Types Of Digital Output Units - Omron NX-ID3343 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-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
4
0.5 A/point,
point
2 A/Unit
s
PNP
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
12 to 24
Free-Run
VDC
refreshing
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-26
300 ns
max./300 ns
P. A-28
max.
0.1 ms
max./0.8 ms P. A-29
max.
300 ns
max./300 ns P. A-30
max.
0.5 ms
max./1.0 ms P. A-31
max.
300 ns
max./300 ns P. A-32
max.
0.1 ms
max./0.8 ms P. A-34
max.
0.5 ms
max./1.0 ms P. A-35
max.
0.1 ms
max./0.8 ms P. A-36
max.
0.5 ms
max./1.0 ms P. A-37
max.