Omron NX-OD5256 User Manual

7 Digital Output Units
7 - 20
NX-series Digital I/O Unit User’s Manual (W521)
7-5 Push-pull Output
The Digital Output Units with the ON/OFF response time of 1 μs or less use a push-pull output to
increase the speed of the output ON/OFF response.
For this type of the Output Units, use the single load power supply for the I/O power and connected
external devices.
If multiple power supplies are used, the current may flow into the output bits via the diodes built in the
I/O circuit and cause the Output Units to malfunction.
 Good Example
 Bad Example
Three-wire
device
Additional I/O Power
Supply Unit
Transistor Output Unit
Additional I/O
Power Supply
Unit
Transistor
Output Unit
24 VDC
Three-wire
sensor
IOV
IOG
IOV
IOG
IOV
IOG
IOV
IOG
0
IOG
IOV
IOV
A1 B1
A8 B8
2
IOG
1
IOG
IOV
IOV
3
IOG
IOV
IOG
28.8V DC
A1 B1
A8 B8
24 VDC
IOV
IOG
IOV
IOG
IOV
IOG
IOV
IOG
IOV
IOG
0
IOG
IOV
IOV
A1 B1
A8 B8
2
IOG
1
IOG
IOV
IOV
3
IOG
OV
2
I
O
G
O
G
I
O
G
V
B1
1
IO
Three-wire
device
Additional I/O
Power Supply
Unit
Transistor
Output Unit
24 VDC
Three-wire
sensor
28.8V DC
24 VDC
Additional I/O Power
Supply Unit
Transistor Output Unit
A1 B1
A8 B8

Omron NX-OD5256 Specifications

General

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