Omron NX-SL3300, NX-SL3500, NX-SL5500, NX-SIH800, NX-SOH200 User Manual

Machine Automation Controller

NX-series

Safety Control Unit

User's Manual

NX-SL££££
NX-SI££££
NX-SO££££

Safety Control Unit

Z930-E1-13

NOTE

(1) All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or

transmitted, in any form, or by any means, mechanical, electronic, photocopying, recording, or
otherwise, without the prior written permission of OMRON.

(2) No patent liability is assumed with respect to the use of the information contained herein.

Moreover, because OMRON is constantly striving to improve its high-quality products, the infor­mation contained in this manual is subject to change without notice.

Every precaution has been taken in the preparation of this manual. Nevertheless, OMRON as-

(3)

sumes no responsibility for errors or omissions.
Neither is any liability assumed for damages resulting from the use of the information contained
in this publication.

Trademarks

• Sysmac and SYSMAC are trademarks or registered trademarks of OMRON Corporation in Japan

and other countries for OMRON factory automation products.

• Microsoft, Windows, Windows Vista, Excel, and V

trademarks of Microsoft Corporation in the United States and other countries.

• EtherCAT

GmbH, Germany.

• Safety over EtherCAT

Automation GmbH, Germany.

®

is registered trademark and patented technology, licensed by Beckhoff Automation

®

is a registered trademark and a patented technology licensed by Beckhoff

isual Basic are either registered trademarks or

• ODVA, CIP, CompoNet, DeviceNet, EtherNet/IP, and CIP Safety are trademarks of ODVA.

• The SD and SDHC logos are trademarks of SD-3C, LLC.

Other company names and product names in this document are the trademarks or registered trade­marks of their respective companies.

Copyrights

• Microsoft product screen shots reprinted with permission from Microsoft Corporation.

• This product incorporates certain third party software. The license and copyright information associ-

ated with this software is available at http://www

.fa.omron.co.jp/nj_info_e/.

Introduction

Thank you for purchasing an NX-series Safety Control Unit.
This manual contains information that is necessary to use the NX-series Safety Control Unit.
Please read this manual and make sure you understand the functionality and performance of the Unit
before you attempt to use it in a control system.
Keep this manual in a safe place where it will be available for reference during operation.

Intended Audience

This manual is intended for the following personnel, who must also have knowledge of electrical sys­tems (an electrical engineer or the equivalent).

• Personnel in charge of introducing FA systems.

• Personnel in charge of designing FA systems.

• Personnel in charge of installing and maintaining FA systems.

• Personnel in charge of managing FA systems and facilities.

• Personnel with the qualifications, authority, and responsibility for providing safety at each phase of
the lifecycle of the machine: design, installation, operation, maintenance, and disposal.

• Personnel with a knowledge of functional safety.

For programming, this manual is intended for personnel who understand the programming language
specifications in international standard IEC 61131-3 or Japanese standard JIS B 3503.

Introduction

Applicable Products

This manual covers the following products.

• NX-series Safety Control Units
NX-SL££££
NX-SI££££
NX-SO££££

Note that this manual provides information for using an NX-series Safety Control Unit described above
together with an NJ/NX-series CPU Unit, an EtherCAT Coupler Unit, or with an EtherNet/IP Coupler
Unit. When you use it with an NX-CSG320 Communication Control Unit, refer to the NX-series Safety
Control Unit / Communication Control Unit User's Manual (Cat. No. Z395).

NX-series Safety Control Unit User's Manual (Z930)

1

Introduction

2

NX-series Safety Control Unit User's Manual (Z930)

Sections in this Manual

1 10

2

3

4

5

6

7

8

9

1

10

2

3

11

12

4

13

5 A

6 I

8

9

Overview

Specifications

Safety Unit Restore

Installation and Wiring

Safety Control Unit
Operation

Programming

12

Troubleshooting

System Configuration
and Setup

11

Safety Data Logging

A

Appendices

I

Index

13

Inspection and
Maintenance

Checking Operation and Actual Operation

Calculating Safety Reaction Times

Communications Load

7

Sections in this Manual

NX-series Safety Control Unit User's Manual (Z930)

3

CONTENTS

CONTENTS

Introduction .............................................................................................................. 1

Intended Audience...........................................................................................................................................1

Applicable Products

Sections in this Manual ........................................................................................... 3

Relevant Manuals................................................................................................... 11

Manual Structure.................................................................................................... 13

Page Structure...............................................................................................................................................13

Special Information ........................................................................................................................................ 14

Precaution on Terminology ............................................................................................................................14

Terms and Conditions Agreement........................................................................ 15

Warranty, Limitations of Liability ....................................................................................................................15

Application Considerations ............................................................................................................................16

Disclaimers ....................................................................................................................................................16

.........................................................................................................................................1

Safety Precautions................................................................................................. 18

Definition of Precautionary Information..........................................................................................................18

Symbols ......................................................................................................................................................... 18

Warnings........................................................................................................................................................19

Precautions for Safe Use ...................................................................................... 24

Precautions for Correct Use ................................................................................. 29

Regulations and Standards .................................................................................. 31

Conformance to EU Directives ......................................................................................................................31

Conformance to EN ISO 13849-1 and EN 62061..........................................................................................32

Conformance to UL and CSA Standards.......................................................................................................33

Conformance to Shipbuilding Standards .......................................................................................................33

Conformance to KC Certification ...................................................................................................................33

Unit Versions.......................................................................................................... 35

Unit Versions..................................................................................................................................................35

Unit Versions of Units and Sysmac Studio Versions......................................................................................36

Related Manuals..................................................................................................... 37

Terminology............................................................................................................ 39

Revision History..................................................................................................... 42

Section 1 Overview

1-1 Introduction and Features...................................................................................................1 - 2

1-1-1 Overview of Safety Control Unit

1-1-2 Features of Safety Control Unit.................................................................................................1 - 5

1-2 System Configuration and Configuration Devices ........................................................... 1 - 8

1-2-1 Safety Control System Configuration on NX bus of CPU Unit or EtherCAT Network ...............1 - 8

1-2-2 Safety Control System Configuration on EtherNet/IP Network ...............................................1 - 10

1-2-3 Standalone Safety Control System Configuration...................................................................1 - 10

4

................................................................................................1 - 2

NX-series Safety Control Unit User's Manual (Z930)

1-2-4 Types of Safety Control Unit ...................................................................................................1 - 11

1-3 Support Software

1-3-1 Applicable Support Software...................................................................................................1 - 12

1-3-2 Connection Method and Procedures for EtherCAT Coupler Units ..........................................1 - 12

1-3-3 Connection Method and Procedures for EtherNet/IP Coupler Units .......................................1 - 14

...............................................................................................................1 - 12

1-4 Commissioning Procedures .............................................................................................1 - 15

1-4-1 Overall Procedure ...................................................................................................................1 - 15

1-4-2 Detailed Procedures................................................................................................................1 - 16

Section 2 Specifications

2-1 Safety CPU Unit....................................................................................................................2 - 2

2-1-1 Models and Specifications

2-1-2 Part Names and Functions........................................................................................................2 - 8

2-1-3 Indicators.................................................................................................................................2 - 10

2-2 Safety Input Unit ................................................................................................................2 - 16

2-2-1 Models and Specifications ......................................................................................................2 - 16

2-2-2 Part Names and Functions......................................................................................................2 - 22

2-2-3 Indicators.................................................................................................................................2 - 24

2-3 Safety Output Unit .............................................................................................................2 - 28

2-3-1 Models and Specifications ......................................................................................................2 - 28

2-3-2 Part Names and Functions......................................................................................................2 - 35

2-3-3 Indicators.................................................................................................................................2 - 38

2-4 PFH......................................................................................................................................2 - 41

CONTENTS

........................................................................................................2 - 2

Section 3 Installation and Wiring

3-1 Installing Units .....................................................................................................................3 - 2

3-1-1 Installing NX Units

3-1-2 Attaching Markers .....................................................................................................................3 - 4

3-1-3 Removing Units.........................................................................................................................3 - 5

3-1-4 Installation Orientation ..............................................................................................................3 - 6

.....................................................................................................................3 - 2

3-2 Power Supply Types and Wiring ........................................................................................3 - 8

3-2-1 Applications of I/O Power Supply and Supply Methods ............................................................3 - 8

3-2-2 Calculating the Total Current Consumption from I/O Power Supply .........................................3 - 9

3-3 Wiring the Terminals..........................................................................................................3 - 10

3-3-1 Wiring to the Screwless Clamping Terminal Blocks ................................................................3 - 10

3-3-2 Checking Wiring ......................................................................................................................3 - 23

Section 4 Safety Control Unit Operation

4-1 Relationship between Units and Types of Communications...........................................4 - 2

4-1-1 Safety Control System on CPU Rack or EtherCAT Network.....................................................4 - 2

4-1-2 Safety Control System on EtherNet/IP Network........................................................................4 - 4

4-1-3 Standalone Safety Control System ...........................................................................................4 - 6

4-2 I/O System ............................................................................................................................4 - 8

4-2-1 Relationship between the Types of Signals and the Types of Communications.......................4 - 8

4-2-2 Safety Data Types and Standard Data Types...........................................................................4 - 8

4-2-3 Specifying Safety Data Types and Standard Data Types .........................................................4 - 9

4-3 Safety I/O Function ............................................................................................................4 - 10

4-3-1 Safety Input Function ..............................................................................................................4 - 10

4-3-2 Safety Output Function ...........................................................................................................4 - 32

NX-series Safety Control Unit User's Manual (Z930)

5

CONTENTS

Section 5 System Configuration and Setup

5-1 Configuration and Setup Procedures ................................................................................5 - 2

5-2 Part Names and Functions of the Sysmac Studio W

5-3 Controller Configuration and Setup of the Safety Control Units ....................................5 - 5

5-3-1 Procedures for Creating the Controller Configuration for Safety Control ..................................5 - 6

5-3-2 Setting and Viewing the Safety Control Unit Settings ...............................................................5 - 9

5-3-3 Procedure to Change the Model of the Safety Control Unit ....................................................5 - 10

5-4 Setting Up the Safety Process Data Communications...................................................5 - 12

5-4-1 Setting Up the FSoE Communications....................................................................................5 - 12

5-4-2 Setting Up the CIP Safety Communications ...........................................................................5 - 13

5-4-3 Calculating the Number of Connections..................................................................................5 - 20

5-5 Safety I/O Functions ..........................................................................................................5 - 23

5-6 Registering Device Variables............................................................................................5 - 26

5-7 Exposing Variables to Standard Controllers...................................................................5 - 30

5-7-1 Exposing Global Variables ......................................................................................................5 - 30

5-7-2 Setting Exposed Variables ......................................................................................................5 - 31

5-7-3 Safety CPU Unit Status...........................................................................................................5 - 35

5-7-4 I/O Ports for Safety I/O Units...................................................................................................5 - 36

5-7-5 I/O Refreshing Method ............................................................................................................5 - 36

5-8 Setting Standard Process Data Communications ..........................................................5 - 37

5-8-1 Using an CPU Unit or EtherCAT Coupler Unit ........................................................................5 - 37

5-8-2 Using an EtherNet/IP Coupler Unit .........................................................................................5 - 37

5-9 Exporting/Importing Settings Data...................................................................................5 - 39

5-9-1 Exporting/Importing the Settings for the Entire Slave Terminal...............................................5 - 39

5-9-2 Exporting/Importing the Settings for All the NX Units on a CPU Rack or Slave Terminal.......5 - 41

5-9-3 Exporting/Importing Data for Individual Safety CPU Unit........................................................5 - 42

indow .............................................5 - 3

Section 6 Programming

6-1 POUs (Program Organization Units) .................................................................................. 6 - 3

6-1-1 POU

6-1-2 Overview of the Three Types of POUs......................................................................................6 - 3

6-1-3 Differences between Programs, Functions, and Function Blocks.............................................6 - 4

6-1-4 Details on Programs..................................................................................................................6 - 5

6-1-5 Details on Function Blocks........................................................................................................6 - 6

6-1-6 Details on Functions................................................................................................................6 - 10

6-1-7 Instructions..............................................................................................................................6 - 11

6-2 Variables .............................................................................................................................6 - 12

6-2-1 Variables..................................................................................................................................6 - 12

6-2-2 Types of Variables ...................................................................................................................6 - 12

6-2-3 Type of User-defined Variable .................................................................................................6 - 12

6-2-4 Attributes of Variables .............................................................................................................6 - 13

6-2-5 Data Type................................................................................................................................6 - 14

6-2-6 Variable Attributes Other Than Data Type...............................................................................6 - 16

6-2-7 Function Block Instances ........................................................................................................6 - 17

6-2-8 Restrictions on Variable Names and Other Safety Program-related Names...........................6 - 17

6-3 Constants (Literals) ...........................................................................................................6 - 19

6-3-1 Constants ................................................................................................................................6 - 19

6-3-2 Types of Constants .................................................................................................................6 - 19

6-4 Programming Languages..................................................................................................6 - 21

6-4-1 Programming Languages........................................................................................................6 - 21

6-4-2 FBD Language ........................................................................................................................6 - 21

6-5 Programming Operations..................................................................................................6 - 26

6-5-1 Programming Layer on the Sysmac Studio.............................................................................6 - 26

..........................................................................................................................................6 - 3

6

NX-series Safety Control Unit User's Manual (Z930)

CONTENTS

6-5-2 Registering POUs ...................................................................................................................6 - 27

6-5-3 Registering V

6-5-4 FBD Programming ..................................................................................................................6 - 41

6-5-5 Function Block Conversion for Programs................................................................................6 - 60

6-5-6 Building ..................................................................................................................................6 - 61

6-5-7 Searching and Replacing ........................................................................................................6 - 63

6-5-8 Safety Task Settings................................................................................................................6 - 66

6-6 Automatic Programming ................................................................................................... 6 - 68

6-6-1 Generation Algorithms for Automatic Programming................................................................6 - 68

6-6-2 Automatic Programming Settings............................................................................................6 - 71

6-6-3 Automatic Programming Execution Procedure .......................................................................6 - 74

6-7 Monitoring Memory Usage for Safety Control Unit ........................................................6 - 77

6-8 Offline Debugging..............................................................................................................6 - 79

6-8-1 Offline Safety Program Debugging..........................................................................................6 - 79

6-8-2 Monitoring ...............................................................................................................................6 - 82

6-8-3 Controlling BOOL Variables, Changing Present Values, and Using Forced Refreshing.........6 - 82

6-8-4 Setting the Initial Values of Variables......................................................................................6 - 82

6-8-5 Feedback Settings ..................................................................................................................6 - 83

6-8-6 Simple Automatic Test.............................................................................................................6 - 84

ariables ..............................................................................................................6 - 36

Section 7 Checking Operation and Actual Operation

7-1 Procedures before Operation and Transferring the Required Data................................7 - 3

7-1-1 Commissioning Procedure

7-1-2 Data That You Must Transfer before Operation and Data Transfer Procedures .......................7 - 4

7-2 Transferring the Configuration Information ...................................................................... 7 - 7

7-2-1 Overview ...................................................................................................................................7 - 7

7-2-2 Transfer Procedure for a Connection to NJ/NX-series CPU Unit..............................................7 - 8

7-2-3 Transfer Procedure for a Connection to Communications Coupler Unit ...................................7 - 8

7-3 Operating Modes of the Safety CPU Unit ........................................................................7 - 11

7-3-1 Startup Operating Mode and Changing the Operating Mode.................................................. 7 - 11

7-3-2 Operation When Changing Operating Mode...........................................................................7 - 13

7-3-3 Executable Functions in Each Mode of the Safety CPU Unit..................................................7 - 14

7-4 Changing to DEBUG Mode................................................................................................7 - 17

7-5 Checking External Device Wiring.....................................................................................7 - 20

7-5-1 Overview of Functions for Checking Wiring ............................................................................7 - 20

7-5-2 Monitoring Safety I/O Units .....................................................................................................7 - 20

7-5-3 Troubleshooting Safety I/O Terminals .....................................................................................7 - 24

7-5-4 Clear All Memory Operation for Safety I/O Units ....................................................................7 - 25

7-6 Functions for Checking Operation...................................................................................7 - 27

7-6-1 Overview of Functions for Checking Operation.......................................................................7 - 27

7-6-2 Starting and Stopping the Safety Programs in DEBUG Mode ................................................7 - 27

7-6-3 Monitoring Variables in the FBD Editor ...................................................................................7 - 28

7-6-4 Monitoring Variables in a Watch Tab Page..............................................................................7 - 29

7-6-5 Controlling BOOL Variables, Changing Present Values, and Using Forced Refreshing.........7 - 31

7-7 Online Functional Test ......................................................................................................7 - 40

7-7-1 Online Functional Test Settings...............................................................................................7 - 40

7-7-2 Online Functional Test Execution Procedure ..........................................................................7 - 44

7-8 Node Name .........................................................................................................................7 - 50

7-9 Security Settings................................................................................................................7 - 51

7-9-1 Setting the Safety Password ...................................................................................................7 - 51

7-9-2 Data Protection .......................................................................................................................7 - 52

7-10 Performing Safety Validation and Operation...................................................................7 - 56

7-10-1 Performing Safety Validation...................................................................................................7 - 56

7-10-2 Changing to RUN Mode ..........................................................................................................7 - 57

7-10-3 Changing to PROGRAM Mode ...............................................................................................7 - 58

........................................................................................................7 - 3

NX-series Safety Control Unit User's Manual (Z930)

7

CONTENTS

7-11 Uploading Configuration Information and Safety Application Data .............................7 - 60

7-11-1

7-11-2 Uploading Data for a Connection to an NJ/NX-series CPU Unit.............................................7 - 60

7-11-3 Uploading Data for a Connection to a Communications Coupler Unit ....................................7 - 61

Outline.....................................................................................................................................7 - 60

7-12 Transferring Safety Application Data...............................................................................7 - 63

7-13 Monitoring Controller Status ............................................................................................7 - 64

7-14 Restarting and Clearing All Memory ................................................................................ 7 - 66

7-14-1 Restarting................................................................................................................................7 - 66

7-14-2 Clear All Memory Operation....................................................................................................7 - 67

Section 8 Calculating Safety Reaction Times

8-1 Safety Reaction Time...........................................................................................................8 - 2

8-1-1 Calculating the Safety Reaction T

8-1-2 Verifying Safety Reaction Times ...............................................................................................8 - 4

8-2 Safety Task ...........................................................................................................................8 - 5

8-2-1 Safety Task................................................................................................................................8 - 5

8-2-2 Operation of Safety Task...........................................................................................................8 - 5

8-2-3 Minimum Safety Task Period.....................................................................................................8 - 5

8-2-4 Setting the Safety Task Period..................................................................................................8 - 7

8-3 FSoE Watchdog Timer.........................................................................................................8 - 9

8-3-1 FSoE Watchdog Timers ............................................................................................................8 - 9

8-3-2 Checking FSoE Watchdog Timers ............................................................................................8 - 9

8-3-3 Settings for FSoE Watchdog Timers .......................................................................................8 - 10

8-3-4 Changing FSoE Watchdog Timers..........................................................................................8 - 10

8-4 EPI (Data Packet Interval).................................................................................................. 8 - 11

8-4-1 Changing the EPI .................................................................................................................... 8 - 11

8-4-2 EPI Restrictions....................................................................................................................... 8 - 11

ime .......................................................................................8 - 2

Section 9 Communications Load

9-1 Adjusting the Communications Load ................................................................................9 - 2

9-1-1 Checking Bandwidth Usage for T

9-1-2 Checking the Device Bandwidth Usage of the CIP Safety Routing ..........................................9 - 4

9-1-3 Relationship between the Number of Packets Used per Second and Packet Intervals............9 - 5

9-1-4 Adjusting the Device Bandwidth Usage ....................................................................................9 - 5

ag Data Links ........................................................................9 - 3

Section 10 Safety Unit Restore

10-1 Safety Unit Restore............................................................................................................10 - 2

10-1-1 Generate Safety Unit Restore File Function ...........................................................................10 - 2

10-1-2 Safety Unit Restore Function ..................................................................................................10 - 3

10-1-3 Specifications of a Safety Unit Restore File ............................................................................10 - 6

