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NX-series Digital Output Units
NX-OD/OC
CSM_NX-OD_OC_DS_E_6_3
A Wide Range of Digital Output
Units from General Purpose use to
High-Speed Synchronous Control
• Transistor and relay Output Units for the NX-series
modular I/O system.
• Connect to other NX-series I/O Units and EtherCAT
Coupler units using the high-speed NX-bus.
• Synchronous Units update their output status according
to the controller's instructions every EtherCAT cycle.
Features
•
•
•
•
•
•
•
•
High-speed I/O refreshing is possible by connecting with the NX-series EtherCAT Coupler.
Output refreshing can be synchronized with the control cycle of the Controller. (Synchronous refreshing)
ON/OFF response time of the high-speed model is 300 ns max, which enables high-speed, high-precision control.
The screwless terminal block is detachable for easy commissioning and maintenance.
Screwless clamp terminal block and Connector types (Units with MIL/Fujitsu Connectors) are significantly reduces wiring work.
Up to 16 digital outputs in a space-saving 12 mm width. (Connector Types 30 mm width)
The lineup includies 2-point, 4-point, 8-point, 16-point, and 32-point types with 3-wire, 2-wire and 1-wire connection methods.
With output refreshing with specified time stamp, the Output Unit refreshes outputs at the time specified by the program. This enables highprecision output control independent of the control cycle of the Controller.
System Configuration
Sysmac Studio
Support Software
Connection to peripheral USB port
or built-in EtherNet/IPTM port on
NJ/NX-series CPU Unit
EtherCAT master*
NJ/NX-series CPU Unit or master from
another manufacturer
Built-in EtherCAT port
Sysmac Studio
Support Software
●EtherCAT Slave Terminal
Communications cable
Ethernet cables
Peripheral USB port.
NX Series
EtherCAT Coupler Unit
NX-ECC@@@
Connection to peripheral USB
port on EtherCAT Coupler Unit
.xml
ESI files
NX Units
End Cover
* Refer to Versions information on the unit versions of CPU Units when you connect an EtherCAT Slave Terminal to the built-in EtherCAT port on
an OMRON NJ/NX-series CPU Unit. OMRON [email protected][email protected] Position Control Units cannot be connected to the EtherCAT Slave Terminal
even though they support EtherCAT.
Sysmac is a trademark or registered trademark of OMRON Corporation in Japan and other countries for OMRON factory automation products.
EtherCAT® is a registered trademark of Beckhoff Automation GmbH for their patented technology. EtherNet/IPTM is the trademarks of ODVA.
Other company names and product names in this document are the trademarks or registered trademarks of their respective companies.
1
NX-OD/OC
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: EC Directives,and KC: KC Registration.
• Contact your OMRON representative for further details and applicable conditions for these standards.
Transistor Output Unit (Screwless Clamping Terminal Block, 12 mm Width)
Specification
Unit type
Product
Name
Internal
Maximum
Number
I/O
value of load
of points
common
current
NPN
2 points
PNP
0.5 A/point,
1 A/Unit
Rated
voltage
I/O refreshing method
Output refreshing with specified time
stamp only*
24 VDC
12 to 24 VDC
NPN
NX
Series
Digital
output
Units
Transistor
Output
Unit
0.5 A/point,
2 A/Unit
4 points
24 VDC
PNP
Switching Synchronous I/O refreshing
and Free-Run refreshing
2 A/point,
8 A/Unit
NPN
NPN
0.5 A/point,
4 A/Unit
NX-OD2258
0.1 ms max./
0.8 ms max.
NX-OD3121
300 ns max./
300 ns max.
NX-OD3153
0.5 ms max./
1.0 ms max.
NX-OD3256
300 ns max./
300 ns max.
NX-OD3257
0.5 ms max./
1.0 ms max.
Standards
NX-OD2154
NX-OD3268
0.1 ms max./
0.8 ms max.
NX-OD4121
24 VDC
0.5 ms max./
1.0 ms max.
NX-OD4256
12 to 24 VDC
0.1 ms max./
0.8 ms max.
NX-OD5121
24 VDC
0.5 ms max./
1.0 ms max.
NX-OD5256
16 points
PNP
300 ns max./
300 ns max.
Model
12 to 24 VDC
8 points
PNP
ON/OFF
response
time
UC1, N, L,
CE, KC
UC1, CE,
KC
UC1, N, L,
CE, KC
* To use output refreshing with specified time stamp, 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)
Specification
Unit type
NX
Series
Digital
output
Units
Product
Name
Internal
Maximum
Number
I/O
value of load
of points
common
current
Transistor
Output
Unit
Rated
voltage
Model
Switching Synchronous I/O refreshing
and Free-Run refreshing
0.5 A/point,
5 A/Unit
PNP
ON/OFF
response
time
Standards
0.1 ms max./ NX-OD5121-1
0.8 ms max.
12 to 24 VDC
NPN
16 points
I/O refreshing method
UC1, CE,
KC
0.5 ms max./ NX-OD5256-1
1.0 ms max.
24 VDC
Transistor Output Units (MIL Connector, 30 mm Width)
Specification
Unit type
NX
Series
Digital
output
Units
Product
Name
Transistor
Output
Unit
Internal
Maximum
Number
I/O
value of load
of points
common
current
NPN
16 points
PNP
0.5 A/point,
2 A/Unit
PNP
I/O refreshing method
0.5 A/point,
2 A/common,
4 A/Unit
ON/OFF
response
time
Model
12 to 24 VDC
0.1 ms max./
0.8 ms max.
NX-OD5121-5
24 VDC
0.5 ms max./
1.0 ms max.
NX-OD5256-5
0.1 ms max./
0.8 ms max.
NX-OD6121-5
0.5 ms max./
1.0 ms max.
NX-OD6256-5
Switching Synchronous I/O refreshing
12 to 24 VDC and Free-Run refreshing
NPN
32 points
Rated
voltage
24 VDC
Standards
UC1, CE,
KC
2
NX-OD/OC
Transistor Output Units (Fujitsu Connector, 30 mm Width)
Specification
Product
Name
Unit type
NX
Series
Digital
output
Units
Number
of points
Internal
Maximum
I/O
value of load
common
current
32 points
NPN
Rated
voltage
I/O refreshing method
ON/OFF
response
time
Model
Standards
Transistor
Output
Unit
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./ NX-OD6121-6 UC1, CE,
KC
0.8 ms max.
Relay Output Unit (Screwless Clamping Terminal Block, 12 mm Width)
Specification
Product
Name
Unit type
NX
Series
Digital
output
Units
Capacity
Relay
Output
Unit
Relay
type
Maximum switching
capacity
I/O refreshing method
ON/OFF
response
time
N.O.
AC250V/2A (cosφ=1)
AC250V/2A (cosφ=0.4)
DC24V/2A
4A/Unit
2 points
Model
Standards
NX-OC2633
UC1, N, L,
CE, KC
NX-OC2733
UC1, N,
CE,KC
15ms max./
15ms max.
Free-Run refreshing
NO+NC
Option
Product Name
Unit/Terminal Block Coding Pins
Specification
Model
For 10 Units
(Terminal Block: 30 pins, Unit: 30 pins)
NX-AUX02
Standards
---
Specification
Product Name
No. of
terminals
Terminal
number
indications
Ground
terminal mark
Terminal
current
capacity
8
Terminal Block
12
16
Model
Standards
NX-TBA082
A/B
None
10 A
NX-TBA122
---
NX-TBA162
Accessories
Not included.
