How it Works
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Sysmac NX-PF0730
User Manual
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Omron Sysmac NX-PD1000, Sysmac NX-PF0630, Sysmac NX-PC0030, Sysmac NX-PF0730, Sysmac NX-PC0020 User Manual

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Machine Automation Controller
NX-series
System Units
User’s Manual
NX-PD1 NX-PF0 NX-PC0 NX-TBX01
Additional NX Unit Power Supply Units Additional I/O Power Supply Units I/O Power Supply Connection Units Shield Connection Units
NOTE
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.
• Microsoft, Windows, Windows Vista, Excel, and Visual Basic are either registered trademarks or trademarks of Microsoft Corporation in the United States 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.
Copyrights
Microsoft product screen shots reprinted with permission from Microsoft Corporation.

Introduction

Thank you for purchasing an NX-series System Unit.
This manual contains information that is necessary to use the NX-series System Unit. Please read this manual and make sure you understand the functionality and performance of the NX-series System 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 System Unit
NX-PD /PF /PC NX-TBX
NX-series System Units User’s Manual (W523)
1

CONTENTS

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 .......................................................................................................................... 9
Terms and Conditions Agreement........................................................................10
Warranty, Limitations of Liability ................................................................................................................ 10
Application Considerations ........................................................................................................................ 11
Disclaimers ................................................................................................................................................ 11
Safety Precautions .................................................................................................12
Definition of Precautionary Information...................................................................................................... 12
Symbols..................................................................................................................................................... 12
Warnings.................................................................................................................................................... 13
Cautions..................................................................................................................................................... 14
Precautions for Safe Use....................................................................................... 16
Precautions for Correct Use..................................................................................21
Regulations and Standards................................................................................... 22
Conformance to EU Directives .................................................................................................................. 22
Conformance to UL and CSA Standards ................................................................................................... 23
Conformance to Shipbuilding Standards ................................................................................................... 23
Conformance to KC Standards.................................................................................................................. 23
Software Licenses and Copyrights ............................................................................................................ 23
Unit Versions ..........................................................................................................24
Unit Versions.............................................................................................................................................. 24
Unit Versions and Support Software Versions ........................................................................................... 25
Related Manuals .....................................................................................................26
Terminology ............................................................................................................28
Revision History .....................................................................................................30
Sections in this Manual .........................................................................................33
Section 1 Features and System Configuration
1-1 Features and Types of System Units ................................................................................... 1-2
1-1-1 System Unit Features..................................................................................................................1-2
1-1-2 System Unit Types......................................................................................................................1-3
1-2 System Configuration ........................................................................................................... 1-4
1-2-1 System Configuration in the Case of a CPU Unit........................................................................1-4
1-2-2 System Configuration of Slave Terminals ...................................................................................1-5
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NX-series System Units User’s Manual (W523)
1-3 Model List............................................................................................................................... 1-7
1-3-1 Model Notation............................................................................................................................ 1-7
1-3-2 Additional NX Unit Power Supply Unit........................................................................................ 1-8
1-3-3 Additional I/O Power Supply Unit................................................................................................ 1-8
1-3-4 I/O Power Supply Connection Unit ............................................................................................. 1-9
1-3-5 Shield Connection Unit ............................................................................................................... 1-9
1-4 Support Software................................................................................................................. 1-10
Section 2 Specifications
2-1 General Specifications.......................................................................................................... 2-2
2-2 Individual Specifications ...................................................................................................... 2-3
Section 3 Part Names and Functions
3-1 Names of Power Supply-related Unit Parts......................................................................... 3-2
3-1-1 Screwless Clamping Terminal Block Type.................................................................................. 3-2
3-1-2 Indicators .................................................................................................................................... 3-6
3-2 Names of Shield Connection Unit Parts.............................................................................. 3-9
3-2-1 Screwless Clamping Terminal Block Type.................................................................................. 3-9
3-2-2 Indicators .................................................................................................................................. 3-12
CONTENTS
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 .................................................................................................................... 4-6
4-1-4 Installation Orientation................................................................................................................ 4-7
4-2 Wiring the Power Supply to the CPU Unit........................................................................... 4-9
4-2-1 Power Supply Types................................................................................................................... 4-9
4-2-2 Supplying Each Power Supply and Wiring ................................................................................. 4-9
4-2-3 Power Supply-related Units and Wiring Methods ......................................................................4-11
4-3 Wiring the Power Supply to the Slave Terminal ............................................................... 4-14
4-3-1 Power Supply Types................................................................................................................. 4-14
4-3-2 Supplying Each Power Supply and Wiring ............................................................................... 4-15
4-3-3 Power Supply-related Units and Wiring Methods ..................................................................... 4-17
4-4 Wiring of Grounding............................................................................................................ 4-20
4-5 Wiring the Additional Power Supply Units........................................................................ 4-21
4-5-1 Wiring the Additional NX Unit Power Supply Unit..................................................................... 4-22
4-5-2 Wiring the Additional I/O Power Supply Unit ............................................................................ 4-26
4-5-3 Protective Devices .................................................................................................................... 4-31
4-6 Wiring the I/O Power Supply Connection Unit.................................................................. 4-33
4-7 Wiring the Shield Connection Unit .................................................................................... 4-37
4-8 Wiring the Terminals ........................................................................................................... 4-38
4-8-1 Wiring to the Screwless Clamping Terminal Block.................................................................... 4-38
Section 5 Troubleshooting
5-1 How to Check for Errors ....................................................................................................... 5-2
5-2 Checking for Errors with the Indicators .............................................................................. 5-3
NX-series System Units User’s Manual (W523)
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CONTENTS
5-3 Checking for Errors and Troubleshooting on the Support Software................................ 5-5
5-3-1 Checking for Errors from the Sysmac Studio ..............................................................................5-5
5-3-2 Checking for Errors from Support Software Other Than the Sysmac Studio ..............................5-6
5-3-3 Event Codes and Corrections for Errors .....................................................................................5-7
5-3-4 Meaning of Error .........................................................................................................................5-8
5-4 Resetting Errors .................................................................................................................. 5-11
5-5 Troubles Specific to Each Type of NX Units ..................................................................... 5-12
5-5-1 Additional NX Unit Power Supply Unit ......................................................................................5-12
5-5-2 Additional I/O Power Supply Unit..............................................................................................5-13
5-6 Troubleshooting Flowchart ................................................................................................ 5-14
Section 6 Inspection and Maintenance
6-1 Cleaning and Inspection ....................................................................................................... 6-2
6-1-1 Cleaning...................................................................................................................................... 6-2
6-1-2 Periodic Inspection......................................................................................................................6-2
6-2 Maintenance Procedures ...................................................................................................... 6-5
Appendices
A-1 Data Sheet ..............................................................................................................................A-2
A-1-1 Model List....................................................................................................................................A-2
A-1-2 Additional NX Unit Power Supply Unit ........................................................................................A-3
A-1-3 Additional I/O Power Supply Unit................................................................................................A-6
A-1-4 I/O Power Supply Connection Unit............................................................................................A-11
A-1-5 Shield Connection Unit..............................................................................................................A-18
A-2 Dimensions ..........................................................................................................................A-21
A-2-1 Additional NX Unit Power Supply Unit, Additional I/O Power Supply Unit, I/O Power Supply Con-
A-3 List of NX Objects................................................................................................................A-23
A-3-1 Format of Object Descriptions...................................................................................................A-23
A-3-2 System Units.............................................................................................................................A-24
A-4 List of Screwless Clamping Terminal Block Models ........................................................A-25
A-4-1 Model Notation..........................................................................................................................A-25
A-4-2 List of Terminal Block Models....................................................................................................A-25
A-5 Version Information with CPU Units ..................................................................................A-26
A-5-1 Relationship between Unit Versions of Units ............................................................................A-26
A-6 Version Information with Communications Coupler Units ..............................................A-27
A-6-1 Connection to an EtherCAT Coupler Unit .................................................................................A-27
A-6-2 Connection to an EtherNet/IP Coupler Unit ..............................................................................A-28
nection Unit, and Shield Connection Unit..................................................................................A-21
Index
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NX-series System Units User’s Manual (W523)
CONTENTS
NX-series System Units User’s Manual (W523)
5

Relevant Manuals

Relevant Manuals
The table below provides the relevant manuals for the NX-series System Units.
Read all of the manuals that are relevant to your system configuration and application to make the most of the NX-series System Units.
Other manuals, such as related product manuals, are necessary for specific system configurations and applications. Refer to Related Manuals on page 26 for the related manuals.
Manual name Application
NX-series System Units User's Manual
NX-series Data Reference Man­ual
Learning how to use NX-series System Units
Referencing lists of the data that is required to configure systems with NX-series Units
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NX-series System Units User’s Manual (W523)

