Omron NX-ID3317, NX-ID4342, NX-ID3443, NX-ID3444, NX-ID4442 User Manual

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Machine Automation Controller

NX-series

Digital I/O Units

User’s Manual

NX-ID NX-IA NX-OC NX-OD NX-MD

Digital I/O Units

W521-E1-04

Page 2

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.

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 assumes 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.

• Windows, Windows 98, Windows XP, Windows Vista, and Windows 7 are registered trademarks of Microsoft Corporation in the USA and other countries.

• EtherCAT® is registered trademark and patented technology, licensed by Beckhoff Automation GmbH, Germany.

• Safety over EtherCAT® is registered trademark and patented technology, licensed by Beckhoff Automation GmbH, Germany.

• ODVA, CIP, CompoNet, DeviceNet, and EtherNet/IP 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.

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Introduction

Thank you for purchasing an NX-series Digital I/O Unit.

This manual contains information that is necessary to use the NX-series Digital I/O Unit. Please read this manual and make sure you understand the functionality and performance of the NX-series Digital I/O 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.

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 product.

• NX-series Digital I/O Unit

NX-ID /IA /OD/OC/MD

NX-series Digital I/O Unit User’s Manual (W521)

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CONTENTS

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

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

Applicable Products..................................................................................................................................... 1

Relevant Manuals .....................................................................................................6

Manual Structure ......................................................................................................7

Page Structure and Icons ............................................................................................................................ 7

Special Information...................................................................................................................................... 8

Precaution on Terminology .......................................................................................................................... 8

Terms and Conditions Agreement ..........................................................................9

Warranty, Limitations of Liability .................................................................................................................. 9

Application Considerations ........................................................................................................................ 10

Disclaimers ................................................................................................................................................ 10

Safety Precautions ................................................................................................. 11

Definition of Precautionary Information...................................................................................................... 11

Symbols..................................................................................................................................................... 11

Warnings.................................................................................................................................................... 12

Cautions..................................................................................................................................................... 13

Precautions for Safe Use....................................................................................... 15

Precautions for Correct Use.................................................................................. 19

Regulations and Standards................................................................................... 20

Conformance to EC Directives .................................................................................................................. 20

Conformance to UL and CSA Standards................................................................................................... 21

Conformance to Shipbuilding Standards ................................................................................................... 21

Conformance to KC Standards.................................................................................................................. 21

Software Licenses and Copyrights ............................................................................................................ 21

Unit Versions ..........................................................................................................22

Unit Versions.............................................................................................................................................. 22

Unit Versions and Sysmac Studio Versions............................................................................................... 24

Related Manuals .....................................................................................................25

Terminology ............................................................................................................28

Revision History .....................................................................................................30

Sections in this Manual .........................................................................................31

Section 1 Features and System Configuration

1-1 Features and Types of Digital I/O Units ............................................................................... 1-2

1-1-1 Digital I/O Unit Features.............................................................................................................. 1-2

1-1-2 Digital I/O Unit Types ..................................................................................................................1-3

1-2 System Configuration of Slave Terminals........................................................................... 1-4

1-2-1 Overview ..................................................................................................................................... 1-4

1-2-2 System Configuration..................................................................................................................1-4

NX-series Digital I/O Unit User’s Manual (W521)

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1-3 Model List............................................................................................................................... 1-6

1-3-1 Model Notation............................................................................................................................ 1-6

1-3-2 Digital Input Units........................................................................................................................ 1-9

1-3-3 Digital Output Units....................................................................................................................1-11

1-3-4 Digital Mixed I/O Units .............................................................................................................. 1-13

1-4 List of Functions.................................................................................................................. 1-14

1-4-1 Digital Input Units...................................................................................................................... 1-14

1-4-2 Digital Output Units................................................................................................................... 1-15

1-4-3 Digital Mixed I/O Units .............................................................................................................. 1-16

1-5 Support Software................................................................................................................. 1-17

Section 2 Specifications

2-1 General Specifications.......................................................................................................... 2-2

2-2 Individual Specifications ...................................................................................................... 2-3

Section 3 Part Names and Functions

CONTENTS

3-1 Part Names............................................................................................................................. 3-2

3-1-1 Screwless Clamping Terminal Block Type.................................................................................. 3-2

3-1-2 Connector Types......................................................................................................................... 3-6

3-2 Indicators ............................................................................................................................... 3-9

3-2-1 TS Indicator ...............................................................................................................................3-11

3-2-2 IN/OUT Indicator....................................................................................................................... 3-12

Section 4 Installation and Wiring

4-1 Installing NX Units................................................................................................................ 4-2

4-1-1 Installing NX Units ...................................................................................................................... 4-2

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

4-1-3 Removing NX Units .................................................................................................................... 4-5

4-1-4 Installation Orientation................................................................................................................ 4-7

4-2 Wiring the Power Supply to the Slave Terminal ................................................................. 4-8

4-2-1 Power Supply Types................................................................................................................... 4-8

4-2-2 Supplying Each Power Supply and Wiring ................................................................................. 4-9

4-2-3 Calculating the Total Current Consumption from I/O Power Supply ..........................................4-11

4-2-4 Power Supply-related Units for the NX-series .......................................................................... 4-12

4-3 Wiring the Terminals ........................................................................................................... 4-15

4-3-1 Wiring to the Screwless Clamping Terminal Block.................................................................... 4-15

4-3-2 Wiring to Connectors ................................................................................................................ 4-32

4-3-3 Checking the Wiring.................................................................................................................. 4-34

4-4 Wiring Examples.................................................................................................................. 4-35

4-4-1 Wiring the Input Units ............................................................................................................... 4-35

4-4-2 Precautions when Wiring to the Output Units ........................................................................... 4-47

Section 5 I/O Refreshing

5-1 I/O Refreshing for Slave Terminals ...................................................................................... 5-2

5-1-1 I/O Refreshing from CPU Unit to Slave Terminal........................................................................ 5-2

5-2 I/O Refreshing Methods ........................................................................................................ 5-3

5-2-1 Types of I/O Refreshing Methods ............................................................................................... 5-3

5-2-2 Setting the I/O Refreshing Methods............................................................................................ 5-4

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CONTENTS

5-2-3 Selecting NX Units ......................................................................................................................5-4

5-2-4 Free-Run Refreshing...................................................................................................................5-5

5-2-5 Synchronous Input Refreshing....................................................................................................5-9

5-2-6 Synchronous Output Refreshing...............................................................................................5-13

5-2-7 Time Stamp Refreshing.............................................................................................................5-18

5-2-8 Input Refreshing with Input Changed Time............................................................................... 5-19

5-2-9 Output Refreshing with Specified Time Stamp ..........................................................................5-24

5-2-10 An Example of Turning ON Outputs at Specific Times After the Sensor Inputs Change ..........5-29

Section 6 Digital Input Units

6-1 Types of Digital Input Units................................................................................................... 6-2

6-2 Specifications of I/O Data ..................................................................................................... 6-4

6-2-1 Allocable I/O Data ....................................................................................................................... 6-4

6-3 List of Settings....................................................................................................................... 6-7

6-4 Function ............................................................................................................................... 6-13

6-4-1 List of Digital Input Unit Functions............................................................................................. 6-13

6-4-2 Input Filter .................................................................................................................................6-14

Section 7 Digital Output Units

7-1 Types of Digital Output Units................................................................................................7-2

7-2 Specifications of I/O Data ..................................................................................................... 7-4

7-2-1 Allocable I/O Data ....................................................................................................................... 7-4

7-3 List of Settings....................................................................................................................... 7-8

7-4 Function ............................................................................................................................... 7-11

7-4-1 List of Digital Output Unit Functions.......................................................................................... 7-11

7-4-2 Load Rejection Output Setting ..................................................................................................7-12

7-4-3 Load Short-circuit Protection.....................................................................................................7-18

7-5 Push-pull Output ................................................................................................................. 7-20

7-6 Precautions when Using the Relay Output Units ............................................................. 7-21

Section 8 Digital Mixed I/O Units

8-1 Types of Digital Mixed I/O Units ........................................................................................... 8-2

8-2 Specifications of I/O Data ..................................................................................................... 8-3

8-2-1 Allocable I/O Data ....................................................................................................................... 8-3

8-3 List of Settings....................................................................................................................... 8-5

8-3-1 Input Settings ..............................................................................................................................8-5

8-3-2 Output Settings ........................................................................................................................... 8-6

8-4 Function ................................................................................................................................. 8-7

8-4-1 List of Input Functions................................................................................................................. 8-7

8-4-2 Output Functions.........................................................................................................................8-7

Section 9 Troubleshooting

9-1 How to Check for Errors ....................................................................................................... 9-2

9-2 Checking for Errors with the Indicators .............................................................................. 9-3

9-3 Checking for Errors and Troubleshooting on the Sysmac Studio.................................... 9-5

9-3-1 Checking for Errors from the Sysmac Studio .............................................................................. 9-5

NX-series Digital I/O Unit User’s Manual (W521)

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9-3-2 Event Codes and Corrections for Errors.....................................................................................9-7

9-3-3 Meaning of Error......................................................................................................................... 9-9

9-4 Resetting Errors .................................................................................................................. 9-16

9-5 Troubles Specific To Each Type of NX Units..................................................................... 9-17

9-5-1 Digital Inputs............................................................................................................................. 9-17

9-5-2 Digital Outputs .......................................................................................................................... 9-18

9-6 Troubleshooting Flowchart ................................................................................................ 9-19

Section 10 Inspection and Maintenance

10-1 Cleaning and Inspection .....................................................................................................10-2

10-1-1 Cleaning.................................................................................................................................... 10-2

10-1-2 Periodic Inspection ................................................................................................................... 10-2

10-2 Maintenance Procedures .................................................................................................... 10-5

Appendices

CONTENTS

A-1 Data Sheet ..............................................................................................................................A-2

A-1-1 Model List ................................................................................................................................... A-2

A-1-2 Digital Input Units........................................................................................................................ A-5

A-1-3 Digital Output Units...................................................................................................................A-24

A-1-4 Digital Mixed I/O Units .............................................................................................................. A-49

A-2 Dimensions ..........................................................................................................................A-59

A-2-1 Screwless Clamping Terminal Block Type................................................................................A-59

A-2-2 Connector Types....................................................................................................................... A-61

A-3 Connecting Connector-Terminal Block Conversion Units and I/O Relay Terminals .....A-63

A-3-1 Patterns for Combining Connector-Terminal Block Conversion Units and I/O Relay Terminals

..................................................................................................................................................A-63

A-3-2 Combinations of Connections................................................................................................... A-65

A-3-3 Connector-Terminal Block Conversion Unit Connection Diagrams ..........................................A-68

A-3-4 Connection Diagrams for I/O Relay Terminals..........................................................................A-74

A-4 EMC Directive Measures for Relay Outputs......................................................................A-80

A-5 List of NX Objects................................................................................................................A-81

A-5-1 Format of Object Descriptions .................................................................................................. A-81

A-5-2 Digital Input Units...................................................................................................................... A-82

A-5-3 Digital Output Units...................................................................................................................A-90

A-5-4 Digital Mixed I/O Units .............................................................................................................. A-99

A-6 List of Screwless Clamping Terminal Block Models......................................................A-104

A-6-1 Model Notation........................................................................................................................ A-104

A-6-2 List of Terminal Block Models .................................................................................................A-104

A-7 Version Information...........................................................................................................A-105

A-7-1 Relationship between Unit Versions of NX Units, Communications Coupler Units and CPU Units,

and Versions of Sysmac Studio ..............................................................................................A-105

Index

NX-series Digital I/O Unit User’s Manual (W521)

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Relevant Manuals

The table below provides the relevant manuals for the NX-series Digital I/O Units.

Read all of the manuals that are relevant to your system configuration and application to make the most of the NX-series Digital I/O Units.

Other manuals, such as related product manuals, are necessary for specific system configurations and applications. Refer to Related Manuals on page 25 for the related manuals.

Manual name Application

NX-series Digital I/O Units User's Manual

NX-series Data Reference Manual

Learning how to use NX-series Digital I/O Units

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

NX-series Digital I/O Unit User’s Manual (W521)

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Manual Structure

4-9

4 Installation and Wiring

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

stinU gnitnuoM 3-4

stnenopmoC rellortnoC gnitcennoC 1-3-4

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 connectors 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.

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

The following page structure and icons are used in this manual.

Manual Structure

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

NX-series Digital I/O Unit User’s Manual (W521)

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Manual Structure

Precautions for Safe Use

Precautions for Correct Use

Additional Information

Version Information

Special Information

Special information in this manual is classified as follows:

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

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

Additional information to read as required.

