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

4-3
Wiring the Power Supply to the Slave
Terminal
This section describes how to supply power to the Slave Terminal and wiring.
4-3-1

Power Supply Types

There are the following two types of power supplies that supply power to the Slave Terminal.
Power supply
name
Unit power
supply
I/O power sup-
ply
4-3-2

Supplying Each Power Supply and Wiring

The supply method for each power supply to the NX Units is as follows.
Power supply
name
NX Unit power
supply
I/O power sup-
ply
NX-series System Units User's Manual (W523)
This is the power supply for generating the NX Unit power supply required for the Slave Termi-
nal to operate.
This is connected to the Unit power supply terminal on the Communications Coupler Unit or
on the Additional NX Unit Power Supply Unit.
The internal power supply circuit in the Communications Coupler Unit or the Additional NX
Unit Power Supply Unit generates the NX Unit power supply from the Unit power supply.
The internal circuits of the Communications Coupler Unit and NX Units operate by the NX Unit
power supply.
The NX Unit power supply is supplied to the NX Units in the Slave Terminal 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 4-3-2 Supplying Each Power Supply and Wiring on page 4-15 for the details on the
power supply methods.
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 Communications Coupler Unit or Addi-
tional NX Unit Power Supply Units.
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 Communications Coupler Unit or 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.
For the supply method that you will use for an NX Unit model, refer to the data sheet in the
user's manual for the NX Unit or NX-series Data Reference Manual (Cat. No. W525).
Refer to A-1 Data Sheet on page A-2 for the supply method for each System Unit model.
4 Installation and Wiring
Description
Description
4
4-15