Manual Structure

4-9
4 Installation and Wiring
NJ-series CPU Unit Hardware User’s Manual (W500)
stinU gnitnuoM 3-4
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 lock ing the slide rs by moving the m toward the back of the Units. The End Cover is connec ted 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 System Units User’s Manual (W523)
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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, Industrial PCs, and Communications Coupler Units with different unit versions and for different versions of the Sup­port Software is given.
Note References are provided to more detailed or related information.
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NX-series System Units User’s Manual (W523)

Precaution on Terminology

RightLeft
Up
Down
• In this manual, “download” refers to transferring data from the Support Software to a physical device and “upload” refers to transferring data from a physical device to the Support Software.
• In this manual, the directions in relation to the Units are given in the following figure, which shows upright installation.
Manual Structure
• This user's manual refers to the NY-series IPC Machine Controller Industrial Panel PCs and Indus­trial Box PCs as simply Industrial PCs or as NY-series Industrial PCs.
• This user's manual refers to the built-in EtherCAT port on an NJ/NX-series Controller or NY-series Industrial PC as simple a built-in EtherCAT port.
• This user's manual may omit manual names and manual numbers in places that refer to the user's manuals for CPU Units and Industrial PCs. The following table gives some examples. When neces­sary, refer to Related Manuals on page 26 to determine the appropriate manual based on the com­mon text for the omitted contents.
Examples:
Manual name Omitted contents Common text
NJ/NX-series CPU Unit Software User's Manual
NY-series IPC Machine Controller Industrial Panel PC / Industrial Box PC Software User’s Manual NJ/NX-series CPU Unit Built-in Ether­CAT® Port User's Manual
NY-series IPC Machine Controller Industrial Panel PC / Industrial Box PC Built-in EtherCAT® Port User’s Manual
• This user's manual may omit manual names and manual numbers in places that refer to the user's
Software user's manual for the connected CPU Unit or Industrial PC
User's manual for built-in EtherCAT port on the connected CPU Unit or Industrial PC
Software User's Manual
Built-in EtherCAT port
manuals for Communications Coupler Units. If you will use a Communications Coupler Unit, refer to Related Manuals on page 26 to identify the manual for your Unit.
NX-series System Units User’s Manual (W523)
9

Terms and Conditions Agreement

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.
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NX-series System Units User’s Manual (W523)

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.
Terms and Conditions Agreement
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 System Units User’s Manual (W523)
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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.
Safety Precautions

Definition of Precautionary Information

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

Symbols

The circle and slash symbol indicates operations that you must not do.
The specific operation is shown in the circle and explained in text.
This example indicates prohibiting disassembly.
The triangle symbol indicates precautions (including warnings).
The specific operation is shown in the triangle and explained in text.
This example indicates a precaution for electric shock.
The triangle symbol indicates precautions (including warnings).
The specific operation is shown in the triangle and explained in text.
This example indicates a general precaution.
The filled circle symbol indicates operations that you must do.
The specific operation is shown in the circle and explained in text.
This example shows a general precaution for something that you must do.
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NX-series System Units User’s Manual (W523)

Warnings

WARNING
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.
Safety Precautions
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, Industrial PC, 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 or Industrial PC will turn OFF all outputs from 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 System Units User’s Manual (W523)
13
Safety Precautions
Caution
Peripheral device
(e.g., computer)
Non-isolated DC power
supply (internal power
supply circuit)
24 V
0 V
Peripheral device
cable
Ground terminal
Communications Coupler Unit
NX Unit power supply
Unit power supply
Voltage and Current Inputs
Make sure that the voltages and currents that are input to the Units and slaves are within the specified ranges.
Inputting voltages or currents that are outside of the specified ranges may cause accidents or fire.
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

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.
14
Be sure that all terminal screws and cable connector screws are tightened to the torque specified in the relevant manuals. The loose screws may result in fire or malfunction.
NX-series System Units User’s Manual (W523)
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 System Units User’s Manual (W523)
15

Precautions for Safe Use

Example: NX Unit (12 mm width)
NG NG
Precautions for Safe Use
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.
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 touch the pins in the NX bus connector on the Unit. Dirt may adhere to the pins in the NX bus connector, which may result in malfunctions.
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NX-series System Units User’s Manual (W523)
Precautions for Safe Use
Restricted
region (shaded
portion)
Up
Down
• Do not write on 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 CPU Rack or the Slave Termi­nal. Refer to the user’s manual for the connected CPU Unit or Communications Coupler Unit for the restricted region of CPU Unit and Communications Coupler 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-series System Units User’s Manual (W523)
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Precautions for Safe Use
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.
NG NG
• Use crimp terminals for wiring the M3 screw terminal blocks. Do not connect bare stranded wires directly to the M3 screw terminal blocks.
Power Supply Design
• Use all Units within the I/O power supply ranges that are given in the specifications.
• Use the I/O power supply current for the CPU Rack of the NX-series NX1P2 CPU Unit at 4 A or less. Using the currents that are outside of the specifications may cause failure or damage.
• 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.
18
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 System Units User’s Manual (W523)
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 the Support Software.
• 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, CPU Unit, or Industrial PC 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 or the Industrial PC (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 a slave or Unit.
General Communications
• Do not exceed the ranges that are given in the specifications for the communications distance and number of connected Units.
• Refer to the user’s manual for the Communications Coupler Unit for precautions for the safe use of communications with the connected Communications Coupler Unit.
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.
NX-series System Units User’s Manual (W523)
19
Precautions for Safe Use
Disposal
• Dispose of the product according to local ordinances as they apply.
20
NX-series System Units User’s Manual (W523)

Precautions for Correct Use

Storage, Mounting, and Wiring
• Follow the instructions in this manual to correctly perform installation and wiring.
• Do not operate or store the Units in the following locations. Doing so may result in 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.
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 CPU Unit, the Communi­cations Coupler Unit or NX Units.
General Communications
• Refer to the user’s manual for the Communications Coupler Unit for precautions for the correct use of communications with the connected Communications Coupler Unit.
NX-series System Units User’s Manual (W523)
21

Regulations and Standards

Regulations and Standards

Conformance to EU Directives

Applicable Directives
• EMC Directives
• Low Voltage Directive
Concepts
EMC Directives
OMRON devices that comply with EU Directives also conform to the related EMC standards so that they can be more easily built into other devices or the overall machine. The actual products have been checked for conformity to EMC standards.*1
Whether the products conform to the standards in the system used by the customer, however, must be checked by the customer. EMC-related performance of the OMRON devices that comply with EU Directives will vary depending on the configuration, wiring, and other conditions of the equipment or control panel on which the OMRON devices are installed. The customer must, therefore, perform the final check to confirm that devices and the overall machine conform to EMC standards.
*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 61010-2-201.
Conformance to EU Directives
The NX-series Units comply with EU Directives. To ensure that the machine or device in which the NX-series Units are used complies with EU Directives, the following precautions must be observed.
• The NX-series Units must be installed within a control panel.
• You must use SELV power supply 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 S8VK-S series Power Supplies for the CPU Racks with NX-series NX1P2 CPU Units. We recommend that you use the OMRON S8JX-series Power Sup­plies for Slave Terminals. EMC standard compliance was confirmed for these recommended Power Supplies.
• NX-series Units that comply with EU 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 EU 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.
22
NX-series System Units User’s Manual (W523)
• 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.

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.
For usage conditions for shipbuilding standards, refer to Conformance to Shipping Standards in the user's manual for the CPU Unit or Communications Coupler Unit to which NX Units are connected.
Regulations and Standards

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 System Units User’s Manual (W523)
23

Unit Versions

LOT No.
Lot number and unit version Unit model number
Lot number 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 Support Software 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.
An example is provided below for Communications Coupler Units and NX Units. For the notation that is used for the unit versions of CPU Units or Industrial PCs and the confirmation method for unit versions, refer to the user's manual for each Unit.
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.
Notched
area
Unit
specifications
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NX-series System Units User’s Manual (W523)
The following information is provided in the Unit specifications on the Unit.
Name Function
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.
DDMYY: Lot number, : Used by OMRON.
“M” gives the month (1 to 9: January to September, X: October, Y: November, Z: December)
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 “M” gives the month (1 to 9: January to September, X: October, Y: November, Z: December)
•1 The decimal portion of the unit version is omitted. (It is provided in the Unit specifications.)
: Lot number, : Used by OMRON.
: Unit version
Confirming Unit Versions with the Support Software
Unit Versions
If your NX Unit is connected to a CPU Unit, refer to the user’s manual of the connected CPU Unit for the confirmation method for the unit version of the NX Unit.
If your NX Unit is connected to a Communications Coupler Unit, refer to the user’s manual of the con­nected Communications Coupler Unit for the confirmation method for the unit version of the Communi­cations Coupler Unit and NX Unit.