Section 11 Safety Data Logging

11-1 Outline of the Safety Data Logging Function.................................................................. 11 - 2

Creating a Safety Data Logging Settings File with the Sysmac Studio........................ 11 - 4

11-2

11-3 Safety Data Logging Operation Procedure .....................................................................11 - 6

11-4 Checking the Logging Status ........................................................................................... 11 - 7

11-4-1 Checking the Seven-segment Indicator ..................................................................................11 - 7

11-4-2 Checking with System-defined Variables ................................................................................11 - 7

8

NX-series Safety Control Unit User's Manual (Z930)

11-5 Log File Specifications......................................................................................................11 - 8

Section 12 Troubleshooting

12-1 How to Check for Errors....................................................................................................12 - 2

12-2 Checking for Errors with the Indicators

12-2-1 Troubleshooting the Main Errors in the Safety CPU Unit........................................................12 - 3

12-2-2 Troubleshooting the Main Errors in the Safety I/O Units.......................................................12 - 11

12-3 Checking for Errors with the Sysmac Studio................................................................12 - 14

12-3-1 Checking for Errors from the Sysmac Studio ........................................................................12 - 14

12-3-2 Types of Errors......................................................................................................................12 - 15

12-3-3 Event Codes for Errors and Troubleshooting Procedures.....................................................12 - 17

12-3-4 Error Descriptions .................................................................................................................12 - 31

12-4 Resetting Errors...............................................................................................................12 - 90

12-5 Troubleshooting Flow When Errors Occur....................................................................12 - 91

CONTENTS

..........................................................................12 - 3

Section 13 Inspection and Maintenance

13-1 Cleaning and Inspection ...................................................................................................13 - 2

13-1-1 Cleaning

13-1-2 Periodic Inspections ................................................................................................................13 - 2

..................................................................................................................................13 - 2

13-2 Maintenance Procedures ..................................................................................................13 - 5

13-2-1 Replacing the Safety CPU Unit ...............................................................................................13 - 5

13-2-2 Replacing Safety I/O Units ......................................................................................................13 - 7

Appendices

A-1 Dimensions.......................................................................................................................... A - 3

A-1-1 Safety CPU Unit ....................................................................................................................... A - 3

A-1-2 Safety I/O Units ........................................................................................................................ A - 4

A-2 NX Objects ........................................................................................................................... A - 5

A-2-1 Format of NX Object Descriptions............................................................................................ A - 5

A-2-2 Safety CPU Unit (NX-SL3300/NX-SL3500) ............................................................................. A - 5

A-2-3 Safety CPU Unit (NX-SL5500/NX-SL5700) ............................................................................. A - 7

A-2-4 NX-SID800 Safety Input Unit ..................................................................................................A - 11

A-2-5 NX-SIH400 Safety Input Unit ................................................................................................. A - 16

A-2-6 NX-SOD400 Safety Output Unit............................................................................................. A - 21

A-2-7 NX-SOH200 Safety Output Unit............................................................................................. A - 25

A-3 Application Examples....................................................................................................... A - 30

A-3-1 Emergency Stop Pushbutton Switches .................................................................................. A - 30

A-3-2 Safety Doors .......................................................................................................................... A - 32

A-3-3 Safety Laser Scanners........................................................................................................... A - 36

A-3-4 Safety Door Switches with Magnetic Locks and Key Selector Switches................................ A - 39

A-3-5 Enable Switches..................................................................................................................... A - 43

A-3-6 Two-hand Switches................................................................................................................ A - 47

A-3-7 D40A Non-contact Door Switches.......................................................................................... A - 50

A-3-8 D40Z Non-contact Door Switches.......................................................................................... A - 53

A-3-9 Safety Mats and Safety Light Curtains................................................................................... A - 56

A-3-10 Safety Edges.......................................................................................................................... A - 61

A-3-11 Single Beam Safety Sensor ................................................................................................... A - 63

A-3-12 Multi-axis Servo Drives (STO)................................................................................................ A - 66

A-4 Change Tracking ............................................................................................................... A - 70

A-5 Safety CPU Unit Status..................................................................................................... A - 72

A-5-1 NX-SL3300/NX-SL3500 ......................................................................................................... A - 72

A-5-2 NX-SL5500/NX-SL5700 ......................................................................................................... A - 72

NX-series Safety Control Unit User's Manual (Z930)

9

CONTENTS

A-6 I/O Ports of Safety I/O Units ............................................................................................. A - 74

A-7 CIP Response Codes ........................................................................................................ A - 81

A-8 Icon list for Safety Slave Unit Parameters ...................................................................... A - 86

A-9 Calculating I/O Sizes for CPU Rack or Slave Terminals................................................ A - 93

A-10 Printing .............................................................................................................................. A - 94

A-11 List of Screwless Clamping Terminal Block Models ..................................................... A - 96

A-12 I/O Response Times for Communications between NX Units on EtherNet/IP

A-13 Units That Support Communications between NX Units ............................................ A - 100

A-14 Checking the Signature Code on the Seven-segment Indicator ................................ A - 101

A-15 Execution Scenarios for the Simple Automatic Test................................................... A - 102

A-16 Differences in Checking Operation between the Simulator and Safety CPU Unit.... A - 104

A-17 Version Information ........................................................................................................ A - 105

A-6-1 NX-SIH400 Safety Input Unit

A-6-2 NX-SID800 Safety Input Unit ................................................................................................. A - 76

A-6-3 NX-SOH200 Safety Output Unit............................................................................................. A - 77

A-6-4 NX-SOD400 Safety Output Unit............................................................................................. A - 78

A-7-1 General Status Codes............................................................................................................ A - 81

A-7-2 Extended Status Codes ......................................................................................................... A - 83

A-8-1 External Device Icons for Input Devices ................................................................................ A - 86

A-8-2 Contact Icons for Input Devices ............................................................................................. A - 89

A-8-3 External Device Icons for Output Devices.............................................................................. A - 91

A-8-4 Contact Icons for Output Devices .......................................................................................... A - 92

A-10-1 Selecting the Items to Print .................................................................................................... A - 94

A-10-2 Items that are Printed............................................................................................................. A - 94

A-11-1 Model Notation ....................................................................................................................... A - 96

A-11-2 List of Terminal Block Models................................................................................................. A - 96

................................................................................................. A - 74

Slave Terminals................................................................................................................. A - 98

A-17-1 Relationship between Unit Versions and Sysmac Studio Versions...................................... A - 105

A-17-2 Functions That Were Added or Changed for Each Version ................................................. A - 109

Index

10

NX-series Safety Control Unit User's Manual (Z930)

Relevant Manuals

The following table provides the relevant manuals for this product. Read all of the manuals that are
relevant to your system configuration and application before you use the product.
Most operations on this product are performed from the Sysmac Studio Automation Software. For de­tails on the Sysmac Studio, refer to the Sysmac Studio Version 1 Operation Manual (Cat. No. W504).

Purpose of use

NX-series

Safety Control Unit

User's Manual

User's Manual

Relevant Manuals

NX-series

Safety Control Unit /

Communication Control Unit

NX-series

Communication Control Unit

Built-in Function User's Manual

NX-series

Safety Control Unit

Instructions Reference Manual

Building a safety control system integrated with NJ/NX-ser­ies CPU Units

Building a standalone safety control system with
EtherNet/IP Coupler Units

Building a safety network control system with Communica­tion Control Units

Introduction to Safety Control Unit
Setting devices and hardware

NX-SL5£££ Safety CPU Unit
NX-SL3£££ Safety CPU Unit
NX-SI££££ and NX-SO££££ Safety I/O Units
NX-CSG£££ Communication Control Unit

Software settings

NX-SL5£££ Safety CPU Unit
NX-SL3£££ Safety CPU Unit
NX-SI££££ and NX-SO££££ Safety I/O Units

NX-CSG£££ Communication Control Unit
Creating safety programs
Testing operation and debugging

Safety programs

Safety process data communications

Safety I/O functions

Tag data links

Built-in functions for Communication Control Unit
Learning about error corrections

NX-SL5£££ Safety CPU Unit

NX-SL3£££ Safety CPU Unit

NX-SI££££ and NX-SO££££ Safety I/O Units

NX-CSG£££ Communication Control Unit
Maintenance

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NX-series Safety Control Unit User's Manual (Z930)

11

Relevant Manuals

Purpose of use

NX-series

Safety Control Unit

User's Manual

User's Manual

NX-series

Safety Control Unit /

Communication Control Unit

NX-series

Communication Control Unit

Built-in Function User's Manual

NX-series

Safety Control Unit

Instructions Reference Manual

NX-SL5£££ Safety CPU Unit
NX-SL3£££ Safety CPU Unit
NX-SI££££ and NX-SO££££ Safety I/O Units
NX-CSG£££ Communication Control Unit

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12

NX-series Safety Control Unit User's Manual (Z930)

Manual Structure

4-9

4 Installation and Wir

ing

NJ-series CPU Unit Hardware User’s Manual (W500)

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4-3 Mounting Units

The Units that make up an NJ-series Controller can be connected simply by pressing the Units together
and locking the sliders by moving them toward the back of the Units. The End Cover is connected in the
same way to the Unit on the far right side of the Controller.

1 Join the Units so that the conn ectors fit exactly.

2 The yellow sliders at the top and bottom of each Unit lock the Units together. Move the sliders

toward the back of the Units as shown below until they click into place.

Precautions for Correct UsePrecautions for Correct Use

4-3-1 Connecting Controller Components

Connector

Hook

Hook holes

Slider

Lock

Release

Move the sliders toward the back
until they lock into place.

Level 1 heading
Level 2 heading
Level 3 heading

Level 2 heading

A step in a procedure

Manual name

Special information

Level 3 heading

Page tab

Gives the current
headings.

Indicates a procedure.

Icons indicate
precautions, additional
information, or reference
information.

Gives the number
of the main section.

This illustration is provided only as a sample. It may not literally appear in this manual.

The sliders on the tops and bottoms of the Power Supply Unit, C

PU Unit, I/O Units, Special I/O
Units, and CPU Bus Units must be completely locked (until they click into place) after connecting
the adjacent Unit connectors.

Page Structure

The following page structure is used in this manual.

Manual Structure

NX-series Safety Control Unit User's Manual (Z930)

13

RightLeft

Up

Down

Manual Structure

Special Information

Special information in this manual is classified as follows:

Precautions for Safe Use

Precautions on what to do and what not to do to ensure safe usage of the product.

Precautions for Correct Use

Precautions on what to do and what not to do to ensure proper operation and performance.

Additional Information

Additional information to read as required.
This information is provided to increase understanding or make operation easier.

Version Information

Information on dif
and for dif

ferent versions of the Sysmac Studio is given.

ferences in specifications and functionality for Controller with different unit versions

Precaution on Terminology

In this manual, the directions in relation to the Units are given in the following figure, which shows up­right installation.

14

NX-series Safety Control Unit User's Manual (Z930)

Terms and Conditions Agreement

Terms and Conditions Agreement

Warranty, Limitations of Liability

Warranties

Exclusive Warranty

l

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.

Limitations

l

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.

Buyer Remedy

l

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

NX-series Safety Control Unit User's Manual (Z930)

15

Terms and Conditions Agreement

WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED IN CONTRACT,
WARRANTY

Further, in no event shall liability of Omron Companies exceed the individual price of the Product on
which liability is asserted.

, NEGLIGENCE OR STRICT LIABILITY.

Application Considerations

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’
er’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.

s application or use of the Product. At Buy-

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.

Disclaimers

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’
formance is subject to the Omron’s Warranty and Limitations of Liability.

s test conditions, and the user must correlate it to actual application requirements. Actual per-

16

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

NX-series Safety Control Unit User's Manual (Z930)

Terms and Conditions Agreement

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.

NX-series Safety Control Unit User's Manual (Z930)

17

Indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
Additionally, there may be severe property
damage.

Indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate
injury, or property damage.

WARNING

Ca

ution

Safety Precautions

Safety Precautions

Definition of Precautionary Information

The following notation is used in this manual to provide precautions required to ensure safe usage of
the NX-series Safety Control Unit. The safety precautions that are provided are extremely important to
safety. Always read and heed the information provided in all safety precautions.
The following notation is used.

Symbols

The circle and slash symbol indicates operations that you must not do.
The specific operation is shown in the circle and explained in text.
This example indicates prohibiting disassembly

The triangle symbol indicates precautions (including warnings).
The specific operation is shown in the triangle and explained in text.
This example indicates a precaution for electric shock.

The triangle symbol indicates precautions (including warnings).
The specific operation is shown in the triangle and explained in text.
This example indicates a general precaution.

The filled circle symbol indicates operations that you must do.
The specific operation is shown in the circle and explained in text.
This example shows a general precaution for something that you must do.

.

18

NX-series Safety Control Unit User's Manual (Z930)

Warnings

WARNING

Serious injury may possibly occur due to loss of required safety functions.
When building the system, observe the following warnings to ensure the integrity of the safety-related
components.

Setting Up a Risk Assessment System

The process of selecting these products should include the development and execu­tion of a risk assessment system early in the design development stage to help identify
potential dangers in your equipment and optimize safety product selection.
Related International Standards:

• ISO 12100 General Principles for Design - Risk Assessment and Risk Reduction

Safety Precautions

Protective Measure

When developing a safety system for the equipment and devices that use safety prod­ucts, make every effort to understand and conform to the entire series of international
and industry standards available, such as the examples given below
Related International Standards:

• ISO 12100 General Principles for Design - Risk Assessment and Risk Reduction

• IEC 60204-1 Electrical Equipment of Machines - Part 1: General Requirements

• ISO 13849-1, -2 Safety-related Parts of Control Systems

• ISO 14119 Interlocking Devices Associated with Guards - Principles for Design and
Selection

• IEC/TS 62046 Application of Protective Equipment to Detect the Presence of Per­sons

• IEC 62061 Functional Safety of Safety-related Electrical, Electronic and Programma­ble Electronic Control Systems

• IEC 61508 Functional Safety of Electrical/Electronic/Programmable Electronic Safe­ty-related Systems

.

Role of Safety Products

Safety products incorporate standardized safety functions and mechanisms, but the
benefits of these functions and mechanisms are designed to attain their full potential
only within properly designed safety-related systems. Make sure you fully understand
all functions and mechanisms, and use that understanding to develop systems that will
ensure optimal usage.
Related International Standards:

• ISO 141
Selection

• ISO 13857 Safety Distances to Prevent Hazard Zones being Reached by Upper and
Lower Limbs

19 Interlocking Devices Associated with Guards - Principles for Design and

NX-series Safety Control Unit User's Manual (Z930)

19

Safety Precautions

Installing Safety Products

Qualified engineers must develop your safety-related system and install safety prod­ucts in devices and equipment. Prior to machine commissioning verify through testing
that the safety products works as expected.
Related International Standards:

• ISO 12100 General Principles for Design - Risk Assessment and Risk Reduction
IEC 60204-1 Electrical Equipment of Machines - Part 1: General Requirements

•

• ISO 13849-1, -2 Safety-related Parts of Control Systems

• ISO 14119 Interlocking Devices Associated with Guards - Principles for Design and
Selection

• IEC 62061 Functional Safety of Safety-related Electrical, Electronic and Programma­ble Electronic Control Systems

• IEC 61508 Functional Safety of Electrical/Electronic/Programmable Electronic Safe­ty-related Systems

Observing Laws and Regulations

Safety products must conform to pertinent laws, regulations, and standards. Make sure
that they are installed and used in accordance with the laws, regulations, and stand­ards of the country where the devices and equipment incorporating these products are
distributed.

Observing Usage Precautions

Carefully read the specifications and precautions as well as all items in the Instruction
Manual for your safety product to learn appropriate usage procedures. Any deviation
from instructions will lead to unexpected device or equipment failure not anticipated by
the safety-related system.

Transferring Devices and Equipment

When transferring devices and equipment, be sure to retain one copy of the Instruction
Manual and supply another copy with the device or equipment so the person receiving
it will have no problems with operation and maintenance.
Related International Standards:

• ISO 12100 General Principles for Design - Risk Assessment and Risk Reduction

•

IEC 60204-1 Electrical Equipment of Machines - Part 1: General Requirements

• ISO 13849-1, -2 Safety-related Parts of Control Systems

• IEC 62061 Functional Safety of Safety-related Electrical, Electronic and Programma­ble Electronic Control Systems

• IEC 61508 Functional Safety of Electrical/Electronic/Programmable Electronic Safe­ty-related Systems

20

Design

NX-series Safety Control Unit User's Manual (Z930)

Safety Precautions

Confirm that the calculated reaction times meet the required specifications for all safety
chains.
Serious injury may possibly occur due to loss of required safety functions.

All safety devices and components that are connected to an NX-series Safety Control
Unit must be selected and used to meet the required level of safety and the relevant
safety category.
Serious injury may possibly occur due to loss of required safety functions.

Do not use indicators on the NX-series Safety Control Units for safety operations.
Serious injury may possibly occur due to loss of required safety functions.

Check during the import of the program that the CRC of the program is correct.
Serious injury may possibly occur due to loss of required safety functions.

Check during the import of the user defined function that the CRC of the imported func­tion block is correct.
Serious injury may possibly occur due to loss of required safety functions.

Do not use non-safety signals, including tag data links, explicit messages, and ex­posed variables, as safety signals.
Serious injury may possibly occur due to loss of required safety functions.

If you select “Only Open” for the Open Type setting, make sure to verify that the origi­nator/target have correct configurations.
Serious injury may possibly occur due to loss of required safety functions.

Before connecting an NX Series Safety Control Unit to the network, clear the previous
settings.
Serious injury may possibly occur due to loss of required safety functions.

Debugging

Before you perform safety validation of the safety programs, complete debugging of
the safety programs.
Otherwise, the Safety CPU Unit will start with safety programs that are not fully debug­ged and may cause serious personal injury.

Make sure that the area around the system is safe before you change the operating
mode, change present values, or execute forced refreshing. The outputs may operate
and may cause serious injury.

Make sure that the area around the system is safe before you start the system opera­tion while the online functional test is in progress. The outputs may operate and may
cause serious injury.

Testing Operation

Before you start the system, perform user testing to make sure that all safety devices
operate correctly
Serious injury may possibly occur due to loss of required safety functions.

NX-series Safety Control Unit User's Manual (Z930)

. The safety signature is validated upon completion of the user testing.

21

Safety Precautions

After you perform safety validation, check items for safety validation printed out to con­firm Safety Control Units are correctly configured.

Although the Simulator and Simple Automatic Test simulate the operation of the Safety
CPU Unit, there are differences from the Safety CPU Unit in operation and timing. Al­ways confirm operation on the actual equipment before you operate the equipment.
Accidents may occur if the controlled system performs unexpected operation.

Wiring

Wire the safety input and output lines so that they do not touch other lines.
Serious injury may possibly occur due to loss of required safety functions.

Wire the Safety Control Unit properly so that 24-VDC lines do not touch output lines
accidentally or unintentionally.
Serious injury may possibly occur due to loss of required safety functions.

Wire the safety output lines and 24-VDC lines so that ground faults will not cause the
loads to turn ON.
Serious injury may possibly occur due to loss of required safety functions.

The wiring information that is displayed on the Sysmac Studio is for reference only and
may dif
forming suitable wiring.
Serious injury may possibly occur due to loss of required safety functions.

fer from the actual wiring diagrams. Always confirm the actual wiring and per-

During Power Supply

Do not touch any of the terminals or terminal blocks while the power is being supplied.
Doing so may result in electric shock.

Do not attempt to take any Unit apart.
In particular, high-voltage parts are present in Units that supply power while power is supplied or
immediately after power is turned OFF
There are sharp parts inside the Unit that may cause injury.

. Touching any of these parts may result in electric shock.

Replacing Units

When replacing a Safety Control Unit, confirm that the model of the Unit is correct,
confirm that the Unit and terminal block mounting positions are correct, configure the
replacement Unit suitably, and confirm that the Unit operates correctly

.

Voltage and Current Inputs

Make sure that the voltages and currents that are input to the Units and slaves are
within the specified ranges.
Inputting voltages or currents that are outside of the specified ranges may cause acci­dents or fire.