This information is provided to increase understanding or make operation easier.

Information on differences in specifications and functionality for CPU Units and Communications Coupler Units with different unit versions and for different versions of the Sysmac Studio is given.

Note References are provided to more detailed or related information.

Precaution on Terminology

• In this manual, “download” refers to transferring data from the Sysmac Studio to the physical Controller and “upload” refers to transferring data from the physical Controller to the Sysmac Studio. For the Sysmac Studio, synchronization is used to both upload and download data. Here, “synchronize” means to automatically compare the data for the Sysmac Studio on the computer with the data in the physical Controller and transfer the data in the direction that is specified by the user.

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

RightLeft

Down

NX-series Digital I/O Unit User’s Manual (W521)

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Terms and Conditions Agreement

Warranty, Limitations of Liability

Warranties

 Exclusive Warranty

Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron disclaims all other warranties, express or implied.

 Limitations

OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.

Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the Products or otherwise of any intellectual property right.

 Buyer Remedy

Omron’s sole obligation hereunder shall be, at Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty, repair, indemnity or any other claims or expenses regarding the Products unless Omron’s analysis confirms that the Products were properly handled, stored, installed and maintained and not subject to contamination, abuse, misuse or inappropriate modification. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice, recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above warranty.

See http://www.omron.com/global/ or contact your Omron representative for published information.

Limitation on Liability; Etc

OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.

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

NX-series Digital I/O Unit User’s Manual (W521)

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Terms and Conditions Agreement

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’s application or use of the Product. At Buyer’s request, Omron will provide applicable third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine, system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.

NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY 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’s test conditions, and the user must correlate it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability.

Change in Specifications

Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our practice to change part numbers when published ratings or features are changed, or when significant construction changes are made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at any time to confirm actual specifications of purchased Product.

Errors and Omissions

Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is assumed for clerical, typographical or proofreading errors or omissions.

NX-series Digital I/O Unit User’s Manual (W521)

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Safety Precautions

WARNING

Caution

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.

Definition of Precautionary Information

The following notation is used in this manual to provide precautions required to ensure safe usage of an NX-series Digital I/O 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.

Safety Precautions

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.

NX-series Digital I/O Unit User’s Manual (W521)

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Safety Precautions

WARNING

Warnings

During Power Supply

Do not touch the terminal section while power is ON.

Electric shock may occur.

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. Touching any of these parts may result in electric shock. There are sharp parts inside the Unit that may cause injury.

Fail-safe Measures

Provide safety measures in external circuits to ensure safety in the system if an abnormality occurs due to malfunction of the CPU Unit, other Units, or slaves or due to other external factors affecting operation.

Not doing so may result in serious accidents due to incorrect operation. Emergency stop circuits, interlock circuits, limit circuits, and similar safety measures must be provided in external control circuits.

The CPU Unit will turn OFF all outputs from Basic Output Units in the following cases. The remote I/O slaves will operate according to the settings in the slaves.

• If a power supply error occurs.

• If the power supply connection becomes faulty.

• If a CPU watchdog timer error or CPU reset occurs.

• If a Controller error in the major fault level occurs.

• While the CPU Unit is on standby until RUN mode is entered after the power is turned ON

External safety measures must be provided to ensure safe operation of the system in such cases.

The outputs may remain ON or OFF due to deposition or burning of the output relays or destruction of the output transistors. As a countermeasure for such problems, external safety measures must be provided to ensure safe operation of the system.

If external power supplies for slaves or other devices are overloaded or short-circuited, the voltage will drop, outputs will turn OFF, and the system may be unable to read inputs. Provide external safety measures in control with monitoring of external power supply voltage as required so that the system operates safely in such a case.

You must take fail-safe measures to ensure safety in the event of incorrect, missing, or abnormal signals caused by broken signal lines, momentary power interruptions, or other causes.

Not doing so may result in serious accidents due to incorrect operation.

NX-series Digital I/O Unit User’s Manual (W521)

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Voltage and Current Inputs

Caution

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.

Transferring

Always confirm safety at the destination node before you transfer Unit configuration information, parameters, settings, or other data from tools such as the Sysmac Studio.

The devices or machines may operate unexpectedly, regardless of the operating mode of the Controller.

Cautions

Safety Precautions

Wiring

When you connect a computer or other peripheral device to a Communications Coupler Unit that has a non-isolated DC power supply, either ground the 0-V side of the external power supply (i.e. Unit power supply) or do not ground it at all.

If the peripheral devices are grounded incorrectly, the external power supply (i.e. Unit power supply) may be short-circuited.

Never ground the 24-V side of the power supply, as shown in the following figure.

NX Unit power supply

0 V

Peripheral device

(e.g., computer)

Communications Coupler Unit

Non-isolated DC power

supply (internal power

supply circuit)

Peripheral device

cable

24 V

NX-series Digital I/O Unit User’s Manual (W521)

Ground terminal

Unit power supply

Page 16

Safety Precautions

Online Editing

Execute online editing only after confirming that no adverse effects will be caused by deviations in the timing of I/O. If you perform online editing, the task execution time may exceed the task period, I/O may not be refreshed with external devices, input signals may not be read, and output timing may change.

NX-series Digital I/O Unit User’s Manual (W521)

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Precautions for Safe Use

Down

Transporting

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

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

Mounting

• 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.

Precautions for Safe Use

Installation

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

• Do not write on the Communications Coupler Unit or 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 Slave Terminal.

Restricted

region (shaded

portion)

Communications Coupler

Unit or NX Unit

• 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 Track, which may result in malfunctions.

NX Unit

NX-series Digital I/O Unit User’s Manual (W521)

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Precautions for Safe Use

NG NG

Wiring

• Double-check all switches and other settings and double-check all wiring 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.

• Do not pull on the cables or bend the cables beyond their natural limit. Also, do not place heavy objects on top of the cables or other wiring lines. Doing so may break the cable.

• 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 holes on a screwless clamping terminal block. Doing so may damage the terminal block.

NG OK

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

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

• If you use reed switches for the input contacts for AC Input Units, use switches with an allowable current of 1 A or greater. If the capacity of the reed switches is too low, inrush current may fuse the contacts.

Power Supply Design

• Use all Units within the I/O power supply ranges that are given in the specifications.

• Supply sufficient power according to the contents of this manual.

• Use the power supply voltage that is specified in this manual.

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

• Do not apply voltages or connect loads to the Output Units or slaves in excess of the maximum ratings.

• Inrush current occurs when the power supply is turned ON. When selecting fuses or breakers for external circuits, consider their fusing and detection characteristics as well as the above precautions and allow sufficient margin in shut-off performance.

• Install external breakers and take other safety measures against short-circuiting and overcurrents in external wiring.

Turning ON the Power Supply

• When you set the Operating Mode at Startup, confirm that no adverse effect will occur in the system.

NX-series Digital I/O Unit User’s Manual (W521)

Page 19

Precautions for Safe Use

Actual Operation

• Before you start operation, always register the NX Units that are connected to the Communications Coupler Unit in the host communications master as the Unit Configuration Information.

• Check the user program, data, and parameter settings for proper execution before you use them for actual operation.

• If you change the fail-soft operation setting, the output status when the error occurs may also change. Confirm safety before you change the fail-soft operation setting.

• If you use fail-soft operation, write programming to determine whether Unit I/O data is valid. Without such programming, the user program cannot distinguish between Units for which I/O refreshing is continued and Units for which I/O refreshing is stopped.

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 Sysmac Studio.

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

Mounting or removing an NX Unit, Communications Coupler Unit, or CPU Unit Assembling Units Setting DIP switches or rotary switches Connecting or wiring cables Attaching or removing terminal blocks or connectors

Units that supply power continue to supply power to the Units for up to several seconds after the power supply is turned OFF. The PWR indicator remains lit as long as power is supplied. Confirm that the PWR indicator is not lit before you perform any of the above.

Operation

• Confirm that the controlled system will not be adversely affected before you perform any of the following operations.

Changing the operating mode of the CPU Unit (including changing the setting of the Operating Mode at Startup) Changing the user program or settings Changing set values or present values Forced refreshing

• Always sufficiently check the safety at the connected devices before you change the settings of an EtherCAT slave or Special Unit.

General Communications

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

EtherCAT Communications

• Make sure that the communications distance, number of nodes connected, and method of connection for EtherCAT are within specifications. Do not connect EtherCAT Coupler Units to EtherNet/IP, a standard in-house LAN, or other networks. An overload may cause the network to fail or malfunction.

• Malfunctions or unexpected operation may occur for some combinations of EtherCAT revisions of the master and slaves. If you disable the revision check in the network settings, check the slave revision settings in the master and the actual slave revisions, and then make sure that functionality is compatible in the manuals or other references. You can check the slave versions in the settings from the

NX-series Digital I/O Unit User’s Manual (W521)

Page 20

Precautions for Safe Use

Sysmac Studio and you can check the actual slave revisions from the Sysmac Studio or on slave nameplates.

• After you transfer the user program, the CPU Unit is restarted and communications with the EtherCAT slaves are cut off. During that period, the slave outputs behave according to the slave settings. The time that communications are cut off depends on the EtherCAT network configuration. Before you transfer the user program, confirm that the system will not be adversely affected.

• EtherCAT communications are not always established immediately after the power supply is turned ON. Use the system-defined variables in the user program to confirm that communications are established before attempting control operations.

• If frames sent to EtherCAT slaves are lost due to noise or other causes, slave I/O data is not communicated, and the intended operation is sometimes not achieved. Perform the following processing if noise countermeasures are necessary.

Program the _EC_InDataInvalid (Input Data Disable) system-defined variable as an interlock condition in the user program. Set the PDO communications consecutive timeout detection count setting in the EtherCAT master to at least 2. Refer to the NJ-series CPU Unit Built-in EtherCAT Port User’s Manual (Cat. No. W505) for details.

• When an EtherCAT slave is disconnected, communications will stop and control of the outputs will be lost not only for the disconnected slave, but for all slaves connected after it. Confirm that the system will not be adversely affected before you disconnect a slave.

• If you disconnect the cable from an EtherCAT slave to disconnect it from the network, any current communications frames may be lost. If frames are lost, slave I/O data is not communicated, and the intended operation is sometimes not achieved. Perform the following processing for a slave that needs to be replaced.

Unit Replacement

• 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.

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Precautions for Correct Use

Storage, Mounting, and Wiring

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

• Do not operate or store the Units in the following locations. Doing so may result in malfunction, in operation stopping, or in burning.

Locations subject to direct sunlight Locations subject to temperatures or humidity outside the range specified in the specifications Locations subject to condensation as the result of severe changes in temperature Locations subject to corrosive or flammable gases Locations subject to dust (especially iron dust) or salts Locations subject to exposure to water, oil, or chemicals Locations subject to shock or vibration

• Take appropriate and sufficient countermeasures during installation in the following locations.

Locations subject to strong, high-frequency noise Locations subject to static electricity or other forms of noise Locations subject to strong electromagnetic fields Locations subject to possible exposure to radioactivity 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.

• Install the Units away from sources of heat and ensure proper ventilation. Not doing so may result in malfunction, in operation stopping, or in burning.

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

• Use the EtherCAT connection methods and applicable cables that are specified in this manual and in the NJ-series CPU Unit Built-in EtherCAT Port User’s Manual (Cat. No. W505). Otherwise, communi- cations may be faulty.

Precautions for Correct Use

Actual Operation

• If you change the event level of an error, the output status when the error occurs may also change. Confirm safety before you change an event level.

Turning OFF the Power Supply

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

• Do not turn OFF the power supply while parameters are being written to the Communications Coupler Unit or NX Units.

EtherCAT Communications

• Do not disconnect the EtherCAT communications cables during operation. The outputs will become unstable. However, for the built-in EtherCAT port on the NJ-series CPU Unit, it is OK to disconnect the communications cable from an EtherCAT Slave Terminal that has been disconnected from communications in the software.

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Regulations and Standards

Conformance to EC Directives

Applicable Directives

• EMC Directives

• Low Voltage Directive

Concepts

 EMC Directives

OMRON devices that comply with EC 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 EC 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.

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

EMS (Electromagnetic Susceptibility): EN 61131-2 EMI (Electromagnetic Interference): EN 61131-2 (Radiated emission: 10-m regulations).

 Low Voltage Directive

Always ensure that devices operating at voltages of 50 to 1,000 VAC and 75 to 1,500 VDC meet the required safety standards. The applicable directive is EN 61131-2.