Unit Versions and Support Software Versions

The functions that are supported depend on the unit version of the Unit. The version of Support Soft­ware that supports the functions that were added for an upgrade is also required to use those functions.
Refer to A-5 Version Information with CPU Units on page A-26 or A-6 Version Information with Commu- nications Coupler Units on page A-27 for the functions that are supported by each Unit version.
NX-series System Units User’s Manual (W523)
25

Related Manuals

Related Manuals
The following table shows related manuals. Use these manuals for reference.
Manual name Cat. No. Model numbers Application Description
NX-series System Units User’s Manual
NX-series Data Refer­ence Manual
Sysmac Studio Version 1 Operation Manual
NX-IO Configurator Operation Manual
NJ/NX-series Trouble­shooting Manual
NY-series Troubleshoot­ing Manual
NX-series NX1P2 CPU Unit Hardware User’s Manual
NX-series EtherCAT Coupler Unit User’s Manual
W523 NX-PD1
NX-PF0
NX-PC0
NX-TBX01
W525 NX- Referencing lists of
W504 SYSMAC-
SE2
W585 CXONE-AL
D-V4
W503 NX701-
NJ501-
NJ301-
NJ101-
NX1P2-
W564 NY532-
NY512-
W578 NX1P2- Learning the basic
W519 NX-ECC20 Learning how to
Learning how to use NX-series System Units
the data that is required to config­ure systems with NX-series Units Learning about the operating proce­dures and func­tions of the Sysmac Studio Learning about the operating proce­dures and func­tions of the NX-IO Configurator.
Learning about the errors that may be detected in an NJ/NX-series Con­troller
Learning about the errors that may be detected in an NY-series Indus­trial PC
specifications of the NX-series NX1P2 CPU Units, including introduc­tory information, designing, installa­tion, and mainte­nance. Mainly hardware informa­tion is provided.
use an NX-series EtherCAT Coupler Unit and Ether­CAT Slave Termi­nals
The hardware and functions of the NX-series System 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.
Describes the operating procedures of the Sysmac Studio.
Describes the operating procedures of the NX-IO Configurator.
Concepts on managing errors that may be detected in an NJ/NX-series Con­troller and information on individual errors are described.
Concepts on managing errors that may be detected in an NY-series Controller and information on individual errors are described.
An introduction to the entire NX1P2 CPU Unit 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 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.
26
NX-series System Units User’s Manual (W523)
Manual name Cat. No. Model numbers Application Description
NX-series Ether-
Net/IPTM Coupler Unit User's Manual
NJ/NX-series CPU Unit Built-in EtherCAT Port User's Manual
NY-series IPC Machine Controller Industrial Panel PC / Industrial Box PC Built-in Ether­CAT® Port User’s Manual
W536 NX-EIC202 Learning how to
use an NX-series EtherNet/IP Cou­pler Unit and Eth­erNet/IP Slave Terminals
W505 NX701-
NJ501-
NJ301-
NJ101-
NX1P2-
W562 NY532-
NY512-
Using the built-in EtherCAT port on an NJ/NX-series CPU Unit
Using the built-in EtherCAT port on an NY-series Industrial PC
The following items are described: the overall system and configuration meth­ods of an EtherNet/IP Slave Terminal (which consists of an NX-series Ether­Net/IP Coupler Unit and NX Units), and information on hardware, setup, and functions to set up, control, and monitor NX Units.
Information on the built-in EtherCAT port is provided.
This manual provides an introduction and provides information on the config­uration, features, and setup.
Information on the built-in EtherCAT port is provided.
This manual provides an introduction and provides information on the config­uration, features, and setup.
Related Manuals
NX-series System Units User’s Manual (W523)
27

Terminology

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
CPU Rack --- A rack to which a CPU Unit is mounted. For an NX-series NX1P2 CPU
DC time --- Time indicated by the clock shared between the CPU Unit and the NX
device profile --- A collection of device dependent information and functionality providing
device variable --- A variable that is used to access a specific device through an I/O port by
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 NJ/NX-series CPU Unit or
I/O refreshing --- Cyclic data exchange with external devices that is performed with prede-
index --- Address of an NX object within an application process. network configuration information --- The EtherCAT network configuration information held by the EtherCAT
NX bus --- The NX-series internal bus. NX message communications --- One form of NX bus communications that uses message communica-
object --- An abstract representation of a particular component within a device,
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.
Unit, a CPU Rack has a CPU Unit with NX Units and an End Cover mounted to it.
Units in a CPU Rack for an NX-series NX1P2 CPU Unit. EtherCAT slaves that support distributed clock synchronization have a clock that is shared by all slaves in the network. The time that is based on this distrib­uted clock is called the DC time. The same clock is shared by an NX-series NX1P2 CPU Unit, NX Units connected to the CPU Unit, and applicable EtherCAT slaves.
consistency between similar devices of the same device type.
an NJ/NX-series CPU Unit or NY series Industrial PC. Process data on an EtherCAT slave is allocated to this variable. For an NX-series NX1P2 CPU Unit, I/O data for the NX Units on a CPU Unit is allocated. A user application on a CPU Unit or Industrial PC accesses a device that can be connected, by directly reading and writing this device variable.
the EtherCAT master.
ogy providers join forces to support and promote the further technology development.
between I/O ports and variables.
NY-series Industrial PC to exchange data with an external device (slave or Unit).
termined memory addresses.
master.
tions to execute the functions of NX Units and access NX objects when­ever required.
which consists of data, parameters, and methods.
Description
28
NX-series System Units User’s Manual (W523)
Terminology
Term
Operational --- A state in which I/O refresh communications and NX message communi-
PDO communications --- An acronym for process data communications. Pre-Operational --- A state in which NX message communications are possible between the
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 NX bus communications in which process data objects
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 which input refresh communications and NX message commu-
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 NX 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
cations are possible between the communications master and the Com­munications Coupler Unit or NX Units.
communications master and the Communications Coupler Unit or NX Units, but I/O refresh communications are not possible.
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.
more process data entities.
nications are possible between the communications master and the Communications Coupler Unit or NX Units, but output refresh communi­cations are not possible.
pler Unit and NX Units are mounted
(DC) in EtherCAT communications. The slaves execute controls accord­ing to this interrupt timing.
objects.
cuted.
NX-series System Units User’s Manual (W523)
29

Revision History

Cat. No.
W523-E1-06
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 Corrected mistakes 03 September 2013 Added information on the NX-PF0730 and corrected mistakes. 04 April 2015 Made changes accompanying the addition of the NX-series CPU Unit
05 October 2016 • Made changes accompanying the addition of NY-series IPC Machine
06 June 2017 • Made changes accompanying the upgrade of the NX-ECC203 unit ver-
and corrected mistakes.
Controller Industrial Panel PCs and Industrial Box PCs.
• Made changes accompanying the addition of the NX-series NX1P2 CPU Unit.
• Corrected mistakes.
sion to version 1.5.
• Made changes accompanying the upgrade of the NX-EIC202 unit ver­sion to version 1.2.
• Corrected mistakes.
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NX-series System Units User’s Manual (W523)
1
2
3
4
5
6
A
I
1
2
3
4
5
6
A
I
9
Features and System Configuration
Specifications
Part Names and Functions
Installation and Wiring
Troubleshooting
Appendices
Inspection and Maintenance
Index

Sections in this Manual

Sections in this Manual
NX-series System Units User’s Manual (W523)
33
Sections in this Manual
34
NX-series System Units User’s Manual (W523)
Features and System Configura­tion
This section describes NX system configuration and System Unit types.
1-1 Features and Types of System Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-1-1 System Unit Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-1-2 System Unit Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-2 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1-2-1 System Configuration in the Case of a CPU Unit . . . . . . . . . . . . . . . . . . . . . . . 1-4
1-2-2 System Configuration of Slave Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1-3 Model List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
1-3-1 Model Notation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
1-3-2 Additional NX Unit Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
1-3-3 Additional I/O Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
1-3-4 I/O Power Supply Connection Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1-3-5 Shield Connection Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1-4 Support Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
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NX-series System Units User’s Manual (W523)
1 - 1
1 Features and System Configuration
Additional Information

1-1 Features and Types of System Units

This section describes features and types of System Units.

