OMRON NX-SI / SO lineup

last update: August 1, 2018

Safety Input Units

Unit type	Ap- pear- ance	Specification							Unit version	Model
		Number of safety input points	Number of test output points	Internal I/O common	Rated input voltage	OMRON special safety input devices	Number of safety slave con- nections	I/O re- freshing method
Safety Input Units		4 points	2 points	Sinking inputs (PNP)	24 VDC	Can be connected. *	1	Free-Run refreshing	Ver. 1.1	NX-SIH400
		8 points	2 points	Sinking inputs (PNP)	24 VDC	Cannot be connected.	1	Free-Run refreshing	Ver. 1.0	NX-SID800

* The following OMRON special safety input devices can be connected directly without a special controller.
  For detail of connectable OMRON special safety input devices,refer to NX-series Safety Control Units User's Manual
   (Cat.No.Z930).

Type	Model and corresponding PL and safety category
OMRON Single-beam Safety Sensors	E3ZS and E3FS
OMRON Non-contact Door Switches	D40Z D40A
OMRON Safety Mats	UM, UMA
OMRON Safety Edges	SGE (4-wire connection)

Safety Output Units

Unit type	Ap- pear- ance	Specification						Unit version	Model
		Number of safety output points	Internal I/O common	Maximum load current	Rated voltage	Number of safety slave con- nections	I/O re- freshing method
Safety Output Units		2 points	Sourcing outputs (PNP)	2.0 A/point, 4.0 A/ Unit at 40°C, and 2.5 A/Unit at 55°C The maximum load current depends on the installation orientation and ambient temperature.	24 VDC	1	Free-Run refreshing	Ver. 1.0	NX-SOH200
		4 points	Sourcing outputs (PNP)	0.5 A/point and 2.0 A/Unit	24 VDC	1	Free-Run refreshing	Ver. 1.0	NX-SOD400

Option

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

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

Configuration Devices

NX-series Communications Coupler Units

Product name	Appearance	Supported communications protocol	NX Unit power consumption	Maximum I/O power supply current	Model
EtherCAT Coupler Unit *1		Communications cycle in DC Mode *2 250 to 4,000 μs	1.45 W or lower	4 A	NX-EEC201
		Communications cycle in DC Mode *2 125 to 10,000 μs	1.25 W or lower	10 A	NX-EEC202
					NX-EEC203
EtherNet/IP Coupler Unit *1		EtherNet/IP	1.60 W or lower	10 A	NX-EIC202

Note: For details, refer to your local OMRON website.
*1 One End Cover NX-END01 is provided with the NX-series Communications Coupler Units.
*2 This depends on the specifications of the EtherCAT master. For example, the values are as follows when the EtherCAT
    Coupler Unit is connected to the built-in EtherCAT port on an NJ5-series CPU Unit: 500 μs, 1,000 μs, 2,000 μs, and
    4,000 μs. Refer to the NJ/NX-series CPU Unit Built-in EtherCAT Port User's Manual (Cat. No. W505) for the specifications
    of the built-in EtherCAT ports on NJ/NX-series CPU Units.
    This also depends on the unit configuration.

Automation Software Sysmac Studio

Please purchase a DVD and required number of licenses the first time you purchase the Sysmac Studio. DVDs and licenses are available individually. Each model of licenses does not include any DVD.

Product name	Specifications			Model
		Number of licenses	Media
Sysmac Studio NX-I/O Edition Ver.1.[][] *1	Sysmac Studio NX-I/O Edition is a limited license that provides selected functions required for EtherNet/IP Coupler settings. * Because this product is a license only, you need the Sysmac Studio Standard Edition DVD media to install it.	1 license	---	SYSMAC-NE001L
Sysmac Studio Safety Edition Ver.1.[][] *2	Sysmac Studio Safety Edition is a license including necessary setting functions for the safety control system. * Because this product is a license only, you need the Sysmac Studio Standard Edition DVD media to install it.	1 license	---	SYSMAC-FE001L
Sysmac Studio Standard Edition Ver.1.[][] *3*4	The Sysmac Studio is the software that provides an integrated environment for setting, programming, debugging and maintenance of machine automation controllers including the NJ/NX-series CPU Units, NY-series Industrial PC,EtherCAT Slave, and the HMI.	1 license *5	---	SYSMAC-SE201L
	Sysmac Studio runs on the following OS. Windows 7 (32-bit/64-bit version)/8(32-bit/64-bit version)/8.1 (32-bit/64-bit version)/10 (32-bit/64- bit version) * Refer to your OMRON website for details such as supported models and functions.	(Media only)	DVD	SYSMAC-SE200D

