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NX-ID / IA / OD / OC / MD

NX-series Digital I/O Unit

NX-ID / IA / OD / OC / MD

A wide range of digital I/O units from general purpose use to high-speed synchronous control

Model Number Structure

NX-ID / IA / OD / OC / MD Lineup 1

Ordering Information

International Standards

  • The standards are abbreviated as follows: U: UL, U1: UL (Class I Division 2 Products for Hazardous Locations), C: CSA, UC: cULus, UC1: cULus (Class I Division 2 Products for Hazardous Locations), CU: cUL, N: NK, L: Lloyd, CE: EU Directives, RCM: Regulatory Compliance Mark, and KC: KC Registration.
  • Contact your OMRON representative for further details and applicable conditions for these standards.

Digital Input Units

DC Input Units (Screwless Clamping Terminal Block, 12 mm Width)

Unit
type
Product
name
Specification Model Stand-
ards
Number
of
points
Internal
I/O
common
Rated
input
voltage
I/O refreshing method ON/OFF
response
time
NX-
series
Digital
Input
Unit
DC
Input
Unit
3185_lu_2_1
4
points
NPN 12 to
24 VDC
Switching Synchronous I/O
refreshing and Free-Run
refreshing
20 μs max./
400 μs max.
NX-ID3317 UC1,
N, L,
CE,
RCM,
KC
24 VDC 100 ns max./
100 ns max.
NX-ID3343
Input refreshing with input
changed time only *
NX-ID3344
PNP 12 to
24 VDC
Switching Synchronous I/O
refreshing and Free-Run
refreshing
20 μs max./
400 μs max.
NX-ID3417
24 VDC Input refreshing with input
changed time only *
100 ns max./
100 ns max.
NX-ID3443
NX-ID3444
8
points
NPN Switching Synchronous I/O
refreshing and Free-Run
refreshing
20 μs max./
400 μs max.
NX-ID4342
PNP NX-ID4442
16
points
NPN NX-ID5342
PNP NX-ID5442

* To use input refreshing with input changed time, the NJ-series CPU Unit with unit version 1.06 or later, EtherCAT Coupler
  Unit with unit version 1.1 or later, and Sysmac Studio version 1.07 or higher are required.

DC Input Unit (M3 Screw Terminal Block, 30 mm Width)

Unit
type
Product
name
Specification Model Stand-
ards
Number
of points
Internal
I/O
common
Rated
input
voltage
I/O refreshing
method
ON/OFF
response
time
NX-
series
Digital
Input
Unit
DC Input
Unit
3185_lu_3_1
16 points For both
NPN/PNP
24 VDC Switching Synchronous
I/O refreshing and
Free-Run refreshing
20 μs max./
400 μs max.
NX-ID5142-1 UC1, N,
CE,
RCM,
KC

DC Input Units (MIL Connector, 30 mm Width)

Unit
type
Product
name
Specification Model Stand-
ards
Number
of points
Internal
I/O
common
Rated
input
voltage
I/O refreshing
method
ON/OFF
response
time
NX-
series
Digital
Input
Unit
DC Input
Unit
3185_lu_4_1
16 points For both
NPN/PNP
24 VDC Switching Synchronous
I/O refreshing and
Free-Run refreshing
20 μs max./
400 μs max.
NX-ID5142-5 UC1, N,
CE,
RCM,
KC
32 points NX-ID6142-5

DC Input Unit (Fujitsu Connector, 30 mm Width)

Unit
type
Product
name
Specification Model Stand-
ards
Number
of points
Internal
I/O
common
Rated
input
voltage
I/O refreshing
method
ON/OFF
response
time
NX-
series
Digital
Input
Unit
DC Input
Unit
3185_lu_5_1
32 points For both
NPN/PNP
24 VDC Switching Synchronous
I/O refreshing and
Free-Run refreshing
20 μs max./
400 μs max.
NX-ID6142-6 UC1, N,
CE,
RCM,
KC

AC Input Unit (Screwless Clamping Terminal Block, 12 mm Width)

Unit
type
Product
name
Specification Model Stand-
ards
Number
of points
Rated input voltage I/O refreshing
method
ON/OFF
response time
NX-
series
Digital
Input
Unit
AC Input
Unit
3185_lu_6_1
4
points
200 to 240 VAC, 50/60 Hz
(170 to 264 VAC, ±3 Hz)
Free-Run
refreshing
10 ms max./
40 ms max.
NX-IA3117 UC1, N,
CE,  
RCM,
KC

