Omron Sysmac NX-PD1000 User Manual

4-4
Wiring the Power Supply to the Com-
munication Control Unit
This section describes the methods of power supplying and wiring with NX Unit in a CPU Rack when
connecting NX Unit with NX-series Communication Control Unit.
4-4-1
Power Supply Types
There are the following two types of power supplies that supply power to the CPU Rack of the Com-
munication Control Unit.
Power supply
name
Description
Unit power
supply
This is the power supply for generating the internal power supply required for the CPU Rack to
operate.
This power supply is connected to the Unit power supply terminals on the Communication
Control Unit or Additional NX Unit Power Supply Unit.
From the Unit power supply
, the internal power supply circuit in the Communication Control
Unit generates the power supply to the internal circuit of the Communication Control Unit and
NX Unit power supply
. The internal power supply circuit in the Additional NX Unit Power Sup-
ply Unit generates the NX Unit power supply from the Unit power supply.
The internal circuits of the NX Unit operates on the NX Unit power supply.
The NX Unit power supply is supplied to the NX Units in the CPU Rack through the NX bus
connectors.
I/O power sup-
ply
This power supply is used for driving the I/O circuits of the NX Units and for the connected
external devices.
There are the following two I/O power supply methods. Either supply method used depends
on each model of NX Unit.
• Supply from the NX bus
• Supply from external source
Refer to 4-4-2 Supplying Each Power Supply and Wiring on page 4-20
for the details on the
power supply methods.
4-4-2
Supplying Each Power Supply and Wiring
The supply method for each power supply to the NX Units is as follows.
Power supply
name
Description
NX Unit power
supply
This power is supplied to the NX Units through the NX bus connectors by connecting a Unit
power supply to the Unit power supply terminals on the Communication Control Unit or Addi-
tional NX Unit Power Supply Units.
4 Installation and Wiring
4-20
NX-series System Units User's Manual (W523)

Omron Sysmac NX-PD1000 Specifications

General

Brand	Omron
Model	Sysmac NX-PD1000
Category	Controller
Language	English