1-1-1 System Unit Features

System Units are Units used to build the system for separating power supply systems or supplying power in the midstream in a CPU Rack or a Slave Terminal.
The NX-series System Units provide the following features.
CPU Rack
A CPU Rack is a rack to which a CPU Unit is mounted. For an NX1P2 CPU Unit, a CPU Rack is configured to have a CPU Unit with NX Units and an End Cover mounted to it.
Slave Terminal
Slave Terminal is a generic name for a building block-type remote I/O terminal that contains a group of NX Units connected to a Communications Coupler Unit.
Can be Connected to a CPU Unit or Communications Coupler Unit
NX Unit NX-series System Units can be connected to the following Units.
• NX-series CPU Unit
• NX-series Communications Coupler Unit
When a CPU Unit and a Communications Coupler Unit are used together, you can unify the methods for installing, wiring, and setting up NX Units, and eventually reduce design costs.
Example:
NX-series NX1P2 CPU Unit
NX Units: NX-series System Units
*1
*1. For whether NX Units can be connected to the CPU Unit or Communications Coupler Unit to be used, refer to
the user’s manual for the CPU Unit or Communications Coupler Unit to be used.
1 - 2
NX-series EtherCAT Coupler Unit
NX-series System Units User’s Manual (W523)
1 Features and System Configuration
Simple I/O Wiring with a Screwless Clamping Terminal Block
1-1 Features and Types of Sys-
The terminal block is a screwless clamping terminal block.
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.
1-1-2 System Unit Types
The types of System Units are as follows.
Typ e Purpose
System Units These Units are used as required to build a CPU Rack or
Additional NX Unit Power Supply Unit Additional I/O Power Sup­ply Unit
I/O Power Supply Connec­tion Unit
Shield Connection Unit This Unit is used to ground more than one shield from
tem Units
1

1-1-2 System Unit Types

a Slave Terminal. This Unit is used when the NX Unit power supply is insuffi-
cient. This Unit is used when the I/O power supply is insufficient or to separate the I/O power supply in the CPU Rack or Slave Terminal. This Unit must be used when the type of the I/O power supply for the NX Unit that is used in a CPU Rack is the supply from NX bus. This Unit is used when the I/O power supply terminals are insufficient for connections to external I/O devices.
external I/O connections to the same ground.
Refer to 1-3 Model List on page 1-7 for details on System Unit models.
NX-series System Units User’s Manual (W523)
1 - 3
1 Features and System Configuration
(A) NX-series CPU Unit
EtherCAT Slave Terminal
(D) Support Software Sysmac Studio
Built-in EtherCAT port
Connect to built-in EtherNet/IP port
(B) NX Units
● CPU Rack
NX1P2-
(C) End Cover
EtherCAT
NX Units
EtherCAT Coupler Unit

1-2 System Configuration

NX Unit NX-series System Units can be connected to the following Units.
• NX-series CPU Unit
• NX-series Communications Coupler Unit
The following explains the system configuration for each NX Unit connection destination.

1-2-1 System Configuration in the Case of a CPU Unit

The following figure shows a system configuration when a group of NX Units is connected to an NX-series CPU Unit.
You can connect the EtherCAT Slave Terminal to the built-in EtherCAT port on the CPU Unit. Refer to 1-2-2 System Configuration of Slave Terminals on page 1-5 for details on the system configuration of a Slave Terminal.
Symbol Item Description
(A) NX-series CPU Unit The Unit that serves as the center of control for a Machine Automation Con-
troller. It executes tasks, refreshes I/O for other Units and slaves, etc. NX Units
(B) NX Units The NX Units perform I/O processing with connected external devices. The
(C) End Cover The End Cover is attached to the end of a CPU Rack.
can be connected to an NX1P2 CPU Unit.
NX Units exchange data with the CPU Unit through I/O refreshing. A maximum of eight NX Units can be connected to an NX1P2 CPU Unit.
1 - 4
NX-series System Units User’s Manual (W523)
1 Features and System Configuration
(E) Support Software
*1
(F) ESI files
.xml
.xml
*1. The connection method for the Support Software depends on the model of the CPU Unit or
Industrial PC.
(A) EtherCAT master
NJ/NX-series CPU Unit, NY-series Industrial PC or master from another manufacturer
EtherCAT port
(E) Support Software
(G) Communications cable
Ethernet cables
Peripheral USB port
• EtherCAT Slave Terminal
(F) ESI files
Connection to peripheral USB port on EtherCAT Coupler Unit
(B) NX-series
EtherCAT Coupler Unit NX-ECC20
(D) End Cover
(C) NX Units
Symbol Item Description
(D) Support Software
(Sysmac Studio)
A computer software application for setting, programming, debugging, and troubleshooting NJ/NX/NY-series Controllers.
For an NX1P2 CPU Unit, this application performs setting operation by making a connection to a built-in EtherNet/IP port.
1-2 System Configuration
1-2-2 System Configuration of Slave Terminals
A building-block remote I/O slave provided with a group of NX Units connected to a Communications Coupler Unit is generically called a Slave Terminal.
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.
The following figure shows an example of the system configuration when an EtherCAT Coupler Unit is used as a Communications Coupler Unit.
Refer to the user’s manual for the connected Communications Coupler Unit for details on how to con­figure the system when any other type of Communications Coupler Unit is used.
1

1-2-2 System Configuration of Slave Terminals

NX-series System Units User’s Manual (W523)
1 - 5
1 Features and System Configuration
Let-
ter
(A)
EtherCAT master
Item Description
*1
The EtherCAT master manages the network, monitors the status of slaves, and exchanges I/O data with slaves.
(B) EtherCAT Coupler Unit The EtherCAT Coupler Unit serves as an interface for process data communi-
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.
(C) NX Units The NX Units perform I/O processing with connected external devices.
The NX Units perform process data communications with the EtherCAT mas-
ter through the EtherCAT Coupler Unit. (D) End Cover The End Cover is attached to the end of the Slave Terminal. (E)
Support Software
*2*3
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. (F) ESI (EtherCAT Slave
Information) file
The ESI file contains information that is unique to the EtherCAT Slave Termi-
nal in XML format. You can load the ESI file into the Support Software to easily
allocate Slave Terminal process data and configure other settings.
The ESI files for OMRON EtherCAT slaves are already installed in the Support
Software. You can update the Support Software to get the ESI files for the
most recent models. (G) Communications cable Use a double-shielded cable with aluminum tape and braiding of Ethernet cat-
egory 5 (100Base-TX) or higher, and use straight wiring.
*1. An EtherCAT Slave Terminal cannot be connected to any of the OMRON CJ1W-NC81 or CJ1W-NC82 Po-
sition Control Units even though they can operate as EtherCAT masters.
*2. The term Support Software indicates software that is provided by OMRON. If you connect to a master from
another company, use the software tool corresponding to that master.
*3. Refer to 1-4 Support Software on page 1-10 for information on Support Software.
1 - 6
NX-series System Units User’s Manual (W523)
1 Features and System Configuration
NX - -     
Unit type
PD : Additional NX Unit Power Supply Unit PF : Additional I/O Power Supply Unit PC : I/O Power Supply Connection Unit
NX Unit power supply voltage
0 : No NX Unit power supply function 1 : 24 VDC, no-isolation
I/O power supply voltage and maximum current of I/O power supply
0 : No I/O power supply function 6: 5 to 24 VDC, 4 A 7: 5 to 24 VDC, 10 A
I/O power supply connection terminal
0 : No I/O power supply connection terminal 1 : IOG 2 : IOV 3 : IOG/IOV
Additional function
0 : Not supported.
1-3 Model List
1-3-1 Model Notation
The System Unit models are assigned based on the following rules.
Model notation for the power supply-related Units (Additional NX Unit Power Supply Unit, Additional I/O Power Supply Unit and I/O Power Supply Connection Unit) differs from that of System Units other than power supply-related Units.
Power Supply-related Units

1-3 Model List

1

1-3-1 Model Notation

NX-series System Units User’s Manual (W523)
1 - 7
1 Features and System Configuration
    
A
System Units Other Than Power Supply-related Units
NX - - 
Unit type
END : End Cover TBX : Shield Connection Unit
dditional number
01 : Additional number