3
NX-OD/OC
General Specification
Item
Enclosure
Specification
Mounted in a panel
Grounding method
Ground to 100 Ω or less
Ambient operating temperature
0 to 55°C
Ambient operating humidity
10% to 95% (with no condensation or icing)
Atmosphere
Must be free from corrosive gases.
Ambient storage temperature
−25 to 70°C (with no condensation or icing)
Altitude
2,000 m max.
Pollution degree
Operating
Noise immunity
environment
Overvoltage category
2 or less: Conforms to JIS B3502 and IEC 61131-2.
2 kV on power supply line (Conforms to IEC61000-4-4.)
Category II: Conforms to JIS B3502 and IEC 61131-2.
EMC immunity level
Zone B
Vibration resistance *1
Conforms to IEC 60068-2-6.
5 to 8.4 Hz with 3.5-mm amplitude, 8.4 to 150 Hz, acceleration of 9.8 m/s2, 100 min each
in X, Y, and Z directions
(10 sweeps of 10 min each = 100 min total)
Shock resistance *1
Conforms to IEC 60068-2-27. 147 m/s2, 3 times each in X, Y, and Z directions
cULus: Listed UL508 and ANSI/ISA 12.12.01
EC: EN 61131-2 and C-Tick, KC: KC Registration, NK, LR
*1 For the Relay Output Unit, refer to the Digital Input Unit Specifications.
*2 Refer to the OMRON website (http://www.ia.omron.com/) or consult your OMRON representative for the most recent applicable standards for
each model.
Applicable standards *2
4
NX-OD/OC
Digital Output Unit Specifications
● Transistor Output Unit (Screwless Clamping Terminal Block 12 mm, Width)
NX-OD2154
Unit name
Transistor Output Unit
Model
NX-OD2154
Capacity
2 points
External connection
terminals
Screwless clamping terminal block
(8 terminals)
I/O refreshing method
Output refreshing with specified time stamp
Internal I/O common
NPN
Rated voltage
24 VDC
Operating load voltage
range
15 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 1 A/Unit
TS indicator, output indicator
Indicators
Maximum inrush current 4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
300 ns max./300 ns max.
Dimensions
12 (W) x 100 (H) x 71 (D)
Isolation method
Digital isolator isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from the NX bus
Current capacity of I/O
power supply terminal
IOV: 0.5 A/terminal max.,
IOG: 0.5 A/terminal max.
NX Unit power
consumption
0.50 W max.
I/O current consumption 30 mA max.
Weight
70 g max.
Drive circuit
Isolation circuit
Internal circuits
IOV0 to 1
OUT0 to OUT1 Terminal block
Circuit layout
IOG0 to 1
I/O power supply +
NX bus
connector
(left)
I/O power supply −
I/O power supply +
I/O power supply −
NX bus
connector
(right)
This unit uses a push-pull output circuit.
Installation orientation
and restrictions
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Additional I/O
Power Supply Unit
A1
Terminal connection
diagram
A1
B1
Two-wire type
OUT0 OUT1
IOV
IOV
IOG
IOG
IOV
IOV
IOV
IOV
IOG
IOG
IOG
IOG
NC
NC
Three-wire type
24 VDC
A8
Disconnection/
Short-circuit
detection
B1
Transistor Output
Unit
NX-OD2154
Not supported.
B8
A8
B8
Protective function
Not supported.
5
NX-OD/OC
NX-OD2258
Unit name
Transistor Output Unit
Model
NX-OD2258
Capacity
2 points
External connection
terminals
Screwless clamping terminal block
(8 terminals)
I/O refreshing method
Output refreshing with specified time stamp
Internal I/O common
PNP
Rated voltage
24 VDC
Operating load voltage
range
15 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 1 A/Unit
TS indicator, output indicator
Indicators
Maximum inrush current 4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
300 ns max./300 ns max.
Dimensions
12 (W) x 100 (H) x 71 (D)
Isolation method
Digital isolator isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from the NX bus
Current capacity of I/O
power supply terminal
IOV: 0.5 A/terminal max.,
IOG: 0.5 A/terminal max.
NX Unit power
consumption
0.50 W max.
I/O current consumption 40 mA max.
Weight
70 g max.
Drive circuit
Isolation circuit
Internal circuits
IOV0 to 1
OUT0 to OUT1 Terminal block
Circuit layout
IOG0 to 1
I/O power supply +
NX bus
connector
(left)
I/O power supply −
I/O power supply +
I/O power supply −
NX bus
connector
(right)
This unit uses a push-pull output circuit.
Installation orientation
and restrictions
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Additional I/O
Power Supply Unit
A1
Terminal connection
diagram
A1
B1
Two-wire type
OUT0 OUT1
IOV
IOV
IOG
IOG
IOV
IOV
IOV
IOV
IOG
IOG
IOG
IOG
NC
NC
24 VDC
Three-wire type
A8
Disconnection/
Short-circuit
detection
B1
Transistor Output
Unit
NX-OD2258
Not supported.
B8
A8
B8
Protective function
With load short-circuit protection.
6
NX-OD/OC
NX-OD3121
Unit name
Transistor Output Unit
Model
NX-OD3121
Capacity
4 points
External connection
terminals
Screwless clamping terminal block (12
terminals)
I/O refreshing method
Selectable Synchronous I/O refreshing or Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
NPN
Rated voltage
12 to 24 VDC
Operating load voltage
range
10.2 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 2 A/Unit
Maximum inrush current 4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
0.1 ms max./0.8 ms max.
Dimensions
12 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from the NX bus
Current capacity of I/O
power supply terminal
IOV: 0.5 A/terminal max.,
IOG: 0.5 A/terminal max.
NX Unit power
consumption
0.55 W max.
I/O current consumption 10 mA max.
Weight
70 g max.
Internal circuits
IOV0 to 3
OUT0 to OUT3
Terminal block
Circuit layout
IOG0 to 3
NX bus
connector
(left)
Installation orientation
and restrictions
I/O power supply +
I/O power supply +
I/O power supply −
I/O power supply −
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Additional I/O
Power Supply Unit
A1
Terminal connection
diagram
B1
Transistor Output
Unit
NX-OD3121
A1
IOV
OUT0 OUT1
IOV0
IOV1
IOG
IOG
IOG0
IOG1
12 to 24 VDC
Two-wire type
Three-wire type
OUT2 OUT3
IOG
A8
Not supported.
B1
IOV
IOV
Disconnection/
Short-circuit
detection
NX bus
connector
(right)
IOV
IOV2
IOV3
IOG2
IOG3
IOG
B8
A8
B8
Protective function
Not supported.
7
NX-OD/OC
NX-OD3153
Unit name
Transistor Output Unit
Model
NX-OD3153
Capacity
4 points
External connection
terminals
Screwless clamping terminal block (12
terminals)
I/O refreshing method
Selectable Synchronous I/O refreshing or Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
NPN
Rated voltage
24 VDC
Operating load voltage
range
15 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 2 A/Unit
Maximum inrush current 4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
300 ns max./300 ns max.
Dimensions
12 (W) x 100 (H) x 71 (D)
Isolation method
Digital isolator isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from the NX bus
Current capacity of I/O
power supply terminal
IOV: 0.5 A/terminal max.,
IOG: 0.5 A/terminal max.
NX Unit power
consumption
0.50 W max.
I/O current consumption 30 mA max.
Weight
70 g max.
Drive circuit
Isolation circuit
Internal circuits
IOV0 to 3
OUT0 to OUT3
Terminal block
Circuit layout
IOG0 to 3
NX bus
connector
(left)
I/O power supply +
I/O power supply +
I/O power supply −
I/O power supply −
NX bus
connector
(right)
This unit uses a push-pull output circuit.