22

NX-series Safety Control Unit User's Manual (Z930)

Safety Precautions

Transferring

Always confirm safety at the destination before you transfer the unit configuration infor­mation, parameters, set values, or other data from tools such as the Sysmac Studio.
The devices or machines may perform unexpected operation regardless of the operat­ing mode of the Controller.

Restoring Data

When you restore the Safety CPU Unit, confirm that the safety signature for the re­stored programs is correct. Serious injury may possibly occur due to loss of required
safety functions.

NX-series Safety Control Unit User's Manual (Z930)

23

Example: NX Unit (12 mm width)

N

G NG

Precautions for Safe Use

Precautions for Safe Use

Transporting

• Do not attempt to disassemble, repair, or modify any Units. Doing so may result in malfunction or
fire.

• Do not drop any Unit or subject it to abnormal vibration or shock. Doing so may result in Unit mal­function or burning.

• When transporting any Unit, use the special packing box for it. Also, do not subject the Unit to ex­cessive vibration or shock during transportation.

Mounting

• Always turn OFF the power supply before mounting a Unit. If the power supply is not OFF, the Unit
may malfunction or may be damaged.

• Mount terminal blocks and connectors only after checking the mounting location carefully. Be sure
that the terminal blocks, expansion cables, and other items with locking devices are properly locked
into place.

• Do not apply labels or tape to the Unit. When the Units are installed or removed, adhesive or scraps
may adhere to the pins in the NX bus connector, which may result in malfunctions.

• Do not touch the pins in the NX bus connector on the Unit. Dirt may adhere to the pins in the NX bus
connector, which may result in malfunctions.

• Do not write on the an NX Unit with ink within the restricted region that is shown in the following
figure. Also do not get this area dirty. When the Unit is installed or removed, ink or dirt may adhere
to the pins in the NX bus connector, which may result in malfunctions in the Controller.
Refer to the user's manual of the CPU Unit or Communications Coupler Unit to be connected for
details on the restricted region of the CPU Unit or Communications Coupler Unit.

24

NX-series Safety Control Unit User's Manual (Z930)

Restricted region

(shaded portion)

Upper

Lower

NG OK

Precautions for Safe Use

• For the installation orientations in the following figure, support the cables, e.g., with a duct, so that
the End Plate on the bottom is not subjected to the weight of the cables. The weight of the cables
may cause the bottom End Plate to slide downward so that the Slave Terminal is no longer secured
to the DIN T

rack, which may result in malfunctions.

Wiring

• Follow the instructions in this manual to correctly perform wiring.

• Double-check all switch settings to make sure that they are correct before turning ON the power

.

supply

• Use the correct wiring parts and tools when you wire the system. Otherwise, cables may be discon­nected to cause short-circuit or wire breakage.

• Do not pull on the cables or bend the cables beyond their natural limit. Do not place any heavy ob­jects on the cables or other wiring lines. Doing so may severe the cables.

• When wiring or installing the Units, do not allow metal fragments to enter the Units.

• Do not press the flat-blade screwdriver straight into the release hole on the screwless clamping ter­minal block. Doing so may damage the terminal block.

NX-series Safety Control Unit User's Manual (Z930)

25

NG NG

Precautions for Safe Use

• When you insert a flat-blade screwdriver into a release hole on the screwless clamping terminal
block, press the screwdriver down with a force of 30 N or less. Applying excessive force may dam­age the terminal block.

• Do not tilt or twist the flat-blade screwdriver while it is pressed into the release hole on the screwless
clamping terminal block. Doing so may damage the terminal block.

Power Supply Design

• Use the I/O power supply capacity within the range that is given in the Unit specifications.

• Provide suitable power supply capacity according to the reference manuals.

•

Use the power supply voltage that is specified in the related manuals.

• Do not apply voltages that exceed the rated value to any Input Unit.

Debugging

• With forced refreshing, the values of variables are overwritten with specified values and then the
safety programs are executed. If forced refreshing is used for variables that give the results of pro­gram processing, the variables will first take the specified values, but they will then be overwritten by
the safety program.

• Depending on the dif

• After you clear the memory, the Controller operates in the same way as immediately after you create
the system configuration with the Controller in the factory default condition.

• Verify that the safety communications with a remote node will be established in the debug mode of
the Safety CPU Unit.

ference in the forced status, the control system may operate unexpectedly.

Turning ON the Power Supply or Restarting after Safety Validation

• Remember that if safety validation is successful, the next time the Safety CPU Unit is started, it will
automatically start in RUN mode.

• When you download the parameters for the NJ/NX-series CPU Units, the Communications Coupler
Unit and NX Units, the Safety CPU Unit automatically restarts.

Turning ON the Power Supply

• Double-check all wiring connections and switch settings to make sure that they are correct before
turning ON the power supply. Use the correct wiring parts and tools when you wire the system.

26

NX-series Safety Control Unit User's Manual (Z930)

Precautions for Safe Use

• Make sure that the voltages and currents that are input to the Units and slaves are within the speci­fied ranges. Inputting voltages or currents that are outside of the specified ranges may damage the
Units or slaves or cause fire.

Actual Operation

• The relevant Units will maintain the safe states for I/O data with safety connections after an error is
detected in safety process data communications. However, when the cause of the error is removed,
safety process data communications will recover automatically
If you need to prevent equipment from restarting when safety process data communications recover
automatically, implement suitable restart conditions in the user program.

.

Turning OFF the Power Supply

• Do not disconnect the cable or turn OFF the power supply to the Controller or a Slave Terminal
when downloading data or the user program from the Support Software.

• Always turn OFF the external power supply to the Units before attempting any of the following.
a)

Mounting or removing an NX Unit.
b) Assembling Units
c) Setting DIP switches or rotary switches
d) Connecting or wiring cables
e) Attaching or removing terminal blocks or connectors
The Power Supply Unit may continue to supply power to the Controller for a few seconds after the
power supply turns OFF. The UNIT PWR and I/O PWR indicators are lit during this time. Confirm
that the UNIT PWR and the I/O PWR indicators are not lit before you perform any of the above ac­tions.

General Communications

• Do not exceed the ranges that are given in the specifications for the communications distance and
number of connected Units.

• Refer to the user
safe use of communications with the connected CPU Unit or Communications Coupler Unit.

’s manual for the CPU Unit or Communications Coupler Unit for precautions for the

Standards

• The customer is responsible for attaining conformance of the entire system to standards.

Maintenance

• Test the functionality every six months to detect welded contactor contacts.
To detect electrical and mechanical failures, use a combination of redundant semiconductor output
contacts and redundant mechanical output devices.

NX-series Safety Control Unit User's Manual (Z930)

27

Precautions for Safe Use

Unit Replacement

• After you replace the Safety Control Unit, set the program and all configuration settings that are nec­essary to resume operation. Make sure that the safety functions operate normally before you start
actual operation.

• When you replace a Unit, start operation only after you transfer the settings and variables that are
required for operation to the new Unit.

Disposal

• Dispose of the product according to local ordinances as they apply.

28

NX-series Safety Control Unit User's Manual (Z930)

Precautions for Correct Use

Storage and Installation

• Follow the instructions in this manual to correctly perform installation and wiring.

• Do not operate or store the Units in the following locations. Doing so may result in burning, in opera­tion stopping, or in malfunction.
a) Locations subject to direct sunlight
b) Locations subject to temperatures or humidity outside the range specified in the specifications
c) Locations subject to condensation as the result of severe changes in temperature
d) Locations subject to corrosive or flammable gases
e) Locations subject to dust (especially iron dust) or salts
f) Locations subject to exposure to water, oil, or chemicals
g) Locations subject to shock or vibration
h) Locations subject to static electricity or other forms of noise

• Take appropriate and sufficient countermeasures when installing the Controller in the following loca­tions.
a) Locations subject to strong, high-frequency noise
b) Locations subject to static electricity or other forms of noise
c) Locations subject to strong electromagnetic fields
d) Locations subject to possible exposure to radioactivity
e) Locations close to power lines

• Before touching a Unit, be sure to first touch a grounded metallic object in order to discharge any
static build-up.

• Use the rated power supply voltage for the Units that supply power. Take appropriate measures to
ensure that the specified power with the rated voltage and frequency is supplied in places where the
power supply is unstable.

Precautions for Correct Use

Wiring

• Do not allow foreign matter to enter the openings in the Unit. Doing so may result in Unit burning,
electric shock, or failure.

Actual Operation

• Make sure that you are connected to the correct Safety CPU Unit before you perform any online op­erations with the Safety CPU Unit.

• Before you transfer safety application data to the Safety CPU Unit, check the safety signature and
make sure the data is the intended data.

• Always confirm the destination before you transfer configuration information and safety application
data from the Sysmac Studio.

• You cannot monitor or perform certain online operations with the same Safety CPU Unit from more
than one copy of the Sysmac Studio at the same time.

NX-series Safety Control Unit User's Manual (Z930)

29

Precautions for Correct Use

Turning OFF the Power Supply

• Do not turn OFF the power supply while data is being transferred.

General Communications

• Refer to the user’s manual for the CPU Unit or Communications Coupler Unit for precautions for the
correct use of communications with the connected CPU Unit or Communications Coupler Unit.

Debugging

• The task period affects the safety response performance. If the task period changes due to changes
in the configuration or programs, recalculate the safety reaction times.

• If you change the I/O for a variable to publish to a NJ/NX-series CPU Unit, the device variable as­signments to the NJ/NX-series CPU Unit will be canceled. In this case, you need to assign the de­vice variables, and then transfer the settings and programs to the NJ/NX-series CPU Unit. After you
transfer the settings and programs, check that the operation of the NJ/NX-series CPU Unit is cor­rect.

•

If you change the exposed variable in the EtherNet/IP Slave Terminal configuration, the I/O alloca­tions of the EtherNet/IP Couplers Unit will be changed. Check that the operation of the EtherNet/IP
Coupler Unit is correct.

• For security purposes, we recommend that you set a password for the Safety CPU Unit and the
project file. To avoid the leakage, keep the passwords under strict control. Especially, when you
transmit password data through the Internet, implement a measure to secure the transmission such
as by using the public key encryption.

• If you lose the password that is set to the Safety CPU Unit, you will no longer be able to make
changes to the Safety CPU Unit. Take caution not to lose the password. If you want to reset the con­figured password, contact your OMRON representative.

• For safety data logging, make sure to use the settings file generated from the same project file as
the logging target.

30

Periodic Inspections and Maintenance

• Do not disassemble, repair, or modify the Safety Control Unit. Doing so may lead to loss of safety
functions.

Disposal

• Be careful not to injure yourself when dismantling the Safety Control Unit.

NX-series Safety Control Unit User's Manual (Z930)

Regulations and Standards

The NX-series Safety Control Units are certified for the following standards.

Certification body Standards

• EN ISO 13849-1: 2015

• EN ISO 13849-2: 2012

• IEC 61508 parts 1-7: 2010

TÜV Rheinland

UL NRAQ (UL61010-1, and UL 61010-2-201)

*1. The FSoE protocol was certified for applications in which OMRON FSoE devices are connected to each oth-

er.
For compatibility with FSoE devices other than OMRON FSoE devices, the customer must validate FSoE
communications.

*1

• IEC/EN 62061:2005+A1: 2013+A2:2015

• IEC/EN 61

• IEC/EN 60204-1: 2016

NRAG (ANSI/ISA 12.12.01)
NRAQ7 (CSA C22.2 No. 61010-1, and CSA C22.2 No. 61010-2-201)
FSPC (IEC 61508 and EN ISO 13849)

131-2: 2007

Regulations and Standards

• IEC 61326-3-1: 2017

• IEC 61131-6: 2012

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.

Conformance to EU Directives

Applicable Directives

• EMC Directives

• Low Voltage Directive

Concepts

EMC Directives

l

OMRON devices that comply with EU Directives also conform to the related EMC standards so that
they can be more easily built into other devices or the overall machine. The actual products have
been checked for conformity to EMC standards.*1
Whether the products conform to the standards in the system used by the customer, however, must
be checked by the customer. EMC-related performance of the OMRON devices that comply with
EU Directives will vary depending on the configuration, wiring, and other conditions of the equip­ment or control panel on which the OMRON devices are installed. The customer must, therefore,
perform the final check to confirm that devices and the overall machine conform to EMC standards.

NX-series Safety Control Unit User's Manual (Z930)

31

Regulations and Standards

*1. Applicable EMC (Electromagnetic Compatibility) standards are as follows: EMS (Electromagnetic Suscept-

ibility): EN 61131-2 EMI (Electromagnetic Interference): EN 61
tions).

Machinery Directive

l

The Machinery Directive requires ensuring the required safety for safety components used for ma­chinery safety.
The applicable directives are EN ISO 13849-1:2008 and EN 62061 SIL CL3.

Conformance to EU Directives

l

131-2 (Radiated emission: 10-m regula-

The NX-series Units comply with EU Directives. T
NX-series Units are used complies with EU Directives, the following precautions must be observed.

• The NX-series Units must be installed within a metallic control cabinet.

• You must meet the following conditions for the DC power supplies that are connected as the Unit
power supplies and I/O power supplies for the NX-series Units.
a) Use reinforced insulation or double insulation.
b) Ensure an output hold time of 20 ms min.
c) Use an SELV power supply that meets the requirements of IEC/EN 60950-1 and EN 50178.

Do not allow the power supply cable length to exceed 3 m.
We recommend that you use the OMRON S8VK-S-series Power Supplies. EMC standard com­pliance was confirmed for the recommended Power Supplies.

• NX-series Units that comply with EU Directives also conform to the Common Emission Standard.
Radiated emission characteristics (10-m regulations) may vary depending on the configuration of
the control panel used, other devices connected to the control panel, wiring, and other condi­tions.
You must therefore confirm that the overall machine or equipment in which the NX-series Units
are used complies with EU Directives.

• This is a Class A product (for industrial environments). In a residential environment, it may cause
radio interference. If radio interference occurs, the user may be required to take appropriate
measures.

o ensure that the machine or device in which the

Conformance to EN ISO 13849-1 and EN 62061

EN ISO 13849-1 and EN 62061 require functional safety management to avoid systematic failure dur­ing the software development. This is required in all phases of the life cycle of software programming
and software design (e.g., basic software design, safety circuit system design, and software upgrades)
in safety control systems to be developed using safety controllers.
Therefore, functional safety management is required for design and development of software for facili­ties and equipment that use the function blocks provided in the Safety Controller
The customer must implement measures to ensure compliance with these standards.

Y

ou can download the reliability data for safety of machinery that is required to verify the safety per­formance of your equipment from the following URL: http://www.ia.omron.com/support/sistemalibrary/
index.html.

32

.

NX-series Safety Control Unit User's Manual (Z930)

Conformance to UL and CSA Standards

The NX-series Safety Control Units comply with the following UL and CSA standards. The application
conditions for standard compliance are defined. Refer to the Instruction Sheet that is provided with
each Unit before application.

Conformance to Shipbuilding Standards

Some NX-series products comply with shipbuilding standards. If you use an NX-series product that
complies with shipbuilding standards and the machinery or system in which you use the NX-series
product must also comply with the standards, consult with your OMRON representative. Application
conditions are defined according to the installation location. Application may not be possible for some
installation locations.

Usage Conditions for NK and LR Shipbuilding Standards

Regulations and Standards

Usage Conditions for Locations Other Than the Bridge or Decks

l

• A Safety Control Unit must be installed within a control panel.

• Gaps in the door to the control panel must be completely filled or covered with gaskets or other
material.

Usage Conditions for the Bridge (Certified only by Nippon Kaiji Kyokai

l

(Class NK))

•

A Safety Control Unit must be installed within a control panel.

• Gaps in the door to the control panel must be completely filled or covered with gaskets or other
material.

• The following noise filter must be connected to the power supply line.

Noise Filter

Name Manufacturer Model

Noise filter Cosel Co., Ltd. TAH-06-683

Conformance to KC Certification

Observe the following precaution if you use NX-series Units in Korea.

Class A Device (Broadcasting Communications Device for Office Use)
This device obtained EMC registration for office use (Class A), and it is intended to be used in places
other than homes.
Sellers and/or users need to take note of this.

NX-series Safety Control Unit User's Manual (Z930)

33

Regulations and Standards

Usage Conditions for KC Certification

Take the same measures as those described in Conformance to EU Directives on page 31. In addi­tion, attach a clamp core to the port side of the EtherNet/IP cable.
The recommended clamp core is given below

Recommended Clamp Core

Manufacturer Product Model Turns of cable

NEC TOKIN Clamp core ESD-SR-250 1 turn

.

34

NX-series Safety Control Unit User's Manual (Z930)

Unit Versions

Notched

area

Unit

specifications

LOT No.

Lot number and unit version Unit model number

Unit versionLot number

This section describes the notation that is used for unit versions, the confirmation method for unit ver­sions, and the relationship between unit versions and Sysmac Studio versions.

Unit Versions

A “unit version” refers to a revision number of the respective NX-series Units. A “unit version” has
been introduced to manage the Units in the NX Series according to differences in functionality accom­panying Unit upgrades.

Notation of Unit Versions on Products

The unit version is given with the Unit specifications on the side of the Unit or in the notched area.

Unit Versions

NX-series Safety Control Unit User's Manual (Z930)

35

Unit Versions

The following information is provided in the Unit specifications on the Unit.

Unit model number Gives the model of the Unit.
Unit version Gives the unit version of the Unit.
Lot number Gives the lot number of the Unit.

The following information is provided in the notched area on the Unit.

Lot number and unit ver­sion

Name Function

,

DDMYY£: Lot number
“M” gives the month (1 to 9: January to September, X: October, Y: November, Z:
December)

Name Function

Gives the lot number and unit version of the Unit.

• DDMYY£: Lot number,

“M” gives the month (1 to 9: January to September, X: October, Y: November,
Z: December)

£: Used by OMRON.

£: Used by OMRON.

• 1£: Unit version

The decimal portion of the unit version is omitted. (It is provided in the Unit
specifications.)

Confirming Unit Versions with the Support Software

If your NX Unit is connected to a CPU Unit, refer to the user’s manual of the connected CPU Unit for
the confirmation method for the unit version of the NX Unit.
If your NX Unit is connected to a Communications Coupler Unit, refer to the user’s manual of the con­nected Communications Coupler Unit for the confirmation method for the unit version of the Communi­cations Coupler Unit and NX Unit.

Unit Versions of Units and Sysmac Studio Versions

The functions that are supported depend on the unit version of the Unit. The version of Sysmac Studio
that supports the functions that were added for an upgrade is also required to use those functions.
Refer to A-17 Version Information on page A - 105 for the relationship between the unit versions of the
Units and the Sysmac Studio versions, and for the functions that are supported by each unit version.

36

NX-series Safety Control Unit User's Manual (Z930)

Related Manuals

The followings are the manuals related. Use these manuals for reference.

Manual name Cat. No. Model numbers Application Description

NX-series
Safety Control Unit
User's Manual

NX-series
Safety Control Unit
Instructions Reference Man­ual

NX-series
Data Reference Manual

Sysmac Studio Version 1
Operation Manual

NJ/NX-series

roubleshooting Manual

T

NX-series

EtherCAT® Coupler Unit

’s Manual

User

NX-series

EtherNet/IP
Coupler Unit
User’

NX-series
System Units
User’

NX-series
NX102 CPU Unit
Hardware
User

™

s Manual

s Manual

’s Manual

Z930

Z931

W525

W504 SYSMAC

W503

W519

W536

W523

W593

NX-SL££££
NX-SI££££
NX-SO££££

NX-SL££££

NX-££££££

-SE2£££

NX701-££££
NX102-££££
NX1P2-££££
NJ501-££££
NJ301-££££
NJ101-££££

NX-ECC£££

NX-EIC£££

NX-PD1£££
NX-PF0£££
NX-PC0£££
NX-TB£££X

NX102-££££

Learning how to use
NX-series Safety
Control Units.

Learning about the
specifications of in­structions for the
Safety CPU Unit.

Referencing lists of
the data that is re­quired to configure
systems with NX-ser­ies Units.

Learning about the
operating procedures
and functions of the
Sysmac Studio.

Learning about the
errors that may be
detected in an
NJ/NX-series Con-

.

troller

Learning how to use
the NX-series Ether­CAT Coupler Unit
and EtherCAT Slave
Terminals.