*1 With the NX-I/O Edition, you can use only the setup functions for EtherNet/IP Coupler.
*2 Safety Edition can be used with Communication Control Unit and EtherNet/IP Coupler Unit.
*3 The Sysmac Studio Standard Edition with license(s) (SYSMAC-SE[][][]L) provides functions of the NX-I/O Edition
     (SYSMAC-NE001L).
*4 With the Sysmac Studio Standard Edition with license(s) (SYSMAC-SE[][][]L) version 1.10 or higher, you can use the
     setup functions for the EtherNet/IP Coupler.
*5 Multi licenses are available for the Sysmac Studio (3, 10, 30, or 50 licenses).

last update: August 1, 2018

OMRON NX-SI / SO catalog

• Catalog
• Manual
• CAD

English

Global Edition

For ordering in Singapore, please note some product models not sold in Singapore may be included in the following catalog(s) for our global customers.

*It is recommended to select “Save” from the right-click due to large size of catalog PDF data.

Catalog Name	Catalog Number [size]	Last Update
NX-SL/SI/SO Data Sheet	- [2905KB]	Nov 01, 201820181101	NX-SL/SI/SO Data Sheet
NX-Series Safety Controller Stand-alone System brochure	F100-E1-01 [1306KB]	Feb 15, 201820180215	NX-Series Safety Controller Stand-alone System brochure
NX-series Safety Controller (EtherCAT System) Catalog	F101-E1-01 [1136KB]	Feb 15, 201820180215	NX-series Safety Controller (EtherCAT System) Catalog

OMRON NX-SI / SO dimension

last update: August 1, 2018

(Unit: mm)

Safety Input Units NX-SIH400/SID800
Safety Output Units NX-SOH200/SOD400

*1 The dimension is 1.35 mm for Units with lot numbers through December 2014.
*2 The dimension from the attachment surface of the DIN Track to the front surface of the Safety I/O Unit.

last update: August 1, 2018

OMRON NX-SI / SO specification

last update: November 1, 2018

Regulations and Standards

NX-series Safety Control Units NX-SL3/SI/SO

Certification body	Standards
TÜV Rheinland *	• EN ISO 13849-1 • EN ISO 13849-2 • IEC 61508 parts 1-7 • IEC/EN 62061 • IEC/EN 61131-2 • IEC 61326-3-1
UL	• NRAG (UL 508 and ANSI/ISA 12.12.01) • NRAG7 (CSA C22.2 No. 142 and CSA C22.2 No. 213)

* The FSoE was certified for applications in which OMRON FSoE devices are connected to each other.

The NX-series Safety Control Units allow you to build a safety control system that meets the following standards.
• Requirements for SIL 3 (Safety Integrity Level 3) in IEC 61508, EN 62061, (Functional Safety of Electrical/Electronic/
  Programmable Electronic Safety-related Systems)
• Requirements for PLe (Performance Level e) and for safety category 4 in EN ISO13849-1
The NX-series Safety Control Units are also registered for RCM, EAC, and KC compliance.

General Specifications

Item		Specification
Enclosure		Mounted in a panel (open)
Grounding method		Ground to 100 Ω or less.
Operating environment	Ambient operating temperature	0 to 55°C (The upper limit of the ambient operating temperature is restricted by the installation orientation.)
	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	2 or less: Conforms to JIS B3502 and IEC 61131-2.
	Noise immunity	Conforms to IEC 61131-2. 2 kV on power supply line (Conforms to IEC 61000-4-4.)
	Insulation class	Class III (SELV)
	Overvoltage category	Category II: Conforms to JIS B3502 and IEC 61131-2.
	EMC immunity level	Zone B
	Vibration resistance	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 minutes each in X, Y, and Z directions (10 sweeps of 10 min each = 100 min total)
	Shock resistance	Conforms to IEC 60068-2-27. 147 m/s2, 3 times each in X, Y, and Z directions
	Insulation resistance	20 MΩ between isolated circuits (at 100 VDC)
	Dielectric strength	510 VAC for 1 min between isolated circuits, leakage current: 5 mA max.
Installation method		DIN Track (IEC 60715 TH35-7.5/TH35-15)