 Conformance to EC Directives

The NX-series Units comply with EC Directives. To ensure that the machine or device in which the NX-series Units are used complies with EC Directives, the following precautions must be observed.

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

• You must use reinforced insulation or double insulation for the DC power supplies that are connected as the Unit power supplies and I/O power supplies for the NX-series Units.

We recommend that you use the OMRON S8JX-series Power Supplies. EMC standard compliance was confirmed for the recommended Power Supplies.

• NX-series Units that comply with EC Directives also conform to the Common Emission Standard (EN 61131-2). 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 EC Directives.

• You must use power supplies with an output hold time of 10 ms or longer for the DC power supplies that are connected as the Unit power supplies and I/O power supplies for the NX-series Units.

• 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.

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Page 23

Conformance to UL and CSA Standards

Some NX-series products comply with UL and CSA standards. If you use an NX-series product that complies with UL or CSA standards and the machinery or system in which you use the NX-series product must also comply with the standards, refer to the Instruction Sheet that is provided with the product. The Instruction Sheet provides the application conditions for complying with the standards.

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

• The EtherCAT Coupler 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 (Class

NK))

• The EtherCAT Coupler 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.

Name Manufacturer Model

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

Conformance to KC Standards

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.

Software Licenses and Copyrights

This product incorporates certain third party software. The license and copyright information associated with this software is available at http://www.fa.omron.co.jp/nj_info_e/.

NX-series Digital I/O Unit User’s Manual (W521)

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Unit Versions

Notched

area

Unit

specifications

LOT No.

Unit version

Lot number

Unit model number

Lot number and unit version

Unit Versions

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” 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.

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.

Name Function

DDMYY: Lot number, : Used by OMRON.

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

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Unit Versions

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

Name Function

Lot number and unit version

Gives the lot number and unit version of the Unit.

• DDMYY: Lot number, : Used by OMRON. “M” gives the month (1 to 9: January to September, X: October, Y: November, Z: December)

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

Confirming Unit Versions with the Sysmac Studio

You can use the Unit Production Information on the Sysmac Studio to check the unit versions of Communications Coupler Unit and NX Units.

The following example is for an EtherCAT Slave Terminal.

Refer to the user's manual for the connected Communications Coupler Unit for details on how to check the unit versions of the Units on any other type of Slave Terminal.

1 Double-click EtherCAT under Configurations and Setup in the Multiview Explorer, and then

double-click the EtherCAT Coupler Unit. Or, right-click the EtherCAT Coupler Unit and select Edit from the menu. The Edit Slave Terminal Configuration Tab Page is displayed.

You can also display the Edit Slave Terminal Configuration Tab Page with any of the following operations.

Double-click EtherCAT under Configurations and Setup in the Multiview Explorer, right-click the EtherCAT Coupler Unit in the EtherCAT Configuration Edit Tab Page, and select Edit Slave Terminal Configuration.

Or, select the EtherCAT Coupler Unit on the EtherCAT Configuration Edit Tab Page click the Edit Slave Terminal Configuration Button.

2 Go online. 3 Right-click the EtherCAT Coupler Unit and select Display Production Information from the

menu.

The Production Information Dialog Box is displayed.

Simple Display

In this example, “Ver.1.0” is displayed next to the Unit model.

The following items are displayed.

•Slot number

• Unit model number

NX-series Digital I/O Unit User’s Manual (W521)

Detailed Display

Page 26

Unit Versions

Version Information

• Unit version

• Serial number

• Lot number

• Hardware version

• Software version

• Total power-ON time

The software version is displayed only for Units that contain software.

The total power-ON time is provided by function to monitor the total power-ON time. The function to monitor the total power-ON time was added for a version upgrade. Refer to the user's manual of the Communications Coupler Unit for the versions that support monitoring the total power-ON time.

Unit Versions 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-7 Version Information on page A-105 for the functions that are supported by each unit version.

NX-series Digital I/O Unit User’s Manual (W521)

Page 27

Related Manuals

The following table shows related manuals. Use these manuals for reference.

Manual name Cat. No. Model numbers Application Description

NX-series Digital I/O Units User’s Manual

NX-series Data Reference Manual

NX-series Analog I/O Units User’s Manual

NX-series System Units User’s Manual

NX-series Position Interface Units User’s Manual

NX-series Safety Control Unit User’s Manual

NX-series Safety Control Unit Instructions Reference Manual

Sysmac Studio Version 1 Operation Manual

NJ-series Troubleshootin

g Ma

nual

W521 NX-ID

NX-IA

NX-OC

NX-OD

NX-MD

W525 NX- Referencing lists of

W522 NX-AD

NX-DA

NX-TS

W523 NX-PD1

NX-PF0

NX-PC0

NX-TBX01

W524 NX-EC0

NX-ECS

NX-PG0

Z930 NX-SL

NX-SI

NX-SO

Z931 NX-SL Learning about the

W504 SYSMAC-

SE2

W503 NJ501-

NJ301-

Learning how to use NX-series Digital I/O Units

the data that is required to configure systems with NX-series Units Learning how to use NX-series Analog I/O Units and Temperature Input Units Learning how to use NX-series System Units

Learning how to use NX-series Position Interface Units

Learning how to use NX-series Safety Control Units

specifications of instructions for the Safety CPU Unit.

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

Learning about the errors that may be detected in an NJ-series Controller.

The hardware, setup methods, and functions of the NX-series Digital I/O Units are described.

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

The hardware, setup methods, and functions of the NX-series Analog I/O Units and Temperature Input Units are described.

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

The hardware, setup methods, and functions of the NX-series Incremental Encoder Input Units, SSI Input Units, and Pulse Output Unit are described.

The hardware, setup methods, and functions of the NX-series Safety Control Units are described.

The instructions for the Safety CPU Unit are described.

When programming, use this manual together with the NX-series Safety Control Unit User’s Manual (Cat. No. Z930).

Describes the operating procedures of the Sysmac Studio.

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

Use this manual together with the

NJ-series CPU Unit Hardware User's Manual (Cat. No. W500) and NJ-series CPU Unit Software User's Manual (Cat.

No. W501).

Related Manuals

NX-series Digital I/O Unit User’s Manual (W521)

Page 28

Related Manuals

Manual name Cat. No. Model numbers Application Description

NX-series EtherCAT Coupler Unit User’s Manual

NJ-series CPU Unit Hardware User’s Manual

NJ-series CPU Unit Software User's Manual

NJ-series CPU Unit Built-in EtherCAT Port User's Manual

NJ-series CPU Unit Motion Control User's Manual

W519 NX-ECC201

NX-ECC202

W500 NJ501-

NJ301-

W501 NJ501-

NJ301-

W505 NJ501-

NJ301-

W507 NJ501-

NJ301-

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

Learning the basic specifications of the NJ-series CPU Units, including introductory information, designing, installation, and maintenance.

Mainly hardware information is provided.

Learning how to program and set up an NJ-series CPU Unit.

Mainly software information is provided.

Using the built-in EtherCAT port on an NJ-series CPU Unit.

Learning about motion control settings and programming concepts.

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

• Features and system configuration

• Overview

• Part names and functions

• General specifications

• Installation and wiring

• Maintenance and Inspection

Use this manual together with the

NJ-series CPU Unit Software User's Manual (Cat. No. W501).

The following information is provided on an NJ-series CPU Unit.

• CPU Unit operation

• CPU Unit features

• Initial settings

• Programming based on IEC 61131-3 language specifications

Use this manual together with the

NJ-series CPU Unit Hardware User's Manual (Cat. No. W500).

Information on the built-in EtherCAT port is provided.

This manual provides an introduction and provides information on the configuration, features, and setup.

Use this manual together with the

NJ-series CPU Unit Hardware User's Manual (Cat. No. W500) and NJ-series CPU Unit Software User's Manual (Cat.

No. W501). The settings and operation of the CPU

Unit and programming concepts for motion control are described. When programming, use this manual together with the NJ-series CPU Unit Hardware

User's Manual (Cat. No. W500) and NJ-series CPU Unit Software User's Manual (Cat. No. W501).

NX-series Digital I/O Unit User’s Manual (W521)

Page 29

Manual name Cat. No. Model numbers Application Description

NJ-series Instructions Reference Manual

NJ-series Motion Control Instructions Reference Manual

W502 NJ501-

NJ301-

W508 NJ501-

NJ301-

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

Learning about the specifications of the motion control instructions.

The instructions in the instruction set (IEC 61131-3 specifications) are described.

When programming, use this manual together with the NJ-series CPU Unit Hardware User's Manual (Cat. No. W500) and NJ-series CPU Unit Soft- ware User's Manual (Cat. No. W501).

The motion control instructions are described. When programming, use this manual together with the NJ-series CPU Unit Hardware User's Manual (Cat. No. W500), NJ-series CPU Unit Software User's Manual (Cat. No. W501) and NJ-series CPU Unit Motion Control User's Manual (Cat. No. W507).

Related Manuals

NX-series Digital I/O Unit User’s Manual (W521)

Page 30

Terminology

Term

application layer status, AL status --- Status for indicating information on errors that occur in an application on

CAN application protocol over EtherCAT CAN in Automation CiA CiA is the international users' and manufacturers' group that develops

Communications Coupler Units --- The generic name of an interface unit for remote I/O communications on

DC time --- EtherCAT slaves that support distributed clock synchronization have a

device profile --- A collection of device dependent information and functionality providing

device variable --- A variable in the NJ-series CPU Unit to which process data on an Ether-

distributed clock DC Clock distribution mechanism used to synchronize EtherCAT slaves and

EtherCAT slave controller ESC A controller for EtherCAT slave communications. EtherCAT slave information ESI An XML file that contains setting information for an EtherCAT slave. EtherCAT state machine ESM An EtherCAT communications state machine. EtherCAT Technology Group ETG The ETG is a global organization in which OEM, end users, and technol-

I/O map settings --- Settings that assign variables to I/O ports. Assignment information

I/O port --- A logical interface that is used by the CPU Unit to exchange data with an

I/O refreshing --- Cyclic data exchange with external devices that is performed with prede-

index --- Address of an object within an application process. network configuration information --- The EtherCAT network configuration information held by the EtherCAT

NX bus --- The NX-series internal bus. object --- An abstract representation of a particular component within a device,

object dictionary OD Data structure that contains description of data type objects, communi-

Operational --- A state in EtherCAT communications where SDO communications and

PDO communications --- An acronym for process data communications. Pre-Operational --- A state in EtherCAT communications where only SDO communications

primary periodic task --- The task with the highest priority. process data --- Collection of application objects designated to be downloaded cyclically

process data communications --- One type of EtherCAT communications in which process data objects

Abbreviation

a slave.

CoE A CAN application protocol service implemented on EtherCAT.

and supports higher-layer protocols.

a network between NX Units and a host network master.

clock that is shared by all slaves in the network. The time that is based on this distributed clock is called the DC time.

consistency between similar devices of the same device type.

CAT slave is allocated. Slave process data is accessed by directly reading and writing device variables from user applications on the NJ-series CPU Unit.

the EtherCAT master.

ogy providers join forces to support and promote the further technology development.

between I/O ports and variables.

external device (slave or Unit).

termined memory addresses.

master.

which consists of data, parameters, and methods.

cation objects and application objects.

I/O are possible.

are possible with the slaves, i.e., no I/O can be performed.

or acyclically for the purpose of measurement and control.

(PDOs) are used to exchange information cyclically and in realtime. This is also called PDO communications.

Description

NX-series Digital I/O Unit User’s Manual (W521)

Page 31

Terminology

Term

process data object PDO A structure that describes the mappings of parameters that have one or

receive PDO RxPDO A process data object received by an EtherCAT slave. Safe-Operational --- A state in EtherCAT communications where only SDO communications

SDO communications --- One type of EtherCAT communications in which service data objects

service data object SDO CoE asynchronous mailbox communications where all objects in the

Slave Information Interface SII Slave information that is stored in non-volatile memory in the slave. Slave Terminal --- A building-block remote I/O terminal to which a Communications Cou-

subindex --- Sub-address of an object within the object dictionary. Sync0 --- A signal that gives the interrupt timing based on the distributed clock

Sync Manager SM Collection of control elements to coordinate access to concurrently used

task period --- The interval at which the primary periodic task or a periodic task is exe-

transmit PDO TxPDO A process data object sent from an EtherCAT slave.

Abbreviation

Description

more process data entities.

and reading input data from slaves are possible. Outputs from slaves are not performed.