1-3-2 Additional NX Unit Power Supply Unit

This section shows a list of Additional NX Unit Power Supply Units.
Refer to A-1-2 Additional NX Unit Power Supply Unit on page A-3 for details.
Screwless Clamping Terminal Block, 12 mm Width
Model
NX-PD1000 24 VDC 10 W max.
Rated power supply
voltage
NX Unit power supply capacity Reference

1-3-3 Additional I/O Power Supply Unit

This section shows a list of Additional I/O Power Supply Units.
Refer to A-1-3 Additional I/O Power Supply Unit on page A-6 for details.
Screwless Clamping Terminal Block, 12 mm Width
P. A -4
Model
NX-PF0630 5 to 24 VDC 4 A
NX-PF0730 5 to 24 VDC
*1. When the Additional I/O Power Supply Unit is connected to an NX-series NX1P2 CPU Unit,
the value will be 4 A max. because of the restriction on the CPU Rack system configuration.
Rated power supply
voltage
Maximum current of I/O power
supply
*1
10 A
Reference
P. A -7
P. A -9
1 - 8
NX-series System Units User’s Manual (W523)
1 Features and System Configuration
1-3-4 I/O Power Supply Connection Unit
This section shows a list of I/O Power Supply Connection Units.
Refer to A-1-4 I/O Power Supply Connection Unit on page A-11 for details.
Screwless Clamping Terminal Block, 12 mm Width
Model
NX-PC0020 IOV: 16 terminals
NX-PC0010 IOG: 16 terminals P. A-14
NX-PC0030 IOV: 8 terminals
Number of I/O power supply
terminals
IOG: 8 terminals
Current capacity of I/O power supply terminal
4 A
/terminal max. P. A-12

1-3-5 Shield Connection Unit

This section shows a list of Shield Connection Units.
Refer to A-1-5 Shield Connection Unit on page A-18 for details.
Reference
P. A -1 6
1-3 Model List
1

1-3-4 I/O Power Supply Connection Unit

Screwless Clamping Terminal Block, 12 mm Width
Model Number of shield terminals
NX-TBX01 14 terminals
(The following two terminals are functional ground terminals.)
Reference
P. A -1 9
NX-series System Units User’s Manual (W523)
1 - 9
1 Features and System Configuration

1-4 Support Software

The Support Software that is used depends on the system configuration.
Support Software for a System Configured with a CPU Unit
If your system is configured by connecting an NX Unit to a CPU Unit, the Sysmac Studio is used as the Support Software.
Support Software for a System Configured with a Slave Terminal
If your system is configured by connecting an NX Unit to a Communications Coupler Unit, refer to the user’s manual for the Communications Coupler Unit for information on the Support Software.
Refer to A-5 Version Information with CPU Units on page A-26 or A-6 Version Information with Commu- nications Coupler Units on page A-27 for information on the Support Software versions.
1 - 10
NX-series System Units User’s Manual (W523)
Specifications
This section describes the general specifications and individual specifications of Sys­tem Units.
2-1 General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-2 Individual Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2
NX-series System Units User’s Manual (W523)
2 - 1
2 Specifications

2-1 General Specifications

This table shows the general specifications of all System Units.
Item Specification
Enclosure
Grounding methods
Operating environ­ment
Applicable standards
Ambient operating temperature
Ambient operating humidity
Atmosphere
Ambient storage temperature
Altitude
Pollution degree
Noise immunity
Overvoltage category
EMC immunity level
Vibration resistance
Shock resistance
Insulation resistance
Dielectric strength
*2
*1. Varies with NX Unit Models. Refer to A-1 Data Sheet on page A-2 for the specifications of NX Units.
*2. Refer to the OMRON website (www.ia.omron.com) or ask your OMRON representative for the most recent
applicable standards for each model.
Mounted in a panel Ground of 100 Ω or less 0 to 55°C 10 to 95% RH (with no icing or condensation) Must be free from corrosive gases.
−25 to 70°C (with no icing or condensation) 2,000 m max. Pollution degree 2 or less: Conforms to JIS B 3502 and IEC 61131-2. Conforms to IEC 61000-4-4, 2 kV (power supply line) Category II: Conforms to JIS B 3502 and IEC 61131-2. Zone B 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
*1
*1
cULus: Listed (UL508), ANSI/ISA 12.12.01, EU: EN 61131-2, C-Tick, KC: KC Registration, NK, LR
2
2 - 2
NX-series System Units User’s Manual (W523)
2 Specifications
2-2 Individual Specifications
Refer to A-1 Data Sheet on page A-2 for the specifications of individual System Units.

2-2 Individual Specifications

2
NX-series System Units User’s Manual (W523)
2 - 3
2 Specifications
2 - 4
NX-series System Units User’s Manual (W523)
Part Names and Functions
This section describes the names and functions of the System Unit parts.
3-1 Names of Power Supply-related Unit Parts . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3-1-1 Screwless Clamping Terminal Block Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3-1-2 Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3-2 Names of Shield Connection Unit Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3-2-1 Screwless Clamping Terminal Block Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3-2-2 Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
3
NX-series System Units User’s Manual (W523)
3 - 1
3 Part Names and Functions
(H)
(C)(D)
(I)
(G)
(F)
(C)
(A)
(E)
(C)(E)
(C)
(B)
(B)
3-1 Names of Power Supply-related Unit
Parts
This section describes the names and functions of power supply-related Unit parts (Additional NX Unit Power Supply Unit, Additional I/O Power Supply Unit, and I/O Power Supply Connection Unit).

3-1-1 Screwless Clamping Terminal Block Type

NX Units (12 mm Width)
3 - 2
Letter Name Function
(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
(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) DIN Track contact plate This plate is used to contact the ground terminal with a DIN Track. It is
(I) Unit specifications The specifications of the Unit are given.
the Unit
The locations where markers are attached. The markers made by OMRON are installed for the factory setting. Commercially available markers can also be installed.
Refer to 4-1-2 Attaching Markers on page 4-4
The protrusions to hold when removing the Unit.
Refer to 3-1-2 Indicators on page 3-6
The number of terminals depends on the type of Unit.
only on the Units that have ground terminals.
NX-series System Units User’s Manual (W523)
3 Part Names and Functions
8-terminal type
(B)
16-terminal type
(C)
(A)
A1
A2
A3
A4
A5
A6
A7
A8
B1
B2
B3
B4
B5
B6
B7
B8
A1
A2
A3
A4
A5
A6
A7
A8
B1
B2
B3
B4
B5
B6
B7
B8
(D)
8-terminal type 16-terminal type
A1
A2
A3
A4
A5
A6
A7
A8
B1
B2
B3
B4
B5
B6
B7
B8
A1
A2
A3
A4
A5
A6
A7
A8
B1
B2
B3
B4
B5
B6
B7
B8
(B)
(C)
(A)
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. Use the 8-terminal type and the 16-terminal type for the power supply-related Units.
NX-TB2
3-1 Names of Power Supply-related Unit Parts
3
3-1-1 Screwless Clamping Terminal Block Type
NX-TB1
NX-series System Units User’s Manual (W523)
3 - 3
3 Part Names and Functions
Additional Information
Letter Name Function
(A) Terminal number indi-
cations
(B) Release holes Insert a flat-blade screwdriver into these holes to connect and remove the
(C) Terminal holes The wires are inserted into these holes. (D) Ground terminal mark This mark indicates ground terminals. It is only on the NX-TBC2.
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.
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.
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 power supply-related 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 does not have terminal holes and release holes for following terminal numbers.
A2, A4, A6, A8, B2, B4, B6, and B8
3 - 4
NX-series System Units User’s Manual (W523)
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-PD1000 NX-TBA081 8 Not provided 4 A
NX-PF0630 NX-TBA081 Not provided 4 A
NX-PF0730 NX-TBA082 NX-PC NX-TBA161 16 4 A
Model
NX-TBC082 Provided 10 A
NX-TBA082 10 A
NX-TBA162 10 A
Number of termi-
nals
Ground terminal
mark
3-1 Names of Power Supply-related Unit Parts
Current capacity
3
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-4 List of Screwless Clamping Terminal Block Models on page A-25 for information on the models of terminal blocks.
NX-series System Units User’s Manual (W523)
3 - 5
3 Part Names and Functions
Additional I/O
Power Supply Unit
I/O Power Supply
Connection Unit
Additional NX Unit
Power Supply Unit
(A)
(B)