Learning how to use
an NX-series Ether­Net/IP Coupler Unit
and EtherNet/IP
Slave Terminals.

Learning how to use
NX-series System
Units

Learning the basic
specifications of the
NX102 CPU Units,
including introductory
information, design­ing, installation, and
maintenance.
Mainly hardware in­formation is provided.

Related Manuals

Describes the hardware, setup methods,
and functions of the NX-series Safety Con­trol Units.

Describes the instructions for the Safety
CPU Unit.

Lists of the power consumptions, weights,
and other NX Unit data that is required to
configure systems with NX-series Units are
provided.

Describes the operating procedures of the
Sysmac Studio.

Concepts on managing errors that may be
detected in an NJ/NX-series Controller and
information on individual errors are descri­bed.

The following items are described: the
overall system and configuration methods
of an EtherCAT Slave Terminal (which con­sists of an NX-series EtherCAT Coupler
Unit and NX Units), and information on
hardware, setup, and functions to set up,
control, and monitor NX Units through
EtherCAT.

The following items are described: the
overall system and configuration methods
of an EtherNet/IP Slave Terminal (which
consists of an NX-series EtherNet/IP Cou­pler Unit and NX Units), and information on
hardware, setup, and functions to set up,
control, and monitor NX Units.

The hardware and functions of the NX-ser­ies System Units are described.

An introduction to the entire NX102 system
is provided along with the following infor­mation on the CPU Unit.

• Features and system configuration

• Introduction

• Part names and functions

• General specifications

• Installation and wiring

• Maintenance and Inspection

NX-series Safety Control Unit User's Manual (Z930)

37

Related Manuals

Manual name Cat. No. Model numbers Application Description

NJ/NX-series
CPU Unit

s Manual

’

Communi-

Port

Built-in EtherNet/IP™
User

’s Manual

NJ/NX-series CPU Unit
Software User

NJ/NX-series Instructions
Reference Manual

AC Servomotors/Servo
Drives
G5 Series with

Built-in EtherCAT®
cations User's Manual

Multi-function Compact Inver­ter
MX2-series V1

’

s Manual

User
AC Servomotors/Servo

Drives
1S-series with

Built-in EtherCAT® Communi­cations User's Manual

W506

W501

W502

I576

I577

I585

I586

NX701-££££
NX102-££££
NX1P2-££££
NJ501-££££
NJ301-££££
NJ101-££££

NX701-££££
NX102-££££
NX1P2-££££
NJ501-££££
NJ301-££££
NJ101-££££

NX701-££££
NX102-££££
NX1P2-££££
NJ501-££££
NJ301-££££
NJ101-££££

R88M-K£
R88D-KN£-ECT

R88L-EC-£
R88D-KN£-ECT-L

3G3MX2-A££££­V1

R88M-1£
R88D-1SN£

-ECT

Using the built-in
EtherNet/IP port on
an NJ/NX-series
CPU Unit.

Learning how to pro­gram and set up an
NJ/NX-series CPU
Unit.
Mainly software infor­mation is provided.

Learning detailed
specifications on the
basic instructions of
an NJ/NX-series
CPU Unit.

Learning how to use
the AC Servomotors/
Servo Drives with
built-in EtherCAT
Communications.

Learning how to use
the MX2-series Multi­function Compact In­verter.

Learning how to use
the Servomotors/
Servo Drives with
built-in EtherCAT
Communications.

Information on the built-in EtherNet/IP port
is provided.
Information is provided on the basic setup,
tag data links, and other features.

The following information is provided on a
Controller built with an NJ/NX-series CPU
Unit.

• CPU Unit operation

• CPU Unit features

• Initial settings

• Programming based on IEC 61131-3

language specifications

The instructions in the instruction set (IEC

131-3 specifications) are described.

61

Describes the hardware, setup methods
and functions of the AC Servomotors/
Servo Drives with built-in EtherCAT Com­munications.
The linear motor type model and the model
dedicated for position controls are availa­ble in G5-series.

Describes the hardware, setup methods,
and functions of the MX2-series Multi-func­tion Compact Inverter.

Describes the hardware, setup methods
and functions of the Servomotors/Servo
Drives with built-in EtherCAT Communica­tions.

38

NX-series Safety Control Unit User's Manual (Z930)

Terminology

Terminology

Term Description

standard The generic term for devices, functions, and data that are used for general control purposes

as opposed to those that are used for safety measures.

safety function A function that is executed by the safety control system to achieve a safe state for a machine

hazard.

safe state The status of a device or piece of equipment when the risk of danger to humans has been

reduced to an acceptable level.

safety signal A signal that is used for safety controls.

In this safety control system, the data type of a variable determines whether a signal is relat­ed to the safety controls. Broadly speaking, there are two data types: safety data types and

standard data types.
standard signal A signal or data that is used for general control purposes.
Safety data type The data type for a safety signal.
Standard data type The data type for a standard signal.
safety reaction time The time required for the system to enter a safe state in a worst-case scenario after the oc-

currence of a safety-related input (press of an emergency stop pushbutton switch, interrup-

tion of a light curtain, opening of a safety door

The reaction time of the system includes the reaction times of sensors and actuators, just

like the reaction time for a Controller or network.
safety control A type of control that uses devices, functions, and data that are designed with special safety

measures.
standard control A type of control that use devices, functions, and data that are designed for general control

purposes. This term is used to differentiate from a safety control
safety process data communications
standard process data communications A type of I/O data communications that is used for standard control purposes.
Safety I/O connection A type of connections that is used for safety process data communications.
CIP Safety connection Safety I/O connection that is used to transmit safety process data by the communication pro-

CIP Safety originator connection A CIP Safety connection when an own node is a CIP Safety originator.
CIP Safety target connection A CIP Safety connection when an own node is a CIP Safety target.
CIP Safety originator A role in CIP Safety communications. A CIP Safety originator manages a CIP Safety connec-

CIP Safety target A role in CIP Safety communications. A CIP Safety target receives a request to open a CIP

single-cast connection A safety process data communications method in CIP Safety

multi-cast connection A safety process data communications method in CIP Safety

FSoE master connection Master safety I/O connection that is used to transmit safety process data by the communica-

safety master connection The generic term for the CIP Safety originator connection and the FSoE master connection.
exposing global variables to the NJ/NX-

series CPU Unit
Safety Control Unit The generic term for a Unit that is used in safety controls.
Safety CPU Unit A CPU Unit that is used for safety controls. This is a type of NX Unit.
Safety I/O Unit An I/O Unit that is used for safety controls. This is a type of NX Unit.

A type of I/O data communications that is used for safety control purposes.

tocol called CIP Safety

are available depending on the roles of communications.

tion for a CIP Safety target. CIP Safety originator exists in a connection unit, and not in a

device unit.

Safety connection from a CIP Safety originator

and not in a device unit.

CIP Safety target communicate one-to-one in this connection.

You can apply this setting for both of input data and output data.

input data of the CIP Safety target in multi-cast to multiple CIP Safety originators in this con-

nection.

This is a connection type you can set only for input data of a CIP Safety target. You cannot

apply this setting for output data.

tion protocol called FSoE.

Exposing specified global variables to the NJ/NX-series CPU Unit to allow the exchange of

standard signals between the NJ/NX-series CPU Unit and the Safety CPU Unit.

. CIP Safety originator connection and CIP Safety target connection

, etc.) or device failure.

. CIP Safety target exists in a connection unit,

. A CIP Safety originator and a

. A CIP Safety target sends the

NX-series Safety Control Unit User's Manual (Z930)

39

Terminology

Term Description

safety input device An input device that is designed with special safety measures for use in safety controls.

The generic term for safety input devices, such as emergency stop pushbutton switches and
safety switches.

safety output device An output device that is designed with special safety measures for use in safety controls.

The generic term for safety output devices, such as safety relays.

EtherNet/IP Slave Terminal An EtherNet/IP Slave Unit Terminal is a building-block slave that is created by mounting a

group of NX Units.

Safety program User programming for safety controls in the Safety CPU Unit.

This term is used to dif
CPU Unit.
Safety programs are programmed in the FBD language.

FBD language The abbreviation for the function block diagram programming language. This is a graphical

language used to program algorithms with connecting lines that represent the flow of inputs
and data, and rectangular boxes that represent functions or function blocks.
Unlike the ladder diagram language, the FBD language does not have bus bars, and the
connecting lines represent the flow of inputs and data rather than the power flow.
Algorithms are executed in order from top to bottom in units that are called networks. A net­work consists of configuration elements that use connecting lines to connect inputs to out­puts. The FBD language does not have an END instruction. Execution for the task period
ends when the last network is executed.

ou use the FBD language to write safety programs for the Safety CPU Unit.

Y

user program All of the programs that are created by the user. It refers to the programs for standard con-

trols of the NJ/NX-series CPU Units and the safety program of the Safety CPU Units.

operating mode The status of the Safety CPU Unit, when it is in normal operation, that the user changes to

run or check the operation of the Safety CPU Unit.
There are the three modes: PROGRAM mode, DEBUG mode, and RUN mode.
You can use DEBUG mode only when the Sysmac Studio is online with the Safety CPU Unit.

safety validation The process of appending confirmation information to the safety application data if safety val-

idation testing demonstrates that the safety controls meet the required specifications of a
safety system.
You execute the safety validation from the Sysmac Studio when the Safety CPU Unit is in
DEBUG mode. The validated safety programs are automatically transferred to the non-vola­tile memory of the Safety CPU Unit.

DEBUG mode The mode that is used to debug unvalidated safety programs. DEBUG mode is only available

when the Sysmac Studio is online with the Safety CPU Unit.
Use this mode to check that the safety programs and external devices operate correctly. Af­ter you confirm that the system meets the required specifications, perform the safety valida­tion. This will enable you to change to RUN mode.
When you change from PROGRAM mode to DEBUG mode, the unvalidated safety programs
are automatically transferred to the main memory of the Safety CPU Unit.

DEBUG mode (RUN) A status that indicates that an unvalidated safety program is in execution in DEBUG mode.

You can control BOOL variables, use forced refreshing, and change present values.

DEBUG mode (ST

PROGRAM mode A mode indicates that execution of the safety program is stopped. You cannot control BOOL

RUN mode A mode that indicates that execution of the validated safety programs is in progress. Unlike

before safety validation A status that indicates that safety validation has not been performed on the safety applica-

after safety validation A status indicates that safety validation has been performed on the safety application data

OPPED) A status that indicates that an unvalidated safety program is stopped in DEBUG mode. You

can control BOOL variables, use forced refreshing, and change present values.

variables, use forced refreshing, or change present values.

DEBUG mode (RUN), the validated safety programs in the non-volatile memory of the Safety
CPU Unit are executed. Y
change present values.

tion data from the Sysmac Studio because it has not yet been determined whether the safety
controls meet the required specifications of the safety system.

from the Sysmac Studio because it has been determined that the safety controls meet the
required specifications of the safety system.

ferentiate safety programs from user programs in the NJ/NX-series

ou cannot control BOOL variables, use forced refreshing, or

40

NX-series Safety Control Unit User's Manual (Z930)

Terminology

Term Description

CPU Rack A Rack to which a CPU Unit or Communication Control Unit is mounted. For NX-series CPU

Units to which NX Units can be connected, a CPU Rack has a CPU Unit with NX Units and

an End Cover mounted to it. For NX-series Communication Control Units, a CPU Rack has a

Communication Control Unit with NX Units and an End Cover mounted to it.
CPU Rack settings Consists of the following items.

• Configuration information

• Unit operation settings

• Unit application data

Slave Terminal settings Consists of the following items.

• Configuration information

• Unit operation settings

• Unit application data

configuration information It consists of the following data:

• Unit configuration information

• I/O allocation information

I/O allocation information The set of information that specifies the I/O data to be processed by I/O refreshing.

On the Sysmac Studio, this is shown as configuration information and includes the Unit con-

figuration information.
Unit configuration information The set of information that specifies the configuration of the NX Units that are connected to

the NX bus master.

On the Sysmac Studio, this is shown as configuration information and includes the I/O allo-

cation information.
safety application data The data that contains the settings that are used to operate the NX-series Safety Control

Units.

It consists of the safety programs, safety task, and variables. You use the Sysmac Studio to

create this data, and then transfer and execute it on the Safety CPU Unit.

On the Sysmac Studio, this data is shown as the slave parameters.

The location where the safety application data is stored on the Safety CPU Unit depends on

whether the safety programs have been validated. (Unvalidated safety programs are stored

in the main memory
safety input function A function that evaluates whether the signals that are input on a safety input terminal are

normal or abnormal.

Specific safety evaluation functions include test pulse evaluation and dual channel evalua-

tion.

When the evaluation result shows an abnormality, the safety input data is made inactive

(OFF).
safety output function A function that evaluates whether the values of safety output data and the output signals on

safety output terminals are normal or abnormal.

Specific safety evaluation functions include test pulse evaluation and dual channel evalua-

tion.

When the evaluation result shows an abnormality, the output signal on the safety output ter-

minal is turned OFF
dual channel evaluation This function uses a pair of safety input or safety output terminals as redundant terminals

that are checked for consistency to evaluate the status of the safety input or safety output.
single channel The input or output is used as a single point.
dual channels Two inputs or outputs are used as a pair of points for redundancy.
test pulse evaluation This function outputs a test pulse that is used to evaluate a safety input or safety output for

failures or wiring errors with the connected external device.
change tracking A pin is used to manage whether the safety application data has been changed after the fi-

nalized data is created.

, while validated safety programs are stored in the non-volatile memory.)

.

NX-series Safety Control Unit User's Manual (Z930)

41

Cat. No.

Z930-E1-13

Revision code

Revision History

Revision History

A manual revision code appears as a suffix to the catalog number on the front and back covers of the
manual.

Revision

code

01 June 2013 Original production
02 September

03 December 2013

04 August 2014

05 January 2015
06 April 2015

07 July 2015

08 April 2016

09 July 2016

Date Revised content

• Added NX-SL3500.

2013

• Added information on offline debugging.

• Added information on 10-A Terminal Blocks.

• Corrected mistakes.

• Added procedures to upload data.

• Corrected mistakes.

• Made changes accompanying the upgrade to NX-SL££££ unit version 1.1.

• Made changes accompanying the upgrade to NX-SIH400 unit version 1.1.

• Made revisions accompanying connection to EtherNet/IP Coupler Units.

• Corrected mistakes.

• Made revisions accompanying the upgrade to Sysmac Studio version 1.12.

• Made revisions accompanying the upgrade to Sysmac Studio version 1.13.

• Corrected mistakes.

• 4-1-2 Calculating the Safety Reaction Time

Corrected numeric values for OMRON Special Safety Input Devices that are
used when calculating safety sensor/switch response time.

• 4-1-2 Calculating the Safety Reaction T

Corrected the calculation method for safety input refresh time and safety out­put refresh time for safety I/O refresh time.

• 4-1-2 Calculating the Safety Reaction Time

Added precaution for conformance to ISO 13856-1:2013.

• Made revisions accompanying the upgrade to Sysmac Studio version 1.15.

• 3-3-1 Safety Input Function

Changed connection wiring diagrams.

• A-3 Application Examples

Changed wiring examples.

• Added precautions for correct use.

• Corrected mistakes.

• Made revisions accompanying the upgrade to Sysmac Studio version 1.16.

• Corrected mistakes.

ime

42

NX-series Safety Control Unit User's Manual (Z930)

Revision History

Revision

code

10 October 2016

Date Revised content

• Made revisions accompanying the upgrade to Sysmac Studio version 1.17.

• 6-9-2 Exporting/Importing Data for the Entire NX Unit

• 7-5-2 Registering POUs

Added program import/export functions.

• 8-5 Checking External Device Wiring

• 8-7-2 Data Protection

Added the program data protection function.

• Corrected mistakes.

11 April 2018

• Made revisions accompanying connection to NX-series CPU Units.

• Made revisions associated with the addition of UM Safety Mats.

• Corrected mistakes.

12 July 2018

• Added NX-SL5700 and NX-SL5500

• Corrected mistakes.

13 August 2018 Added PFH values.

NX-series Safety Control Unit User's Manual (Z930)

43

Revision History

44

NX-series Safety Control Unit User's Manual (Z930)

Overview

This section introduces and describes the features, system configuration, and applica­tion procedure of the NX-series Safety Control Unit

1-1 Introduction and Features........................................................................... 1 - 2

1-2 System Configuration and Configuration Devices ...................................1 - 8

1-3 Support Software .......................................................................................1 - 12

1-4 Commissioning Procedures ..................................................................... 1 - 15

1

s.

1-1-1 Overview of Safety Control Unit.................................................................... 1 - 2

1-1-2 Features of Safety Control Unit .................................................................... 1 - 5

1-2-1 Safety Control System Configuration on NX bus of CPU Unit or

EtherCAT Network......................................................................................... 1 - 8

1-2-2 Safety Control System Configuration on EtherNet/IP Network................... 1 - 10

1-2-3 Standalone Safety Control System Configuration ...................................... 1 - 10

1-2-4 Types of Safety Control Unit........................................................................1 - 11

1-3-1 Applicable Support Software ...................................................................... 1 - 12

1-3-2 Connection Method and Procedures for EtherCAT Coupler Units.............. 1 - 12

1-3-3 Connection Method and Procedures for EtherNet/IP Coupler Units........... 1 - 14

1-4-1 Overall Procedure....................................................................................... 1 - 15

1-4-2 Detailed Procedures ................................................................................... 1 - 16

1

NX-series Safety Control Unit User's Manual (Z930)

1 - 1

1 Overview

1-1

1-1-1

Introduction and Features

Overview of Safety Control Unit

The NX-series Safety Control Units are part of the lineup of Sysmac devices. They are used to exe­cute safety controls. Safety Control Units are classified as NX Units and they are used connected to
an NX-seriess, EtherCAT Coupler Unit or EtherNet/IP Coupler Unit.
You use the integrated development environment that is provided by the Sysmac Studio Automation
Software to build the safety control system, and perform all settings, programming, and debugging of
the Safety Control Unit.

Safety Control System on CPU Rack or EtherCAT Network

The NX-series Safety Control Units can be connected to the following units.

• NX-series CPU Unit

•

NX-series EtherCAT Coupler Unit
When using both the CPU Unit and EtherCAT Coupler Unit, you can integrate the installation, wiring,
and setting methods of the NX Unit, which will enable design costs to be reduced.
These Units achieve safety controls on an CPU Rack or EtherCAT network when they are used in a
sequence and motion control system that is based on the NJ/NX-series Machine Automation Control­ler.

*1. Only one Safety CPU Unit can be used in this system.
*2. Refer to the user's manual of the CPU Unit to be used for details on whether the Safety Control Unit can be

connected to the CPU Unit to be used.

*2

*1

The Safety Control Unit connected to a CPU Unit performs I/O communications with the CPU Unit.
The Safety Control Unit
with the EtherCAT master through the EtherCAT Coupler Unit. Both methods support the FSoE (Safe­ty over EtherCAT) protocol through each communication and perform safety I/O communications be­tween the FSoE master and slaves through the CPU Unit that has a built-in EtherCAT master. This
allows you to use safety process data communications and standard process data communications on
the same EtherCAT network through the NX bus of the CPU Unit that has a built-in EtherCAT master.

Additional Information

• NX102 CPU Units support connection of NX-SL££££ Units, NX-SI££££ Units, and NX­SO££££ Units.

• NX-series
Units, and NX-SO££££ Units. It does not support connection to NX-SL5£££ Units.

connected to an EtherCAT Coupler Unit performs remote I/O communications

EtherCAT Coupler Units support connection of NX-SL3£££ Units, NX-SI££££

1 - 2

NX-series Safety Control Unit User's Manual (Z930)

NJ/NX-series

Sysmac Studio

EtherCAT slaves, such as servos, vision systems, and I/O

Et

herCAT master

EtherCAT slaves

Setting, programming, and
debugging the Safety Control Units

Safety Control Units

EtherCAT Coupler Unit

EtherCAT Coupler Unit

EtherCAT

1 Overview

1-1 Introduction and Features

1

1-1-1 Overview of Safety Control Unit

When you set up the Safety System configuration on the Sysmac Studio, you automatically achieve
safety process data communications (Safety over EtherCAT) on any EtherCA

T network that was in-

stalled for standard process data communications.

