Omron Sysmac NX-PD1000 - Page 91

Unit name Function
I/O Power Supply Con-
nection Unit
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.
I/O power
supply
DC Input Units
(NPN type)
Two-wire sensor*
(e.g., limit switch)
Communications
Coupler Unit
NX Unit
Three-wire sensor
with NPN output*
(e.g., photoelectric sensor
or proximity sensor)
Brown (White)
Blue (Black)
Black (White)
Brown (Red)
Blue (Black)
I/O Power Supply
Connection Unit
(16 IOG terminals)
Example of NPN type
Not enough I/O power
supply terminals
I/O Power Supply
Connection Units
IO
V
A1
A8
B1
B8
A1
A8
B1
B8
A1
A8
B1
B8
IOV
IO
V
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
1
9
7
5
3
13
11
15
0
8
6
4
2
12
10
14
I/O power supply is not separated at
the I/O Power Supply Connection Units.
Additional I/O
Power Supply Unit
Unit power
supply
I/O power
supply
Internal
power
supply
circuit
I/O Power Supply
Connection Unit
(16 IOV terminals)
* Wire colors have been changed according to revisions in the JIS standards for pho-
toelectric and proximity sensors. The colors in parentheses are the wire colors prior to
the revisions.
4 Installation and Wiring
4-19
NX-series System Units User's Manual (W523)
4-3 Wiring the Power Supply to the Slave Terminal
4
4-3-3 Power Supply-related Units and Wiring Methods