Digital Output Units

Transistor Output Units (Screwless Clamping Terminal Block, 12 mm Width)

Unit
type
Product
name
Specification Model Stand-
ards
Number
of
points
In-
ternal
I/O
com-
mon
Maximum
value of
load
current
Rated
volt-
age
I/O
refreshing
method
ON/OFF
response
time
NX-
series
Digital
Output
Unit
Tran-
sistor
Output
Unit
3185_lu_7_1
2
points
NPN 0.5 A/
point,
1 A/Unit
24
VDC
Output
refreshing with
specified time
stamp only *
300 ns max./
300 ns max.
NX-OD2154 UC1,
N, L,
CE,
RCM,
KC
PNP NX-OD2258
4
points
NPN 0.5 A/
point,
2 A/Unit
12 to
24 VDC
Switching
Synchronous
I/O refreshing
and Free-Run
refreshing
0.1 ms max./
0.8 ms max.
NX-OD3121
24 VDC 300 ns max./
300 ns max.
NX-OD3153
PNP 0.5 ms max./
1.0 ms max.
NX-OD3256
300 ns max./
300 ns max.
NX-OD3257
2 A/point,
8 A/Unit
0.5 ms max./
1.0 ms max.
NX-OD3268 UC1, N,
CE,
RCM,
KC
8
points
NPN 0.5 A/
point,
4 A/Unit
12 to
24 VDC
0.1 ms max./
0.8 ms max.
NX-OD4121 UC1,
N, L,
CE,
RCM,
KC
PNP 24 VDC 0.5 ms max./
1.0 ms max.
NX-OD4256
16
points
NPN 12 to
24 VDC
0.1 ms max./
0.8 ms max.
NX-OD5121
PNP 24 VDC 0.5 ms max./
1.0 ms max.
NX-OD5256

* To use output refreshing with specified time stamp, the NJ-series CPU Unit with unit version 1.06 or later, EtherCAT
  Coupler Unit with unit version 1.1 or later, and Sysmac Studio version 1.07 or higher are required.

Transistor Output Units (M3 Screw Terminal Block, 30 mm Width)

Unit
type
Product
name
Specification Model Stand-
ards
Number
of
points
In-
ternal
I/O
common
Maximum
value of
load
current
Rated
volt-
age
I/O
refreshing
method
ON/OFF
response
time
NX-
series
Digital
Output
Unit
Tran-
sistor
Output
Unit
3185_lu_8_1
16
points
NPN 0.5 A/
point,
5 A/Unit
12 to
24 VDC
Switching
Synchronous
I/O refreshing
and Free-Run
refreshing
0.1 ms max./
0.8 ms max.
NX-OD5121-1 UC1, N,
CE,
RCM,
KC
PNP 24 VDC 0.5 ms max./
1.0 ms max.
NX-OD5256-1

Transistor Output Units (MIL Connector, 30 mm Width)

Unit
type
Product
name
Specification Model Stand-
ards
Number
of
points
In-
ternal
I/O
common
Maximum
value of
load
current
Rated
volt-
age
I/O
refreshing
method
ON/OFF
response
time
NX-
series
Digital
Output
Unit
Tran-
sistor
Output
Unit
3185_lu_9_1
16
points
NPN 0.5 A/
point,
2 A/Unit
12 to
24 VDC
Switching
Synchronous
I/O refreshing
and Free-Run
refreshing
0.1 ms max./
0.8 ms max.
NX-OD5121-5 UC1, N,
CE,
RCM,
KC
PNP 24 VDC 0.5 ms max./
1.0 ms max.
NX-OD5256-5
32
points
NPN 0.5 A/
point,
2 A/
common,
4 A/Unit
12 to
24 VDC
0.1 ms max./
0.8 ms max.
NX-OD6121-5
PNP 24 VDC 0.5 ms max./
1.0 ms max.
NX-OD6256-5

Transistor Output Units (Fujitsu Connector, 30 mm Width)