Installation orientation
and restrictions
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Additional I/O
Power Supply Unit
A1
Terminal connection
diagram
B1
A1
IOV
OUT0 OUT1
IOV0
IOV1
IOG
IOG
IOG0
IOG1
24 VDC
Two-wire type
Three-wire type
OUT2 OUT3
IOG
A8
Not supported.
B1
IOV
IOV
Disconnection/
Short-circuit
detection
Transistor Output
Unit
NX-OD3153
IOV
IOV2
IOV3
IOG2
IOG3
IOG
B8
A8
B8
Protective function
Not supported.
8
NX-OD/OC
NX-OD3256
Unit name
Transistor Output Unit
Model
NX-OD3256
Capacity
4 points
External connection
terminals
Screwless clamping terminal block (12
terminals)
I/O refreshing method
Selectable Synchronous I/O refreshing or Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
PNP
Rated voltage
24 VDC
Operating load voltage
range
15 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 2 A/Unit
Maximum inrush current 4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
0.5 ms max./1.0 ms max.
Dimensions
12 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from the NX bus
Current capacity of I/O
power supply terminal
IOV: 0.5 A/terminal max.,
IOG: 0.5 A/terminal max.
NX Unit power
consumption
0.55 W max.
I/O current consumption 20 mA max.
Weight
70 g max.
Internal circuits
Short-circuit protection
IOV0 to 3
Circuit layout
Terminal block
OUT0 to OUT3
IOG0 to 3
NX bus
connector
(left)
Installation orientation
and restrictions
I/O power supply +
I/O power supply +
I/O power supply −
I/O power supply −
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Additional I/O
Power Supply Unit
A1
Terminal connection
diagram
B1
Transistor Output
Unit
NX-OD3256
A1
IOV
OUT0
IOV0
IOV1
IOG
IOG
IOG0
IOG1
24 VDC
Two-wire type
OUT1
Three-wire type
OUT2 OUT3
IOG
A8
Not supported.
B1
IOV
IOV
Disconnection/
Short-circuit
detection
NX bus
connector
(right)
IOV
IOV2
IOV3
IOG2
IOG3
IOG
B8
A8
B8
Protective function
With load short-circuit protection.
9
NX-OD/OC
NX-OD3257
Unit name
Transistor Output Unit
Model
NX-OD3257
Capacity
4 points
External connection
terminals
Screwless clamping terminal block (12
terminals)
I/O refreshing method
Selectable Synchronous I/O refreshing or Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
PNP
Rated voltage
24 VDC
Operating load voltage
range
15 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 2 A/Unit
Maximum inrush current 4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
300 ns max./300 ns max.
Dimensions
12 (W) x 100 (H) x 71 (D)
Isolation method
Digital isolator isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from the NX bus
Current capacity of I/O
power supply terminal
IOV: 0.5 A/terminal max.,
IOG: 0.5 A/terminal max.
NX Unit power
consumption
0.50 W max.
I/O current consumption 40 mA max.
Weight
70 g max.
Drive circuit
Circuit layout
Terminal block
Isolation circuit
Internal circuits
Short-circuit
protection
IOV0 to 3
OUT0 to OUT3
IOG0 to 3
NX bus
connector
(left)
I/O power supply +
I/O power supply +
I/O power supply −
I/O power supply −
NX bus
connector
(right)
This unit uses a push-pull output circuit.
Installation orientation
and restrictions
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Additional I/O
Power Supply Unit
A1
Terminal connection
diagram
B1
A1
IOV
OUT0 OUT1
IOV0
IOV1
IOG
IOG
IOG0
IOG1
24 VDC
Two-wire type
Three-wire type
OUT2 OUT3
IOG
A8
Not supported.
B1
IOV
IOV
Disconnection/
Short-circuit
detection
Transistor Output
Unit
NX-OD3257
IOV
IOV2
IOV3
IOG2
IOG3
IOG
B8
A8
B8
Protective function
With load short-circuit protection.
10
NX-OD/OC
NX-OD3268
Unit name
Transistor Output Unit
Model
NX-OD3268
Number of points
4 points
External connection
terminals
Screwless clamping terminal block (16
terminals)
I/O refreshing method
Switching Synchronous I/O refreshing and Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
PNP
Rated voltage
24 VDC
Operating load voltage
range
15 to 28.8 VDC
Maximum value of load
current
2 A/point, 8 A/Unit
Maximum inrush current 4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
0.5 ms max./1.0 ms max.
Dimensions
12 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from external source
Current capacity of I/O
power supply terminal
IOV: 2 A/terminal max.,
IOG: 2 A/terminal max.,
COM (+V): 4 A/terminal max.,
0V: 4 A/terminal max.
NX Unit power
consumption
0.50 W max.
Current consumption
from I/O power supply
20 mA max.
Weight
70 g max.
IOV 0 to IOV 3
Circuit layout
Short-circuit
protection
Internal circuits
COM (+V)
Terminal block
OUT 0 to OUT 3
IOG 0 to IOG 3
0V
NX bus
connector
(left)
Installation orientation
and restrictions
I/O power
supply +
I/O power
supply +
I/O power
supply −
I/O power
supply −
NX bus
connector
(right)
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Transistor Output Unit
NX-OD3268
A1
B1
OUT0
Terminal connection
diagram
24 V
DC
IOV0
IOV1
IOG0
IOG1
OUT2
OUT3
Three-wire type
IOV2
IOV3
IOG2
IOG3
COM (+V)
COM (+V)
0V
0V
A8
Two-wire type
OUT1
B8
• 0V has 2 terminals, so be sure to wire both terminals.
• COM (+V) has 2 terminals, so be sure to wire both terminals.
Disconnection/
Short-circuit detection
Not supported.
Protective function
With load short-circuit protection.
11
NX-OD/OC
NX-OD4121
Unit name
Transistor Output Unit
Model
NX-OD4121
Capacity
8 points
External connection
terminals
Screwless clamping terminal block (16
terminals)
I/O refreshing method
Selectable Synchronous I/O refreshing or Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
NPN
Rated voltage
12 to 24 VDC
Operating load voltage
range
10.2 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 4 A/Unit
Maximum inrush current 4.0 A/point, 10 ms max.
Leakage current
0.1 mA
Residual voltage
1.5 V max.
ON/OFF response time
0.1 ms max./0.8 ms max.
Dimensions
12 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from the NX bus
Current capacity of I/O
power supply terminal
IOV: 0.5 A/terminal max.
NX Unit power
consumption
0.55 W max.
I/O current consumption 10 mA max.
Weight
70 g max.
IOV0 to 7
Internal circuits
Terminal block
OUT0 to OUT7
Circuit layout
NX bus
connector
(left)
Installation orientation
and restrictions
I/O power supply +
I/O power supply +
I/O power supply −
I/O power supply −
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Additional I/O
Power Supply Unit
A1
Terminal connection
diagram
B1
IOV
IOV
IOG
IOG
IOV
IOV
I/O Power Supply
Connection Unit
A1
12 to 24 VDC
IOG
IOG
Not supported.
B8
A8
Transistor Output
Unit
NX-OD4121
B1
B1 Two-wire type
A1
IOG
IOG
IOG
IOG
IOV0
IOV1
IOG
IOG
OUT2
OUT3
IOG
IOG
IOV2
IOV3
IOG
IOG
OUT4
OUT5
IOG
IOG
IOV4
IOV5
IOG
IOG
OUT6
OUT7
IOG
IOV6
IOV7
IOG
A8
Disconnection/
Short-circuit
detection
NX bus
connector
(right)
OUT0 OUT1
B8
A8
Protective function
Three-wire type
B8
Not supported.