Safety Control System on EtherNet/IP Network

You can build a safety control system which performs CIP Safety on EtherNet/IP communications with
other controllers on the same EtherNet/IP network when you connect an NX-series

with an NX-series CPU Unit*1.

*1. Refer to A-17 Version Information on page A - 105 for the model numbers and unit versions of the applicable

NX-series CPU Units.

In addition, you can build a safety control system which performs CIP Safety on EtherNet/IP communi­cations in a system that does not use an
SL5£££ Unit with an NX-series NX-CSG320 Communication Control Unit. For details on systems
that use NX-series Communication Control Units, refer to the NX-series Safety Control Unit /

NX-series CPU Unit when you connect an NX-series NX-

Communication Control Unit User's Manual (Cat. No. Z395).

NX-SL5£££ Unit

NX-series Safety Control Unit User's Manual (Z930)

1 - 3

NX-series
CPU Unit

*1

Safety
CPU Unit
NX-SL5£££

EtherCAT

EtherCAT slaves, such as
servos, vision systems, and
I/O, NX-series Safety I/O
Units

EtherCAT slaves, such as
servos, vision systems, and
I/O, NX-series Safety I/O
Units

Standard
Controller

Sysmac
Studio

EtherNet/IP

NX-series
CPU Unit

*1

Safety
CPU Unit
NX-SL5£££

EtherCAT

Safety control

between

automation

system

Safety control within

automation system

Safety control within
automation system

1 Overview

*1. Refer to A-17 Version Information on page

A - 105 for the model numbers and unit versions of the applicable

NX-series CPU Units.

This system enables the safety controls between respective automation systems upon building up
each automation system that has the safety control built around EtherCAT which feature high speed
and high precision.

Additional Information

CIP Safety on EtherNet/IP communications are only available for the combination where an NX­SL5£££ Unit is connected to an NX-series

CPU Unit or to a Communication Control Unit. It

cannot be used with NX-SL3£££ Units.

Standalone Safety Control System

The NX-SL3300 Unit is used connected to an EtherNet/IP Coupler Unit to achieve safety controls in a
Slave Terminal.

The Safety Control Unit
EtherNet/IP Coupler Unit.

performs remote I/O communications with a standard controller through an

1 - 4

NX-series Safety Control Unit User's Manual (Z930)

Sysmac Studio

Setting, programming,
an

d debugging the Safety Control Units

Safety Control Unit

EtherNet/IP

E

t

herNet/IP Coupler Unit

Slave Terminal

1 Overview

Additional Information

• Standalone safety control system does not support CIP Safety on EtherNet/IP communica­tions.

• The EtherNet/IP Coupler Units support connection of NX-SL3300 Units, NX-SI££££ Units
and NX-SO££££ Units. It does not support connection to NX-SL5£££ Units and NX­SL3500 Units.

1-1 Introduction and Features

1

1-1-2 Features of Safety Control Unit

1-1-2

Features of Safety Control Unit

Achieving Safety Control System on CPU Rack or EtherCAT Net­work

Integrating Safety Controls in a Sequence and Motion Control System

l

You can use NX-series Safety Control Units to integrate a safety control system into a sequence
and motion control system.
The safety I/O communications support the FSoE protocol and can be built in as a subsystem on
the NX Bus of CPU Unit or EtherCA
cables or interface devices are required for safety communications.

Easy Creation of an Interface with the Standard Controls

l

ou can exchange data between the safety controls that are based on the Safety CPU Unit and the

Y
standard controls that are based on the NJ/NX-series CPU Unit.
This allows you to maintain the independent nature of the previously separate safety controls and
standard controls while easily interfacing monitoring and commands between them.

T network. Therefore, no special safety control communications

NX-series Safety Control Unit User's Manual (Z930)

Achieving Safety Control System on EtherNet/IP Network

CIP Safety on EtherNet/IP Is Supported

l

You can combine an NX-series NX-SL5£££ Unit with an NX-series
ty-based communications between devices that support CIP Safety on EtherNet/IP or other Safety
CPU Units.

CPU Unit to enable CIP Safe-

1 - 5

1 Overview

Achieving Standalone Safety Control System on EtherNet/IP Slave
T

l

l

Excellent Connectability with OMRON Safety I/O Devices

You can directly connect OMRON’s wide lineup of Safety I/O Devices to Safety I/O Units without using
any special units.

erminal

Constructing a Small Safety Control System

You can configure a small standalone safety control system on the EtherNet/IP Slave Terminal by
using an NX-series Safety Control Unit

Easy Creation of an Interface with the Standard I/O Data

You can easily exchange data between Safety CPU Unit and standard I/O Units.

.

Integrating Setting and Debugging Operations for Safety Controls
into the Sysmac Studio

Setting and debugging operations for safety controls are integrated into the Sysmac Studio Automa­tion Software.
The shared concepts, such as IEC 61131-3, consistent operating procedures, one-project manage­ment, integrated debugging, and integrated troubleshooting, reduce the software workload.

Support for the IEC 61131-3 Programming Environment

Program Languages Based on the IEC 61131-3 International Standard

l

Programming is possible with the FBD language, which is part of the programming language speci­fications of IEC 61131-3. And the safety function blocks that are defined in PLCopen® TC5 Safety
are also supported.

Programming with V

l

Programming with variables eliminates the need to specify memory addresses so that you can cre­ate user programs that are not dependent on any hardware considerations, such as the model of
the Controller or the system configuration. This allows you to reuse user programming, even for dif­ferent Controller models or system configurations.

ariables

1 - 6

Complete Advanced Validation

NX-series Safety Control Unit User's Manual (Z930)

1 Overview

Checking Safety Programs and Safety Parameters

l

You can verify beforehand whether your safety programs (user program for safety controls that
runs on the Safety CPU Unit) and safety parameters (parameters that are used for safety controls)
meet the validity and safety aspects that are outlined below.

•

Validity and safety issues related to function block diagram programs, such as missing or incor­rect connection for function blocks

• Safety issues, such as the incorrect connection of a standard input to a safety input parameter of
a function block

• Validity of the safety task period

These checks help to prevent design regression and help to ensure the reliability of the safety de­signs.

Debugging function

l

You can connect the Sysmac Studio to perform various types of debugging, including monitoring,
changing present values, and forced refreshing.

1-1 Introduction and Features

1

1-1-2 Features of Safety Control Unit

NX-series Safety Control Unit User's Manual (Z930)

1 - 7

Safety CPU Unit

NX-series
CPU Unit

Coupler
Unit

Coupler
Unit

Safety control system

NX-series NX Bus/EtherCAT Integrated System

The Safety CPU Unit performs safety
process data communications with the
Safety I/O Units.

EtherCAT master
/NX bus master

Slave Terminal Slave Terminal

 Coupler Unit: EtherCAT Coupler Unit
 Safety Input: Safety Input Unit
 Safety Output: Safety Output Unit

(These abbreviations apply to all subsequent
figures in this manual.)

Safety Input

Safety Input

Safety Output

Safety Output

EtherCAT

1 Overview

1-2

1-2-1

System Configuration and Configura­tion Devices

Safety Control System Configuration on NX bus of CPU Unit or EtherCAT Network

In this configuration, the safety control system operates on the NX bus of the NX-series
on the EtherCAT network.
The safety control system consists of the NX-series CPU Unit with the NX bus master function, CPU
Unit with the EtherCA
slave function.

T master function, and the NX-series EtherCAT Coupler Unit with the EtherCAT

CPU Unit and

1 - 8

NX-series Safety Control Unit User's Manual (Z930)

Slave Terminal

The Safety CPU Unit performs
safety process data communica­tions with the Safety I/O Units.

Slave Terminal

Safety

CPU Unit

NJ/NX-series
CPU Unit

Coupler
Unit

Safety control system

NJ/NX-series EtherCAT Communications System

EtherCAT ma st er

• Coupler Unit: EtherCAT Coupler Unit

• Safety Input: Safety Input Unit

• Safety Output: Safety Output Unit
(These abbreviations apply to all figures in this manual.)

Safety Output

Safety Input

Safety Output

Safety Input

Coupler
Unit

Coupler
Unit

EtherCAT

EtherCAT ma st er

Safety
CPU
Unit

NJ/NX-series
CPU Unit

Coupler
Unit

Safety Output

Safety Input

Safety Output

Safety Input

Coupler
Unit

Coupler
Unit

Digital Output

Digital Input

EtherCAT

1 Overview

1-2 System Configuration and

Configuration Devices

1

1-2-1 Safety Control System Configuration on NX bus of CPU Unit or EtherCAT Network

The Safety CPU Unit serves the FSoE master function to control the Safety I/O Units with the FSoE

slave function served and the FSoE slave.*1 As shown in the above figure, the Safety CPU Unit can be
used to control not only the Safety I/O Units
Slave Terminal, but also it can control Safety I/O Units that are mounted to other EtherCAT Slave Ter­minals through the EtherCAT network. You can use only one Safety CPU Unit on each EtherCAT net­work.

*1. The connectivity of FSoE communications between the OMRON NX-series Safety Control Unit is confirmed

using the OMRON 1S-series Servo Driver.

Y

ou can also mount just a Safety CPU Unit to an EtherCAT Coupler Unit without mounting Safety I/O

Units, as shown in the following figure. Standard I/O Units*1 can also be mounted in the same Slave
Terminal, but they cannot be controlled by the Safety CPU Unit.

*1. This refers to NX Units used for standard control, such as Digital Input Units and Digital Output Units.

that are mounted to the same CPU Rack or EtherCAT

Refer to the NX-series
EtherCAT network configurations.

NX-series Safety Control Unit User's Manual (Z930)

EtherCAT Coupler Unit User’s Manual (Cat. No. W519) for information on

1 - 9

Safety
CPU Unit

Et

herNet/IP network

Safety
CPU Unit

The device that supports CIP Safety
on EtherNet/IP such as Safety I/O
Terminal and Robot Controller.

NX-series
CPU Unit

NX-series
CPU Unit

Safety control system

The Safety CPU Unit performs safety process data communications between the another
Safety CPU Units and the device that supports CIP Safety on EtherNet/IP by CIP Safety
on EtherNet/IP.

Safety Control System in EtherNet/IP Network

1 Overview

l

Applicable NJ/NX-series CPU Units and NX-series EtherCAT Coupler Unit

Refer to A-17 Version Information on page A - 105 for the model numbers and unit versions of the
NJ/NX-series CPU Units and the

Precautions for Correct Use

If you use an NX-series CPU Unit, you cannot set both the priority-5 periodic task and another
task for an EtherCAT Coupler Unit that contains a Safety Control Unit
Refer to the NX-series EtherCAT Coupler Unit User’s Manual (Cat. No. W519) for details on
task settings.

NX-series EtherCAT Coupler Units that can be used together.

.

1-2-2

Safety Control System Configuration on EtherNet/IP Network

The safety control system operates in the EtherNet/IP network.

Applicable NX-series CPU Units

l

Refer to A-17 Version Information on page A - 105 for the model numbers and unit versions of the
applicable

NX-series CPU Units.

1-2-3

Standalone Safety Control System Configuration

The safety control system operates in the Slave Terminals of the EtherNet/IP Coupler Units.

1 - 10

NX-series Safety Control Unit User's Manual (Z930)

Safety

CPU

Unit

Coupler
Unit

Coupler
Unit

Safety Control System

Safety Control System in EtherNet/IP Slave Terminals

Slave Terminal Slave Terminal

Safety Output

Safety Input

Safety Output

Safety Input

Safety

CPU

Unit

Coupler
Unit

The Safety CPU Unit
performs safety process data
communications with the
Safety I/O Units in the Slave
Terminal.

Standard
CPU Unit

1 Overview

You can control Safety I/O Units that are mounted to the same Slave Terminal as the Safety CPU Unit
You cannot use the EtherNet/IP network to control the operation of Safety I/O Units that are mounted
to other Slave T

erminals. You can use only one Safety CPU Unit on each Slave Terminal.

1-2 System Configuration and

Configuration Devices

1

1-2-4 Types of Safety Control Unit

Applicable NX-series EtherNet/IP Coupler Units

l

Refer to A-17 Version Information on page A - 105 for the model numbers and unit versions of the
applicable NX-series EtherNet/IP Coupler Units.

1-2-4

Types of Safety Control Unit

This section provides the Classification of NX-series Safety Control Unit.

Unit classification Introduction

Safety CPU Unit This Unit has safety control functions.

Safety I/O Units These Units have safety input functions or safety output functions.

Safety Input Unit
Safety Output Unit These Units have Safety Output functions.

Refer to Section 2 Specifications on page

It operates as an NX Unit.
It also operates as an FSoE master.
It operates as a CIP-Safety-on-EtherNet/IP device.

They operate as NX Units.
These Units operate as FSoE slaves.

These Units have safety input functions.

2 - 1 for details on individual Units.

NX-series Safety Control Unit User's Manual (Z930)

1 - 11

Ethernet

USB

USB

Sysmac Studio

Sysmac Studio

Sysmac Studio

Safety
CPU
Unit

NJ/NX-series
CPU Unit

Coupler
Unit

Safety Output

Safety Input

Coupler
Unit

Safety Output

Safety Input

EtherNet/IP

EtherCAT

1 Overview

1-3

1-3-1

1-3-2

Support Software

You use the Support Software to set up the safety control system for the Safety Control Unit and to
perform programming and debugging.

Applicable Support Software

You use the Support Software to set up the safety control system for the Safety Control Unit, and to
perform programming and debugging. Refer to A-17 Version Information on page A - 105 for informa­tion on combinations of the applicable Support Software and versions.

Refer to the Sysmac Studio Version 1 Operation Manual (Cat. No. W504) for the system requirements
of the Sysmac Studio.

Connection Method and Procedures for EtherCAT Coupler Units

In general, there are the following two ways to connect the Sysmac Studio.

• USB Connection or Ethernet Connection to the NJ/NX-series CPU Unit
The USB connection and Ethernet connection are functionally identical. This is the most common
connection method.

• USB Connection to the NX-series EtherCAT Coupler Unit
This method is functionally limited when compared with a connection to the NJ/NX-series CPU Unit.
This connection method is used mainly for debugging.

1 - 12

Refer to the Sysmac Studio Version 1 Operation Manual (Cat. No. W504) for the connection proce­dure.

You use the Sysmac Studio to connect to the USB port or the built-in EtherNet/IP port of the NJ/NX­series CPU Unit.
This connection allows you to download safety programs to the Safety CPU Unit
Safety I/O Units on the EtherCAT network.

USB Connection or Ethernet Connection to the NJ/NX-series CPU
Unit

and to monitor the

NX-series Safety Control Unit User's Manual (Z930)

USB

USB or EtherNet/IP

NJ/NX-series EtherCAT Communications System

Sysmac Studio

Safety
CPU
Unit

NJ/NX-series
CPU Unit

Coupler
Unit

Safety Output

Safety Input

Coupler
Unit

Safety Output

Safety Input

Accessible

Accessible

Safety control system

EtherCAT

Safety control system

USB

The Safety I/O Units mounted
under the other EtherCAT Coupler
Unit cannot be accessed.

Coupler
Unit

Sysmac Studio

NJ/NX-series EtherCAT
Communications System

Safety
CPU
Unit

NJ/NX-series
CPU Unit

Coupler
Unit

Safety Output

Safety Input

Safety Output

Safety Input

Only the Safety I/O Units
mounted under the Safety
CPU Unit are accessible.

EtherCAT

1 Overview

1-3 Support Software

1

1-3-2 Connection Method and Procedures for EtherCAT Coupler Units

USB connection to the EtherCAT Coupler Unit

You can connect the Sysmac Studio to the USB port on the EtherCAT Coupler Unit.
This connection allows you to download, upload, and monitor the safety programs for only the Safety
CPU Unit and Safety I/O Units that are under the EtherCAT Coupler Unit that the Sysmac Studio is
online with. The other devices cannot be accessed.

NX-series Safety Control Unit User's Manual (Z930)

Precautions for Correct Use

There are functional restrictions when you connect to the EtherCAT Coupler Unit via the USB
port in comparison with connecting to the NJ/NX-series CPU Unit. We therefore recommend
that you connect to the NJ/NX-series CPU Unit.

1 - 13

Safety Control System
in EtherNet/IP Slave Terminals

USB

Coupler
Unit

Safety

CPU

Unit

Safety Control System

Sysmac Studio

Only the Safety I/O Units
mounted under the Safety CPU
Unit are accessible.

The Safety I/O Units mounted under
the other Communications Coupler
Unit cannot be accessed.

Safety Output

Safety Input

Coupler
Unit

Safety

CPU

Unit

Safety Output

Safety Input

EtherNet/IP

1 Overview

Functional Differences on the Sysmac Studio Based on the Con­nection Point

The functions that you can use on the Sysmac Studio depend on what the Sysmac Studio is connect­ed to. Refer to the NX-series EtherCAT Coupler Unit User

’s Manual (Cat. No. W519) for details.

1-3-3

Connection Method and Procedures for EtherNet/IP Coupler Units

Connect the Sysmac Studio to the USB port on the EtherNet/IP Coupler Unit.
This connection allows you to download, upload, and monitor the safety programs for only the
CPU Unit and
online with. The other devices cannot be accessed.

Safety I/O Units that are under the EtherNet/IP Coupler Unit that the Sysmac Studio is

Safety

1 - 14

NX-series Safety Control Unit User's Manual (Z930)

Standard Control

Safety Control

Step 1. System Design

Step 1-1 Determining Safety Measures by Performing Risk Assessment

Step 2. Software Design

Step 2. Hardware Design

Step 2-1 Designing I/O and Processing

Step 2-2 Designing Safety Programs

Step 3 Calculating and Verifying Safety Response Performance

Step 3-1 Calculating Safety Reaction Time and Safety Distance

Step 3-2 Verifying Fulfillment of Required Specifications

Step 4. Software Settings and Programming

Step 4-1 Creating the Safety Control System Configuration

Step 4-3 Assigning Safety I/O Terminals to the Connected Devices

Step 4-4 Assigning Device Variables to I/O Ports

Step 4-5 Programming

Step 5. Installation and Wiring

Step 6. Checking Operation

Step 6-1 Changing to DEBUG Mode After Transferring the Slave Terminal Configuration Information

Step 6-2 Checking Operation Using the Controller

Step 6-3 Performing Safety Validation Testing

Step 6-5 Validating Safety from the Sysmac Studio (Transferring the Program to the
Non-volatile Memory)

Step 7. Operation, Maintenance, and Inspection

Software Design

Designing I/O and P rocessing

Designin g Tasks

Designin g User Program

Software Settings and Programming

Slave an d Unit Con figuratio ns

Controller Setup and Assignment of Device
Variables to I/O Ports

Programm ing

Offline Debugging

Transfer ring the P roject
(Includi ng Slave T erminal C onfigurati on Information)

Online D ebugging

Step 1-3 Designing the Interface between Standard Controls and Safety Controls

Step 1-2 Selecting Safety Devices

Checking Operation

Step 7-3 Inspection and Replacement

Step 7-1 Operation

Step 7-2 Troubleshooting Errors If They Occur

Step 2-1 Determining Wiring for
Communications, Power Supply,
and External I/O Devices

Step 4-2 Setting Up and Checking the Safety Process Data Communications

Step 4-6 Offline Debugging

Step 5-1 Installation

Step 5-3 Wiring the I/O

Step 5-4 Connecting the Computer That Runs the Sysmac Studio

Step 5-2 Connecting the Ethernet Cables

Step 6-4 Designing Device Security

1 Overview

1-4 Commissioning Procedures

1-4

1-4-1

Use the following procedure to build a safety system.
The procedure is divided into steps for standard control and safety control.

Commissioning Procedures

Overall Procedure

1

1-4-1 Overall Procedure

NX-series Safety Control Unit User's Manual (Z930)

1 - 15

1 Overview

1-4-2

Detailed Procedures

As described in the previous section, the standard controls and safety controls are linked with one an­other throughout the setup procedures.
This section describes the detailed procedures for the safety controls.

’

Refer to NJ/NX-series CPU Unit Software User
for using NJ/NX-series CPU Units for standard control.

