Omron Sysmac NX-PD1000 User Manual page 70

4 Installation and Wiring
Power supply
name
I/O power sup-
ply
The following are wiring diagrams (examples) for each power supply.
NX-series NX1P2 CPU Unit
Unit power
supply
terminals
I/O power supply terminals
Unit power
Additional I/O Power Supply Unit
supply
(24 VDC)
4 - 10
This power is supplied by one of the following two methods.
• Supply from the NX bus
This power is supplied through the NX bus connectors by connecting an I/O power supply to
the I/O power supply terminals on the Additional I/O Power Supply Units.
• Supply from external source
This power is supplied to the Units from an external source.
I/O power is supplied by connecting an I/O power supply to the I/O power supply terminals
on the Units.
Refer to data sheet of the user's manual for the supply methods that you will use for each NX
Unit models.
Refer to A-1 Data Sheet on page A-2 for the supply method for each System Unit model.
(Example) DC Input Unit
24 VDC
I/O power
supply
Additional I/O
Power Supply Unit
A1
IOV
IOG
IOV
IOG
A8
NX Unit
NX Unit power supply
Internal power
supply circuit
I/O power
supply
Description
24 VDC
Unit power
supply
Additional NX Unit
Power Supply Unit
A1
B1 A1 B1
IOV UV UV
IOV
IOG
IOG UG UG
IOV NC NC
IOG IOG
IOG
B8 A8 B8 A8
Additional NX Unit
Power Supply Unit
The I/O power
supply is
separated.
To external
External
devices
output
device
I/O power
supply
I/O power supply
(Supply from external source)
NX-series System Units User's Manual (W523)
DC
Two-wire
Input Unit
sensor
B1
1
0
IOV
Three-wire
IOG
sensor
2 3
IOV IOV
B8
NX Unit power supply
The I/O power
supply is not
separated.
End Cover
To external devices
Additional I/O Power Supply Unit