Types Of Digital Output Units - Omron NX-ID User Manual

7 Digital Output Units
7-1

Types of Digital Output Units

Digital Input Units are parts of NX Units, and process outputs of digital signals (ON/OFF signals).
The Digital Output Unit types are described below.
Transistor Output Units (Screwless Clamping Terminal Block, 12 mm
Width)
Model
NX-OD2154
NX-OD2258
NX-OD3121
NX-OD3153
NX-OD3256
NX-OD3257
NX-OD3268
NX-OD4121
NX-OD4256
NX-OD5121
NX-OD5256
7 - 2
Num
Maximum
ber
Internal I/O value of
of
common load cur-
poin
rent
ts
NPN
2
0.5 A/point,
point
1 A/Unit
PNP
s
NPN
0.5 A/point,
2 A/Unit
4
point
s
PNP
2 A/point, 8
A/Unit
NPN
8
point
s
PNP
0.5 A/point,
4 A/Unit
NPN
16
point
s
PNP
Rated volt- I/O refresh-
age ing method
Output
refreshing
24 VDC with speci-
fied time
stamp only
12 to 24
VDC
24 VDC
Switching
Synchro-
nous I/O
refreshing
and
Free-Run
12 to 24
refreshing
VDC
24 VDC
12 to 24
VDC
24 VDC
NX-series Digital I/O Unit User's Manual (W521)
ON/OFF
response Reference
time
P. A-40
300 ns
max./300 ns
P. A-42
max.
0.1 ms
max./0.8 ms P. A-44
max.
300 ns
max./300 ns P. A-46
max.
0.5 ms
max./1.0 ms P. A-48
max.
300 ns
max./300 ns P. A-50
max.
0.5 ms
max./1.0 ms P. A-52
max.
0.1 ms
max./0.8 ms P. A-54
max.
0.5 ms
max./1.0 ms P. A-56
max.
0.1 ms
max./0.8 ms P. A-58
max.
0.5 ms
max./1.0 ms P. A-60
max.