Step 1. System Design

Step Description Reference

Step 1-1 Determining
Safety Measures by Per­forming Risk Assessment

Step 1-2 Selecting Safety
Devices

• Identify potential danger factors and perform

risk assessment.

• Study and decide on measures to reduce

risks.

Select the safety devices for inputs, logic, and
outputs of the safety controls.

s Manual (Cat. No. W501)for the detailed procedures

---

1-2 System Configuration and
Configuration Devices on page

1 - 8

ction 2 Specifications on

Se

page 2 - 1

2-1-2 Part Names and Func­tions on page 2 - 8

Step 1-3 Designing the In­terface between Standard
Controls and Safety Con­trols

Step 2. Software Design

Step Description Reference

Step 2-1 Designing I/O and
Processing

Design the interface between the standard con­trols and safety controls.
This is done by exposing the global variables to
the NJ/NX-series CPU Unit.

Design the configuration of the safety I/O devi­ces and Safety I/O Units.

• Safety I/O devices

• Program contents

5-7 Exposing Variables to
Standard Controllers on page

5 - 30

2-1-2 Part Names and Func­tions on page 2 - 8

1 - 16

NX-series Safety Control Unit User's Manual (Z930)

Step Description Reference

Step 2-2 Designing Safety
Programs

Design the POUs (Program Organization Units).

• Programs

• Function blocks

Design of Variables:

• Design the data types of the variables (partic-

ularly the design of safety data types and
standard data types).

• Define the variables that you will use in more

than one POU and variables that you will use
in only specific POUs.

• Define the variable names for the device vari-

ables that you use to access Safety I/O Units.

• Define the attributes of variables, such as the

Name attribute.

• Design the variables to expose to the user

program for the standard controls.

• Design the interface with the safety controls

of the user program for the standard controls.

1 Overview

ection 6 Programming on

S

page

6 - 1

1-4 Commissioning Procedures

1

1-4-2 Detailed Procedures

Step 2. Hardware Design

Step Description Reference

Step 2-1 Determining Wir­ing for Communications,
Power Supply, and Exter­nal I/O Devices

Determine the wiring for the communications
network, power supply, and safety I/O devices.

Step 3. Calculating and Verifying Safety Response Performance

Step Description Reference

Step 3-1 Calculating Safe­ty Reaction Time and Safe­ty Distance

Step 3-2 Verifying Fulfill­ment of Required Specifi­cations

Calculate the safety reaction times and use
them to find the safety distances.

Check to see if requirements are met. If require­ments are not met, reconsider the designs again
starting with the system design.

Step 4. Software Settings and Programming

2-1-2 Part Names and Func­tions on page 2 - 8

Manuals for specific Communi­cations Coupler Units
Manuals for the specific NX
Units

ection 8 Calculating Safety

S
Reaction Times on page

8 - 1

Section 8 Calculating Safety
Reaction Times on page

8 - 1

Step Description Reference

Step 4-1 Creating the
Safety Control System
Configuration

Step 4-2 Setting Up and
Checking the Safety Proc­ess Data Communications

NX-series Safety Control Unit User's Manual (Z930)

On the Sysmac Studio, configure the NX bus
master

Check the settings for the safety process data
communications and make any necessary
changes.

, Safety CPU Unit and Safety I/O Units

5-3 Controller Configuration

.

and Setup of the Safety Control
Units on page 5 - 5

5-4 Setting Up the Safety Proc­ess Data Communications on

page 5 - 12

1 - 17

1 Overview

Step Description Reference

Step 4-3 Assigning Safety
I/O Terminals to the Con­nected Devices

Step 4-4 Assigning Device
Variables to I/O Ports

Step 4-5 Programming Variable Registration:

On the parameter setting tab page for the
ty I/O Units, select the safety I/O devices that
are connected to the safety I/O terminals.

Register the device variables in the global varia­ble table.
(You can use either user-defined or automatical­ly assigned variable names.)

• Register the variables that are used by more

than one POU in the global variable table with
the Sysmac Studio.

• Register the variables that are used in only a

specific program in the local variable table for
that program.

• Register the variables that are used in only a

specific function block in the local variable ta­ble for that function block.

Safe-

5-5 Safety I/O Functions on
page 5 - 23

5-6 Registering Device V
bles on page 5 - 26

6-5 Programming Operations

on page 6 - 26

aria-

Writing Algorithms for POUs:
W

rite the algorithms for the POUs (programs

and function blocks) using the FBD language.

Step 4-6 Offline Debugging The Simulator is used to debug the program. 6-8 Offline Debugging on page

6 - 79

Step 5 Installation and Wiring

Step Description Reference

Step 5-1 Installation

Step 5-2 Connecting the
Ethernet Cables

Step 5-3 Wiring the I/O

• Connect the Units to each other.

• Mount the connected Units on a DIN T

Connect the NJ/NX-series CPU Units or other
standard controllers to the Communications
Coupler Units.

rack.

• Wire the Safety I/O Units.

Section 3 Installation and Wir­ing on page 3 -

Manuals for specific Communi­cations Coupler Units

ection 3 Installation and Wir-

S
ing on page 3 - 1

1

1 - 18

NX-series Safety Control Unit User's Manual (Z930)

1 Overview

Step Description Reference

Step 5-4 Connecting the
Computer That Runs the
Sysmac Studio

Use one of the following connections.

• Connect a USB cable to the NJ/NX-series

CPU Unit

*1

• Connect an Ethernet cable to the built-in

EtherNet/IP port on the NJ/NX-series CPU
Unit.*1

• Connect a USB cable to the Communications

Coupler Unit

*1. You can use this connection method only if you use an NJ/NX-series CPU Unit and EtherCAT Coupler Unit.

Step 6. Checking Operation

Step Description Reference

Step 6-1 Changing to DE­BUG Mode After Transfer­ring the Slave T
Configuration Information

erminal

Place the Sysmac Studio online with the NJ/NX­series CPU Unit*1 or the Communications Cou-

pler Unit and then transfer the Slave Terminal
configuration information.
Then, change the Safety CPU Unit from the
Safety CPU Unit Setup and Programming View.
This transfers the safety application data to the
Safety CPU Unit and enables debugging.

1-3 Support Software on page
1 -

12

Refer to the

Version 1 Operation Manual
(Cat. No. W504)

Manuals for specific Communi­cations Coupler Units

7-2 Transferring the Configura­tion Information on page

7 - 7

7-3 Operating Modes of the
Safety CPU Unit on page

7 - 11

7-4 Changing to DEBUG Mode

on page 7 - 17

Sysmac Studio

1-4 Commissioning Procedures

1

1-4-2 Detailed Procedures

Step 6-2 Checking Opera­tion Using the Controller

Step 6-3 Performing Safety
Validation T

Step 6-4 Designing Device
Security

Step 6-5 Validating Safety
from the Sysmac Studio

*1. You can use this connection method only if you use an NJ/NX-series CPU Unit and EtherCAT Coupler Unit.

esting

Check all wiring and the operation of the pro­gram to check that the Safety Control Unit oper­ates as intended.

Test all safety functions to see if they operate
according to designs.

Set the safety passwords. 7-9 Security Settings on page

After the safety validation testing has been
passed, execute the Safety Validation operation
from the Sysmac Studio.
This transfers the safety application data to the
non-volatile memory in the
enables operation.

Safety CPU Unit and

7-6 Functions for Checking Op-

on page

eration

7-6 Functions for Checking Op­eration on page 7 - 27

7 - 51

7-10 Performing Safety Valida­tion and Operation on page

7 - 56

7 - 27

Step 7. Operation, Maintenance, and Inspection

Step Description Reference

Step 7-1 Operation Restart the Safety CPU Unit.

If the Safety CPU Unit
gram, the Safety CPU Unit will automatically
start in RUN mode.

NX-series Safety Control Unit User's Manual (Z930)

has a validated user pro-

7-10 Performing Safety Valida­tion and Operation on page

7 - 56

1 - 19

1 Overview

Step Description Reference

Step 7-2 Troubleshooting
Errors If They Occur

Step 7-3 Inspection and
Replacement

If an error occurs, use the troubleshooting func­tion of the Sysmac Studio to check the error and
determine the cause. Then, remove the error.

Perform periodic maintenance.
If you find any defects or problems during the in­spection, replace the affected devices.

ection 12 Troubleshooting on

S

page 12 - 1

S

ection 13 Inspection and

Maintenance on page 13 - 1

1 - 20

NX-series Safety Control Unit User's Manual (Z930)

2

2

Specifications

This section provides the specifications of the Safety CPU Unit and the Safety I/O
Units.

2-1 Safety CPU Unit

2-1-1 Models and Specifications ............................................................................ 2 - 2

2-1-2 Part Names and Functions ........................................................................... 2 - 8

2-1-3 Indicators .................................................................................................... 2 - 10

2-2 Safety Input Unit......................................................................................... 2 - 16

2-2-1 Models and Specifications .......................................................................... 2 - 16

2-2-2 Part Names and Functions ......................................................................... 2 - 22

2-2-3 Indicators .................................................................................................... 2 - 24

2-3 Safety Output Unit...................................................................................... 2 - 28

2-3-1 Models and Specifications .......................................................................... 2 - 28

2-3-2 Part Names and Functions ......................................................................... 2 - 35

2-3-3 Indicators .................................................................................................... 2 - 38

2-4 PFH ..............................................................................................................2 - 41

............................................................................................ 2 - 2

NX-series Safety Control Unit User's Manual (Z930)

2 - 1

2 Specifications

2-1

2-1-1

Safety CPU Unit

This section describes the models and specifications of the Safety CPU Units as well as the names
and functions of the parts.

Models and Specifications

The Safety CPU Unit specifications are described below.

Models

The following table specifies the list of Safety CPU Unit models.

Maximum

Model

NX-SL3300 256 points 512 KB

NX-SL3500 1,024 points 2,048 KB

NX-SL5500 1,024 points 2,048 KB

NX-SL5700 2,032 points 4,096 KB

*1. Only FSoE master connections are supported.
*2. CIP Safety originator connections, CIP Safety target connections, and FSoE master connections are sup-

ported.

number of

safety I/O

points

Program ca-

pacity

Number of

safety I/O con-

nections

*1

32

*1

128

*2

128

*2

254

I/O refreshing method

Free-Run refreshing

Free-Run refreshing

Free-Run refreshing

Free-Run refreshing

General Specifications

This section provides the general specifications of the Safety CPU Unit.

Item Specification

Enclosure Mounted in a panel (open)
Grounding method Ground to 100 Ω or less

2 - 2

NX-series Safety Control Unit User's Manual (Z930)

Item Specification

Operating environment Ambient operating tem-

perature

Ambient operating hu­midity

Atmosphere Must be free from corrosive gases.

Ambient storage temper­ature

Altitude 2,000 m max.
Pollution degree Pollution degree 2 or less: Conforms to JIS B 3502

Noise immunity Conforms to IEC 61
Insulation class CLASS III (SELV)
Overvoltage category Category II: Conforms to JIS B 3502 and IEC 61131-2
EMC immunity level Zone B
Vibration resistance Conforms to IEC 60068-2-6

Shock resistance Conforms to IEC 60068-2-27

Installation method DIN T

0 to 55°C

10% to 95% (with no condensation or icing)

−25 to 70°C (with no condensation or icing)

and IEC 61

5 to 8.4 Hz with amplitude of 3.5 mm

8.4 to 150 Hz, acceleration of 9.8 m/s
100 min. in each X, Y
10 min. each = 100 min. total)

147 m/s2, 3 times in each X, Y, and Z directions

2 Specifications

131-2

131-2, 2 kV (power supply line)

2

, and Z directions (10 sweeps of

rack (IEC 60715 TH35-7.5/TH35-15)

2-1 Safety CPU Unit

2

2-1-1 Models and Specifications

Individual Specifications

This section provides the individual specifications of the Safety CPU Unit.

Datasheet Items for Safety CPU Unit

l

The following table gives the meaning of the datasheet items for the Safety CPU Unit.

Item Description

Maximum number of safety
I/O points

Program capacity This is the capacity of the safety programs in the Unit.

Number of safety I/O connec-

*1

tions

Number of CIP Safety origi-

nator connections

Number of CIP Safety target

connections

Number of originators that
can be connected with a mul­ti-cast connection

Number of FSoE master con­nections

I/O refreshing method The I/O refreshing methods that are used by the Unit.

*2

*2

This is the number of safety I/O points that Safety CPU Unit can control.

This is the maximum number of Safety I/O connections that can be set to this
Unit. The value is the total number of CIP Safety originator connections, CIP
Safety target connections, and FSoE master connections.

This is the maximum number of CIP Safety originator connections that can be
set to this Unit.

This is the maximum number of CIP Safety target connections that can be set
to this Unit.

When this unit is a CIP Safety target, it is the number of CIP Safety origina­tors that can be connected with a multi-cast connection by a single CIP Safe­ty target connection.

It is the maximum number of FSoE master connections that can be config­ured to this unit.

NX-series Safety Control Unit User's Manual (Z930)

2 - 3

2 Specifications

External connection termi­nals

Indicators The type of indicators on the Unit and the layout of those indicators.
Hardware switch settings It is the type and layout of hardware switches for the Unit.
Dimensions (mm) These are the external dimensions of the Unit. The dimensions are given in

I/O power supply method The method for supplying I/O power for the Unit. The supply method is deter-

Current capacity of I/O power
supply terminal

NX Unit power consumption The power consumption of the NX Unit power supply of the Unit.

Current consumption from
I/O power supply

Weight The weight of the Unit.

Installation orientation and
restrictions

*1. Refer to 5-4-3 Calculating the Number of Connections on page 5 - 20 for how to calculate the number of

connections.

*2. The number of CIP Safety connections that can be actually set depends on the maximum number of routa-

ble CIP Safety connections of the NX-series CPU Unit.
For NX102 CPU Units, the maximum number of routable CIP Safety connections is 16.

Item Description

The type of terminal block and connector that is used for connecting the Unit.
This specification includes the number of terminals for a screwless clamping
terminal block.

the form W × H × D. The dimensions are given in

mined for each Unit. The power can be supplied either from the NX bus or
from an external source.

The current capacity of the I/O power supply terminals (IOV/IOG) of the Unit.
Do not exceed this value when supplying the I/O power to the connected ex­ternal devices.

The current consumption from I/O power supply of the Unit. This value does
not include the load current of any external connection loads or the current
consumption of any connected external devices.

This is the installation orientation of the Unit. Any restrictions to specifications
that result from the installation orientation are also given.

"millimeters".

NX-SL3300

l

Item Specification

Maximum number of safety I/O points 256 points
Program capacity 512 KB
Number of safety I/O connections 32
Number of CIP Safety originator connections 0
Number of CIP Safety target connections 0

Number of originators that can be connected
with a multi-cast connection

Number of FSoE master connections 32
I/O refreshing method Free-Run refreshing
External connection terminals None
Indicators [FS] LED, [VALID] LED, [DEBUG] LED, [TS] LED, [RUN]

Hardware switch settings None
Dimensions (mm) 30 × 100 × 71 mm (W × H × D)
I/O power supply method Not supplied.
Current capacity of I/O power supply terminals No I/O power supply terminals

0

LED

2 - 4

NX-series Safety Control Unit User's Manual (Z930)

2 Specifications

Item Specification

NX Unit power consumption

Current consumption from I/O power supply No consumption
Weight 75 g max.
Installation orientation and restrictions Installation orientation:

*1. The cable length for the Units that supply power to the corresponding Unit must be up to 20 m.
*2. Only NX102 CPU Units can be connected. NX1P2 CPU Units cannot be connected.

NX-SL3500

l

*1

• Connected to a CPU Unit

1.25 W max.

• Connected to a Communications Coupler Unit

0.90 W max.

• Connected to a CPU Unit

Possible in the upright installation orientation.

*2

• Connected to a Communications Coupler Unit

Six possible orientations.

Restriction: None.

2-1 Safety CPU Unit

2

2-1-1 Models and Specifications

Item Specification

Maximum number of safety I/O points 1,024 points
Program capacity 2,048 KB
Number of safety I/O connections 128
Number of CIP Safety originator connections 0
Number of CIP Safety target connections 0

Number of originators that can be connected
with a multi-cast connection

Number of FSoE master connections 128
I/O refreshing method Free-Run refreshing
External connection terminals None
Indicators [FS] LED, [VALID] LED, [DEBUG] LED, [TS] LED, [RUN]

Hardware switch settings None
Dimensions (mm) 30 × 100 × 71 mm (W × H × D)
I/O power supply method Not supplied.
Current capacity of I/O power supply terminals No I/O power supply terminals

NX Unit power consumption

*1

0

LED

• Connected to a CPU Unit

1.25 W max.

• Connected to a Communications Coupler Unit

0.90 W max.

Current consumption from I/O power supply No consumption
Weight 75 g max.

NX-series Safety Control Unit User's Manual (Z930)

2 - 5

Seven-segment indicator

[TS] LED, [NS] LED, [FS] LED

[P ERR] LED, [RUN] LED,

[VALID] LED, [DEBUG] LED

2 Specifications

Installation orientation and restrictions Installation orientation:

*1. The cable length for the Units that supply power to the corresponding Unit must be up to 20 m.
*2. Only NX102 CPU Units can be connected. NX1P2 CPU Units cannot be connected.

NX-SL5500

l

Maximum number of safety I/O points 1,024 points
Program capacity 2,048 KB
Number of safety I/O connections 128

Number of CIP Safety originator con­nections

Number of CIP Safety target connec­tions

Number of originators that can be
connected with a multi-cast connec­tion

Number of FSoE master connections 128
I/O refreshing method Free-Run refreshing
External connection terminals None
Indicators [TS] indicator, [NS] indicator, [FS] indicator, [P ERR] indicator, [RUN]

Item Specification

• Connected to a CPU Unit

Possible in the upright installation orientation.

*2

• Connected to a Communications Coupler Unit

Six possible orientations.

Restriction: None.

Item Specification

128

4

8

, [V

indicator
cator

ALID] indicator, [DEBUG] indicator, seven-segment indi-

2 - 6

Hardware switch settings [SERVICE] switch, [SETTING] switch

Dimensions (mm) 30 × 100 × 71 mm (W × H × D)
I/O power supply method Not supplied.

NX-series Safety Control Unit User's Manual (Z930)

Seven-segment indicator

[TS] indicator, [NS] indicator, [FS] indicator

[P ERR] indicator, [RUN] indicator,

[VALID] indicator, [DEBUG] indicator

2 Specifications

Item Specification

Current capacity of I/O power supply
terminal

NX Unit power consumption

Current consumption from I/O power
supply

Weight 130 g max.

Installation orientation and restric-

*2

tions

*1. The cable length for the Units that supply power to the corresponding Unit must be up to 20 m.
*2. Only NX102 CPU Units and Communication Control Units can be connected. NX1P2 CPU Units or Commu-

nications Coupler Units cannot be connected.

NX-SL5700

l

Item Specification

Maximum number of safety
I/O points

Program capacity 4,096 KB

Number of safety I/O connec­tions

Number of CIP Safety origi­nator connections

Number of CIP Safety target
connections

Number of originators that
can be connected with a mul­ti-cast connection

Number of FSoE master con­nections

I/O refreshing method Free-Run refreshing

External connection termi­nals

Indicators [TS] indicator, [NS] indicator, [FS] indicator, [P ERR] indicator, [RUN] indica-

*1

2,032 points

254

254

4

8

254

None

tor

No I/O power supply terminals

3.35 W max.

No consumption

Installation orientation: Upright installation
Restriction: None.

ALID] indicator, [DEBUG] indicator, seven-segment indicator

, [V

2-1 Safety CPU Unit

2

2-1-1 Models and Specifications

NX-series Safety Control Unit User's Manual (Z930)

2 - 7

(D)

(D)

(E)

(C)

(G)

(F)

(E)

(A)

(C)

(C)

(B)

(E)

(B)

(B)

(E)

2 Specifications

Hardware switch settings [SERVICE] switch, [SETTING] switch

Dimensions (mm) 30 × 100 × 71 (W × H × D)
I/O power supply method Not supplied.

Current capacity of I/O power
supply terminals

NX Unit power consump-

*1

tion

Current consumption from
I/O power supply

Weight 130 g max.

