Omron NX-OD5256 User Manual

4 - 13
4 Installation and Wiring
NX-series Digital I/O Unit User’s Manual (W521)
4-2 Wiring the Power Supply to the Slave Terminal
4
4-2-4 Power Supply-related Units for the NX-series
Additional I/O Power Sup-
ply Unit
This NX Unit provides additional I/O power supply.
Use this NX Unit in the following cases.
(a) When the I/O power supply capacity is insufficient
• When the total current consumption for the I/O power supply exceeds the max-
imum current of I/O power supply of the Communications Coupler Unit
• When a voltage drop in the I/O power supply causes the voltage of the I/O
power supply to go below the voltage specifications of the I/O circuits or con-
nected external devices
(b) Separating the I/O power supply
• When connected external devices have different I/O power supply voltages
• When separating the power supply systems
The NX Unit power supply of the Additional I/O Power Supply Unit is connected to
the NX Unit on the left through the NX bus connector.
Unit name Function
- When different I/O power supply voltage are used.
- When separating the power supply systems.
When the I/O power supply
becomes the following states
for the subsequent NX Units.
- When it exceeds the maximum
current of I/O power supply
- When it goes below the voltage
specifications of the connected
external devices
I/O power
supply
Unit power
supply
Case (b)
I/O power
supply
Internal
power
supply
circuit
Case (a)
Communications
Coupler Unit
NX Unit
I/O power
supply
Unit power
supply
I/O power
supply
Additional I/O
Power Supply Unit
Separated by Additional I/O
Power Supply Unit
Internal
power
supply
circuit
Communications
Coupler Unit
NX Unit Additional I/O
Power Supply Unit
Separated by Additional I/O
Power Supply Unit

Omron NX-OD5256 Specifications

General

Brand	Omron
Model	NX-OD5256
Category	I/O Systems
Language	English