12
NX-OD/OC
NX-OD4256
Unit name
Transistor Output Unit
Model
NX-OD4256
Capacity
8 points
External connection
terminals
Screwless clamping terminal block (16
terminals)
I/O refreshing method
Selectable Synchronous I/O refreshing or Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
PNP
Rated voltage
24 VDC
Operating load voltage
range
15 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 4 A/Unit
Maximum inrush current 4.0 A/point, 10 ms max.
Leakage current
0.1 mA
Residual voltage
1.5 V max.
0.5 ms max./1.0 ms max.
12 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from the NX bus
Current capacity of I/O
power supply terminal
IOG: 0.5 A/terminal max.
NX Unit power
consumption
0.65 W max.
I/O current consumption 30 mA max.
Weight
70 g max.
Internal circuits
Short-circuit protection
ON/OFF response time
Dimensions
Circuit layout
OUT0 to OUT7
Terminal block
IOG0 to 7
NX bus
connector
(left)
Installation orientation
and restrictions
I/O power supply +
I/O power supply +
I/O power supply −
I/O power supply −
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Additional I/O
Power Supply Unit
A1
Terminal connection
diagram
B1
IOV
IOV
IOG
IOG
I/O Power Supply
Connection Unit
A1
24 VDC
IOV
IOG
A8
Disconnection/
Short-circuit
detection
NX bus
connector
(right)
Not supported.
IOV
IOG
B8
A8
Transistor Output
Unit
NX-OD4256
B1
B1 Two-wire type
A1
OUT0 OUT1
IOV
IOV
IOV
IOV
IOG0
IOG1
IOV
IOV
OUT2
OUT3
IOV
IOV
IOG2
IOG3
IOV
IOV
OUT4
OUT5
IOV
IOV
IOG4
IOG5
IOV
IOV
OUT6
OUT7
IOV
IOV
IOG6
IOG7
B8
A8
Protective function
Three-wire type
B8
With load short-circuit protection.
13
NX-OD/OC
NX-OD5121
Unit name
Transistor Output Unit
Model
NX-OD5121
Capacity
16 points
External connection
terminals
Screwless clamping terminal block (16
terminals)
I/O refreshing method
Selectable Synchronous I/O refreshing or Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
NPN
Rated voltage
12 to 24 VDC
Operating load voltage
range
10.2 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 4 A/Unit
Maximum inrush current 4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
0.1 ms max./0.8 ms max.
12 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from the NX bus
Current capacity of I/O
power supply terminal
Without I/O power supply terminals
NX Unit power
consumption
0.65 W max.
I/O current consumption 20 mA max.
Weight
70 g max.
Internal circuits
ON/OFF response time
Dimensions
OUT0 to OUT15 Terminal block
Circuit layout
NX bus
connector
(left)
Installation orientation
and restrictions
I/O power supply +
I/O power supply +
I/O power supply −
I/O power supply −
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Additional I/O
Power Supply Unit
A1
B1
IOV
Terminal connection
diagram
IOG
I/O Power Supply
Connection Unit
A1
IOV
IOG
12 to 24 VDC
IOV
IOG
IOV
IOG
Not supported.
B8
A8
I/O Power Supply
Connection Unit
B1 A1
B1
Transistor Output
Unit
NX-OD5121
A1
IOV
IOG
IOG
IOV
IOV
IOG
IOG
IOV
IOV
IOG
IOG
OUT4
OUT5
IOV
IOV
IOG
IOG
OUT6
OUT7
IOV
IOV
IOG
IOG
OUT8
OUT9
IOV
IOV
IOG
IOG
OUT10 OUT11
IOV
IOV
IOG
IOG
OUT12 OUT13
IOG
IOG
IOV
B8 A8
Two-wire type
B1
IOV
IOV
A8
Disconnection/
Short-circuit
detection
NX bus
connector
(right)
OUT0
OUT2
OUT1
OUT3
Three-wire type
OUT14 OUT15
B8
Protective function
A8
B8
Not supported.
14
NX-OD/OC
NX-OD5256
Unit name
Transistor Output Unit
Model
NX-OD5256
Capacity
16 points
External connection
terminals
Screwless clamping terminal block (16
terminals)
I/O refreshing method
Selectable Synchronous I/O refreshing or Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
PNP
Rated voltage
24 VDC
Operating load voltage
range
15 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 4 A/Unit
Maximum inrush current 4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
0.5 ms max./1.0 ms max.
12 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from the NX bus
Current capacity of I/O
power supply terminal
Without I/O power supply terminals
NX Unit power
consumption
0.70 W max.
I/O current consumption 40 mA max.
Weight
70 g max.
Internal circuits
Circuit layout
NX bus
connector
(left)
Installation orientation
and restrictions
Terminal block
I/O power supply +
I/O power supply −
I/O power supply −
NX bus
connector
(right)
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
A1
B1
IOV
IOV
IOG
IOG
I/O Power Supply
Connection Unit
A1
24 VDC
IOV
IOG
A8
Disconnection/
Short-circuit
detection
OUT0 to OUT15
I/O power supply +
Additional I/O
Power Supply Unit
Terminal connection
diagram
Short-circuit protection
ON/OFF response time
Dimensions
Not supported.
IOV
IOG
B8
A8
I/O Power Supply
Connection Unit
B1 A1
B1
Transistor Output
Unit
NX-OD5256
A1
B1
OUT0
IOV
IOG
IOG
IOV
IOV
IOG
IOG
IOV
IOV
IOG
IOG
OUT4
OUT5
IOV
IOV
IOG
IOG
OUT6
OUT7
IOV
IOV
IOG
IOG
OUT8
OUT9
IOV
IOV
IOG
IOG
OUT10 OUT11
IOV
IOV
IOG
IOG
OUT12 OUT13
IOV
IOV
IOG
IOG
B8 A8
OUT2
Two-wire type
OUT1
IOV
OUT3
Three-wire type
OUT14 OUT15
B8
A8
Protective function
B8
With load short-circuit protection.
15
NX-OD/OC
● Transistor Output Units (M3 Screw Terminal Block, 30 mm Width)
NX-OD5121-1
Unit name
Transistor Output Unit
Model
NX-OD5121-1
Number of points
16 points
External connection
terminals
M3 screw terminal block (18 terminals)
I/O refreshing method
Switching Synchronous I/O refreshing and Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
NPN
Rated voltage
12 to 24 VDC
Operating load voltage
range
10.2 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 5 A/Unit
Maximum inrush current 4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
0.1 ms max./0.8 ms max.
Dimensions
30 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from the external source
Current capacity of I/O
power supply terminal
Without I/O power supply terminals
NX Unit power
consumption
0.60 W max.
Current consumption
from
I/O power supply
30 mA max.
Weight
125 g max.
+V
Internal circuits
OUT0 to OUT15
Terminal block
Circuit layout
COM
NX bus
connector
(left)
Installation orientation
and restrictions
Terminal connection
diagram
I/O power
supply +
I/O power
supply +
I/O power
supply −
I/O power
supply −
NX bus
connector
(right)
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Signal name
OUT0
L
OUT2
L
OUT4
L
OUT6
L
OUT8
L
OUT10
L
OUT12
L
OUT14
L
COM
Terminal
A
B
A0
A1
A2
A3
A4
A5
A6
A7
A8
Signal name
B0
OUT1
B1
OUT3
B2
OUT5
B3
OUT7
B4
OUT9
B5
OUT11
B6
OUT13
B7
OUT15
B8
+V
L
L
L
L
L
L
L
L
12 to 24 VDC
Disconnection/
Short-circuit detection
Not supported.