(SDOs) are used to transmit information whenever required.

object dictionary can be read and written.

pler Unit and NX Units are mounted

(DC) in EtherCAT communications. The slaves execute controls according to this interrupt timing.

objects.

cuted.

NX-series Digital I/O Unit User’s Manual (W521)

Page 32

Revision History

Cat. No.

W521-E1-04

Revision code

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 Date Revised content

01 April 2013 Original production 02 June 2013 Added time stamp refreshing, models on time stamp refreshing and cor-

03 September 2013 Added information on the NX-IA3117/OC2733 and corrected mistakes. 04 July 2014 Added information on

rected mistakes.

NX-ID5142-5/ID6142-5/OD5121-5/OD5256-5/OD6121-5/OD6256-5/MD 6121-5/MD6256-5 and corrected mistakes.

NX-series Digital I/O Unit User’s Manual (W521)

Page 33

Features and System Configuration

Specifications

Part Names and Functions

Installation and Wiring

Index

I/O Refreshing

Appendices

Digital Output Units

Digital Input Units

Digital Mixed I/O Units

Troubleshooting

Inspection and Maintenance

Sections in this Manual

NX-series Digital I/O Unit User’s Manual (W521)

Page 34

Sections in this Manual

NX-series Digital I/O Unit User’s Manual (W521)

Page 35

Features and System Configuration

This section describes NX system configuration and the types of Digital I/O Units.

1-1 Features and Types of Digital I/O Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1-1-1 Digital I/O Unit Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1-1-2 Digital I/O Unit Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1-2 System Configuration of Slave Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-2-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-2-2 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-3 Model List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1-3-1 Model Notation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1-3-2 Digital Input Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1-3-3 Digital Output Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11

1-3-4 Digital Mixed I/O Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

1-4 List of Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1-4-1 Digital Input Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1-4-2 Digital Output Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

1-4-3 Digital Mixed I/O Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

1-5 Support Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

NX-series Digital I/O Unit User’s Manual (W521)

1 - 1

Page 36

1 Features and System Configuration

External output device (Output)

Workpiece

Sensor (Input)

Fixed interval

When input changes When output is made

1-1 Features and Types of Digital I/O

Units

This section describes features and types of Digital I/O Units.

1-1-1 Digital I/O Unit Features

The Digital I/O Units are NX Units to process inputs and outputs of digital signals (ON/OFF signals).

The NX-series Digital I/O Units have the following features.

Synchronous I/O with Refresh Cycle of the NX Bus

When the EtherCAT Coupler Unit is used together with NX Units that support synchronous I/O refreshing, the I/O control of multiple NX Units can be synchronized at the time to synchronize with the refresh cycle of the NX bus.

This provides an accurate I/O control because it suppresses jitter in the I/O timing of multiple NX Units.

Controlling Outputs at Fixed Intervals After Inputs Change

You can use EtherCAT Coupler Units with NX Units that support input refreshing with input changed time and with other NX Units that support output refreshing with specified time stamp to control the outputs at fixed intervals after the sensor inputs change.

Simple I/O Wiring with a Screwless Clamping Terminal Block

The terminal block is a screwless clamping terminal block.

1 - 2

You can connect the wires simply by pushing the ferrules into the terminals. The amount of wiring work is reduced without requiring the use of screws.

NX-series Digital I/O Unit User’s Manual (W521)

Page 37

1-1-2 Digital I/O Unit Types

The types of Digital I/O Units are as follows.

Type Purpose

Digital Input Units These are Units with functionality to process input of digital signals from sensors

and other connected external devices.

Digital Output Units These are Units with functionality to process output of digital signals to relays and

other connected external devices.

Digital Mixed I/O Units These are Units with functionality to process input of digital signals from connected

external devices as well as functionality to process output of digital signals to connected external devices.

Refer to 1-3 Model List on page 1-6 for details on Digital I/O Unit models and 1-4 List of Functions on page 1-14 for details on their functions.

1 Features and System Configuration

1-1 Features and Types of Digi-

tal I/O Units

1-1-2 Digital I/O Unit Types

NX-series Digital I/O Unit User’s Manual (W521)

1 - 3

Page 38

1 Features and System Configuration

1-2 System Configuration of Slave Termi-

nals

1-2-1 Overview

The Slave Terminal is a building-block remote I/O slave that is created by mounting a group of NX Units to a Communications Coupler Unit.

The NX Units can be flexibly combined with a Communications Coupler Unit to achieve the optimum remote I/O slave for the application with less wiring, less work, and less space.

1-2-2 System Configuration

The following figure shows an example of the system configuration when an EtherCAT Coupler Unit is used as a Communications Coupler Unit.

(E) Sysmac Studio

Support Software

Connection to peripheral USB port or built-in EtherNet/IP port on NJ-series CPU Unit

.xml

(F) ESI files

(E) Sysmac Studio

Support Software

(A) EtherCAT master

NJ-series CPU Unit or master from another manufacturer

Built-in EtherCAT port

(G) Communications cable

Ethernet cables

Peripheral USB port

• EtherCAT Slave Terminal

(B) NX Series

EtherCAT Coupler Unit NX-ECC201/ECC202

1 - 4

.xml

(F) ESI files

Connection to peripheral USB port on EtherCAT Coupler Unit

(D) End Cover

NX-series Digital I/O Unit User’s Manual (W521)

Page 39

1 Features and System Configuration

1-2 System Configuration of

Let-

ter

(A)

EtherCAT master

(B) EtherCAT Coupler Unit The EtherCAT Coupler Unit serves as an interface for process data communi-

(D) End Cover The End Cover is attached to the end of the Slave Terminal. (E) Sysmac Studio Support

Software

(F) ESI (EtherCAT Slave

Information) file

(G) Communications cable Use a double-shielded cable with aluminum tape and braiding of Ethernet cat-

*1. An EtherCAT Slave Terminal cannot be connected to any of the OMRON CJ1W-NC81/82 Position Control

Units even though they can operate as EtherCAT masters.

Item Description

The EtherCAT master manages the network, monitors the status of slaves, and exchanges I/O data with slaves.

cations on the EtherCAT network between the NX Units and the EtherCAT master.

The I/O data for the NX Units is accumulated in the EtherCAT Coupler Unit and then all of the data is exchanged with the EtherCAT master at the same time.

The EtherCAT Coupler Unit can also perform message communications (SDO communications) with the EtherCAT master.

The NX Units perform process data communications with the EtherCAT master through the EtherCAT Coupler Unit.

The Sysmac Studio runs on a personal computer and it is used to configure the EtherCAT network and EtherCAT Slave Terminal, and to program, monitor, and troubleshoot the Controllers.

You can connect the computer, in which the Sysmac Studio is installed, to the peripheral USB port or built-in EtherNet/IP port on an NJ-series CPU Unit to set up the EtherCAT Slave Terminal. Or you can connect it to the peripheral USB port on the EtherCAT Coupler Unit to set up the EtherCAT Slave Terminal.

The ESI file contains information that is unique to the EtherCAT Slave Terminal in XML format. You can load the ESI file into the Sysmac Studio to easily allocate Slave Terminal process data and configure other settings.

The ESI files for OMRON EtherCAT slaves are already installed in the Sysmac Studio. You can update the Sysmac Studio to get the ESI files for the most recent models.

egory 5 (100Base-TX) or higher, and use straight wiring.

Slave Terminals

1-2-2 System Configuration

NX-series Digital I/O Unit User’s Manual (W521)

1 - 5

Page 40

1 Features and System Configuration

Number of points

2 : 2 points 3 : 4 points 4 : 8 points 5 : 16 points 6 : 32 points, or 16 points each for inputs and outputs

I/O type

For both NPN/PNP

−

NPN

PNP

−

For both NPN/PNP, NPN

For both NPN/PNP, PNP

−

NPN

PNP

−

N.O.

N.O. + N.C.

Unit type

ID : DC input IA : AC input OD : Transistor output OC : Relay output MD : DC input/Transistor output

NX - -       - - 

Number Inputs Outputs Mixed I/O (Input, Output)

Other specifications Refer to Other specifications on the next page.

External connection terminals

Screwless clamping terminal block

MIL connector

None

-5

External connection terminalsNumber

1-3 Model List

1-3-1 Model Notation

The Digital I/O Unit models are assigned based on the following rules.

1 - 6

NX-series Digital I/O Unit User’s Manual (W521)

Page 41

1 Features and System Configuration

Other Specifications

 Digital Input Units

ON/OFF response

time

Num

Input voltage

ber

12 to 24 VDC

or 240 VAC

24 VDC

43  Yes Ye s  44  Yes  Ye s

*1. Free-Run refreshing

*2. Synchronous I/O refreshing

Exceeds

1 μs

Yes  Yes 

1 μs max.

Free-Run refreshing

Switching Synchronous I/O

refreshing

 Digital Output Units

I/O refreshing method

only

and Free-Run

Input refreshing with input

changed time only

1-3 Model List

1-3-1 Model Notation

ON/OFF response

time

Free-Run refresh-

Num

ber

21 33 2 A Yes  Yes  53 54  Yes  Yes  56 Yes  Yes  Yes 57  Yes Ye s  Ye s 58  Yes  Yes Ye s

*1. Free-Run refreshing

*2. Synchronous I/O refreshing

Rated volt-

age

12 to 24 VDC or 240 VAC

24 VDC 0.5 A

Load

current

0.5 A Yes  Ye s 

Exceed

s 1 μs

 Yes Ye s 

1 μs

max.

refreshing

Free-Run refresh-

I/O refreshing method

ing *1 only

Switching Syn-

chronous I/O

and

ing

Output refresh-

ing with speci-

fied time stamp

only

Other func-

tions

Load

short-circuit

protection

NX-series Digital I/O Unit User’s Manual (W521)

1 - 7

Page 42

1 Features and System Configuration

 Digital Mixed I/O Units

Input section Output section

Num

ber

Rated input

voltage

24 VDC

Refer to Section 5 I/O Refreshing for details on the I/O refreshing method.

Rated

volt-

age

12 to 24 VDC

24 VDC

Load

current

0.5 A

ON/OFF response time

I/O refreshing

Exceeds

1 μs

Yes 

Yes 

1 μs max.

method

Switching Synchronous I/O refreshing and Free-Run refreshing

Other func-

tions Load

short-circuit

protection

Yes

1 - 8

NX-series Digital I/O Unit User’s Manual (W521)

Page 43

1 Features and System Configuration

1-3-2 Digital Input Units

This section shows the specifications for Digital Input Units.

Refer to A-1-2 Digital Input Units on page A-5 for details on the specifications of individual Digital Input Units.

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

Num

ber

Model

NX-ID3317

NX-ID3343

NX-ID3344

NX-ID3417

NX-ID3443

NX-ID3444

NX-ID4342

NX-ID4442

NX-ID5342

NX-ID5442

Internal I/O

poin

4 point s

8 point s

16 point s

common

NPN

PNP

NPN

PNP P. A-14

NPN P. A-15

PNP P. A-16

Rated input

voltage

12 to 24 VDC

24 VDC

12 to 24 VDC

24 VDC

I/O refreshing

method

Switching Synchronous I/O refreshing and Free-Run refreshing

Input refreshing with input changed time only

Switching Synchronous I/O refreshing and Free-Run refreshing

Input refreshing with input changed time only

Switching Synchronous I/O refreshing and Free-Run refreshing

ON/OFF response

time

20 μs max./400 μs max.

100 ns max./100 ns max.

20 μs max./400 μs max.

100 ns max./100 ns max.

20 μs max./400 μs max.

1-3 Model List

1-3-2 Digital Input Units

Reference

P. A -7

P. A -8

P. A -9

P. A -1 0

P. A -11

P. A -1 2

P. A -1 3

DC Input Units (MIL Connector, 30 mm Width)

Num

ber

Model

NX-ID5142-5

NX-ID6142-5

NX-series Digital I/O Unit User’s Manual (W521)

poin

16 point s

32 point s

Internal I/O

common

For both NPN/PNP

Rated input

voltage

24 VDC

24 VDC P. A-19

I/O refreshing

method

Switching Synchronous I/O refreshing and Free-Run refreshing

ON/OFF response

time

s max./400 μs

20 max.

Reference

P. A -1 7

1 - 9

Page 44

1 Features and System Configuration

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

Num

ber

Model

NX-IA3117

poin

4 point s

Rated input voltage

200 to 240 VAC, 50/60 Hz (170 to 264 VAC, 3 Hz)

I/O refreshing

method

Free-Run refreshing

ON/OFF response

time

10 ms max./40 ms max.