Specifications of Individual Units

Safety Input Units NX-SIH400/SID800

Unit name	Safety Input Unit
Model	NX-SIH400	NX-SID800
Number of safety input points	4 points	8 points
Number of test output points	2 points	2 points
Internal I/O common	PNP (sinking inputs)
Rated input voltage	24 VDC (20.4 to 28.8 VDC)
OMRON special safety input devices	Can be connected.	Cannot be connected.
Number of safety slave connections	1
I/O refreshing method	Free-Run refreshing
External connection terminals	Screwless clamping terminal block (8 terminals)	Screwless clamping terminal block (16 terminals)
Indicators	[TS] LED, [FS] LED, [IN] LED, [IN ERR] LED	[TS] LED, [FS] LED, [IN] LED, [IN ERR] LED
Safety input current	4.5 mA typical	3.0 mA typical
Safety input ON voltage	11 VDC min.	15 VDC min.
Safety input OFF voltage/OFF current	5 VDC max., 1 mA max.
Test output type	Sourcing outputs (PNP)
Test output load current	25 mA max.	50 mA max.
Test output residual voltage	1.2 V max. (Between IOV and all output terminals)
Test output leakage current	0.1 mA max.
Dimensions	12 × 100 × 71 mm (W × H × D)
Isolation method	Photocoupler isolation
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)
Dielectric strength	510 VAC for 1 min between isolated circuits, leakage current: 5 mA max.
I/O power supply method	Power supplied from the NX bus
Current capacity of I/O power supply terminals	No applicable terminals.
NX Unit power consumption	• Connected to a CPU Unit or a Communication Control Unit 1.10 W max. • Connected to a Communications Coupler Unit 0.70 W max.	• Connected to a CPU Unit or a Communication Control Unit 1.10 W max. • Connected to a Communications Coupler Unit 0.75 W max.
Current consumption from I/O power supply	20 mA max.
Weight	70 g max.
Circuit layout
Terminal connection diagram	Si0 to Si3: Safety input terminals T0 and T1: Test output terminals Refer to User's manual (Cat.No.Z930) for details.	Si0 to Si7: Safety input terminals T0 and T1: Test output terminals Refer to User's manual (Cat.No.Z930) for details.
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit or a Communication Control Unit Possible in the upright installation orientation. • Connected to a Communications Coupler Unit 6 possible orientations. Restrictions: Maximum ambient temperature is 50ºC for any orientation other than upright installation.
Protective functions	Overvoltage protection circuit and short detection (test outputs)

Safety Output Units NX-SOH200/SOD400

Unit name	Safety Output Unit
Model	NX-SOH200	NX-SOD400
Number of safety output points	2 points	4 points
Internal I/O common	PNP (sourcing outputs)
Maximum load current	2.0 A/point 4.0 A/Unit at 40°C 2.5 A/Unit at 55°C The maximum load current depends on the installation orientation and ambient temperature	0.5 A/point and 2.0 A/Unit
Rated voltage	24 VDC (20.4 to 28.8 VDC)
Number of safety slave connections	1
I/O refreshing method	Free-Run refreshing
External connection terminals	Screwless clamping terminal block (8 terminals)
Indicators	[TS] LED, [FS] LED, [OUT] LED, [OUT ERR] LED	[TS] LED, [FS] LED, [OUT] LED, [OUT ERR] LED
Safety output ON residual voltage	1.2 V max. (Between IOV and all output terminals)
Safety output OFF residual voltage	2 V max. (Between IOG and all output terminals)
Safety output leakage current	0.1 mA max.
Dimensions	12 × 100 × 71 mm (W × H × D)
Isolation method	Photocoupler isolation
Insulation resistance	20 MΩ min. between isolated circuits (at 100 VDC)
Dielectric strength	510 VAC for 1 min between isolated circuits, leakage current: 5 mA max.
I/O power supply method	Power supplied from the NX bus
Current capacity of I/O power supply terminals	IOG: 2 A max./terminal	IOG (A3 and B3): 2 A max./terminal IOG (A7 and B7): 0.5 A max./terminal
NX Unit power consumption	• Connected to a CPU Unit or a Communication Control Unit 1.05 W max. • Connected to a Communications Coupler Unit 0.70 W max.	• Connected to a CPU Unit or a Communication Control Unit 1.10 W max. • Connected to a Communications Coupler Unit 0.75 W max.
Current consumption from I/O power supply	40 mA max.	60 mA max.
Weight	65 g max.
Circuit layout
Terminal connection diagram	So0 and So1: Safety output terminals IOG: I/O power supply 0 V Refer to User's manual (Cat.No.Z930) for details.	So0 to So3: Safety output terminals IOG: I/O power supply 0 V Refer to User's manual (Cat.No.Z930) for details.
Installation orientation and restrictions	Installation orientation: • Connected to a CPU Unit or a Communication Control Unit Possible in the upright installation orientation. • Connected to a Communications Coupler Unit 6 possible orientations Restrictions: For upright installation, the ambient temperature is restricted as shown below depending on the total Unit load current. For all installation orientations other than upright installation, the ambient temperature is restricted as shown below according to the total Unit load current.	Installation orientation: • Connected to a CPU Unit or a Communication Control Unit Possible in the upright installation orientation. • Connected to a Communications Coupler Unit 6 possible orientations Restrictions: None
Protective functions	Overvoltage protection circuit and short detection