Unit
type
Product
name
Specification Model Stand-
ards
Number
of
points
In-
ternal
I/O
common
Maximum
value of
load
current
Rated
volt-
age
I/O
refreshing
method
ON/OFF
response
time
NX-
series
Digital
Output
Unit
Tran-
sistor
Output
Unit
3185_lu_10_1
32
points
NPN 0.5 A/
point,
2 A/
common,
4 A/Unit
12 to
24 VDC
Switching
Synchronous
I/O refreshing
and Free-Run
refreshing
0.1 ms max./
0.8 ms max.
NX-OD6121-6 UC1, N,
CE,
RCM,
KC

Relay Output Unit (Screwless Clamping Terminal Block, 12 mm Width)

Unit
type
Product
name
Specification Model Stand-
ards
Capacity Relay
type
Maximum switching
capacity
I/O
refreshing
method
ON/OFF
response
time
NX-
series
Digital
Output
Unit
Relay
Output
Unit
3185_lu_11_1
2
points
N.O. 250 VAC/2A (cosφ=1)
250 VAC/2A (cosφ=0.4)
24 VDC/2A
4 A/Unit
Free-Run
refreshing
15 ms max./
15 ms max.
NX-OC2633 UC1,
N, L,
CE,
RCM,
KC
N.O.+
N.C.
NX-OC2733 UC1,
N, CE,
RCM,
KC

Relay Output Unit (Screwless Clamping Terminal Block, 24 mm Width)

Unit
type
Product
name
Specification Model Stand-
ards
Number
of
points
Relay
type
Maximum switching
capacity
I/O
refreshing
method
ON/OFF
response
time
NX-
series
Digital
Output
Unit
Relay
Output
Unit
3185_lu_12_1
8
points
N.O. 250 VAC/2A (cosφ=1)
250 VAC/2A (cosφ=0.4)
24 VDC/2A
8 A/Unit
Free-Run
refreshing
15ms max./
15ms max.
NX-OC4633 UC1,
CE,
RCM,
KC

Digital Mixed I/O Units

DC Input/Transistor Output Units (MIL Connector, 30 mm Width)

Unit
type
Product
name
Specification Model Stand-
ards
Number
of
points
Internal
I/O
common
Rated
voltage
I/O
refreshing
method
ON/OFF
response
time
NX-
series
Digital
Mixed
I/O
Unit
DC
Input/
Tran-
sistor
Output
Unit
3185_lu_13_1
Outputs:
16 points
Inputs:
16 points
Outputs:
NPN
Inputs:
For both
NPN/PNP
Outputs:
12 to 24
VDC
Inputs:
24 VDCV
Switching
Synchro-
nous I/O
refreshing
and
Free-Run
refreshing
Outputs:
0.1 ms max./
0.8 ms max.
Inputs:
20 μs max./
400 μs max.
NX-MD6121-5 UC1, N,
CE,
RCM,
KC
Outputs:
PNP
Inputs:
For both
NPN/PNP
Outputs:
24 VDC
Inputs:
24 VDC
Outputs:
0.5 ms max./
1.0 ms max.
Inputs:
20 μs max./
400 μs max.
NX-MD6256-5

DC Input/Transistor Output Unit (Fujitsu Connector, 30 mm Width)

Unit
type
Product
name
Specification Model Stand-
ards
Number
of
points
Internal
I/O
common
Rated
voltage
I/O
refreshing
method
ON/OFF
response
time
NX-
series
Digital
Output
Unit
Tran-
sistor
Output
Unit
3185_lu_14_1
Outputs:
16
points
Inputs:
16
points
Outputs:
NPN
Inputs:
For both
NPN/PNP
Outputs:
12 to 24
VDC
Inputs:
24 VDC
Switching
Synchro-
nous I/O
refreshing
and
Free-Run
refreshing
Outputs:
0.1 ms max./
0.8 ms max.
Inputs:
20 μs max./
400 μs max.
NX-MD6121-6 UC1, N,
CE,
RCM,
KC

Optional Products

Product name Specification Model Standards
Unit/Terminal Block Coding Pins For 10 Units (Terminal Block: 30 pins, Unit: 30 pins) NX-AUX02 -

Product name Specification Model Standards
No. of
terminals
Terminal number
indications
Ground
terminal mark
Terminal current
capacity
Terminal Block 8 A/B None 10 A NX-TBA082 ---
12 NX-TBA122
16 NX-TBA162

Accessories

Not included.