Reference

P. A -2 2

1 - 10

NX-series Digital I/O Unit User’s Manual (W521)

Page 45

1 Features and System Configuration

1-3-3 Digital Output Units

This section shows the specifications for Digital Output Units.

Refer to A-1-3 Digital Output Units on page A-24 for details on the specifications of individual Digital Output Units.

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

Model

NX-OD2154

NX-OD2258

NX-OD3121

NX-OD3153

NX-OD3256

NX-OD3257

NX-OD4121

NX-OD4256

NX-OD5121

NX-OD5256

Num-

ber of

points

2 points

4 points

8 points

16 points

Internal I/O

common

NPN

PNP P. A-28

NPN

PNP

NPN

PNP

NPN

PNP

Maximum

value of

load cur-

rent

0.5 A/point, 1 A/Unit

0.5 A/point, 2 A/Unit

0.5 A/point, 4 A/Unit

Rated volt-

age

24 VDC

12 to 24 VDC

24 VDC

12 to 24 VDC

24 VDC

12 to 24 VDC

24 VDC

I/O refreshing method

Output refreshing with specified time stamp only

Switching Synchronous I/O refreshing and Free-Run refreshing

ON/OFF

response

time

300 ns max./300 ns max.

0.1 ms max./0.8 ms max.

300 ns max./300 ns max.

0.5 ms max./1.0 ms max.

300 ns max./300 ns max.

0.1 ms max./0.8 ms max.

0.5 ms max./1.0 ms max.

0.1 ms max./0.8 ms max.

0.5 ms max./1.0 ms max.

1-3 Model List

1-3-3 Digital Output Units

Refer-

ence

P. A -2 6

P. A -2 9

P. A -3 0

P. A -3 1

P. A -3 2

P. A -3 4

P. A -3 5

P. A -3 6

P. A -3 7

NX-series Digital I/O Unit User’s Manual (W521)

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Page 46

1 Features and System Configuration

Transistor Output Units (MIL Connector, 30 mm Width)

Num-

Model

NX-OD5121-5

NX-OD5256-5 PNP 24 VDC

NX-OD6121-5

NX-OD6256-5 PNP 24 VDC

ber of points

16 points

32 points

Internal I/O

common

NPN

Maximum

value of

load cur-

rent

0.5 A/point, 2 A/Unit

0.5 A/point, 2 A/common, 4 A/Unit

Rated volt-

age

12 to 24 VDC

I/O refresh-

ing method

Switching Synchronous I/O refreshing and Free-Run refreshing

ON/OFF

response

time

0.1 ms max./0.8 ms max.

0.5 ms max./1.0 ms max.

0.1 ms max./0.8 ms max.

0.5 ms max./1.0 ms max.

P. A - 3 8

P. A - 4 0

P. A - 4 1

P. A - 4 3

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

Model

NX-OC2633

NX-OC2733

Number of points

2 points

Relay type

N.O.

N.O. + N.C. P. A-47

Maximum switching

capacity

250 VAC/2 A (cosΦ = 1), 250 VAC/2 A (cosΦ = 0.4), 24 VDC/2 A, 4 A/Unit

I/O refreshing method

Free-Run refreshing

ON/OFF

response

time

15 ms max./15 ms max.

P. A - 4 5

Refer-

ence

Refer-

ence

1 - 12

NX-series Digital I/O Unit User’s Manual (W521)

Page 47

1 Features and System Configuration

1-3-4 Digital Mixed I/O Units

This section shows the specifications for Digital Mixed I/O Units.

Refer to A-1-4 Digital Mixed I/O Units on page A-49 for details on the specifications of individual Mixed I/O Units.

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

Model

NX-MD6121-5

NX-MD6256-5

Num-

ber of

points

Outputs: 16 points

Inputs: 16 points

Internal I/O

common

Outputs: NPN

Inputs: For both NPN/PNP

Outputs: PNP

Inputs: For both NPN/PNP

Maximum

value of

load cur-

rent

0.5 A/point, 2 A/Unit

Rated volt-

age

Outputs: 12 to 24 VDC

Inputs: 24 VDC

Outputs: 24 VDC

Inputs: 24 VDC

I/O refreshing method

Switching Synchronous I/O refreshing and Free-Run refreshing

ON/OFF

response

time

Outputs: 0.1 ms max./0.8 ms max.

Inputs: 20 μs max./400 μs max. Outputs: 0.5 ms max./1.0 ms max.

Inputs: 20 μs max./400 μs max.

1-3 Model List

1-3-4 Digital Mixed I/O Units

Refer-

ence

P. A -5 1

P. A -5 5

NX-series Digital I/O Unit User’s Manual (W521)

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Page 48

1 Features and System Configuration

1-4 List of Functions

This section provides an overview of functions that the Digital I/O Units have.

Refer to the specifications of each model in A-1 Data Sheet on page A-2 for details on the functions.

1-4-1 Digital Input Units

Function name Description Reference

Free-Run Refreshing With this I/O refreshing method, the refresh cycle of the NX

bus and the I/O refresh cycles of the NX Units are asynchro-

nous. Synchronous I/O Refreshing

Time Stamp Refreshing With this I/O refreshing method, the NX Units record the DC

Input refreshing with input changed time

Input Filter This function eliminates the chattering or the noises from input

With this I/O refreshing method, the timing to read inputs or to

refresh outputs is synchronous on a fixed interval between

more than one NX Unit on more than one Slave Terminal.

times when inputs change or perform outputs at specified DC

times. These times are asynchronous to the NX bus refresh

cycles.

Data exchange between the NX Units and EtherCAT Coupler

Unit are performed cyclically on the NX bus refresh cycles.

With this I/O refreshing method, the Input Units record the DC

times when inputs changed.

signals.

It is used to prevent the error reading due to the noises. You

can set the filter time constant.

5-2-4 Free-Run Refreshing on

page 5-5

5-2-5 Synchronous Input Refreshing on

page 5-9

5-2-7 Time Stamp Refreshing on

page 5-18

5-2-8 Input Refreshing with Input Changed Time on page 5-19

6-4-2 Input Filter

on page 6-14

1 - 14

NX-series Digital I/O Unit User’s Manual (W521)

Page 49

1-4-2 Digital Output Units

Function name Description Reference

Free-Run Refreshing With this I/O refreshing method, the refresh cycle of the NX

bus and the I/O refresh cycles of the NX Units are asynchronous.

Synchronous I/O Refreshing

Time Stamp Refreshing With this I/O refreshing method, the NX Units record the DC

Output refreshing with specified time stamp

Load Rejection Output Setting

Load Short-circuit Protection

With this I/O refreshing method, the timing to read inputs or to refresh outputs is synchronous on a fixed interval between more than one NX Unit on more than one Slave Terminal.

times when inputs change or perform outputs at specified DC times. These times are asynchronous to the NX bus refresh cycles.

Data exchange between the NX Units and EtherCAT Coupler Unit are performed cyclically on the NX bus refresh cycles. With this I/O refreshing method, the Output Units refresh outputs at specified DC times.

A function that performs the preset output operation when the Digital Output Unit cannot receive output data due to a host error on the Communications Coupler Unit or an error on the NX bus.

A function in which the output will turn OFF to protect the output circuit when an overload or load short-circuit occurs due to a failure of the connected external devices.

1 Features and System Configuration

5-2-4 Free-Run Refreshing on

page 5-5

5-2-6 Synchronous Output Refreshing on

page 5-13

5-2-7 Time Stamp Refreshing on

page 5-18

5-2-9 Output Refreshing with Specified Time Stamp on page

5-24

7-4-2 Load Rejection Output Setting

on page 7-12

7-4-3 Load Short-circuit Protection on page

7-18

1-4 List of Functions

1-4-2 Digital Output Units

NX-series Digital I/O Unit User’s Manual (W521)

1 - 15

Page 50

1 Features and System Configuration

1-4-3 Digital Mixed I/O Units

Function name Description Reference

Free-Run Refreshing With this I/O refreshing method, the refresh cycle of the NX

bus and the I/O refresh cycles of the NX Units are asynchro-

nous. Synchronous I/O Refresh-

ing

Input Filter This function eliminates the chattering or the noises from input

Load Rejection Output Setting

Load Short-circuit Protection

With this I/O refreshing method, the timing to read inputs or to

refresh outputs is synchronous on a fixed interval between

more than one NX Unit on more than one Slave Terminal.

signals.

It is used to prevent the error reading due to the noises. You

can set the filter time constant.

A function that performs the preset output operation when the

Digital Output Unit cannot receive output data due to a host

error on the Communications Coupler Unit or an error on the

NX bus.

A function in which the output will turn OFF to protect the out-

put circuit when an overload or load short-circuit occurs due to

a failure of the connected external devices.

5-2-4 Free-Run Refreshing on

page 5-5

5-2-5 Synchronous Input Refreshing on

page 5-9 6-4-2 Input Filter

on page 6-14

7-4-2 Load Rejection Output Setting

on page 7-12

7-4-3 Load Short-circuit Protection on page

7-18

1 - 16

NX-series Digital I/O Unit User’s Manual (W521)

Page 51

1-5 Support Software

Refer to A-7 Version Information on page A-105 for information on the Support Software that can per- form the settings of the Slave Terminal.

1 Features and System Configuration

1-5 Support Software

NX-series Digital I/O Unit User’s Manual (W521)

1 - 17

Page 52

1 Features and System Configuration

1 - 18

NX-series Digital I/O Unit User’s Manual (W521)

Page 53

Specifications

This section describes the general specifications and individual specifications of Digital I/O Units.

2-1 General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2-2 Individual Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

NX-series Digital I/O Unit User’s Manual (W521)

2 - 1

Page 54

2 Specifications

2-1 General Specifications

General specifications of Digital I/O Units are shown below.

Item Specification

Enclosure Grounding methods

Ambient operating temperature

Ambient operating humidity

Atmosphere Must be free from corrosive gases. Ambient storage tempera-

ture Altitude 2,000 m max. Pollution degree Pollution degree 2 or less: Conforms to JIS B 3502 and IEC 61131-2.

Operating environment

Applicable standards

*1. Relay Output Unit specifications depend on the model. Refer to A-1 Data Sheet on page A-2 for details.

*2. Varies with NX Unit Models. Refer to A-1 Data Sheet on page A-2 for the specifications of individual NX Units.

*3. Refer to the OMRON website (www.ia.omron.com) or ask your OMRON representative for the most recent ap-

plicable standards for each model.

Noise immunity Conforms to IEC 61000-4-4, 2 kV (power supply line) Overvoltage category Category II: Conforms to JIS B 3502 and IEC 61131-2. EMC immunity level Zone B Vibration resistance

Shock resistance

Insulation resistance Dielectric strength

Mounted in a panel Ground of 100 Ω or less

0 to 55C

10 to 95% RH (with no icing or condensation)

-25 to 70C (with no icing or condensation)

Conforms to IEC 60068-2-6. 5 to 8.4 Hz with amplitude of 3.5 mm,

8.4 to 150 Hz, acceleration of 9.8 m/s 100 min each in X, Y, and Z directions (10 sweeps of 10 min each = 100 min total)

Conforms to IEC 60068-2-27, 147 m/s2, 3 times each in X, Y, and Z directions

cULus: Listed (UL508), ANSI/ISA 12.12.01, EC: EN 61131-2, C-Tick, KC: KC Registration, NK, LR

2 - 2

NX-series Digital I/O Unit User’s Manual (W521)

Page 55

2 Specifications

2-2 Individual Specifications

Refer to A-1 Data Sheet on page A-2 for the specifications of individual Digital I/O Units.

2-2 Individual Specifications

NX-series Digital I/O Unit User’s Manual (W521)

2 - 3

Page 56

2 Specifications

2 - 4

NX-series Digital I/O Unit User’s Manual (W521)

Page 57

Part Names and Functions

This section describes the names and functions of the Digital I/O Unit parts.

3-1 Part Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3-1-1 Screwless Clamping Terminal Block Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3-1-2 Connector Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3-2 Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3-2-1 TS Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11

3-2-2 IN/OUT Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

NX-series Digital I/O Unit User’s Manual (W521)

3 - 1

Page 58

3 Part Names and Functions

3-1 Part Names

This section describes the names and functions of the Digital I/O Unit parts.

3-1-1 Screwless Clamping Terminal Block Type

NX Units (12 mm Width)

(C)(D)

(B)

(A)

(H)

Let-

ter

(A) Marker attachment loca-

tions

(B) NX bus connector This connector is used to connect each Unit. (C) Unit hookup guides These guides are used to connect two Units. (D) DIN Track mounting hooks These hooks are used to mount the NX Unit to a DIN Track. (E) Protrusions for removing

the Unit

(F) Indicators The indicators show the current operating status of the Unit.

