Page top

NX-OD / OC

NX-series Digital Output Units

NX-OD / OC

A Wide Range of Digital Output Units from General Purpose use to High- Speed Synchronous Control

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 Output Units

Transistor Output Unit (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
3186_lu_1_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,
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
3186_lu_6_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,
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
3186_lu_2_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,
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
3186_lu_7_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,
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
3186_lu_3_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
3186_lu_8_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

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.

Connection Patterns for Connector-Terminal Block Conversion Units

Pattern Configuration Number of connectors Branching
A 3186_lu_9_1 1 None
B 3186_lu_9_2 2 branches

Connections to Connector-Terminal Block Conversion Units

Unit I/O
capacity
Number of
connectors
Polarity Connection
pattern
Number of
branches
Connecting
Cable
Connector-Terminal
Block
Conversion Unit
Common
terminal
NX-OD5121-5 16
outputs
1 MIL
connector
NPN A None XW2Z-[][][]X XW2B-20G4 None
A None XW2Z-[][][]X XW2B-20G5 None
A None XW2Z-[][][]X XW2D-20G6 None
A None XW2Z-[][][]X XW2R-J20G-T None
NX-OD5256-5 16
outputs
1 MIL
connector
PNP A None XW2Z-[][][]X XW2B-20G4 None
A None XW2Z-[][][]X XW2B-20G5 None
A None XW2Z-[][][]X XW2D-20G6 None
A None XW2Z-[][][]X XW2R-J20G-T None
NX-OD6121-5 32
outputs
1 MIL
connector
NPN A None XW2Z-[][][]K XW2B-40G4 None
A None XW2Z-[][][]K XW2B-40G5 None
A None XW2Z-[][][]K XW2D-40G6 None
A None XW2Z-[][][]K XW2R-J40G-T None
B 2 XW2Z-[][][]N XW2B-20G4 (2 Units) None
B 2 XW2Z-[][][]N XW2B-20G5 (2 Units) None
B 2 XW2Z-[][][]N XW2C-20G6-IO16 (2 Units) Yes
B 2 XW2Z-[][][]N XW2D-20G6 (2 Units) None
B 2 XW2Z-[][][]N XW2F-20G7-OUT16 (2 Units) Yes
B 2 XW2Z-[][][]N XW2R-J20G-T (2 Units) None
NX-OD6121-6 32
outputs
1 Fujitsu
connector
NPN A None XW2Z-[][][]B XW2B-40G4 None
A None XW2Z-[][][]B XW2B-40G5 None
A None XW2Z-[][][]B XW2D-40G6 None
A None XW2Z-[][][]B XW2R-J40G-T None
A None XW2Z-[][][]BU XW2D-40C6 None
B 2 XW2Z-[][][]L XW2B-20G4 (2 Units) None
B 2 XW2Z-[][][]L XW2B-20G5 (2 Units) None
B 2 XW2Z-[][][]L XW2C-20G6-IO16 (2 Units) Yes
B 2 XW2Z-[][][]L XW2D-20G6 (2 Units) None
B 2 XW2Z-[][][]L XW2F-20G7-OUT16 (2 Units) Yes
B 2 XW2Z-[][][]L XW2R-J20G-T (2 Units) None
NX-OD6256-5 32
outputs
1 MIL
connector
PNP A None XW2Z-[][][]K XW2B-40G4 None
A None XW2Z-[][][]K XW2B-40G5 None
A None XW2Z-[][][]K XW2D-40G6 None
A None XW2Z-[][][]K XW2R-J40G-T None
B 2 XW2Z-[][][]N XW2B-20G4 (2 Units) None
B 2 XW2Z-[][][]N XW2B-20G5 (2 Units) None
B 2 XW2Z-[][][]N XW2C-20G6-IO16 (2 Units) Yes
B 2 XW2Z-[][][]N XW2D-20G6 (2 Units) None
B 2 XW2Z-[][][]N XW2F-20G7-OUT16 (2 Units) Yes
B 2 XW2Z-[][][]N XW2R-J20G-T (2 Units) None