3-1-2 Indicators

There are the indicators to show the current operating status of the NX Unit on the Additional NX Unit Power Supply Unit, Additional I/O Power Supply Unit, and I/O Power Supply Connection Unit.
The following indicator patterns are available depending on the Unit types.
Letter Name Function
(A) Model number indications The model numbers of the NX Unit are displayed.
Example: "PD1000" in the case of NX-PD1000
(B) Indicators The indicator shows the current operating status of the NX Unit.
The following section describes the specifications of each indicator.
3 - 6
NX-series System Units User’s Manual (W523)
TS Indicator
This indicator shows the current status of the Additional NX Unit Power Supply Unit, Additional I/O Power Supply Unit, or I/O Power Supply Connection Unit and its communications status with the CPU Unit or Communications Coupler Unit.
This indicator shows the NX Unit power status of an Additional NX Unit Power Supply Unit.
The meanings of light statuses are described as follows:
3 Part Names and Functions
3-1 Names of Power Supply-related Unit Parts
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 Unit.
• Waiting for initialization to start
UNIT PWR Indicator
This is mounted only on an Additional NX Unit Power Supply Unit.
3
3-1-2 Indicators
Color Status Description
Green Lit The Unit power is supplied.
Not lit The Unit power is not supplied.
NX-series System Units User’s Manual (W523)
3 - 7
3 Part Names and Functions
This indicator shows the I/O power supply status of an Additional I/O Power Supply Unit.
I/O PWR Indicator
This is mounted only on the Additional I/O Power Supply Unit.
Color Status Description
Green Lit The I/O power is supplied.
Not lit The I/O power is not supplied.
3 - 8
NX-series System Units User’s Manual (W523)
3 Part Names and Functions
(C)(D)
(H)
(G)
(F)
(C)
(A)
(E)
(C)(E)
(C)
(B)
(B)
(H)
3-2 Names of Shield Connection Unit
Parts
This section describes the names and functions of the Shield Connection Unit parts.
3-2-1 Screwless Clamping Terminal Block Type
NX Units (12 mm Width)

3-2 Names of Shield Connection Unit Parts

3

3-2-1 Screwless Clamping Terminal Block Type

Letter Name Function
(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
(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) DIN Track contact plate This plate is used to contact the ground terminal with a DIN Track. It is
(I) Unit specifications The specifications of the Unit are given.
NX-series System Units User’s Manual (W523)
the Unit
The locations where markers are attached. The markers made by OMRON are installed for the factory setting. Commercially available markers can also be installed.
Refer to 4-1-2 Attaching Markers on page 4-4
The protrusions to hold when removing the Unit.
Refer to 3-2-2 Indicators on page 3-12
The number of terminals depends on the type of Unit.
only on the Units that have ground terminals.
3 - 9
3 Part Names and Functions
A1
A2
A3
A4
A5
A6
A7
A8
B1
B2
B3
B4
B5
B6
B7
B8
(B)
(C)
(A)
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. Use the 16-terminal type for the Shield Connection Unit.
NX-TBC162
(A)
A1
A2
A3
A4
A5
A6
A7
A8
NX-TBA161
B1
B2
B3
B4
B5
B6
B7
B8
(B)
(C)
(D)
3 - 10
NX-series System Units User’s Manual (W523)
3 Part Names and Functions
Additional Information
Letter Name Description
(A) Terminal number indi-
cations
(B) Release holes Insert a flat-blade screwdriver into these holes to connect and remove the
(C) Terminal holes The wires are inserted into these holes. (D) Ground terminal mark This mark indicates ground terminals. It is only on the NX-TBC2.
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 Shield Connection Unit.
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.
wires.
3-2 Names of Shield Connection Unit Parts
3
3-2-1 Screwless Clamping Terminal Block Type
The Shield Connection Unit is only compatible with the 16-terminal type. You cannot use a ter­minal block with a different number of terminals.
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-TBX01 NX-TBA161 16 Not provided 4 A
Model
NX-TBC162 Provided 10 A
Refer to A-4 List of Screwless Clamping Terminal Block Models on page A-25 for information on the models of terminal blocks.
Number of termi-
nals
Ground terminal
mark
Current capacity
NX-series System Units User’s Manual (W523)
3 - 11
3 Part Names and Functions
This indicator shows the current status of the Shield Connection Unit and its communications status with the CPU Unit or Communications Coupler Unit.

3-2-2 Indicators

There are the indicators to show the current operating status of the NX Unit on the Shield Connection Unit.
(A)
(B)
Letter Name Description
(A) Model number indications The model numbers of the NX Unit are displayed.
(B) TS indicator The indicator shows the current operating status of the NX Unit.
Example: "TBX01" in the case of NX-TBX01
The following section describes the specifications of the TS indicator.
TS Indicator
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
•Initializing
• Restarting is in progress for the Unit.
• Downloading
all I/O Units occurred.
3 - 12
Flashing at 1-s intervals.
---
Not lit • No Unit power supply
A communications error or other NX bus-related error that is common to all I/O Units occurred.
• Restarting is in progress for the Unit.
• Waiting for initialization to start
NX-series System Units User’s Manual (W523)
Installation and Wiring
This section describes how to install the NX Units, the types of power supplies used in the CPU Rack or 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-1-4 Installation Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4-2 Wiring the Power Supply to the CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4-2-1 Power Supply Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4-2-2 Supplying Each Power Supply and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4-2-3 Power Supply-related Units and Wiring Methods . . . . . . . . . . . . . . . . . . . . . . .4-11
4-3 Wiring the Power Supply to the Slave Terminal . . . . . . . . . . . . . . . . . . . . 4-14
4-3-1 Power Supply Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
4-3-2 Supplying Each Power Supply and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
4-3-3 Power Supply-related Units and Wiring Methods . . . . . . . . . . . . . . . . . . . . . . 4-17
4-4 Wiring of Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
4-5 Wiring the Additional Power Supply Units . . . . . . . . . . . . . . . . . . . . . . . . 4-21
4-5-1 Wiring the Additional NX Unit Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . 4-22
4-5-2 Wiring the Additional I/O Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
4-5-3 Protective Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
4-6 Wiring the I/O Power Supply Connection Unit . . . . . . . . . . . . . . . . . . . . . 4-33
4
4-7 Wiring the Shield Connection Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
4-8 Wiring the Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38
4-8-1 Wiring to the Screwless Clamping Terminal Block . . . . . . . . . . . . . . . . . . . . . 4-38
NX-series System Units User’s Manual (W523)
4 - 1
4 Installation and Wiring
Precautions for Safe Use
Example: NX Unit (12 mm width)
NG NG

4-1 Installing NX Units

This section describes how to install NX Units.
Refer to the user's manual for the CPU Unit or Communications Coupler Unit to which NX Units are connected 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 touch the pins in the NX bus connector on the Unit. Dirt may adhere to the pins in the NX bus connector, which may result in malfunctions.
• Do not write on an NX Unit with ink within the restricted 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 CPU Rack or Slave Terminal. Refer to the user’s manual for the connected CPU Unit or Communications Coupler Unit for the restricted region of CPU Unit and Communications Coupler Unit.
Restricted region
(shaded portion)
4 - 2
NX-series System Units User’s Manual (W523)
4 Installation and Wiring
Precautions for Correct Use
• 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.
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.
Unit hookup guides
4-1 Installing NX Units
Unit hookup guides
2 Slide the NX Unit in on the hookup guides.
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.
4
4-1-1 Installing NX Units
After you mount the NX Unit, make sure that it is locked to the DIN Track.
NX-series System Units User’s Manual (W523)
4 - 3
4 Installation and Wiring
Additional Information
• 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 for the CPU Unit to which NX Units can be connected for informa­tion on how to mount the CPU Unit, and how to mount NX Units to the CPU Unit.
• Refer to the user's manual for 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.

