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 CPU Unit or Additional NX Unit Power
Supply Units.
I/O power sup-
ply
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.
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
4-10
NX-series System Units User's Manual (W523)
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