1 Features and System Configuration
1 - 12
NX-series Digital I/O Unit User’s Manual (W521)
Transistor Output Units (MIL Connector, 30 mm Width)
Model
Num-
ber of
points
Internal I/O
common
Maximum
value of
load cur-
rent
Rated volt-
age
I/O refresh-
ing method
ON/OFF
response
time
Refer-
ence
NX-OD5121-5
16
points
NPN
0.5 A/point,
2 A/Unit
12 to 24
VDC
Switching
Synchro-
nous I/O
refreshing
and
Free-Run
refreshing
0.1 ms
max./0.8 ms
max.
P. A - 3 8
NX-OD5256-5 PNP 24 VDC
0.5 ms
max./1.0 ms
max.
P. A - 4 0
NX-OD6121-5
32
points
NPN
0.5 A/point,
2 A/com-
mon, 4
A/Unit
12 to 24
VDC
0.1 ms
max./0.8 ms
max.
P. A - 4 1
NX-OD6256-5 PNP 24 VDC
0.5 ms
max./1.0 ms
max.
P. A - 4 3
Relay Output Units (Screwless Clamping Terminal Block, 12 mm
Width)
Model
Num-
ber of
points
Relay type
Maximum switching
capacity
I/O refresh-
ing method
ON/OFF
response
time
Refer-
ence
NX-OC2633
2 points
N.O.
250 VAC/2 A (cosΦ = 1),
250 VAC/2 A (cosΦ = 0.4),
24 VDC/2 A,
4 A/Unit
Free-Run
refreshing
15 ms
max./15 ms
max.
P. A - 4 5
NX-OC2733
N.O. + N.C. P. A-47