(G) Terminal block The terminal block is used to connect external devices.

(H) Unit specifications The specifications of the Unit are given.

Name Function

(C)

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 4-1-2 Attaching Markers on page 4-4

The protrusions to hold when removing the Unit.

Refer to 3-2 Indicators on page 3-9

The number of terminals depends on the type of Unit.

(E)

(F)

(G)

(C)(E)

(B)

3 - 2

NX-series Digital I/O Unit User’s Manual (W521)

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3 Part Names and Functions

Terminal Blocks

There are two models of Screwless Clamping Terminal Blocks: NX-TB2 and NX-TB1. Each model has three types of terminal blocks: 8-terminal type, 12-terminal type, and 16-terminal type.

 NX-TB2

3-1 Part Names

(A)

8-terminal type

 NX-TB1

12-terminal type

16-terminal type

(B)

(C)

3-1-1 Screwless Clamping Terminal Block Type

(A)

8-terminal type 16-terminal type12-terminal type

NX-series Digital I/O Unit User’s Manual (W521)

(B)

(C)

3 - 3

Page 60

3 Part Names and Functions

Additional Information

Let-

ter

(A) Terminal number indi-

cations

(B) Release holes Insert a flat-blade screwdriver into these holes to connect and remove the

Name Function

Terminal numbers for which A and B indicate the column, and 1 to 8 indicate the line are displayed.

The terminal number is a combination of column and line, i.e. A1 to A8 and B1 to B8.

The terminal number indications are the same regardless of the number of terminals on the terminal block.

wires.

The NX-TB2 and NX-TB1 Terminal Blocks have different terminal current capacities. The NX-TB2 has 10 A and NX-TB1 has 4 A.

To differentiate between the two models of Terminal Blocks, use the terminal number column indications. The Terminal Block with white letters on a dark background is the NX-TB2.

You can mount either NX-TB1 or NX-TB2 Terminal Blocks to the Units that the current capacity specification of the terminals is 4 A or less.

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.

• Each Digital I/O Unit is compatible with only one of three types of terminal blocks. You cannot use a terminal block with a number of terminals that differs from the specifications for a particular Unit.

• The 8-terminal type and 12-terminal type do not have terminal holes and release holes for following terminal numbers.

8-terminal type: A2, A4, A6, A8, B2, B4, B6, and B8

12-terminal type: A7, A8, B7, and B8

3 - 4

NX-series Digital I/O Unit User’s Manual (W521)

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3 Part Names and Functions

Precautions for Correct Use

 Applicable Terminal Blocks for Each Unit Model

The following indicates the Terminal Blocks that are applicable to each Unit.

Terminal Block

Unit model number

NX-ID3 NX-TBA121 12 Not provided 4 A

NX-ID4 NX-TBA161 16 4 A NX-ID5 NX-TBA162 10 A NX-IA3117 NX-TBA081 8 4 A NX-OD2 NX-TBA082 10 A NX-OD3 NX-TBA121 12 4 A

NX-OD4 NX-TBA161 16 4 A NX-OD5 NX-TBA162 10 A NX-OC2 NX-TBA081 8 4 A

Model

NX-TBA122 10 A

NX-TBA082 10 A

Number of

terminals

Ground terminal Current capacity

3-1 Part Names

3-1-1 Screwless Clamping Terminal Block Type

You can mount either NX-TB1 or NX-TB2 Terminal Blocks to the Units that the current capacity specification of the terminals is 4 A or less.

However, even if you mount the NX-TB2 Terminal Block, the current specification does not change because the current capacity specification of the terminals on the Units is 4 A or less.

Refer to A-6 List of Screwless Clamping Terminal Block Models on page A-104 for information on the models of Terminal Blocks.

NX-series Digital I/O Unit User’s Manual (W521)

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Page 62

3 Part Names and Functions

(C)

(E)

(C)

(D)

(H)

(G)

(F)

(C)

(A)

(E)

(B)

3-1-2 Connector Types

NX Units (30 mm Width)

 Units with MIL Connectors (1 Connector with 20 Terminals)

Let-

ter

(A) Marker attachment loca-

tion

the Unit

(F) Indicators The indicators show the current operating status of the Unit.

(G) Connectors The connectors are used to connect to external devices. (H) Unit specifications The specifications of the Unit are given.

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 4-1-2 Attaching Markers on page 4-4.

The protrusions to hold when removing the Unit.

Refer to 3-2 Indicators on page 3-9.

3 - 6

NX-series Digital I/O Unit User’s Manual (W521)

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3 Part Names and Functions

(C)

(E)

(C)

(D)

(H)

(G)

(F)

(C)

(A)

(E)

(B)

 Units with MIL Connectors (1 Connector with 40 Terminals)

3-1 Part Names

3-1-2 Connector Types

Let-

ter

(A) Marker attachment loca-

tion

the Unit

(F) Indicators The indicators show the current operating status of the Unit.

(G) Connectors The connectors are used to connect to external devices. (H) Unit specifications The specifications of the Unit are given.

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 4-1-2 Attaching Markers on page 4-4.

The protrusions to hold when removing the Unit.

Refer to 3-2 Indicators on page 3-9.

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3 Part Names and Functions

(C)

(E)

(C)

(D)

(H)

(G)

(F)

(C)

(A)

(E)

(B)

 Units with MIL Connectors (2 Connectors with 20 Terminals)

Let-

ter

(A) Marker attachment loca-

tion

the Unit

(F) Indicators The indicators show the current operating status of the Unit.

(G) Connectors The connectors are used to connect to external devices. (H) Unit specifications The specifications of the Unit are given.

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 4-1-2 Attaching Markers on page 4-4.

The protrusions to hold when removing the Unit.

Refer to 3-2 Indicators on page 3-9.

3 - 8

NX-series Digital I/O Unit User’s Manual (W521)

Page 65

3-2 Indicators

2-point type 4-point type

8-point type 16-point type

(A)

(B)

16-point type

16-point + 16-point type

(Mixed I/O Units)

32-point type

(A)

(B)

There are the indicators to show the current operating status of the Unit or the signal I/O status on the Digital I/O Units.

The following indicator patterns are available depending on width of the Unit and the number of I/O points.

 NX Units (12 mm Width)

3 Part Names and Functions

3-2 Indicators

 NX Units (30 mm Width)

NX-series Digital I/O Unit User’s Manual (W521)

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Page 66

3 Part Names and Functions

Let-

ter

(A) Model number indications The model numbers of the NX Unit are displayed.

(B) Indicators The indicators show the current operating status of the NX Unit or the signal

Name Function

(Example) "ID3317" in the case of NX-ID3317

The NX Units are separated in the following color depending on the type of inputs and outputs.

• Digital Input Unit: Orange

• Digital Output Unit: Yellow

• Digital Mixed I/O Unit: White

I/O status.

The following section describes the specifications of each indicator.

3 - 10

NX-series Digital I/O Unit User’s Manual (W521)

Page 67

3-2-1 TS Indicator

This indicator shows the current status of the Digital I/O Unit and its communications status with the Communications Coupler Unit.

3 Part Names and Functions

3-2 Indicators

The meanings of light statuses are described as follows:

Color Status Description

Green Lit The Unit is operating normally.

The Unit is ready for I/O refreshing.

Flashing at 2-s intervals.

Red Lit A hardware failure, WDT error, or other fatal error that is common to

Flashing at 1-s intervals.

 Not lit • No Unit power supply

• Initializing

• Restarting is in progress for the Unit.

• Downloading

all I/O Units occurred.

A communications error or other NX bus-related error that is common to all I/O Units occurred.

• Restarting is in progress for the Slave Terminal.

• Waiting for initialization to start

3-2-1 TS Indicator

NX-series Digital I/O Unit User’s Manual (W521)

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3 Part Names and Functions

This indicator shows the signal I/O status of each terminal of the Digital I/O Units.

For Digital Mixed I/O Units, the indicator shows as follows.

OUT indicator

IN indicator

3-2-2 IN/OUT Indicator

Color Status Description

Yellow Lit Digital I/O is ON

- Not lit Digital I/O is OFF

3 - 12

NX-series Digital I/O Unit User’s Manual (W521)

Page 69

Installation and Wiring

This section describes how to install the NX Units, the types of power supplies used in the Slave Terminal, their wiring methods, and how to wire the NX Units.

4-1 Installing NX Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4-1-1 Installing NX Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

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

4-1-3 Removing NX Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4-1-4 Installation Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

4-2 Wiring the Power Supply to the Slave Terminal . . . . . . . . . . . . . . . . . . . . . 4-8

4-2-1 Power Supply Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

4-2-2 Supplying Each Power Supply and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

4-2-3 Calculating the Total Current Consumption from I/O Power Supply . . . . . . . . .4-11

4-2-4 Power Supply-related Units for the NX-series . . . . . . . . . . . . . . . . . . . . . . . . 4-12

4-3 Wiring the Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

4-3-1 Wiring to the Screwless Clamping Terminal Block . . . . . . . . . . . . . . . . . . . . . 4-15

4-3-2 Wiring to Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32

4-3-3 Checking the Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

4-4 Wiring Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35

4-4-1 Wiring the Input Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35

4-4-2 Precautions when Wiring to the Output Units . . . . . . . . . . . . . . . . . . . . . . . . . 4-47

NX-series Digital I/O Unit User’s Manual (W521)

4 - 1

Page 70

4 Installation and Wiring

Precautions for Correct Use

4-1 Installing NX Units

This section describes how to install NX Units.

Refer to the user's manual of the Communications Coupler Unit for information on preparations of installation and installation in a control panel.

4-1-1 Installing NX Units

This section describes how to mount two NX Units to each other.

Always turn OFF the power supply before you mount NX Units.

Always mount NX Units one at a time. If you attempt to mount multiple NX Units that are already connected together, the connections between the NX Units may separate from each other and fall.

• Do not apply labels or tape on the NX Units. When the Unit is installed or removed, adhesive or scrap may adhere to the pins of the NX bus connector, which may cause malfunctions.

• Do not write with ink or soil within the prohibited region that is shown in the following figure. When the Unit is installed or removed, ink or dirt may adhere to the pins of the NX bus connector, which may cause malfunctions in the Slave Terminal.

Prohibited region

(shaded portion)

• When you install an NX Unit, do not touch or bump the pins in the NX bus connector.

• When you handle an NX Unit, be careful not to apply any stress to the pins in the NX bus connector. If you install an NX Unit and turns ON the power supply when the pins in the NX bus connector are deformed, a contact defect may cause malfunctions.

4 - 2

NX-series Digital I/O Unit User’s Manual (W521)

Page 71

4 Installation and Wiring

Additional Information

Unit hookup guides

1 From the front of the previously mounted NX Unit, engage the Unit hookup guides on a new Unit

with the Unit hookup guides on the previously mounted NX Unit.

2 Slide the NX Unit in on the hookup guides.

4-1 Installing NX Units

3 Press the NX Unit with a certain amount of force against the DIN Track until you hear the DIN

Track mounting hook lock into place.

When you mount the NX Unit, it is not necessary to release the DIN track mounting hook on the NX Unit.

After you mount the NX Unit, make sure that it is locked to the DIN Track.

4-1-1 Installing NX Units

NX-series Digital I/O Unit User’s Manual (W521)

• Normally, it is not necessary to release the DIN track mounting hook when you mount the NX Unit. However, if you mount the NX Unit on a DIN Track that is not a recommended DIN Track, the DIN track mounting hook may not lock correctly. If that happens, first unlock the DIN track mounting hook, mount the NX Unit to the DIN Track, then lock the DIN track mounting hook.

• Refer to the user's manual of the Communications Coupler Unit for information on how to mount the Communications Coupler Unit, and how to mount the NX Unit to the Communications Coupler Unit.

4 - 3

Page 72

4 Installation and Wiring

A marker that is attached to the NX Unit

A marker that is attached to the terminal block

Marker

Marker attachment location

Marker

Marker attachment location

4-1-2 Attaching Markers

You can attach markers to the NX Units to identify them.

The plastic markers made by OMRON are installed for the factory setting. The ID information can be written on them.

Commercially available markers can also be installed.

Replace the markers made by OMRON if you use commercially available markers now.

The marker attachment locations vary depending on the type of the external connection terminals on the NX Units.

Screwless clamping terminal block NX Unit and terminal block MIL connector NX Unit only

 Installation Method

External connection terminals on NX Units Marker attachment location

Insert the protrusions on the markers into the marker attachment locations.