4-1-2 Attaching Markers

Markers can be attached to the NX Units and terminal blocks on 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.
Markers
The marker attachment locations on the NX Units depend on the type of external connection terminals.
Refer to the user’s manual for the NX Units that you will use for the marker attachment locations.
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NX-series System Units User’s Manual (W523)
4 Installation and Wiring
Marker
Marker attachment location
Marker
Marker attachment location
<Terminal block><NX Unit>
Installation Method
Insert the protrusions on the markers into the marker attachment locations on the NX Units and ter­minal blocks on NX Units.
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.
4-1 Installing NX Units
4
Product name
Markers UC1-TMF8 DEK 5/8 Special marker printer UM EN BLUEMARK X1 PrintJet PRO
Manufactured by Phoenix Contact Manufactured by Weidmuller
Model number
The markers made by OMRON cannot be printed on with commercially available special printers.
4-1-2 Attaching Markers
NX-series System Units User’s Manual (W523)
4 - 5
4 Installation and Wiring
Precautions for Safe Use
Precautions for Correct Use
Flat-blade screwdriver
DIN track mounting hook

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.
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.
Protrusion for removing the Unit
Protrusion for removing the Unit
• 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.
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NX-series System Units User’s Manual (W523)
4-1-4 Installation Orientation
Upper
Lower
(A)
(B)
(E)
Upper
Lower
(C)
(F)
(D)
The following explains the installation orientation for each NX Unit connection destination.
Installation Orientation in the Case of a CPU Unit
Orientation is possible only in the upright installation orientation.
4 Installation and Wiring
4-1 Installing NX Units
However, there are restrictions on the specifications depending on the NX Units to be used.
Refer to the user’s manuals for the NX Units and System Units that you will use for details on restric­tions.
Installation Orientation in the Case of a Slave Terminal
Orientation is possible in the following six directions.
(A) is the upright orientation and (B) to (F) are other orientations.
4

4-1-4 Installation Orientation

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.
NX-series System Units User’s Manual (W523)
4 - 7
4 Installation and Wiring
Precautions for Safe Use
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.
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NX-series System Units User’s Manual (W523)
4 Installation and Wiring
4-2 Wiring the Power Supply to the CPU
Unit
This section describes the methods of power supplying and wiring with NX Unit in a CPU Rack when connecting NX Unit with NX-series NX1P2 CPU Unit.
4-2-1 Power Supply Types
There are the following two types of power supplies that supply power to the CPU Rack of the NX1P2 CPU Units.
I/O power supply is also required to drive the built-in I/O output circuit. However, only the supply to the NX Unit is described in this section.
For the I/O power supply to the built-in I/O, refer to the hardware user’s manual for the CPU Unit to which NX Units are connected.
Power supply
name
Unit power sup­ply
I/O power sup­ply
This is the power supply for generating the internal power supply required for the CPU Rack to operate.
This power supply is connected to the Unit power supply terminals on the CPU Unit.
From the Unit power supply, the internal power supply circuit in the CPU Unit generates the internal circuit power supply, Option Board power supply and NX Unit power supply.
The internal circuits of the NX Unit operates on the NX Unit power supply.
The NX Unit power supply is supplied to the NX Units in the CPU Rack through the NX bus connectors.
This power supply is used for driving the I/O circuits of the NX Units and for the connected external devices.
There are the following two I/O power supply methods. Either supply method used depends on each model of NX Unit.
• Supply from the NX bus
• Supply from external source

Refer to 4-2-2 Supplying Each Power Supply and Wiring on page 4-9 for the details on the power supply methods.

4-2 Wiring the Power Supply to the CPU Unit

4
Description

4-2-1 Power Supply Types

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
NX Unit power supply
NX-series System Units User’s Manual (W523)
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 CPU Unit or Additional NX Unit Power Supply Units.
Description
4 - 9
4 Installation and Wiring
Unit power
supply
(24 VDC)
To external devices
To external
devices
End Cover
I/O power supply terminals
External
output device
I/O power supply (Supply from external source)
NX Unit
0
1
IOV IOV
23
IOV
IOV
IOG IOG
IOG IOG
UG
Additional NX Unit Power Supply Unit
UV
UG
A1
A8
B1
B8
(Example) DC Input Unit
NC
NC
Two-wire
sensor
Three-wire
sensor
Additional I/O
Power Supply Unit
IOV
IOG
A1
A8
B1
B8
IOVIOV
IOGIOG
24 VDC
Unit power
supply
24 VDC
I/O power
supply
A1
B1
A8 B8
Unit power supply terminals
NX-series NX1P2 CPU Unit
Internal power
supply circuit
DC
Input Unit
NX Unit power supply
NX Unit power supply
IOV
IOG
The I/O power supply is not separated.
Additional NX Unit Power Supply Unit
Additional I/O Power Supply Unit
The I/O power supply is separated.
Additional I/O Power Supply Unit
I/O power
supply
I/O power
supply
Power supply
name
I/O power sup­ply
This power is supplied by one of the following two methods.
• Supply from the NX bus
Description
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 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.
Refer to data sheet of the user’s manual for the supply methods that you will use for each NX Unit models.
Refer to A-1 Data Sheet on page A-2 for the supply method for each System Unit model.
The following are wiring diagrams (examples) for each power supply.
UV
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NX-series System Units User’s Manual (W523)
4 Installation and Wiring
Precautions for Correct Use
Additional Information
Unit power
supply
Internal power
supply circuit
Unit power supply terminals
I/O power
supply
Internal power
supply circuit
The total power consumption from the NX Unit power supply is within the NX Unit power supply capacity.
The total power consumption from the NX Unit power supply is within the NX Unit power supply capacity.
NX Unit
NX Unit power supply
Additional NX Unit Power Supply Unit
NX Unit power supply
Separated by Additional NX Unit Power Supply Unit
Additional I/O Power Supply Unit
NX-series NX1P2 CPU Unit
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 hardware user’s manual for the CPU Unit to which Units are connected for infor­mation on the designing of the power supply for the CPU Rack.
4-2-3 Power Supply-related Units and Wiring Methods
The CPU Unit supplies the NX Unit power to the NX Units in the CPU Rack.
There are the following types of NX-series power supply-related Units other than CPU Unit.
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 CPU Rack exceeds the NX Unit power supply capacity of the CPU Unit.
4-2 Wiring the Power Supply to the CPU Unit
4

4-2-3 Power Supply-related Units and Wiring Methods

The I/O power supply for the Additional NX Unit Power Supply Unit is connected to the
NX-series System Units User’s Manual (W523)
NX Unit on the left through the NX bus connector.
4 - 11
4 Installation and Wiring
When the I/O power supply becomes the following states for the subsequent NX Units.
• When it exceeds 4 A
•
When it goes below the voltage specifications of the connected external devices
Case (a)
• When different I/O power supply voltage are used.
• When separating the power supply systems.
Case (b)
I/O power
supply
Unit power
supply
Separated by Additional I/O Power Supply Unit
I/O power
supply
Internal power
supply circuit
NX-series NX1P2 CPU Unit
*1. The NX Unit to which I/O power is supplied from the NX bus
I/O power
supply
Unit power
supply
Separated by Additional I/O Power Supply Unit
I/O power
supply
Internal power
supply circuit
NX-series NX1P2 CPU Unit
*1. The NX Unit to which I/O power is supplied from the NX bus
Additional I/O Power Supply Unit
Additional I/O Power Supply Unit
NX Unit
*1
Additional I/O Power Supply Unit
Additional I/O Power Supply Unit
NX Unit
*1
Unit name Function
Additional I/O Power Supply Unit
This NX Unit provides additional I/O power supply.
This Unit is used when the I/O power supply for the NX Unit connected to the CPU Unit is supplied through the NX bus.
Additionally 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 4 A
• 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
4 - 12
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.
NX-series System Units User’s Manual (W523)
Unit name Function
NX Unit
Example of NPN type
Not enough I/O power supply terminals
I/O Power Supply
Connection Unit
I/O power
supply
Unit power
supply
Internal power
supply circuit
IOV
DC Input Unit
(NPN type)
Two-wire sensor
(e.g., limit switch)
A1
A8
B1
B8
A1
A8
B1
B8
I/O Power Supply
Connection Unit
(16 IOV terminals)
A1
A8
B1
B8
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)
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
1
9
7
5
3
13
11
15
0
8
6
4
2
12
10
14
I/O power supply is not separated in I/O Power Supply Connection Unit
Additional I/O
Power Supply Unit
I/O power
supply
NX-series NX1P2 CPU Unit
*
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 Installation and Wiring
4-2 Wiring the Power Supply to the CPU Unit
* 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.
4
4-2-3 Power Supply-related Units and Wiring Methods
NX-series System Units User’s Manual (W523)
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4 Installation and Wiring
4-3 Wiring the Power Supply to the Slave
Terminal
This section describes how to supply power to the Slave Terminal and wiring.