Protective function
Not supported.
16
NX-OD/OC
NX-OD5256-1
Unit name
Transistor Output Unit
Model
NX-OD5256-1
Number of points
16 points
External connection
terminals
M3 screw terminal block (18 terminals)
I/O refreshing method
Switching Synchronous I/O refreshing and Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
PNP
Rated voltage
24 VDC
Operating load voltage
range
20.4 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 5 A/Unit
Maximum inrush current 4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
0.5 ms max./1.0 ms max.
Dimensions
30 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits (at
100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1
minute at a leakage current of 5 mA max.
I/O power supply
method
Supply from external source
Current capacity of I/O
power supply terminal
Without I/O power supply terminals
NX Unit power
consumption
0.65 W max.
Current consumption
from
I/O power supply
30 mA max.
Weight
125 g max.
Circuit layout
Short-circuit
protection
Internal circuits
COM (+V)
Terminal
block
OUT0 to OUT15
0V
NX bus
connector
(left)
Installation orientation
and restrictions
I/O power
supply +
I/O power
supply −
I/O power
supply −
NX bus
connector
(right)
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
L
L
L
Terminal connection
diagram
I/O power
supply +
L
L
L
L
L
Terminal
A
B
Signal name
OUT0
A0
OUT2
A1
OUT4
A2
OUT6
A3
OUT8
A4
OUT10
A5
OUT12
A6
OUT14
A7
0V
A8
Signal name
B0
OUT1
B1
OUT3
B2
OUT5
B3
OUT7
B4
OUT9
B5
OUT11
B6
OUT13
B7
OUT15
B8
COM (+V)
L
L
L
L
L
L
L
L
24 VDC
Disconnection/
Short-circuit detection
Not supported.
Protective function
With load short-circuit protection.
17
NX-OD/OC
● Transistor Output Units (MIL Connector, 30 mm Width)
NX-OD5121-5
Unit name
Transistor Output Unit
Model
NX-OD5121-5
Number of points
16 points
External connection
terminals
MIL connector (20 terminals)
I/O refreshing method
Switching Synchronous I/O refreshing and Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
NPN
Rated voltage
12 to 24 VDC
Operating load voltage
range
10.2 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 2 A/Unit
Maximum inrush current
4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
0.1 ms max./0.8 ms max.
Dimensions
30 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits
(at 100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1 minute at
a leakage current of 5 mA max.
I/O power supply method
Supply from external source
Current capacity of I/O
power supply terminal
Without I/O power supply terminals
Current consumption from
I/O power supply
30 mA max.
NX Unit power consumption 0.60 W max.
Weight
80 g max.
+V
+V
Internal circuits
OUT0 to OUT15
Connector
Circuit layout
COM
COM
NX bus
connector
(left)
Installation orientation and
restrictions
I/O power supply +
I/O power supply +
I/O power supply −
I/O power supply −
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
12 to
24 VDC
L
Terminal connection
diagram
NX bus
connector
(right)
L
L
L
L
L
L
L
Signal
name
Connector
pin
Signal
name
+V
1
2
+V
COM
3
4
COM
OUT15
5
6
OUT07
OUT14
7
8
OUT06
OUT13
9
10
OUT05
OUT12
11
12
OUT04
OUT11
13
14
OUT03
OUT10
15
16
OUT02
OUT09
17
18
OUT01
OUT08
19
20
OUT00
L
L
L
L
L
L
L
L
• Be sure to wire both pins 3 and 4 (COM).
• Be sure to wire both pins 1 and 2 (+V).
Disconnection/Short-circuit
detection
Not supported.
Protective function
Not supported.
18
NX-OD/OC
NX-OD5256-5
Unit name
Transistor Output Unit
Model
NX-OD5256-5
Number of points
16 points
External connection
terminals
MIL connector (20 terminals)
I/O refreshing method
Switching Synchronous I/O refreshing and Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
PNP
Rated voltage
24 VDC
Operating load voltage
range
20.4 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 2 A/Unit
Maximum inrush current
4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
0.5 ms max./1.0 ms max.
Dimensions
30 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits (at 100
VDC)
Dielectric strength
510 VAC between isolated circuits for 1 minute at
a leakage current of 5 mA max.
I/O power supply method
Supplied from external source.
Current capacity of I/O
power supply terminal
Without I/O power supply terminals
Current consumption from
I/O power supply
40 mA max.
NX Unit power consumption 0.70 W max.
Weight
85 g max.
COM (+V)
Internal circuits
Short-circuit
protection
COM (+V)
Circuit layout
Connector
OUT0 to OUT15
0V
0V
NX bus
connector
(left)
Installation orientation and
restrictions
I/O power supply +
I/O power supply +
I/O power supply −
I/O power supply −
NX bus
connector
(right)
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Signal
name
Connector
pin
Signal
name
24 VDC
L
Terminal connection
diagram
L
L
L
L
L
L
L
COM (+V)
1
2
COM (+V)
0V
3
4
0V
OUT15
5
6
OUT07
OUT14
7
8
OUT06
OUT13
9
10
OUT05
OUT12
11
12
OUT04
OUT11
13
14
OUT03
OUT10
15
16
OUT02
OUT09
17
18
OUT01
OUT08
19
20
OUT00
L
L
L
L
L
L
L
L
• Be sure to wire both pins 1 and 2 (COM (+V)).
• Be sure to wire both pins 3 and 4 (0V).
Disconnection/Short-circuit
detection
Not supported.
Protective function
With load short-circuit protection.
19
NX-OD/OC
NX-OD6121-5
Unit name
Transistor Output Unit
Model
NX-OD6121-5
Number of points
32 points
External connection
terminals
MIL connector (40 terminals)
I/O refreshing method
Switching Synchronous I/O refreshing and Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
NPN
Rated voltage
12 to 24 VDC
Operating load voltage
range
10.2 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 2 A/common, 4 A/Unit
Maximum inrush current
4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
0.1 ms max./0.8 ms max.
Dimensions
30 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits
(at 100 VDC)
Dielectric strength
510 VAC between isolated circuits for 1 minute at
a leakage current of 5 mA max.
I/O power supply method
Supply from external source
Current capacity of I/O
power supply terminal
Without I/O power supply terminals
Current consumption from
I/O power supply
50 mA max.
NX Unit power consumption 0.80 W max.
Weight
90 g max.
+V0
+V0
Internal circuits
OUT0
to OUT15
COM0
COM0
+V1
Circuit layout
Connector
+V1
OUT16
to OUT31
COM1
COM1
NX bus
I/O power supply +
connector
I/O power supply −
(left)
Installation orientation and
restrictions
I/O power supply +
I/O power supply −
NX bus
connector
(right)
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
20
NX-OD/OC
Signal
name
12 to
24 VDC
L
L
L
L
L
L
L
Terminal connection
diagram
L
L
L
L
L
L
12 to
24 VDC
Disconnection/Short-circuit
detection
Not supported.