4 - 4

NX-series Digital I/O Unit User’s Manual (W521)

Page 73

4 Installation and Wiring

Precautions for Safe Use

Flat-blade screwdriver

DIN track mounting hook

 Commercially Available Markers

Commercially available markers are made of plastic and can be printed on with a special printer.

To use commercially available markers, purchase the following products.

Product name

Markers UC1-TMF8 DEK 5/8 Special marker printer UM EN BLUEMARK X1 PrintJet PRO

The markers made by OMRON cannot be printed on with commercially available special printers.

Manufactured by Phoenix Contact Manufactured by Weidmuller

4-1-3 Removing NX Units

Always turn OFF the Unit power supply and I/O power supply before you remove the NX Unit.

1 Use a flat-blade screwdriver to pull up the DIN Track mounting hook on the Unit to remove.

Model number

4-1 Installing NX Units

4-1-3 Removing NX Units

NX-series Digital I/O Unit User’s Manual (W521)

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4 Installation and Wiring

Precautions for Correct Use

Protrusion for removing the Unit

2 Put your fingers on the protrusions for removing multiple NX Units including the Unit to be

removed, then pull out straight forward to remove.

• When removing an NX Unit, remove multiple Units together which include the one you want to remove. If you attempt to remove only one Unit, it is stuck and hard to pull out.

• Do not unlock the DIN track mounting hooks on all of the NX Units at the same time. If you unlock the DIN Track mounting hooks on all of the NX Units at the same time, all of the Units may come off.

4 - 6

NX-series Digital I/O Unit User’s Manual (W521)

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Precautions for Safe Use

4-1-4 Installation Orientation

Orientation is possible in the following six directions.

(A) is the upright orientation and (B) to (F) are other orientations.

4 Installation and Wiring

(A)

(B)

(C)

(E)

(D)

(F)

Upper

Lower

However, there are restrictions on the installation orientation and restrictions to specifications that can result from the Communications Coupler Units and NX Units that are used.

Refer to the user's manuals for the Communications Coupler Units, NX Units and System Units that you will use for details on restrictions.

4-1 Installing NX Units

4-1-4 Installation Orientation

For installation orientations (C) and (D) in the above 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 Track, which may cause malfunctions.

NX-series Digital I/O Unit User’s Manual (W521)

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4 Installation and Wiring

4-2 Wiring the Power Supply to the Slave

Terminal

This section describes how to supply power to the Slave Terminal and wiring.

4-2-1 Power Supply Types

There are the following two types of power supplies that supply power to the Slave Terminal.

Power supply name Description

Unit power supply This is the power supply for generating the NX Unit power supply required for the Slave

Terminal to operate.

This is connected to the Unit power supply terminal on the Communications Coupler Unit or on the Additional NX Unit Power Supply Unit.

The internal power supply circuit in the Communications Coupler Unit or the Additional NX Unit Power Supply Unit generates the NX Unit power supply from the Unit power supply.

The internal circuits of the Communications Coupler Unit and NX Units operate by the NX Unit power supply.

The NX Unit power supply is supplied to the NX Units in the Slave Terminal through the NX bus connectors.

I/O power supply This power supply is used for driving the I/O circuits of the NX Units and for the con-

nected external devices.

This is connected to the I/O power supply terminal on the Communications Coupler Unit or the Additional I/O Power Supply Unit.

The I/O power supply is used for the following applications.

• I/O circuits operations in the Digital I/O Units

• Input current in a Digital Input Unit

• Load current of the external load of a Digital Output Unit

• Power supply for the connected external devices

The I/O power supply is supplied to the NX Units from the I/O power supply terminals and through the NX bus connectors.

4 - 8

NX-series Digital I/O Unit User’s Manual (W521)

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4 Installation and Wiring

4-2-2 Supplying Each Power Supply and Wiring

The supply method for each power supply to the NX Units is as follows.

Power supply name Description

NX Unit power supply

I/O power supply This power is supplied by one of the following two methods.

This power is supplied to the NX Units through the NX bus connectors by connecting a Unit power supply to the Unit power supply terminals on the Communications Coupler Unit or Additional NX Unit Power Supply Units.

Refer to A-1 Data Sheet on page A-2 for the supply method of each NX Unit.

• Supply from the NX bus

This power is supplied through the NX bus connectors by connecting an I/O power supply to the I/O power supply terminals on the Communications Coupler Unit or Additional I/O Power Supply Units.

• Supply from external source

This power is supplied to the Units from an external source.

I/O power is supplied by connecting an I/O power supply to the I/O power supply terminals on the Units.

4-2 Wiring the Power Supply to the Slave Terminal

4-2-2 Supplying Each Power Supply and Wiring

NX-series Digital I/O Unit User’s Manual (W521)

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4 Installation and Wiring

Precautions for Correct Use

Additional Information

Unit

power supply

(24 VDC)

I/O power

supply

External

output device

I/O power supply

External

output device

To external devices

End CoverI/O power supply terminals

Unit power supply terminals

Communications Coupler Unit

I/O power supply (Supply from external source)

NX Unit

Additional

NX Unit Power

Supply Unit

(Example) DC Input Unit

Two-wire

sensor

Three-wire

sensor

Additional I/O

Power Supply Unit

24 VDC Unit

power supply

24 VDC I/O

power supply

DC Input Unit

NX Unit power supply

To external devices

IOV IOV

IOV

IOG IOG

IOV

IOG

IOVIOV

IOG

A8 B8

IOV

IOG

The I/O power supply is separated.

The I/O power supply is not separated.

Additional NX Unit Power Supply Unit

Additional I/O Power Supply Unit

NX Unit power supply

Internal power

supply circuit

The following are wiring diagrams (examples) for each power supply.

Always use separate power supplies for the Unit power supply and the I/O power supply. If you supply power from the same power supply, noise may cause malfunctions.

Refer to the user's manual for the Communications Coupler Unit on design for power supply to the Slave Terminal.

4 - 10

NX-series Digital I/O Unit User’s Manual (W521)

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4 Installation and Wiring

4-2-3 Calculating the Total Current Consumption from I/O Power Sup-

ply

The total current consumption of I/O power supplied from the NX bus must be within the range of the maximum I/O power supply current of the Communications Coupler Unit or the Additional I/O Power Supply Unit.

To confirm this and to calculate the I/O power supply capacity, calculate the total current consumption from I/O power supply from the NX bus.

The total current consumption from I/O power supply from the NX bus is the total sum of current consumption from I/O power supply of the NX Unit that supplies the I/O power from the NX bus, the current consumption of each applicable I/O circuit, and current consumption of any connected external devices.

Note that the current consumption from I/O power supply indicated in the data sheet for each Unit type does not include the load current of any external connection load and current consumption of any connected external devices.

The total current consumption from I/O power supply of the Digital I/O Units is calculated as follows.

4-2 Wiring the Power Supply to the Slave Terminal

4-2-3 Calculating the Total Current Consumption from I/O Power Supply

 Total Current Consumption from I/O Power Supply of the Digital Input Units

= (Current consumption from I/O power supply of the Digital Input Units) + (Input current of the Digital Input Units × Number of input points used) + (Total current consumption of connected external devices)

 Total Current Consumption from I/O Power Supply of the Digital Output Units

= (Current consumption from I/O power supply of the Digital Output Units) + (Total load current of connection load) + (Total current consumption of connected external devices)

Refer to A-1 Data Sheet on page A-2 for the current consumption from I/O power supply for each Digital I/O Unit model and input current for each Digital Input Unit model.

There are no above confirmations if you use the NX Unit that supplies the I/O power from external source.

Use the total current consumption from I/O power supply from external source and the total current consumption from the I/O power supply from the above NX bus together to calculate the I/O power supply capacity.

NX-series Digital I/O Unit User’s Manual (W521)

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4 Installation and Wiring

Unit power supply terminals

Communications Coupler Unit

NX Unit

I/O power

supply

Unit power

supply

NX Unit power supply

Additional NX Unit Power Supply Unit

NX Unit power supply

Separated by Additional NX Unit Power Supply Unit

The total power consumption from the NX Unit power supply is within the NX Unit power supply capacity.

Internal

power supply

circuit

Internal

power supply

circuit

4-2-4 Power Supply-related Units for the NX-series

A Communications Coupler Unit supplies the NX Unit power supply and I/O power supply to the NX Units in the Slave Terminal.

There are the following types of NX-series power supply-related Units other than Communications Coupler Units.

Refer to the NX-series System Unit User's Manual (Cat. No. W523) for details on NX-series power supply-related Units.

Refer to NX-series catalogs or OMRON websites, or ask your OMRON representative for information on the most recent lineup of NX Units.

Unit name Function

Additional NX Unit Power Supply Unit

This NX Unit provides NX Unit power supply.

This NX Unit is used when the total power consumption of the NX Units in the Slave Terminal exceeds the NX Unit power supply capacity of the Communications Coupler Unit.

4 - 12

The I/O power supply for the Additional NX Unit Power Supply Unit is connected to the NX Unit on the left through the NX bus connector.

NX-series Digital I/O Unit User’s Manual (W521)

Page 81

Unit name Function

- When different I/O power supply voltage are used.

- When separating the power supply systems.

When the I/O power supply becomes the following states for the subsequent NX Units.

- When it exceeds the maximum current of I/O power supply

- When it goes below the voltage specifications of the connected external devices

I/O power

supply

Unit power

supply

Case (b)

I/O power

supply

Internal

power supply

circuit

Case (a)

Communications Coupler Unit

NX Unit

I/O power

supply

Unit power

supply

I/O power

supply

Additional I/O Power Supply Unit

Separated by Additional I/O Power Supply Unit

Internal

power supply

circuit

Communications Coupler Unit

NX Unit Additional I/O

Power Supply Unit

Separated by Additional I/O Power Supply Unit

Additional I/O Power Supply Unit

4 Installation and Wiring

This NX Unit provides additional I/O power supply.

Use this NX Unit in the following cases.

(a) When the I/O power supply capacity is insufficient

• When the total current consumption for the I/O power supply exceeds the maximum current of I/O power supply of the Communications Coupler Unit

• When a voltage drop in the I/O power supply causes the voltage of the I/O

power supply to go below the voltage specifications of the I/O circuits or connected external devices

(b) Separating the I/O power supply

• When connected external devices have different I/O power supply voltages

• When separating the power supply systems

4-2 Wiring the Power Supply to the Slave Terminal

4-2-4 Power Supply-related Units for the NX-series

NX-series Digital I/O Unit User’s Manual (W521)

The NX Unit power supply of the Additional I/O Power Supply Unit is connected to the NX Unit on the left through the NX bus connector.

4 - 13

Page 82

4 Installation and Wiring

I/O power

supply

DC Input Units

(NPN type)

Two-wire sensor*

(e.g., limit switch)

Communications Coupler Unit

NX Unit

Three-wire sensor

with NPN output*

(e.g., photoelectric sensor

or proximity sensor)

Brown (White) Blue (Black)

Black (White) Brown (Red) Blue (Black)

I/O Power Supply

Connection Unit

(16 IOG terminals)

Example of NPN type

Not enough I/O power supply terminals

I/O Power Supply Connection Units

IOV

IOG

I/O power supply is not separated at the I/O Power Supply Connection Units.

Additional I/O Power Supply Unit

Unit power

supply

I/O power

supply

Internal

power supply

circuit

I/O Power Supply

Connection Unit

(16 IOV terminals)

Unit name Function

I/O Power Supply Connection Unit

This NX Unit is used when there are not enough I/O power supply terminals for the connected external devices that are connected to NX Units such as Digital I/O Units and Analog I/O Units.

4 - 14

* Wire colors have been changed according to revisions in the JIS standards for photoelectric and proximity sensors. The colors in parentheses are the wire colors prior to the revisions.

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4 Installation and Wiring

WARNING

4-3 Wiring the Terminals

This section describes how to wire the terminals on the Digital I/O Units.

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.

4-3-1 Wiring to the Screwless Clamping Terminal Block

4-3 Wiring the Terminals

This section describes how to connect wires to the screwless clamping terminal block, the installation and removing methods, and functions for preventing incorrect attachment.

You can connect ferrules that are attached to the twisted wires to the screwless clamping terminal block. You can also connect the twisted wires or the solid wires to the screwless clamping terminal block. If you connect the ferrules, all you need to do to connect the wires is to insert the ferrules into the terminal holes.

Wiring Terminals

The terminals to be wired are as follows.