Function Specifications

Item			Function
Setting Parameters	Safety I/O Settings		You make a setting for safety process data communications and connection with safety I/O devices.
		Safety Process Data Communications Settings	You select Safety I/O Units to perform safety process data communications (FSoE communications) and make necessary settings.
		Safety Device Allocation Settings	You set the connection between Safety I/O Units and safety devices.
	EtherNet/IP Safety Connection Settings *1		You can register target devices of EtherNet/IP Safety network and configure the connection settings.
	Standard I/O Settings	Exposed Variable Settings	You set whether to expose global variables of the Safety CPU Unit. The values of exposed variables can be referenced from NJ/NX- series CPU Units and NY-series Industrial PCs.
		Standard Process Data Communications *2	You set the devices and ports of the Standard I/O Units for the exposed variables of the Safety CPU Unit.
	Safety Task Settings		You define the execution cycle and timing of the safety task and programs to be executed in the task.
		Assigning Programs	You assign safety programs to execute to the task.
	I/O Map Settings		The ports of Safety I/O Units used in safety process data communications are displayed. You assign device variables used in safety programs to the I/O ports.
Creating Safety Programs	Instruction List (Toolbox)		A hierarchy of the functions and function blocks that you can use is displayed in the Toolbox. You can drag the required functions and function blocks onto the FBD editor to insert it to a safety program.
	FBD Programming		You connect variables, functions, and function blocks with connecting lines to build networks. The FBD editor is used to enter them.
		Adding FBD Networks	You create FBD networks on the FBD editor to create algorithms.
		Inserting and Deleting Functions and Function blocks	You insert and delete functions and function blocks on the FBD editor.
		Entry Assistance	When you enter functions, function blocks, or parameters, each character that you enter from the keyboard narrows the list of candidates that is displayed for selection.
		Commenting Out FBD Networks	You can comment out each FBD network. When a network is commented out, it is no longer executed.
		Converting Programs into Function Blocks *1	You can convert the safety program into user-defined function block.
	Automatic Programming *1		A safety programs can be automatically generated from input and output signals and expected values of the program.
	Creating Variables		You create variables used in safety programs in the global or local variable table.
	User-defined Function Blocks		You create user-defined function blocks.
		Help Reference *3	You can display the user-defined function block help with the popup menu or shortcut key.
	Export/Import		POUs can be exported and imported.
		Programs *4	You can export/import POUs.
		User-defined Function Blocks *3	You can export/import user-defined function blocks.
	Searching and Replacing		You can search for and replace strings in the variable tables, programs, and function blocks of a Safety CPU Unit.
Debugging	Monitoring		Variables are monitored during safety program execution. You can monitor the present values of device variables assigned to Safety I/O Units and user-defined variables. The values can be monitored on the FBD editor or Watch Tab Page.
	Changing the Present Values of Variables		You can change the present values of user-defined variables and device variables as required. You can do this on the FBD editor or Watch Tab Page.
	Forced Refreshing		The inputs from external devices and outputs to external devices are refreshed with a specified value on the Sysmac Studio. The specified value is retained even if the value of the variable is overwritten from the user program. You can use forced refreshing on the FBD editor or Watch Tab Page.
	Offline Debugging *5		You can check if the control program logic works as designed in advance using a special debugging function for the Simulator without connecting online with the Safety CPU Unit.
		Initial Value Settings *6	You can set the initial values of variables when you start execution of simulation.
		Feedback Settings *6	You can set input status that is linked to changes in output status when simulator is running.
		Simple Automatic Test *7	You can check that expected values of the outputs to the inputs of the program are designed as intended using the Simulator functions of the Safety CPU Unit.
	User Memory Usage Monitor *6		The memory usage of the safety control system and usage of safety network such as I/O data size are displayed.
Debugging	Online Functional Test *1		This function helps you to check the safety functional operation of the safety system. You can produce output device operation relative to the input and check whether the system operates as expected. It is possible to output the check results.
Safety	Safety Validation		You append the "safety-validated" information to a safety program when you can ensure safety of the program after you complete debugging.
	Changing Operating Mode		There are four operating modes; PROGRAM mode, DEBUG mode (STOPPED), DEBUG mode (RUN), and RUN mode. The RUN mode can be selected only for the validated safety programs.
Mainte- nance	Generating Safety Data Logging Settings File *1		Settings to use the safety data logging function can be generated as a file.
	Generating Safety Unit Restore File *1		A file of safety program and settings to be transferred to the Safety CPU Unit using an SD memory card is generated for Safety Unit Restore function.
Security Measures	Prevention of Incorrect Connections	Setting the Node Name	You set a unique name for each Safety CPU Unit to confirm that you operate the correct Safety CPU Unit.
	Prevention of Incorrect Operation	Safety Password	You can prevent unauthorized access to safety functions of Safety CPU Units by setting a safety password for online operations that affect the safety functions.
	Prevention of Theft of Assets	Data Protection (Programs) *4	You can set passwords for individual programs to prohibit displaying or changing them.
		Data Protection (User-defined Function Blocks) *3	You can set passwords for individual user-defined function blocks to prohibit displaying or changing them.

