Sections in this Manual 32 NX series Digital I O Unit User s Manual W521...
Page 52: ...1 Features and System Configuration 1 18 NX series Digital I O Unit User s Manual W521...
Page 56: ...2 Specifications 2 4 NX series Digital I O Unit User s Manual W521...
Page 152: ...5 I O Refreshing 5 36 NX series Digital I O Unit User s Manual W521...
Page 204: ...8 Digital Mixed I O Units 8 8 NX series Digital I O Unit User s Manual W521...
Page 224: ...9 Troubleshooting 9 20 NX series Digital I O Unit User s Manual W521...
Page 230: ...10 Inspection and Maintenance 10 6 NX series Digital I O Unit User s Manual W521...
Page 337: ...I 1 I NX series Digital I O Unit User s Manual W521 Index...
Page 340: ...I 4 NX series Digital I O Unit User s Manual W521 Index...