• I/O power supply terminals

• I/O terminals

4-3-1 Wiring to the Screwless Clamping Terminal Block

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4 Installation and Wiring

Applicable Wires

The wires that you can connect to the screwless clamping terminal block are twisted wires, solid wires, and ferrules that are attached to the twisted wires. The following section describes the dimensions and processed methods for applicable wires.

 Dimensions of Wires Connected to the Terminal Block

The dimensions of wires that you can connect into the terminal holes of the screwless clamping terminal block are as in the figure below.

Process the applicable wires that are specified in the following description to apply the dimensions.

1.6 mm max. (Terminals other than ground terminals)

2.0 mm max. (Ground terminals)

2.4 mm max. (Terminals other than ground terminals)

2.7 mm max. (Ground terminals)

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4 Installation and Wiring

8 to 10 mm

2.4 mm max. (Terminals other than ground terminals)

2.7 mm max. (Ground terminals)

1.6 mm max. (Terminals other than ground terminals)

2.0 mm max. (Ground terminals)

 Using Ferrules

If you use ferrules, attach the twisted wires to them.

Observe the application instructions for your ferrules for the wire stripping length when attaching ferrules.

Always use one-pin ferrules. Do not use two-pin ferrules.

The applicable ferrules, wires, and crimping tools are listed in the following table.

Applica-

Terminal

types

Terminals other than ground terminals

Ground terminals Terminals other than ground terminals

*1. Some AWG14 wires exceed 2.0 mm2 and cannot be used in the screwless clamping terminal block.

Manufac-

turer

Phoenix Contact

Weidmuller H0.14/12 0.14 (#26) Weidmuller (The figure in parentheses is the appli-

Ferrule

model

AI0,34-8 0.34 (#22) Phoenix Contact (The figure in parentheses is the AI0,5-8 0.5 (#20) AI0,5-10 AI0,75-8 0.75 (#18) AI0,75-10 AI1,0-8 1.0 (#18) AI1,0-10 AI1,5-8 1.5 (#16) AI1,5-10 AI2,5-10

H0.25/12 0.25 (#24) H0.34/12 0.34 (#22) H0.5/14 0.5 (#20) H0.5/16 H0.75/14 0.75 (#18) H0.75/16 H1.0/14 1.0 (#18) H1.0/16 H1.5/14 1.5 (#16) H1.5/16

ble wire

(mm

(AWG))

2.0

applicable wire size.)

CRIMPFOX 6 (0.25 to 6 mm

cable wire size.)

PZ6 Roto (0.14 to 6 mm

Crimping tool

, AWG24 to 10)

, AWG26 to 10)

4-3 Wiring the Terminals

4-3-1 Wiring to the Screwless Clamping Terminal Block

When you use any ferrules other than those in the above table, crimp them to the twisted wires so that the following processed dimensions are achieved.

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4 Installation and Wiring

Precautions for Correct Use

Conductor length (stripping length)

 Using Twisted Wires/Solid Wires

If you use the twisted wires or the solid wires, the applicable wire range and conductor length (stripping length) are as follows.

Terminal types Applicable wire range Conductor length (stripping length)

Ground terminals Terminals other than

ground terminals

*1. When you use the NX-TB1 Terminal Block, use twisted wires to connect the ground terminal. Do

not use solid wires.

2.0 mm

0.08 to 1.5 mm

AWG28 to 16

9 to 10 mm

8 to 10 mm

• Use cables with suitable wire sizes for the carrying current. There are also restrictions on the current due to the ambient temperature. Refer to the manuals for the cables and use the cables correctly for the operating environment.

• For twisted wires, strip the sheath and twist the conductor portion. Do not unravel or bend the conductor portion of twisted wires or solid wires.

Unravel wires Bend wires

4 - 18

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Connecting/Removing Wires

Terminal hole

Release hole

This section describes how to connect and remove wires.

 Terminal Block Parts and Names

4 Installation and Wiring

4-3 Wiring the Terminals

 Required Tools

Use a flat-blade screwdriver to connect and remove wires.

Use the following flat-blade screwdriver.

Side view

8 to 12

Recommended screwdriver

Model Manufacturer

SZF 0-0,42,5 Phoenix Contact

Front view

2.5-mm dia.

2.5 mm0.4 mm

4-3-1 Wiring to the Screwless Clamping Terminal Block

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4 Installation and Wiring

Ferrule

10 to 15

Release hole Flat-blade screwdriver

 Connecting Ferrules

Insert the ferrule straight into the terminal hole.

It is not necessary to press a flat-blade screwdriver into the release hole.

After you make a connection, make sure that the ferrule is securely connected to the terminal block.

 Connecting Twisted Wires/Solid Wires

Use the following procedure to connect the twisted wires or solid wires to the terminal block.

1 Press a flat-blade screwdriver diagonally into the release hole.

Press at an angle of 10 to 15.

If you press in the screwdriver correctly, you will feel the spring in the release hole.

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4 Installation and Wiring

Twisted wire/Solid wire

2 Leave the flat-blade screwdriver pressed into the release hole and insert the twisted wire or the

solid wire into the terminal hole.

Insert the twisted wire or the solid wire until the stripped portion is no longer visible to prevent shorting.

4-3 Wiring the Terminals

3 Remove the flat-blade screwdriver from the release hole.

After you make a connection, make sure that the twisted wire or the solid wire is securely connected to the terminal block.

4-3-1 Wiring to the Screwless Clamping Terminal Block

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4 Installation and Wiring

Precautions for Safe Use

• Do not press the flat-blade screwdriver straight into the release hole. Doing so may break the terminal block.

• When you insert a flat-blade screwdriver into a release hole, press it down with a force of 30 N max. 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. Doing so may break the terminal block.

• Make sure that all wiring is correct.

• Do not bend the cable forcibly. Doing so may sever the cable.

4 - 22

NX-series Digital I/O Unit User’s Manual (W521)

Page 91

 Removing Wires

10 to 15

Flat-blade screwdriver

Wire

Use the following procedure to remove the wires from the terminal block.

The removal method is the same for ferrules, twisted wires, and solid wires.

1 Press the flat-blade screwdriver diagonally into the release hole.

Press at an angle of 10 to 15.

If you press in the screwdriver correctly, you will feel the spring in the release hole.

4 Installation and Wiring

4-3 Wiring the Terminals

2 Leave the flat-blade screwdriver pressed into the release hole and pull out the wire.

3 Remove the flat-blade screwdriver from the release hole.

4-3-1 Wiring to the Screwless Clamping Terminal Block

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Page 92

4 Installation and Wiring

Precautions for Safe Use

• Do not press the flat-blade screwdriver straight into the release hole. Doing so may break the terminal block.

• When you insert a flat-blade screwdriver into a release hole, press it down with a force of 30 N max. 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. Doing so may break the terminal block.

• Make sure that all wiring is correct.

• Do not bend the cable forcibly. Doing so may sever the cable.

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4 Installation and Wiring

Lock lever

Terminal block

Removing a Terminal Block

1 Press the lock lever on the terminal block and pull out the top of the terminal block to remove it.

4-3 Wiring the Terminals

4-3-1 Wiring to the Screwless Clamping Terminal Block

NX-series Digital I/O Unit User’s Manual (W521)

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Page 94

4 Installation and Wiring

Attaching a Terminal Block

1 Place the terminal block hook on the guide at the bottom of the NX Unit and press in on the top

of the terminal block to attach it.

GuideHook

Mount a Terminal Block that is applicable to each Unit model.

Refer to Applicable Terminal Blocks for Each Unit Model on page 3-5 for the applicable Terminal Blocks.

4 - 26

NX-series Digital I/O Unit User’s Manual (W521)

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4 Installation and Wiring

Terminal Block

Unit

Cannot be attached.

Preventing Incorrect Attachment of Terminal Blocks

In order to prevent unintentionally installing the wrong terminal block, you can limit the combination of a Unit and a terminal block.

Insert three Coding Pins (NX-AUX02) into three of the six incorrect attachment prevention holes on the Unit and on the terminal block. Insert these pins into positions so that they do not interfere with each other when the Unit and terminal block are connected to each other.

You can use these pins to create a combination in which the wrong terminal block cannot be attached because the pin patterns do not match.

4-3 Wiring the Terminals

4-3-1 Wiring to the Screwless Clamping Terminal Block

NX-series Digital I/O Unit User’s Manual (W521)

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Page 96

4 Installation and Wiring

For Terminal Block For Unit

Coding Pins (Use this part.)

Runners

 Types of Coding Pins

There are two types of Coding Pins, both with their own unique shape: one for terminal blocks and one for Units.

Three pins come with each runner.

Use the following Coding Pins.

Name Model Specification

Coding Pin NX-AUX02 For 10 Units

(Terminal Block: 30 pins, Unit: 30 pins)

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4 Installation and Wiring

 Insertion Locations and Patterns of Coding Pins

Insert three Coding Pins of each on the terminal block and on the Unit at the positions designated by the numbers 1 through 6 in the figure below.

As shown in the following table, there are 20 unique pin patterns that can be used.

Terminal Block Unit

4-3 Wiring the Terminals

Holes used by OMRON

Holes for incorrect attachment prevention (pin locations)

Pattern

No.11 ○ ○ ○ No.12 ○ ○ ○ No.13 ○ ○ ○ No.14 ○ ○ ○ No.15 ○ ○ ○ No.16 ○ ○ ○ No.17 ○ ○ ○ No.18 ○ ○ ○ No.19 ○ ○ ○ No.20 ○ ○ ○

Pin locations for Terminal Block

123456

○No.1 ○ ○ ○No.2 ○ ○ ○No.3 ○ ○ ○No.4 ○ ○ ○No.5 ○ ○ ○No.6 ○ ○ ○No.7 ○ ○ ○No.8 ○ ○ ○No.9 ○ ○ ○No.10 ○ ○

Holes used by OMRON

Holes for incorrect

attachment prevention (pin locations)

○: Pin inserted

Pin locations for Unit

123456

○○○

○○○ ○○○

○○○

○○○ ○○○ ○○○

○○○

○○○ ○○○ ○○○

○○○ ○○○

○○○

○○○ ○○○

4-3-1 Wiring to the Screwless Clamping Terminal Block

NX-series Digital I/O Unit User’s Manual (W521)

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4 Installation and Wiring

Precautions for Correct Use

To make the maximum of 20 patterns, purchase two sets of NX-AUX02 Pins. (One set for 10 Units.)

• OMRON uses the holes other than No. 1 to 6 in the figure on the previous page. If you insert a Coding Pin into one of the holes used by OMRON on the terminal block side, this makes it impossible to mount the terminal block on a Unit.

• Do not use Coding Pins that have been attached and removed.

 Inserting the Coding Pins

1 Hold the pins by the runner and insert a pin into one of the incorrect attachment prevention

holes on the terminal block or on the Unit.

Terminal Block Unit

2 Rotate the runner to break off the Coding Pin.

Terminal Block

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4 Installation and Wiring

Unit

4-3 Wiring the Terminals

4-3-1 Wiring to the Screwless Clamping Terminal Block

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4 Installation and Wiring

Precautions for Safe Use

Connector-Terminal Block Conversion Unit

20 or 40 terminals

Connecting Cable

NX Unit

Connector-Terminal Block Conversion Unit

4-3-2 Wiring to Connectors

This section describes wiring for the Digital I/O Units with connectors.

Depending on the connector, the following methods are used to connect the Digital I/O Units with connectors to external I/O devices.

• Use an OMRON Connecting Cable (equipped with a special connector) to connect to a Terminal Block or Relay Terminal.

• Use a special connector and make your own cable.

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

• Do not apply voltages or connect loads to the Output Units or slaves in excess of the maximum ratings.

• Turn ON the power after checking the connector's wiring.

• Do not pull the cable. Doing so will damage the cable.

• Bending the cable too sharply can damage or break wiring in the cable.

Connecting to Connector-Terminal Block Conversion Units or I/O Relay Terminals

OMRON Connecting Cable can be used to connect Digital I/O Units with connectors to OMRON Connector-Terminal Block Conversion Units or to OMRON I/O Relay Terminals.

For details, refer to A-3 Connecting Connector-Terminal Block Conversion Units and I/O Relay Termi- nals on page A-63.

 Connection Examples

I/O Relay Terminals

NX Unit

Connecting Cable

I/O Relay Terminal

If the external power supply has polarity, connect it with the correct polarity. If the polarity is reversed, current may flow in the reverse direction and damage the connected devices regard-

4 - 32

less of the operation of the Controller.

NX-series Digital I/O Unit User’s Manual (W521)

Omron NX-ID3317, NX-ID4342, NX-ID3443, NX-ID3444, NX-ID4442 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual