Omron NX-ID3343 User Manual page 82

4 Installation and Wiring
Unit name
I/O Power Supply Con-
nection Unit
4 - 14
This NX Unit is used when there are not enough I/O power supply terminals for the
connected external devices that are connected to NX Units such as Digital I/O Units
and Analog I/O Units.
Communications NX Unit
Coupler Unit
Internal
power
supply
circuit
I/O power
supply
Unit power
supply
Example of NPN type
I/O Power Supply I/O Power Supply
Connection Unit Connection Unit
(16 IOV terminals) (16 IOG terminals)
A1 B1 A1
IOV IOV IOG
IOV IOV IOG
IOG
IOV IOV
IOG
IOV IOV
IOG
IOV IOV
IOV IOV IOG
IOV IOV IOG
IOV
IOV IOV IOG
A8 B8 A8
* Wire colors have been changed according to revisions in the JIS standards for photoelectric
and proximity sensors. The colors in parentheses are the wire colors prior to the revisions.
Function
I/O power supply is not separated at
the I/O Power Supply Connection Units.
Additional I/O I/O Power Supply
Power Supply Unit Connection Units
I/O power
supply
DC Input Units
(NPN type)
Two-wire sensor*
(e.g., limit switch)
B1 A1 B1
IOG 0 1
IOG 2 3
IOG 5
4
7
IOG 6
IOG 8 9
11
IOG 10
Three-wire sensor
IOG 12 13
with NPN output*
14 15
IOG (e.g., photoelectric sensor
or proximity sensor)
B8 A8 B8
NX-series Digital I/O Unit User's Manual (W521)
Not enough I/O power
supply terminals
Brown (White)
Blue (Black)
Black (White)
Brown (Red)
Blue (Black)