L
L
Connector
pin
Signal
name
+V1
1
2
+V1
COM1
3
4
COM1
OUT31
5
6
OUT23
OUT30
7
8
OUT22
OUT29
9
10
OUT21
OUT28
11
12
OUT20
OUT27
13
14
OUT19
OUT26
15
16
OUT18
OUT25
17
18
OUT17
OUT24
19
20
OUT16
+V0
21
22
+V0
COM0
23
24
COM0
OUT15
25
26
OUT07
OUT14
27
28
OUT06
OUT13
29
30
OUT05
OUT12
31
32
OUT04
OUT11
33
34
OUT03
OUT10
35
36
OUT02
OUT09
37
38
OUT01
OUT08
39
40
OUT00
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
Protective function
• Be sure to wire both pins 21 and 22 (+V0).
• Be sure to wire both pins 23 and 24 (COM0).
• Be sure to wire both pins 1 and 2 (+V1).
• Be sure to wire both pins 3 and 4 (COM1).
Not supported.
21
NX-OD/OC
NX-OD6256-5
Unit name
Transistor Output Unit
Model
NX-OD6256-5
Number of points
32 points
External connection
terminals
MIL connector (40 terminals)
I/O refreshing method
Switching Synchronous I/O refreshing and Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
PNP
Rated voltage
24 VDC
Operating load voltage
range
20.4 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 2 A/common, 4 A/Unit
Maximum inrush current
4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
0.5 ms max./1.0 ms max.
Dimensions
30 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits (at 100
VDC)
Dielectric strength
510 VAC between isolated circuits for 1 minute at
a leakage current of 5 mA max.
I/O power supply method
Supply from external source
Current capacity of I/O
power supply terminal
Without I/O power supply terminals
Current consumption from
I/O power supply
80 mA max.
NX Unit power consumption 1.00 W max.
Weight
95 g max.
COM0 (+V)
Internal circuits
Short-circuit
protection
COM0 (+V)
Circuit layout
OUT0
to OUT15
0V0
0V0
Connector
COM1 (+V)
Short-circuit
protection
COM1 (+V)
OUT16
to OUT31
0V1
0V1
NX bus
connector
(left)
Installation orientation and
restrictions
I/O power supply +
I/O power supply +
I/O power supply −
I/O power supply −
NX bus
connector
(right)
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
22
NX-OD/OC
Signal
name
L
L
L
L
L
L
Terminal connection
diagram
L
L
L
L
L
L
L
L
L
L
Disconnection/Short-circuit
detection
Not supported.
Connector
pin
Signal
name
COM1 (+V)
1
2
COM1 (+V)
0V1
3
4
0V1
OUT31
5
6
OUT23
OUT30
7
8
OUT22
OUT29
9
10
OUT21
OUT28
11
12
OUT20
OUT27
13
14
OUT19
OUT26
15
16
OUT18
OUT25
17
18
OUT17
OUT24
19
20
OUT16
24 VDC
L
L
L
L
L
L
L
COM0 (+V)
21
22
COM0 (+V)
0V0
23
24
0V0
OUT15
25
26
OUT07
OUT14
27
28
OUT06
OUT13
29
30
OUT05
OUT12
31
32
OUT04
OUT11
33
34
OUT03
OUT10
35
36
OUT02
OUT09
37
38
OUT01
OUT08
39
40
OUT00
L
24 VDC
L
L
L
L
L
L
L
• Be sure to wire both pins 21 and 22 (COM0 (+V)).
• Be sure to wire both pins 1 and 2 (COM1 (+V)).
• Be sure to wire both pins 23 and 24 (0V0).
• Be sure to wire both pins 3 and 4 (0V1).
Protective function
With load short-circuit protection.
L
23
NX-OD/OC
● Transistor Output Units (Fujitsu Connector, 30 mm Width)
NX-OD6121-6
Unit name
Transistor Output Unit
Model
NX-OD6121-6
Number of points
32 points
External connection
terminals
Fujitsu connector (40 terminals)
I/O refreshing method
Switching Synchronous I/O refreshing and Free-Run refreshing
TS indicator, output indicator
Indicators
Internal I/O common
NPN
Rated voltage
12 to 24 VDC
Operating load voltage
range
10.2 to 28.8 VDC
Maximum value of load
current
0.5 A/point, 2 A/common, 4 A/Unit
Maximum inrush current
4.0 A/point, 10 ms max.
Leakage current
0.1 mA max.
Residual voltage
1.5 V max.
ON/OFF response time
0.1 ms max./0.8 ms max.
Dimensions
30 (W) x 100 (H) x 71 (D)
Isolation method
Photocoupler isolation
Insulation resistance
20 MΩ min. between isolated circuits (at 100
VDC)
Dielectric strength
510 VAC between isolated circuits for 1 minute at
a leakage current of 5 mA max.
I/O power supply method
Supply from external source
Current capacity of I/O
power supply terminal
Without I/O power supply terminals
Current consumption from
I/O power supply
50 mA max.
NX Unit power consumption 0.80 W max.
Weight
90 g max.
Internal circuits
+V0
+V0
OUT0
to OUT15
Circuit layout
NX bus
connector
(left)
Installation orientation and
restrictions
+V1
+V1
OUT16
to OUT31
COM1
COM1
I/O power
supply +
I/O power
supply −
I/O power
supply +
I/O power
supply −
Connector
NX bus
connector
(right)
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
12 to 24 VDC
L
L
L
L
L
L
L
L
Terminal connection
diagram
COM0
COM0
L
L
L
L
L
L
L
L
Signal
name
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
COM0
+V0
OUT8
OUT9
OUT10
OUT11
OUT12
OUT13
OUT14
OUT15
COM0
+V0
Connector Signal
pin
name
A1 B1 OUT16
A2 B2 OUT17
A3 B3 OUT18
A4 B4 OUT19
A5 B5 OUT20
A6 B6 OUT21
A7 B7 OUT22
A8 B8 OUT23
A9 B9 COM1
A10 B10 +V1
A11 B11 OUT24
A12 B12 OUT25
A13 B13 OUT26
A14 B14 OUT27
A15 B15 OUT28
A16 B16 OUT29
A17 B17 OUT30
A18 B18 OUT31
A19 B19 COM1
A20 B20 +V1
12 to 24 VDC
• Be sure to wire both pins A9 and A19 (COM0).
• Be sure to wire both pins B9 and B19 (COM1).
• Be sure to wire both pins A10 and A20 (+V0).
• Be sure to wire both pins B10 and B20 (+V1).
Disconnection/
Short-circuit detection
Not supported.
Protective function
Not supported.
24
NX-OD/OC
● Relay Output Unit (Screwless Clamping Terminal Block 12 mm, Width)
NX-OC2633
Unit name
Relay Output Units
Model
NX-OC2633
Capacity
2 points, independent contacts
External connection
terminals
Screwless clamping terminal block (8
terminals)
I/O refreshing method
Free-Run refreshing
Relay type
N.O. contact
Maximum switching
capacity
250 VAC/2 A (cosφ = 1),
250 VAC/2 A (cosφ = 0.4),
24 VDC/2 A, 4 A/Unit
Minimum switching
capacity
5 VDC, 1 mA
TS indicator, output indicator
Indicators
Relay service life
Electrical: 100,000 operations*
Mechanical: 20,000,000 operations
ON/OFF response time
15 ms max./15 ms max.
Dimensions
12 (W) x 100 (H) x 71 (D)
Isolation method
Relay isolation
Dielectric strength
Between A1/B1 terminals and A3/B3
terminals: 2300 VAC for 1 min at a leakage
current of 5 mA max.
Between the external terminals and GR
terminal: 2300 VAC for 1 min at a leakage
current of 5 mA max.
Between the external terminals and
internal circuits: 2300 VAC for 1 min at a
leakage current of 5 mA max.