Note: Supported only by the Sysmac Studio version 1.07 or higher.
*1. Supported only by the Sysmac Studio version 1.24 or higher.
*2. Supported if the EtherNet/IP Coupler is selected with Sysmac Studio version 1.11 or higher.
*3. Supported only by the Sysmac Studio version 1.12 or higher.
*4. Supported only by the Sysmac Studio version 1.17 or higher.
*5. Supported only by the Sysmac Studio version 1.08 or higher.
*6. Supported only by the Sysmac Studio version 1.10 or higher.
*7. Supported only by the Sysmac Studio version 1.15 or higher.
Refer to the SYSMAC-SE[][][] Datasheet for function specifications of the Safety Control Unit.

Version Information

• Relationship between Unit Versions and Sysmac Studio Versions

EtherCAT Slave Terminal and EtherNet/IP Slave Terminal

• This configuration is used to connect the Safety Control Unit to the EtherCAT Coupler Units, and the EtherCAT Slave
   Terminal to the built-in EtherCAT master of the CPU Unit via EtherCAT.
• This configuration is used to connect the Safety Control Units to the EtherNet/IP Coupler Units.

NX Unit		Corresponding version *1
Model number	Unit version	EtherCAT Coupler Unit NX-ECC20[]	NJ/NX-series CPU Units *2	Sysmac Studio	ErherNet/IP Coupler Unit (NX-EIC202)	Sysmac Studio
NX-SIH400	1.0	1.1 or later	1.06 or later	1.07 or later	---	---
	1.1			1.10 or later	1.0 or later	1.10 or later
NX-SID800	1.0			1.07 or later
NX-SOH200
NX-SOD400

*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 These Units cannot be mounted to Machine Automation Controllers with NX1P CPU Units. Mount and use an EtherCAT
     Coupler Unit instead.

CPU Rack

• This configuration is used to connect the Safety Control Units to the CPU Units.

Safety Control Unit model and version		NX bus master: CPU Unit
Model	Unit version	NX102 CPU Units	Sysmac Studio
NX-SIH400	Ver. 1.0	Ver. 1.30	Ver. 1.22
	Ver. 1.1
NX-SID800	Ver. 1.0
NX-SOH200
NX-SOD400

last update: November 1, 2018

• NO. NX-SI / SO
• TYPE:Machine Automation Controllers Safety Control Unit NX-Series Safety I/O Unit
• DATE:2021-06-10
• Associated products:
  NX-SL Safety CPU Unit/Features NE1A-SCPU Series Safety Network Controller/Features