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5 Installation and Wiring
NX-series Safety Control Unit User’s Manual (Z930)
5-2 Wiring the Power Supply to the Slave Terminal
5
5-2-4 NX-series Power Supply-related Units
I/O Power Supply
Connection Units
This Unit is used when there are not enough I/O power supply terminals for the external
devices that are connected to NX Units such as Safety I/O Units and Analog I/O Units.
Name Function
Not enough I/O
power supply terminals
Communications
Coupler Unit
NX Unit
The I/O power supply is not separated
at the I/O Power Supply Connection Units.
The I/O power supply is not separated
at the I/O Power Supply Connection Units.
I/O Power Supply Connection Units
Additional I/O
Power Supply Unit
Additional I/O
Power Supply Unit
I/O power
supply
Unit power
supply
I/O power
supply
Internal
power
supply
circuits
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