Between the internal circuit and GR
terminal: 510 VAC for 1 min at a leakage
current of 5 mA max.
Insulation resistance
Between A1/B1 terminals and A3/B3
terminals: 20 MΩ min. (500 VDC)
Between the external terminals and
internal circuits: 20 MΩ min. (500 VDC)
Between the internal circuit and GR
terminal: 20 MΩ min. (100 VDC)
Between the external terminals and GR
terminal: 20 MΩ min. (500 VDC)
Vibration resistance
Conforms to IEC60068-2-6.
5 to 8.4 Hz with amplitude of 3.5 mm, 8.4 to
150 Hz, acceleration of 9.8 m/s2
Shock resistance
100 min each in X, Y, and Z directions
(10 sweeps of 10 min each = 100 min total)
100 m/s2, 3 times each in X, Y, and Z
directions
I/O power supply method Supply from external source
Current capacity of I/O
power supply terminal
NX Unit power consumption 0.80 W max.
I/O current consumption No consumption
Weight
Without I/O power supply terminals
65 g max.
0 to 1
Internal circuits
Terminal block
C0 to C1
Circuit layout
Internal power
supply
NX bus
connector
(left)
I/O power supply +
I/O power supply +
I/O power supply −
I/O power supply −
NX bus
connector
(right)
You cannot replace the relay.
Installation orientation
and restrictions
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
Relay Output
Unit
NX-OC2633
A1
Load
Load
Terminal connection
diagram
A8
Disconnection/
Short-circuit
detection
Not supported.
B1
0
C0
1
C1
NC
NC
NC
NC
B8
Protective function
Not supported.
* Electrical service life will vary depending on the current value. Refer to "NX-series Digital I/O Units User’s Manual" for details.
25
NX-OD/OC
● Relay Output Unit
NX-OC2733
Unit name
Relay Output Unit
Model
NX-OC2733
Number of points
2 points, independent contacts
External connection
terminals
Screwless clamping terminal block (8
terminals)
Capacity
Free-Run refreshing
Maximum switching
capacity
250 VAC/2 A (cosφ = 1),
250 VAC/2 A (cosφ = 0.4),
24 VDC/2 A,
4 A/Unit
Minimum switching
capacity
5 VDC, 10 mA
TS indicator, output indicator
Indicators
Relay service life
Electrical: 100,000 operations
Mechanical: 20,000,000 operations
ON/OFF response time
15 ms max./15 ms max.
Dimensions
12 (W) x 100 (H) x 71 (D)
Isolation method
Relay isolation
Insulation resistance
Between A1/3, B1/3 terminals and A5/7,
B5/7 terminals: 20 MΩ min. (at 500 VDC)
Between the external terminals and
functional ground terminal: 20 MΩ min. (at
500 VDC)
Dielectric strength
Between the external terminals and
internal circuits: 20 MΩ min. (at 500 VDC)
Between the internal circuit and the
functional ground terminal: 20 MΩ min. (at
100 VDC)
I/O power supply
method
Supply from external source
Current capacity of I/O
power supply terminal
Without I/O power supply terminals
NX Unit power
consumption
0.95 W max.
Current consumption
from I/O power supply
No consumption
Weight
70 g max.
NO0 to NO1
Internal circuits
Circuit layout
Between A1/3, B1/3 terminals and A5/7,
B5/7 terminals: 2300 VAC for 1 min at a
leakage current of 5 mA max.
Between the external terminals and the
functional ground terminal: 2300 VAC for 1
min at a leakage current of 5 mA max.
Between the external terminals and
internal circuits: 2300 VAC for 1 min at a
leakage current of 5 mA max.
Between the internal circuit and the
functional ground terminal: 510 VAC for 1
min at a leakage current of 5 mA max.
C0 to C1
NC0 to NC1
Terminal block
Internal power
supply
NX bus
connector
(left)
I/O power supply +
I/O power supply +
I/O power supply −
I/O power supply −
NX bus
connector
(right)
NO0 and NO1 are normal open contacts, and NC0 and NC1 are normal close contacts.
You cannot replace the relay.
Installation orientation
and restrictions
Installation orientation: Possible in 6 orientations.
Restrictions: No restrictions
A1
Load
Terminal connection
diagram
A8
Disconnection/Shortcircuit detection
Not supported.
Relay Output
Unit
NX-OC2733
NO0
NC0
C0
C0
NO1
NC1
C1
C1
B1
Load
B8
Protective function
Not supported.
26
NX-OD/OC
Version Information
NX Units
Corresponding Unit Versions/Versions *1
EtherCAT
Model
Unit version
NX-OD2154
Communications
Coupler Units
NX-ECC20@
Ver.1.1
NX-OD2258
NJ/NX series
CPU Units
Ver.1.06 *2
EtherNet/IP
Sysmac Studio
Ver.1.07
Communications
Coupler Units
NX-EIC202
---
Sysmac Studio
---
NX-OD3121
NX-OD3153
NX-OD3256
Ver.1.06
Ver.1.10
Ver.1.13
Ver.1.13
Ver.1.06
Ver.1.10
NX-OD3257
NX-OD3268
NX-OD4121
NX-OD4256
NX-OD5121
NX-OD5121-1
NX-OD5121-5
Ver.1.0
Ver.1.0
Ver.1.05
Ver.1.13
Ver.1.10
Ver.1.0
Ver.1.13
Ver.1.10
NX-OD5256
Ver.1.06
NX-OD5256-1
Ver.1.13
Ver.1.13
Ver.1.10
Ver.1.10
NX-OD6121-6
Ver.1.13
Ver.1.13
NX-OD6256-5
Ver.1.10
NX-OC2633
Ver.1.06
NX-OC2733
Ver.1.08
NX-OD5256-5
NX-OD6121-5
Ver.1.10
*1 Some Units do not have all of the versions given in the above table. If a Unit does not have the specified version, support is provided by the
oldest available version after the specified version. Refer to the user’s manuals for the specific Units for the relation between models and
versions.
*2 The instructions for time stamp refreshing are supported by CPU Units with unit version 1.06 or later. If you do not use instructions for time
stamp refreshing, you can use version 1.05. Refer to the NJ/NX-series Instructions Reference Manual (Cat. No. W502) for details on the
instructions for time stamp refreshing.
27
NX-OD/OC
External Interface
Screwless Clamping Terminal Block Type
NX Units (12 mm Width)
(B)
(C)
(A)
Symbol
(A)
(B)
(C)
Name
NX bus connector
Indicators
Terminal block
Function
This connector is used to connect each Unit.
The indicators show the current operating status of the Unit.
The terminal block is used to connect external devices.
The number of terminals depends on the type of Unit.
Terminal Blocks
(A)
(B)
A1
B1
A1
B1
A1
B1
A2
B2
A2
B2
A2
B2
A3
B3
A3
B3
A3
B3
A4
B4
A4
B4
A4
B4
A5
B5
A5
B5
A5
B5
A6
B6
A6
B6
A6
B6
A7
B7
A7
B7
A7
B7
A8
B8
A8
B8
A8
B8
(C)
8-terminal type
Symbol
Name
(A)
Terminal number
indications
(B)
(C)
Release holes
Terminal holes
16-terminal type
12-terminal type
Function
Terminal numbers for which A and B indicate the column, and 1 to 8 indicate the line are displayed.
The terminal number is a combination of column and line, i.e. A1 to A8 and B1 to B8.
The terminal number indications are the same regardless of the number of terminals on the terminal block.
Insert a flat-blade screwdriver into these holes to connect and remove the wires.