Installation orientation and

restrictions

*1. The cable length for the Units that supply power to the corresponding Unit must be up to 20 m.
*2. Only NX102 CPU Units and Communication Control Units can be connected. NX1P2 CPU Units or Commu-

nications Coupler Units cannot be connected.

Item Specification

No I/O power supply terminals

3.35 W

No consumption

Installation orientation: Upright installation

*2

Restriction: None.

2-1-2

Part Names and Functions

This section describes the names and functions of the Safety CPU Unit components.

NX-SL3300 or NX-SL3500

l

2 - 8

NX-series Safety Control Unit User's Manual (Z930)

(D)

(D)

(E)

(C)

(I)

(F)

(E)

(A)

(G)

(H)

(C)

(C)

(B)

(E)

(B)

(B)

(G)

(H)

(E)

2 Specifications

Letter Name Function

(A) Marker attachment loca-

tions

(B) Protrusions for removing

the Unit

(C) DIN Track mounting

hook
(D) NX bus connector This is the NX-series bus connector.
(E) Unit hookup guides These guides are used to connect two Units.
(F) Indicators The indicators show the current operating status and power supply status of

(G) Unit specifications The specifications of the Safety CPU Unit are given.

NX-SL5500/SL5700

l

The locations where markers are attached. The markers made by OMRON
are installed for the factory setting. Commercially available markers can also
be installed.
Refer to 3-1-2 Attaching Markers on page 3 - 4.

The protrusions to hold when removing the Unit.

These hooks are used to mount the NX Unit to a DIN Track.

the Safety CPU Unit.
Refer to 2-1-3 Indicators on page 2 - 10.

2-1 Safety CPU Unit

2

2-1-2 Part Names and Functions

Let-

ter

(A) Marker attachment loca-

tion

(B) Protrusions for removing

the Unit

(C) DIN Track mounting

hook
(D) NX bus connector This is the NX-series bus connector.
(E) Unit hookup guides These guides are used to connect two Units.
(F) Indicators The indicators show the current operating status and power supply status of

(G) Service switch This switch is used for the start trigger of various functions.

NX-series Safety Control Unit User's Manual (Z930)

Name Function

The locations where markers are attached. The markers made by OMRON
are installed for the factory setting. Commercially available markers can also
be installed.
Refer to 3-1-2 Attaching Markers on page 3 - 4.

The protrusions to hold when removing the Unit.

This hook is used to mount the NX Unit to a DIN Track.

the Safety CPU Unit.
Refer to 2-1-3 Indicators on page 2 - 10.

2 - 9

(A)

(B

)

2 Specifications

2-1-3

Let-

ter

(H) DIP switch This switch is used for the Safety Unit Restore and the safety data logging

(I) Unit specifications The specifications of the Safety CPU Unit are given.

Name Function

function.
Refer to 10-1-2 Safety Unit Restore Function on page 10 ­the Safety Unit Restore.
Refer to 11-3 Safety Data Logging Operation Procedure on page 11 - 6 for
details on the Safety Data Logging function.

3 for details on

Indicators

The Safety CPU Unit has indicators that show the current operating status and communications sta­tus.

WARNING

Do not use the status of the indicators on the NX-series Safety Control
Units for safety operations.
This will compromise the safety functions of the Unit and may cause
serious injury in the event of an accident.

NX-SL3300/SL3500

Letter Name Function

(A) Model number display Displays part of the model number of the Safety CPU Unit.
(B) Indicators Show the current operating status and communications status of the Safety

CPU Unit.

The rest of this section gives the indicator specifications.

TS Indicator

l

The TS indicator shows the current status of the Safety CPU Unit and the communications status
with the NX bus master.

The following table lists the possible states for this indicator and what they mean.

Color Status Meaning

Green Lit. The Unit is operating normally.

2 - 10

Flashing (at 2-s
intervals)

Initialization is in progress (from when the power supply is turned ON until
RUN or PROGRAM mode is entered), or I/O allocation information data is
being downloaded from the Sysmac Studio.

NX-series Safety Control Unit User's Manual (Z930)

2 Specifications

Color Status Meaning

Red Lit. A hardware error, WDT error, or other critical error has occurred.

---

Flashing (at 1-s
intervals)

Not lit.

An NX bus communications error, I/O allocation information data error, or
other recoverable minor error that is attributed to the NX bus has occurred.

• There is no Unit power supply

.

• Restarting the Unit

aiting for initialization to start

• W

FS Indicator

l

The FS indicator shows the safety communications status and safety function status of the Safety
CPU Unit.

The following table lists the possible states for this indicator and what they mean.

Color Status Meaning

Green

Red Flashing (at 1-s in-

Green/Re

d

--- Not lit. Power is not being supplied or a fatal fault has occurred.

Lit. All FSoE connections are established and there are no errors in any

Safety CPU Unit functions.

Flashing (at 1-s in­tervals)

tervals)

Alternates at 1-s in­tervals.

One or more FSoE connections are not established or are currently
being established and there are no errors in any Safety CPU Unit
functions.

An FSoE communications error, program execution error, or other
minor error that is attributed to the safety application has occurred.
The safety application data has not been stored.

2-1 Safety CPU Unit

2

2-1-3 Indicators

*1

*1. For approximately 30 seconds after the power supply to the Safety CPU Unit is turned ON, a Safety Process

Data Communications Initialization Error event is not registered as an error if the Safety I/O Units
exist. During that time, the FS indicator will flash green.

RUN Indicator

l

do not

The RUN indicator shows the execution status of the safety programs.

The following table lists the possible states for this indicator and what they mean.

Color Status Meaning

Green Lit. Execution of a safety program is in progress (operation is in progress in

RUN mode, or DEBUG mode (RUN)).

Flashing (at 1-s
intervals)

---

DEBUG Indicator

l

Not lit. Operation is in progress in PROGRAM mode or DEBUG mode (STOPPED),

Initialization is in progress (from when the power supply is turned ON until
RUN or PROGRAM mode is entered).

or a fatal fault has occurred.

The DEBUG indicator shows the status whether the debug function is executable on Safety CPU
Unit.
Refer to 6-8-3 Controlling BOOL Variables, Changing Present V

alues, and Using Forced Refresh-

ing on page 6 - 82 for the debug function of Safety CPU Unit.

The following table lists the possible states for this indicator and what they mean.

NX-series Safety Control Unit User's Manual (Z930)

2 - 11

(A)

(B)

(C)

2 Specifications

Color Status Meaning

Yellow Lit. Operation is in progress in DEBUG mode.

--- Not lit. Operation is in progress in a mode other than DEBUG mode or a fatal fault has occur-

VALID Indicator

l

The VALID indicator shows whether safety validation has been performed.
The following table lists the possible states for this indicator and what they mean.

Color Status Meaning

Yellow Lit. Safety application data from the execution of the safety validation is stored in the non-

--- Not lit. Safety application data from the execution of the safety validation is not stored in the

red.

volatile memory.

non-volatile memory, or a fatal fault has occurred.

Refer to 7-3 Operating Modes of the Safety CPU Unit

on page 7 - 11 for details on the relationship

between the operating modes of the Safety CPU Unit and the indicators.

NX-SL5500/SL5700

Letter Name Function

(A) Model number display Displays part of the model number of the Safety CPU Unit.
(B) Seven-segment Indicator Displays detailed information on the Safety CPU Unit.
(C) Indicators Show the current operating status and communications status of the Safety

CPU Unit.

2 - 12

The rest of this section gives the indicator specifications.

TS Indicator

l

The TS indicator shows the current status of the Safety CPU Unit and the communications status
with the NX Bus Master.

The following table lists the possible states for this indicator and what they mean.

NX-series Safety Control Unit User's Manual (Z930)

Color Status Meaning

Green Lit The Unit is operating normally.

2 Specifications

Flashing (at 2-s intervals) Initialization is in progress (from when the power supply is

turned ON until RUN or PROGRAM mode is entered), or
I/O allocation information data is being downloaded from
the Sysmac Studio.

Red

--- Not lit

Lit A hardware error, WDT error, or other critical error has oc-

curred.

Flashing (at 1-s intervals) An NX bus communications error, I/O allocation information

data error, or other recoverable minor error that is attributed
to the NX bus has occurred.

• There is no Unit power supply

• The Unit is restarting

• Waiting for initialization to start

NS Indicator

l

The NS indicator shows the CIP Safety communications status of the Safety CPU Unit.

The following table lists the possible states for this indicator and what they mean.

Color Status Meaning

Green Lit The CIP Safety connections are established.

Flashing (at 1-s intervals) The CIP Safety connections are not established.

2-1 Safety CPU Unit

2

2-1-3 Indicators

Red Flashing (at 1-s intervals)

--- Not lit The CIP Safety communications are not executed.

*1. For approximately 30 seconds after the power supply to the Safety CPU Unit is turned ON, the CIP Safety

Target Does Not Exist

FS Indicator

l

is not registered as an error. During that time, the NS indicator will flash red.

A CIP Safety communications error occurred.

*1

The FS indicator shows the FSoE communications status of the Safety CPU Unit.

The following table lists the possible states for this indicator and what they mean.

Color Status Meaning

Green Lit All FSoE connections are established.

Flashing (at 1-s intervals) The FSoE connections are being established.

Red Flashing (at 1-s intervals)

--- Not lit FSoE communications are not executed.

*1. For approximately 30 seconds after the power supply to the Safety CPU Unit is turned ON, a FSoE Master

Connection Not Established Error event is not registered as an error if the Safety I/O Units do not exist. Dur­ing that time, the FS indicator will flash green.

An FSoE communications error occurred.

*1

NX-series Safety Control Unit User's Manual (Z930)

2 - 13

2 Specifications

P ERR Indicator

l

The P ERR indicator shows the error status of the running program or settings of the Safety CPU
Unit.

The following table lists the possible states for this indicator and what they mean.

Color Status Meaning

Red Lit The safety program, CIP Safety communications, and

--- Not lit No errors in the running program or settings

RUN Indicator

l

The RUN indicator shows the execution status of the programs for the Safety CPU Unit.

FSoE communications stopped due to the running program
or settings, which resulted in error.

Flashing (at 1-s intervals) Local error occurred in the running program.

The following table lists the possible states for this indicator and what they mean.

Color Status Meaning

Green Lit Execution of a safety program is in progress (operation is in

progress in RUN mode, or DEBUG mode (RUN)).

Flashing (at 1-s intervals) Initialization is in progress (from when the power supply is

turned ON until RUN or PROGRAM mode is entered).

--- Not lit Operation is in progress in PROGRAM mode or DEBUG
mode (STOPPED), or a fatal fault has occurred.

DEBUG Indicator

l

The DEBUG indicator shows the status whether the debug function can be executed on Safety
CPU Unit.
Refer to 6-8-3 Controlling BOOL Variables, Changing Present V

alues, and Using Forced Refresh-

ing on page 6 - 82 for the debug function of Safety CPU Unit.

The following table lists the possible states for this indicator and what they mean.

Color Status Meaning

Yellow

--- Not lit Operation is in progress in a mode other than DEBUG

Lit Operation is in progress in DEBUG mode. (the debug func-

tion can be executed)

mode or a fatal fault has occurred. (the debug function can­not be executed)

2 - 14

VALID Indicator

l

The VALID indicator shows whether safety validation has been performed on the safety application
data in the Safety CPU Unit.

The following table lists the possible states for this indicator and what they mean.

NX-series Safety Control Unit User's Manual (Z930)

2 Specifications

Color Status Meaning

Yellow Lit Safety application data from the execution of the safety vali-

dation is stored in the non-volatile memory.

---

Seven-segment Indicator

l

The two-digit seven-segment indicator shows the detailed information on the Safety CPU Unit.

Not lit Safety application data from the execution of the safety vali-

dation is not stored in the non-volatile memory, or a fatal
fault has occurred.

2-1 Safety CPU Unit

Item Meaning

At normal operation It shows the lowest one byte of the safety signature for the safety pro-

gram that is operating. If the safety signature is not confirmed, “—“ is dis­played.
While a CIP Safety originator connection is being established, the indica­tor flashes. When all the CIP Safety originator connections are establish­ed, the indicator is lit.

When an error occurs Refer to 12-2-1 Troubleshooting the Main Errors in the Safety CPU Unit

12 - 3.

101.

3.

on page 11 - 7.

When a signature code is
checked

When the Safety Unit Restore is
executed

When the Safety Data Logging
is executed

on page
Refer to A-14 Checking the Signature Code on the Seven-segment Indi-

cator on page A ­Refer to 10-1-2 Safety Unit Restore Function on page 10 -

Refer to 11-4 Checking the Logging Status

2

2-1-3 Indicators

NX-series Safety Control Unit User's Manual (Z930)

2 - 15

2 Specifications

2-2

2-2-1

Safety Input Unit

This section describes the models and specifications of the Safety Input Units as well as the names
and functions of the parts.

Models and Specifications

The Safety Input Unit specifications are described below.

Models

The following table specifies the list of Safety Input Unit models.

Number of

Model

NX-SIH400 4 points 2 points Sinking in-

NX-SID800 8 points 2 points Sinking in-

safety in-

put points

Number

of test
output
points

Internal I/O

common

puts (PNP)

puts (PNP)

Rated

input

voltage

24 VDC Can be con-

24 VDC Cannot be

OMRON

Special

Safety Input

Devices

nected.

connected.

Number

of safety

slave

connec-

tions

1 Free-Run re-

1 Free-Run re-

I/O refresh­ing method

freshing

freshing

General Specifications

This section provides the general specifications of the Safety Input Unit.

Item Specification

Enclosure Mounted in a panel (open)
Grounding method Ground to 100 Ω or less

2 - 16

NX-series Safety Control Unit User's Manual (Z930)

2 Specifications

Item Specification

Operating environment Ambient operating tem-

perature

Ambient operating humid­ity

Atmosphere Must be free from corrosive gases.

Ambient storage tempera­ture

Altitude 2,000 m max.
Pollution degree Pollution degree 2 or less: Conforms to JIS B 3502

Noise immunity Conforms to IEC 61
Insulation class CLASS III (SELV)
Overvoltage category Category II: Conforms to JIS B 3502 and IEC 61131-2
EMC immunity level Zone B
Vibration resistance Conforms to IEC 60068-2-6

Shock resistance Conforms to IEC 60068-2-27

Isolation method Photocoupler isolation
Insulation resistance 20 MΩ
Dielectric strength 510 VAC between isolated circuits for 1 minute at a

Installation method DIN Track (IEC 60715 TH35-7.5/TH35-15)

0 to 55°C

10% to 95% (with no condensation or icing)

−25 to 70°C (with no condensation or icing)

and IEC 61

5 to 8.4 Hz with amplitude of 3.5 mm

8.4 to 150 Hz, acceleration of 9.8 m/s
100 min. in each X, Y
10 min. each = 100 min. total)

147 m/s2, 3 times in each X, Y, and Z directions

leakage current of 5 mA max.

131-2

131-2, 2 kV (power supply line)

2

, and Z directions (10 sweeps of

between isolated circuits (at 100 VDC)

2-2 Safety Input Unit

2

2-2-1 Models and Specifications

Individual Specifications

This section provides the individual specifications of the Safety Input Unit.

Datasheet Items for Safety Input Unit

l

The following table gives the meaning of the datasheet items for the Safety Input Units.

Item Specification

Number of safety input points This is the number of safety input points on the Unit.
Number of test output points This is the number of test output points on the Unit. The test output points

are used with the safety input terminals.

Internal I/O common This is the polarity that the Unit uses to connect to input devices.
Rated input voltage This is the rated input voltage of the Unit.

OMRON Special Safety Input De­vices

Number of safety slave connec­tions

I/O refreshing method This is the I/O refreshing method for the Unit.

This tells whether the Unit supports the connection of OMRON Special
Safety Input Devices (D40A Non-contact Door Switches, E3FS Single
Beam Safety Sensors, etc.).

This is the number of slave connections that the Unit can have through
FSoE. Y
connection.

ou can perform communications with one FSoE master device per

NX-series Safety Control Unit User's Manual (Z930)

2 - 17

2 Specifications

External connection terminals This is the type of terminal block and connector that is used to wire the

Indicators This gives the names and the layout of the indicators on the Unit.
Safety input current This is the input current at the rated voltage of the safety inputs on the

Safety input ON voltage This is the input voltage at which the safety inputs on the Unit turn ON.

Safety input OFF voltage/OFF
current

est output type This is the polarity that the Unit uses to connect to devices.

T
Test output rated current This is the maximum load current for each test output on the Unit.
Test output ON residual voltage This is the residual voltage when the test output on the Unit is ON.
Test output leakage current This is the leakage current when the test output on the Unit is OFF.
Dimensions (mm) These are the external dimensions of the Unit. The dimensions are given

Isolation method This is the method that is used to isolate the input circuits from the internal

Insulation resistance This is the insulation resistance between the input circuits and the internal

Dielectric strength This is the dielectric strength between the input circuits and the internal

I/O power supply method This is the method that is used to supply I/O power to the Unit.

Current capacity of I/O power
supply terminal

NX Unit power consumption This is the power consumption of the Unit from the NX bus power supply.

Current consumption from I/O
power supply

Weight This is the weight of the Unit.
Circuit layout This is the internal circuits of the Unit.
Terminal connection diagram This is the connection diagram between the Unit and connected external

Installation orientation and re­strictions

Protective functions These are the protective functions that are supported by the Unit.

Item Specification

Unit. This specification includes the number of terminals for a screwless
clamping terminal block.

Unit.

These are the input voltage and input current at which the safety inputs on
the Unit turn OFF

in the form W × H × D. The dimensions are given in millimeters.

circuits of the Unit.

circuits of the Unit.

circuits of the Unit.

This is the current capacity of the I/O power supply terminals (IOV/IOG)
on the Unit. When you supply I/O power to external devices that are con­nected to the Unit, make sure that the total power does not exceed this
value.

This is the current consumption of the Unit from the I/O power supply. This
value does not include the load current of any external connection loads
or the current consumption of any connected external devices.

devices.
This is the installation orientation of the Unit. If the installation orientation

imposes any restrictions on the specifications, those restrictions are also
described.

.

2 - 18

NX-SIH400

l

Item Specification

Number of safety input points 4 points
Number of test output 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

Number of safety slave connec­tions

Can be connected.

1

NX-series Safety Control Unit User's Manual (Z930)

[IN] indicator

[I

N ERR] indicator

Internal Circuits

T0 – 1

Terminal block

Si0 – 3

I/O power supply +

I/O power supply -

NX bus

connector

(left)

I/O power supply +

I/O power supply -

NX bus

connector

(right)

2 Specifications

Item Specification

I/O refreshing method Free-Run refreshing
External connection terminals Screwless clamping terminal block (8 terminals)
Indicators [TS] indicator, [FS] indicator, [IN] indicator, [IN ERR] indicator

Safety input current 4.5 mA typical
Safety input ON voltage 11 VDC min.

Safety input OFF voltage/OFF
current

Test output type Sourcing outputs (PNP)
Test output rated current 25 mA max.
Test output ON residual voltage 1.2 V max. (IOV and all output terminals)
Test output leakage current 0.1 mA max.
Dimensions (mm) 12 × 100 × 71 (W × H × 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

I/O power supply method Power supplied from the NX bus

Current capacity of I/O power
supply terminals

NX Unit power consumption

Current consumption from I/O
power supply

Weight 70 g max.

Circuit layout

5 VDC max./1 mA max.

mA max.

No applicable terminals.

• Connected to a CPU Unit or a Communication Control Unit

1.10 W max.

• Connected to a Communications Coupler Unit

0.70 W max.

20 mA max.

2-2 Safety Input Unit

2

2-2-1 Models and Specifications

NX-series Safety Control Unit User's Manual (Z930)

2 - 19

Si0

Safety Input Unit

NX-SIH400

A1 B1

A8 B8

Si1

T0 T1

Si2 Si3

T0 T1

Safety Switch

[IN] indicator[I

N ERR] indicator

2 Specifications

Terminal connection diagram Si0 to Si3: Safety input terminals

Installation orientation and re­strictions

Protective functions Overvoltage protection circuit and short detection (test outputs)

*1. Only NX102 CPU Units and Communication Control Units can be connected. NX1P2 CPU Units cannot be

connected.

