Omron NX Series Hardware User Manual page 109

Internal
power
supply
circuit
Unit power supply terminals
Unit power supply
(24 VDC)
Example of NPN type
*1. 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.
NX-series NX102 CPU Unit Hardware User's Manual (W593)
NX-series Additional
I/O Power
NX102 CPU Unit
Supply
Unit
Internal circuits
NX Unit power supply
NX bus connector
I/O power supply
I/O power supply terminals
I/O power supply
(24 VDC, etc.)
I/O Power Supply I/O Power Supply
Connection Unit Connection Unit
(IOV terminals: 16) (IOG terminals: 16)
NX-PC0020 NX-PC0010
A1 B1 A1
IOG IOG
IOV IOV
IOV IOV IOG IOG
IOV IOV IOG IOG
IOG IOG
IOV IOV
IOV IOV IOG IOG
IOG IOG
IOV IOV
IOV IOV IOG IOG
IOV IOV IOG IOG
A8 B8 A8
4 Designing the Power Supply System
NX Unit I/O I/O
Power Power
Supply Supply
Connec- Connec-
tion Unit tion Unit
I/O power supply is not
separated at the I/O
Power Supply Connection
Units.
DC Input Unit
Two-wire sensor*1
(NPN type)
(limit switches, etc.)
NX-ID5342
B1 A1 B1
Brown (White)
0 1
Blue (Black)
2 3
4 5
7
6
8 9
Three-wire sensor
10 11 with NPN output*1
(photoelectric
13
12
sensor, proximity
14 15
sensor, etc.)
B8 A8 B8
Black (White)
Brown (Red)
Blue (Black)
End
Cover
NX Unit
Not enough I/O
power supply
terminals
4
4-9