The wires are inserted into these holes.
Applicable Terminal Blocks for Each Unit Model
Unit model
NX-OD2@@@
NX-OD3@@@
(any model other than
NX-OD3268)
NX-OD3268
NX-OD4@@@
NX-OD5@@@
NX-OC2@@@
Terminal Blocks
No. of terminals
Ground terminal mark
None
Model
NX-TBA082
8
Terminal current capacity
10 A
NX-TBA122
12
None
10 A
NX-TBA162
16
None
10 A
NX-TBA162
NX-TBA082
16
8
None
None
10 A
10 A
28
NX-OD/OC
Applicable Wires
Using Ferrules
If you use ferrules, attach the twisted wires to them.
Observe the application instructions for your ferrules for the wire stripping length when attaching ferrules.
Always use plated one-pin ferrules. Do not use unplated ferrules or two-pin ferrules.
The applicable ferrules, wires, and crimping tool are given in the following table.
Terminal types
Manufacturer
Terminals other
than ground
terminals
Phoenix Contact
Ferrule model
number
Applicable wire
(mm2 (AWG))
AI0,34-8
0.34 (#22)
AI0,5-8
0.5 (#20)
Crimping tool
Phoenix Contact (The figure in parentheses is the applicable wire size.)
CRIMPFOX 6 (0.25 to 6 mm2, AWG24 to 10)
AI0,5-10
AI0,75-8
0.75 (#18)
AI0,75-10
AI1,0-8
1.0 (#18)
AI1,0-10
AI1,5-8
1.5 (#16)
AI1,5-10
Ground terminals
Terminals other
than ground
terminals
Weidmuller
AI2,5-10
2.0 *
H0.14/12
0.14 (#26)
H0.25/12
0.25 (#24)
H0.34/12
0.34 (#22)
H0.5/14
0.5 (#20)
Weidmuller (The figure in parentheses is the applicable wire size.)
PZ6 Roto (0.14 to 6 mm2, AWG 26 to 10)
H0.5/16
H0.75/14
0.75 (#18)
H0.75/16
H1.0/14
1.0 (#18)
H1.0/16
H1.5/14
1.5 (#16)
H1.5/16
* Some AWG 14 wires exceed 2.0 mm2 and cannot be used in the screwless clamping terminal block.
When you use any ferrules other than those in the above table, crimp them to the twisted wires so that the following processed dimensions are
achieved.
Finished Dimensions of Ferrules
8 to 10 mm
1.6 mm max. (except ground terminals)
2.4 mm max. (except ground terminals)
2.0 mm max. (ground terminals)
2.7 mm max. (ground terminals)
Using Twisted Wires/Solid Wires
If you use the twisted wires or the solid wires, use the following table to determine the correct wire specifications.
Terminals
Classification
Current capacity
Wire type
Twisted wires
Plated
2 A max.
All terminals except
ground terminals
Ground terminals
Greater than
2 A and 4 A or less
Possible
Greater than
4A
Possible
*1
---
Possible
Solid wire
Unplated
Plated
Unplated
Possible
Possible
Possible
Not
Possible
Possible
Possible
*1
Not
Possible
Possible
*2
Not
Possible
Possible
*2
Wire size
Conductor length
(stripping length)
0.08 to 1.5 mm2
AWG28 to 16
8 to 10 mm
2.0 mm2
9 to 10 mm
*1 Secure wires to the screwless clamping terminal block. Refer to the Securing Wires in the USER'S MANUAL for how to secure wires.
*2 With the NX-TB@@@1 Terminal Block, use twisted wires to connect the ground terminal. Do not use a solid wire.
Conductor length (stripping length)
<Additional Information> If more than 2 A will flow on the wires, use plated wires or use ferrules.
29
NX-OD/OC
M3 Screw Terminal Block Type
NX Units (30 mm Width)
(A)
(B)
(C)
Letter
(A)
Name
NX bus connector
Function
This connector is used to connect each Unit.
(B)
Indicators
The indicators show the current operating status of the Unit.
(C)
Screw terminals
These screw terminals are used to connect the wires.
Connector Types
NX Units (30 mm Width)
● Units with MIL Connectors (1 Connector with 20 Terminals)
(A)
(B)
(C)
Letter
(A)
Name
NX bus connector
Function
This connector is used to connect each Unit.
(B)
Indicators
The indicators show the current operating status of the Unit.
(C)
Connectors
The connectors are used to connect to external devices.
30
NX-OD/OC
● Units with MIL Connectors (1 Connector with 40 Terminals)
(A)
(B)
(C)
Letter
Name
Function
(A)
NX bus connector
This connector is used to connect each Unit.
(B)
Indicators
The indicators show the current operating status of the Unit.
(C)
Connectors
The connectors are used to connect to external devices.
● Units with Fujitsu Connectors (1 Connector with 40 Terminals)
(A)
(B)
(C)
Letter
(A)
Name
NX bus connector
Function
This connector is used to connect each Unit.
(B)
Indicators
The indicators show the current operating status of the Unit.
(C)
Connectors
The connectors are used to connect to external devices.
31
NX-OD/OC
Dimensions
(Unit/mm)
Screwless Clamping Terminal Block Type
12 mm Width
14.1
0.55 *
12.0
1.5
100
104.5
65.2
1.5
71
80.1
* The dimension is 1.35 mm for Units with lot numbers through December 2014.
M3 Screw Terminal Block Type
30 mm Width
16.1
1.5
104.5
100
30
1.5
65.2
71
32.1
95
32
NX-OD/OC
Connector Types
30 mm Width
● Units with MIL Connectors (1 Connector with 20 Terminals)
16.1
1.5
104.5
100
58.3
27.85
19.1
65.2
1.5
71
30
89.52
32.1
● Units with MIL Connectors (1 Connector with 40 terminals)
16.1
1.5
104.5
100
83.7
38
19.1
30
32.1
1.5
65.2
71
89.52
33
NX-OD/OC
●Units with Fujitsu Connectors (1 Connector with 40 Terminals)
16.1
1.5
104.5
100
38
1.5
19.4
65.2
71
30
72.5
32.1
(118.5)
Related Manuals
Cat. No.
W521
Model number
NX-IA@@@@
NX-ID@@@@
NX-OD@@@@
NX-OC@@@@
NX-MD@@@@
Manual name
NX-series Digital I/O
Units User’s Manual
Application
Description
Learning how to use NX-series The hardware, setup methods, and functions of the NXDigital I/O Units
series Digital I/O Units are described.
34
Terms and Conditions Agreement
Read and understand this catalog.
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you
have any questions or comments.
Warranties.
(a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship
for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron
disclaims all other warranties, express or implied.
(b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER
ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the
Products or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at
Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or
replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount
equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty,
repair, indemnity or any other claims or expenses regarding the Products unless Omron’s analysis confirms that the Products
were properly handled, stored, installed and maintained and not subject to contamination, abuse, misuse or inappropriate
modification. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall
not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or
electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice,
recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above
warranty.
See http://www.omron.com/global/ or contact your Omron representative for published information.
Limitation on Liability; Etc.
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted.
Suitability of Use.
Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable
third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself
is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine,
system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product
with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE
QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Programmable Products.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence
thereof.
Performance Data.
Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining
suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate
it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability.
Change in Specifications.
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our
practice to change part numbers when published ratings or features are changed, or when significant construction changes are
made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers
may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at
any time to confirm actual specifications of purchased Product.
Errors and Omissions.
Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
2016.4
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2016 All Right Reserved.
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