Wiring The Power Supply To The Cpu Unit; Power Supply Types; Supplying Each Power Supply And Wiring - Omron sysmac NX Series User Manual

4-2
Wiring the Power Supply to the CPU
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 CPU Unit.
4-2-1

Power Supply Types

There are the following two types of power supplies that supply power to the CPU Rack of the CPU
Unit.
Some CPU Unit models have a circuit that requires power supply for other circuits besides NX Units.
For example, NX1P2 CPU Units require I/O power supply to drive built-in I/O output circuits.
For details on power supply for circuits other than NX Units, refer to a description of the power supply
system and types of power supplies in the hardware user's manual for the connected CPU Unit.
Power supply
name
Unit power
supply
I/O power sup-
ply
*1. For the NX1P2 CPU Unit, the Option Board power supply is also generated. The type of power supply gen-
erated by the internal power supply circuit in the CPU Unit depends on the CPU Unit model. For information
on the power supply generated by the internal power supply circuit in the connected CPU Unit, refer to a
description of the power supply system and types of power supplies in the hardware user's manual for the
CPU Unit.
4-2-2

Supplying Each Power Supply and Wiring

The supply method for each power supply to the NX Units is as follows.
NX-series System Units User's Manual (W523)
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 CPU Unit or Addi-
tional NX Unit Power Supply Unit.
From the Unit power supply, the internal power supply circuit in the CPU Unit generates the
power supply to the CPU Unit internal circuit and NX Unit power supply.
supply circuit in the Additional NX Unit Power Supply 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.
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 4-2-2 Supplying Each Power Supply and Wiring on page 4-9 for the details on the
power supply methods.
4 Installation and Wiring
Description
*1
The internal power
4-9
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