Item Specification

T0, T1: Test output terminals

Refer to 4-3-1 Safety Input Function on page 4 - 10 for details.
Installation orientation:

• Connected to a CPU Unit or a Communication Control Unit

Possible in the upright installation orientation.

• Connected to a Communications Coupler Unit

Six possible orientations.
Restriction: Maximum ambient temperature is 50°C for any orientation oth­er than upright installation.

*1

NX-SID800

l

Item Specification

Number of safety input points 8 points
Number of test output 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

Number of safety slave connec­tions

I/O refreshing method Free-Run refreshing
External connection terminals Screwless clamping terminal block (16 terminals)
Indicators [TS] indicator, [FS] indicator, [IN] indicator, [IN ERR] indicator

Safety input current 3.0 mA typical
Safety input ON voltage 15 VDC min.

Cannot be connected.

1

2 - 20

NX-series Safety Control Unit User's Manual (Z930)

Internal Circuits

T0–1

Terminal block

Si0–7

I/O power supply +

I/O power supply -

I/O power supply +

I/O power supply -

NX bus

connector (left)

NX bus
connector
(right)

Si0

Safety Input Unit

NX-SID800

Safety Switch

A1 B1

A8 B8

Si1

T0 T1

Si2 Si3

T0 T1

Si4 Si5

T0 T1

Si6 Si7

T0 T1

2 Specifications

Item Specification

Safety input OFF voltage/OFF
current

Test output type Sourcing outputs (PNP)
Test output rated current 50 mA max.
Test output ON residual voltage 1.2 V max. (IOV and all output terminals)
Test output leakage current 0.1 mA max.
Dimensions (mm) 12 × 100 × 71 (W × H × 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

I/O power supply method Power supplied from the NX bus

Current capacity of I/O power
supply terminals

NX Unit power consumption

Current consumption from I/O
power supply

Weight 70 g max.

Circuit layout

5 VDC max./1 mA max.

mA max.

No applicable terminals.

• Connected to a CPU UNIT or a Communication Control Unit

1.10 W max.

• Connected to a Communications Coupler Unit

0.75 W max.

20 mA max.

2-2 Safety Input Unit

2

2-2-1 Models and Specifications

NX-series Safety Control Unit User's Manual (Z930)

Terminal connection diagram Si0 to Si7: Safety input terminals

T0, T1: Test output terminals

Refer to 4-3-1 Safety Input Function on page 4 - 10 for details.

2 - 21

(C)

(D)

(H)

(G)

(F)

(C)

(A)

(E)

(C)(E)

(C)

(B)

(B)

2 Specifications

Installation orientation and re­strictions

Protective functions Overvoltage protection circuit and short detection (test outputs)

*1. Only NX102 CPU Units and Communication Control Units can be connected. NX1P2 CPU Units cannot be

connected.

Item Specification

Installation orientation:

• Connected to a CPU Unit or a Communication Control Unit

Possible in the upright installation orientation.

• Connected to a Communications Coupler Unit

Six possible orientations.
Restriction: Maximum ambient temperature is 50°C for any orientation oth­er than upright installation.

*1

2-2-2

Part Names and Functions

This section provides the names and functions of the parts of the Safety Input Unit.

Letter Name Function

(A) Marker attachment loca-

tion

(B) NX bus connector This is the NX-series bus connector.
(C) Unit hookup guides These guides are used to connect two Units.
(D) DIN Track mounting

(E) Protrusions for removing

(F) Indicators The indicators show the current operating status of the Safety Input Unit or

(G) Terminal block The terminal block is used to connect external devices.
(H) Unit specifications The specifications of the Safety Input Unit are given here.

hooks

the Unit

The locations where markers are attached. The markers made by OMRON
are installed for the factory setting. Commercially available markers can also
be installed.
Refer to 3-1-2 Attaching Markers on page 3 - 4.

These hooks are used to mount the NX Unit to a DIN Track.

The protrusions to hold when removing the Unit.

signal input status.
Refer to 2-2-3 Indicators on page 2 - 24.

2 - 22

NX-series Safety Control Unit User's Manual (Z930)

Terminal Blocks

8-terminal type

(B)

16-terminal type

(C)

(A)

A1

A2

A3

A4

A5

A6

A7

A8

B1

B2

B3

B4

B5

B6

B7

B8

A1

A2

A3

A4

A5

A6

A7

A8

B1

B2

B3

B4

B5

B6

B7

B8

8-terminal type

(B)

16-terminal type

(C)

(A)

A1

A2

A3

A4

A5

A6

A7

A8

B1

B2

B3

B4

B5

B6

B7

B8

A1

A2

A3

A4

A5

A6

A7

A8

B1

B2

B3

B4

B5

B6

B7

B8

2 Specifications

There are two models of screwless clamping terminal blocks: NX-TB£££2 and NX-TB£££1. The
following models of Terminal Blocks can be mounted to Safety Input Units.

£££2

NX-TB

2-2 Safety Input Unit

2

2-2-2 Part Names and Functions

NX-TB£££1

NX-series Safety Control Unit User's Manual (Z930)

2 - 23

2 Specifications

Letter Name Function

(A) Terminal number

(B) Release holes Insert a flat-blade screwdriver into these holes to connect or remove the wires.

(C) Terminal holes The wires are inserted into these holes.

Terminal Blocks for Safety Input Units come in two types depending on the number of terminals that
can be used. There are 8-terminal and 16-terminal Terminal Blocks.
The terminal block must have the same number of terminals that the Unit is designed for.

The 8-terminal type does not have terminal holes and release holes for the following terminals.

• A2, A4, A6, A8, B2, B4, B6, and B8.

The terminal numbers are given by column letters A and B, and row numbers 1 to 8.

indications

The combination of the "column" and "row"
A8 and B1 to B8.
The terminal number indicators are the same regardless of the number of terminals
on the terminal block, as shown above.

Additional Information

gives the terminal numbers from A1 to

There are two types of Terminal Blocks in terms of current capacity, 10 A for the NX-TB£££2 Termi­nal Blocks and 4 A for the NX-TB

£££1 Terminal Blocks.
To differentiate between the two types of Terminal Blocks, use the terminal number column indications.
The Terminal Block with white letters on a dark background is the NX-TB£££2 Terminal Block.
You can mount either type of Terminal Block to a Unit with a terminal current capacity of 4 A max.
You can only mount the NX-TB£££2 Terminal Block to the Units that the current capacity specifica­tion of the terminals is greater than 4 A.

• Applicable Terminal Blocks for Each Unit Model
The following table gives the Terminal Blocks that are applicable to each Unit.

Unit model number

NX-SIH400 NX-TBA081 8 Not provided 4 A

NX-SID800 NX-TBA161 16 Not provided 4 A

Model number Number of terminals Ground terminal mark Current capacity

NX-TBA082 10 A

NX-TBA162 10 A

Terminal block

Precautions for Correct Use

You can mount either NX-TB£££1 or NX-TB£££2 Terminal Block to a Unit with a terminal
current capacity of 4 A.
Even if you mount an NX-TB

£££2 Terminal Block, the current specification does not change
because the terminal current capacity of the Unit is 4 A.
Refer to the I/O power supply terminal current capacities given in Individual Specifications on
page 2 - 17 for the terminal current capacity specifications of the Units.
Refer to A-11 List of Screwless Clamping Terminal Block Models on page A - 96 or the model
numbers of the Terminal Blocks.

2-2-3

2 - 24

Indicators

This section describes the indicators of the Safety Input Unit.

NX-series Safety Control Unit User's Manual (Z930)

WARNING

Unit with 4 I/O Points Unit with 8 I/O Points

(A)

(B)

IN

ININ ERR

IN ERR

2 Specifications

Do not use the status of the indicators on the NX-series Safety Control
Units for safety operations.
This will compromise the safety functions of the Unit and may cause
serious injury in the event of an accident.

The indicator pattern depends on the number of input points, as shown below.

Letter Name Function

(A) Model number dis-

play

(B) Indicators Show the current operating status and communications status of the Safety I/O

Displays part of the model number of the Safety I/O Units.
The model number indication is red on all Safety Control Units.

Units.

2-2 Safety Input Unit

2

2-2-3 Indicators

Safety Input Unit Operation Status Indicators

Indicators to show the operation status of the Safety Input Unit are located in the center of the front
side of the Safety Input Unit.

The following section describes the specifications of each indicator.

TS Indicator

l

The TS indicator shows the current status of the Safety Input Unit and its communications status
with the NX Bus Master.

NX-series Safety Control Unit User's Manual (Z930)

2 - 25

2 Specifications

The following table lists the possible states for this indicator and what they mean.

Color Status Meaning

Green Lit The Unit is operating normally.

Red

--- Not lit

FS Indicator

l

Flashing (at 1-s intervals) Initializing, or I/O allocation information data is being down-

loaded from the Sysmac Studio.

Lit A hardware error, WDT error, or other critical error has oc-

curred.

Flashing (at 1-s intervals) An NX bus communications error, I/O allocation information

data error, or other recoverable minor error that is attributed
to the NX bus has occurred.

• There is no Unit power supply

• Restarting the Unit

• Waiting for initialization to start

The FS indicator shows the FSoE communications status and safety function status of the Safety
Input Unit.

The following table lists the possible states for this indicator and what they mean.

Color Status Meaning

Green Lit The FSoE connections are established and there are no er-

rors in any Safety I/O Units functions.

Flashing (at 1-s intervals) The FSoE connections are being established.

Red Flashing (at 1-s intervals) An FSoE communications error, safety input terminal error,

or other minor error has occurred.

--- Not lit Power is not being supplied or a fatal fault has occurred.

IN Indicator

l

The IN indicator shows the signal input status of the safety input terminal.

The following table lists the possible states for this indicator and what they mean.

Color Status Meaning

Yellow

Lit The safety input terminal is ON and there are no errors.

2 - 26

--- Not lit The safety input terminal is OFF or an error has occurred.

IN ERR Indicator

l

The IN ERR indicator shows the error status of the safety input terminal.

The following table lists the possible states for this indicator and what they mean.

Color Status Meaning

Red Lit An error has occurred in the safety input terminal.

Flashing (at 1-s intervals) An error has occurred in the safety input terminal for the

other channel of the dual channel I/O.

NX-series Safety Control Unit User's Manual (Z930)

2 Specifications

Color Status Meaning

--- Not lit An error has occurred in the safety input terminal.

Refer to 12-2-1 Troubleshooting the Main Errors in the Safety CPU Unit on page
on the relationship between the errors of the Safety Input Unit and the indicators.

12 - 3 for details

2-2 Safety Input Unit

2

2-2-3 Indicators

NX-series Safety Control Unit User's Manual (Z930)

2 - 27

2 Specifications

2-3

2-3-1

Safety Output Unit

This section describes the models and specifications of the Safety Output Units as well as the names
and functions of the parts.

Models and Specifications

The Safety Output Unit specifications are described below.

Models

The following table specifies the list of the Safety Output Unit models.

Number

Number of

Model

NX-SOH200 2 points Sourcing out-

NX-SOD400 4 points Sourcing out-

safety out-

put points

Internal I/O

common

puts (PNP)

puts (PNP)

Maximum load

current

2.0 A/point,

4.0 A/Unit at 40°C

2.5 A/Unit at 55°C

0.5 A/point and

2.0 A/Unit

Rated

voltage

24 VDC 1 Free-Run re-

24 VDC 1 Free-Run re-

of safety

slave

connec-

tions

I/O refreshing

method

freshing

freshing

General Specifications

This section provides the general specifications of the Safety Output Unit.

Item Specification

Enclosure Mounted in a panel (open)
Grounding method Ground to 100 Ω or less

2 - 28

NX-series Safety Control Unit User's Manual (Z930)

2 Specifications

Item Specification

Operating environment Ambient operating tem-

perature

Ambient operating humid­ity

Atmosphere Must be free from corrosive gases.

Ambient storage tempera­ture

Altitude 2,000 m max.
Pollution degree Pollution degree 2 or less: Conforms to JIS B 3502

Noise immunity Conforms to IEC 61
Insulation class CLASS III (SELV)
Overvoltage category Category II: Conforms to JIS B 3502 and IEC 61131-2
EMC immunity level Zone B
Vibration resistance Conforms to IEC 60068-2-6

Shock resistance Conforms to IEC 60068-2-27

Isolation method Photocoupler isolation
Insulation resistance 20 MΩ
Dielectric strength 510 VAC between isolated circuits for 1 minute at a

Installation method DIN Track (IEC 60715 TH35-7.5/TH35-15)

0 to 55°C

10% to 95% (with no condensation or icing)

−25 to 70°C (with no condensation or icing)

and IEC 61

5 to 8.4 Hz with amplitude of 3.5 mm

8.4 to 150 Hz, acceleration of 9.8 m/s
100 min. in each X, Y
10 min. each = 100 min. total)

147 m/s2, 3 times in each X, Y, and Z directions

leakage current of 5 mA max.

131-2

131-2, 2 kV (power supply line)

2

, and Z directions (10 sweeps of

between isolated circuits (at 100 VDC)

2-3 Safety Output Unit

2

2-3-1 Models and Specifications

Individual Specifications

This section provides the individual specifications of the Safety Output Unit.

Datasheet Items for Safety Output Unit

l

The following table gives the meaning of the datasheet items for the Safety Output Units.

Item Specification

Number of safety output points This is the number of safety output points on the Unit.
Internal I/O common This is the polarity that the Unit uses to connect to output devices.
Maximum load current This is the maximum load current for outputs on the Unit. A specifica-

tion is given for each output and each Unit.

Rated voltage This is the rated voltage of the outputs on the Unit.

Number of safety slave connec­tions

I/O refreshing method The I/O refreshing methods that are used by the Unit.
External connection terminals The type of terminal block and connector that is used for connecting

Indicators This gives the names and the layout of the indicators on the Unit.

This is the number of slave connections that the Unit can have through
FSoE. Y
per connection.

the Unit. This specification includes the number of terminals for a
screwless clamping terminal block.

ou can perform communications with one FSoE master device

NX-series Safety Control Unit User's Manual (Z930)

2 - 29

2 Specifications

Safety output rated current This is the maximum load current for safety outputs on the Unit. The

Safety output ON residual voltage This is the residual voltage when a safety output on the Unit is ON.
Safety output OFF residual voltage This is the residual voltage when a safety output on the Unit is OFF.
Safety output leakage current This is the leakage current when a safety output on the Unit is OFF.
Dimensions (mm) These are the external dimensions of the Unit. The dimensions are giv-

Isolation method This is the method that is used to isolate the output circuits from the

Insulation resistance This is the insulation resistance between the output circuits and the in-

Dielectric strength This is the dielectric strength between the output circuits and the inter-

I/O power supply method The method for supplying I/O power for the Unit.

Current capacity of I/O power sup­ply terminal

NX Unit power consumption This is the power consumption of the Unit from the NX bus power sup-

Current consumption from I/O pow­er supply

eight This is the weight of the Unit.

W
Circuit layout This is the internal circuits of the Unit.
Terminal connection diagram This is the connection diagram between the Unit and external devices.

Installation orientation and restric­tions

Protective functions These are the protective functions that are supported by the Unit.

Item Specification

inrush current of the external connection load must be lower than this
value.

en in the form W × H × D. The dimensions are given in millimeters.

internal circuits of the Unit.

ternal circuits of the Unit.

nal circuits of the Unit.

This is the current capacity of the I/O power supply terminals (IOV/
IOG) on the Unit. When you supply I/O power to external devices that
are connected to the Unit, make sure that the total power does not ex­ceed this value.

.

ply
This is the current consumption of the Unit from the I/O power supply.

This value does not include the load current of any external connection
loads or the current consumption of any connected external devices.

This is the installation orientation of the Unit. If the installation orienta­tion imposes any restrictions on the specifications, those restrictions
are also described.

2 - 30

NX-SOH200

l

Item Specification

Number of
safety output
points

Internal I/O
common

Maximum load
current

Rated input
voltage

Number of
safety slave
connections

I/O refreshing
method

2 points

PNP (sourcing outputs)

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.

24 VDC (20.4 to 28.8 VDC)

1

Free-Run refreshing

NX-series Safety Control Unit User's Manual (Z930)

Item Specification

[OUT] indicator

[O

UT ERR] indicator

I/O
power
supply -

NX bus connector
(right)

Internal Circuits

So0–1

Terminal block

IOG

I/O

power

supply +

I/O

power

supply -

I/O
power
supply +

NX bus connector

(left)

External con-

Screwless clamping terminal block (8 terminals)

nection termi­nals

Indicators [TS] indicator, [FS] indicator, [OUT] indicator, [OUT ERR] indicator

2 Specifications

2-3 Safety Output Unit

Safety output

1.2 V max. (between IOV and all output terminals)

ON residual
voltage

Safety output

2 V max. (between IOG and all output terminals)

OFF residual
voltage

Safety output

0.1 mA max.

leakage cur­rent

Dimensions

12 × 100 × 71 (W × H × D)

(mm)

Isolation meth-odPhotocoupler isolation

Insulation re-

20 MΩ min. between isolated circuits (at 100 VDC)

sistance

Dielectric

510 VAC between isolated circuits for 1 minute at a leakage current of 5 mA max.

strength

I/O power sup-

Power supplied from the NX bus

ply method

Current ca-

IOG: 2 A/terminal max.

pacity of I/O
power supply
terminals

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.

Current con­sumption from
I/O power sup­ply

Weight 65 g max.

Circuit layout

40 mA max.

2

2-3-1 Models and Specifications

NX-series Safety Control Unit User's Manual (Z930)

2 - 31

So0

Safety Output Unit

NX-SOH200

A1 B1

A8 B8

So1

L L

IOG IOG

NC NC

NC NC

2 Specifications

Item Specification

Terminal con­nection dia­gram

So0 to So1: Safety output terminals
IOG: I/O power supply 0 V

Refer to 4-3-2 Safety Output Function on page 4 - 32 for details.

2 - 32

NX-series Safety Control Unit User's Manual (Z930)

Item Specification

2

1

0

4

3

2

0

30 40 5550100

Load current [A]

Ambient Operating Temperature (°C)

2.5 A

2

1

0

4

3

2

0

30 40 50100

Load current [A]

Ambient Operating Temperature (°C)

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

Six possible orientations.
Restriction: For upright installation, the ambient temperature is restricted as shown below ac­cording to the total Unit load current.

2 Specifications

*1

2-3 Safety Output Unit

2

2-3-1 Models and Specifications

For all installation orientations other than upright installation, the ambient temperature is re­stricted as shown below according to the total Unit load current.

Protective
functions

*1. Only NX102 CPU Units and Communication Control Units can be connected. NX1P2 CPU Units cannot be

connected.

NX-SOD400

l

Number of safety output
points

Internal I/O common PNP (sourcing outputs)
Maximum load current 0.5 A/point and 2.0 A/Unit
Rated input voltage 24 VDC (20.4 to 28.8 VDC)

Number of safety slave
connections

Overvoltage protection circuit and short detection

Item Specification

4 points

1

NX-series Safety Control Unit User's Manual (Z930)

2 - 33

[OUT] indicator

[OUT ERR] indicator

Internal Circuits

So0 – 3

Terminal block

IOG

I/O power supply +

I/O power supply -

NX bus connector

(left)

I/O power supply +

I/O power supply -

NX bus connector

(right)

2 Specifications

I/O refreshing method Free-Run refreshing

External connection ter­minals

Indicators [TS] indicator, [FS] indicator, [OUT] indicator, [OUT ERR] indicator

Item Specification

Screwless clamping terminal block (8 terminals)

Safety output ON residual

1.2 V max. (between IOV and all output terminals)

voltage

Safety output OFF residu-

2 V max. (between IOG and all output terminals)

al voltage

Safety output leakage cur-

0.1 mA max.

rent
Dimensions (mm) 12 × 100 × 71 (W × H × 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 Power supplied from the NX bus

Current capacity of I/O
power supply terminals

NX Unit power consump­tion

IOG (A3 and B3): 2 A/terminal max.
IOG (A7 and B7): 0.5 A/terminal 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

Weight 65 g max.

Circuit layout

60 mA max.

2 - 34

NX-series Safety Control Unit User's Manual (Z930)