4-3-1 Power Supply Types

There are the following two types of power supplies that supply power to the Slave Terminal.
Power supply
name
Unit power sup­ply
I/O power sup­ply
Description
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.
This power supply provides power to drive the I/O circuits of the Position Interface Units and it
provides power to external devices such as external encoders and sensors.
There are the following two I/O power supply methods. Either supply method used depends on
each model of NX Unit.
• Supply from the NX bus
• Supply from external source
Refer to 4-3-2 Supplying Each Power Supply and Wiring on page 4-15 for the details on the power supply methods.
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4 Installation and Wiring
4-3-2 Supplying Each Power Supply and Wiring
The supply method for each power supply to the NX Units is as follows.
Power supply
name
NX Unit power supply
I/O power sup­ply
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.
This power is supplied by one of the following two methods.
• 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.
Refer to data sheet of the user’s manual for the supply methods that you will use for each NX Unit models.
Refer to A-1 Data Sheet on page A-2 for the supply method for each System Unit model.
Description
4-3 Wiring the Power Supply to the Slave Terminal
4

4-3-2 Supplying Each Power Supply and Wiring

NX-series System Units User’s Manual (W523)
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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
To external devices
0
1
IOV IOV
23
IOV
IOV
IOG IOG
IOG IOG
UG
UV
UG
A1
A8
B1
B8
NC
NC
IOV
IOG
A1
A8
B1
B8
IOVIOV
IOG
IOG
A1
B1
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.
UV
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.
Always use separate power supplies for the Unit power supply and the I/O power supply. If
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NX-series System Units User’s Manual (W523)
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.
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
4-3-3 Power Supply-related Units and Wiring Methods
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 Unit.
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.
4-3 Wiring the Power Supply to the Slave Terminal
4

4-3-3 Power Supply-related Units and Wiring Methods

NX-series System Units User’s Manual (W523)
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.
4 - 17
4 Installation and Wiring
- 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
Unit name Function
Additional I/O Power Sup­ply Unit
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 - 18
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.
NX-series System Units User’s Manual (W523)
Unit name Function
I/O Power Supply Con­nection Unit
4 Installation and Wiring
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.
I/O power supply is not separated at the I/O Power Supply Connection Units.
Communications Coupler Unit
I/O power
supply
NX Unit
Internal
power supply
circuit
Additional I/O Power Supply Unit
I/O Power Supply Connection Units
4-3 Wiring the Power Supply to the Slave Terminal
Unit power
supply
I/O power
supply
Not enough I/O power supply terminals
Example of NPN type
B1
B8
DC Input Units
(NPN type)
A1
0
1 3
2
5
4
7
6
9
8
11
10
13
12
15
14
A8
Two-wire sensor*
(e.g., limit switch)
B1
B8
Brown (White) Blue (Black)
Three-wire sensor with NPN output*
(e.g., photoelectric sensor
or proximity sensor)
Black (White) Brown (Red) Blue (Black)
I/O Power Supply
Connection Unit
(16 IOV terminals)
A1
IOV IOV
IOV
IOV IOV
IOV IOV
IOV
A8
IOV
IOV IOV
IOV
IOV IOV
IOV IOV
IOV
B1
B8
I/O Power Supply
Connection Unit
(16 IOG terminals)
A1
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
A8
* 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.
4
4-3-3 Power Supply-related Units and Wiring Methods
NX-series System Units User’s Manual (W523)
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4 Installation and Wiring
Additional Information
Additional Information

4-4 Wiring of Grounding

This section describes how to ground the CPU Rack and the Slave Terminal.
Units with Functional Ground Terminals in CPU Rack
Some of the Units in a CPU Rack of the NX-series NX1P2 CPU Unit have the following functional ground terminals.
• CPU Unit
• Additional NX Unit Power Supply Unit
• Shield Connection Unit
A Shield Connection Unit is used to connect the shield when connecting to external input devices. You can ground more than one shield to the same ground pole to reduce the amount of wiring work for grounding.
Refer to the hardware user’s manual for the connected CPU Unit for the details on the ground terminals for the CPU Rack.
Units with Functional Ground Terminals in Slave Terminal
Some of the NX Units in a Slave Terminal have the following functional ground terminals.
• Communications Coupler Unit
• Additional NX Unit Power Supply Unit
• Shield Connection Unit
A Shield Connection Unit is used to connect the shield when connecting to external input devices. You can ground more than one shield to the same ground pole to reduce the amount of wiring work for grounding.
Refer to the user's manual for the connected Communications Coupler Unit for details on grounding the Slave Terminal.
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NX-series System Units User’s Manual (W523)
4 Installation and Wiring
Caution
Ground terminal
Peripheral cable
24 V
Peripheral device (e.g. computer)
No-isolation DC power supply (internal power supply circuit)
NX bus power supply
0 V
Unit power supply
Communications Coupler Unit
4-5 Wiring the Additional Power Supply
Units
This section describes how to wire the terminals on the Additional Power Supply Units.
WARNING
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.
When you connect a computer or other peripheral device to any of the following NX Units, ground the 0 V side of an external power supply (Unit power supply) or do not ground it at all.
• Communications Coupler Unit with non-isolated type internal power supply circuits
• Communications Coupler Unit that is connected to a non-isolated type Additional NX Unit Power Supply Unit

4-5 Wiring the Additional Power Supply Units

4
Depending on how the peripheral device is grounded, the external power supply (Unit power sup­ply) may be shorted. Never ground the 24 V side of the power supply as shown in the figure below.
<Grounding that causes a 24-V power supply to short>
NX-series System Units User’s Manual (W523)
4 - 21
4 Installation and Wiring

4-5-1 Wiring the Additional NX Unit Power Supply Unit

This section describes how to wire Additional NX Unit Power Supply Unit.
Wiring Terminals
• Unit power supply terminals
• Functional ground terminals
Wiring Examples
The Unit power supply is connected to the Unit power supply terminal (UV/UG).
You can use the unwired terminals of the Unit power supply terminals for through-wiring to an Additional NX Unit Power Supply Unit, to other CPU Units to which NX Unit can be connected or to the Unit power supply terminals on another Communications Coupler Unit.
Make the current supplied from the unwired terminals meet the following conditions.
Current supplied from unwired terminals ≤ Current capacity of power supply terminal - Current con­sumption of Additional NX Unit Power Supply Unit block
Refer to Required Power Supply Capacity on page 4-23 for information on the block.
Additional NX Unit
Power Supply Unit
24 VDC Unit power supply
Ground of 100 Ω or less
NX-PD1000
A1 B1
UV UV
UG UG
NC NC
A8 B8
Through-wiring for unwired terminals
4 - 22
Ground the functional ground terminal to 100 Ω or less.
NX-series System Units User’s Manual (W523)
Precautions for Correct Use
Power Supply Used
4 Installation and Wiring
24 VDC power is supplied to the Unit power supply terminals. The power supply voltage range for the Unit power supplies is as follows.
Model Power supply voltage range
NX-PD1000 20.4 to 28.8 VDC
Use an SELV power supply that meets the following conditions for the Unit power supply.
• Has overcurrent protection.
• Has double or reinforced insulation between the input and output.
• Has an output voltage that falls within the power supply voltage range for the Unit power supply.
We recommend the following power supply.
Recommended power supply in a CPU Rack: Model S8VK series (Omron)
Recommended power supply in a Slave Terminal: Model S8VK series or Model S8JX series (Omron)
• Use the same Unit power supply to supply power to the entire CPU Rack. If you supply power from different power supplies, differences in electrical potential may cause unex­pected currents in the NX Unit power supply, which may result in failure or malfunction.
• Use the same Unit power supply to supply power to the entire Slave Terminal. If you supply power from different power supplies, differences in electrical potential may cause unex­pected currents in the NX Unit power supply, which may result in failure or malfunction.
4-5 Wiring the Additional Power Supply Units
4
4-5-1 Wiring the Additional NX Unit Power Supply Unit
Required Power Supply Capacity
The equation for the Unit power supply capacity in the CPU Rack and in the Slave Terminal is as follows.
Equation in a CPU Rack
<Equation>
The equation for the Unit power supply capacity in the CPU Rack of NX1P2 CPU Unit is as follows.
Unit power supply capacity in the CPU Rack = The total power capacity from Unit power supply on each block
The equation for the Unit power supply capacity on each block in the CPU Rack is as follows.
NX-series System Units User’s Manual (W523)
4 - 23
4 Installation and Wiring
Precautions for Correct Use
• Required Unit power supply capacity of each block in the CPU Unit = (A + B)/C
• Unit power supply capacity of Additional NX Unit Power Supply Unit block = (D + E)/F
(A): Unit power consumption of a CPU Unit
(B): The total power consumption from the NX Unit power supply that is required by the NX Units that are connected to
the CPU Unit
(C): The NX Unit power supply efficiency of the CPU Unit
(D): NX Unit power consumption of the additional NX Unit Power Supply Unit
(E): Total power consumption from the NX Unit power supply that is required by the NX Units that are connected to the
Additional NX Unit Power Supply Unit
(F): NX Unit power supply efficiency of the Additional NX Unit Power Supply Unit
<Block>
The following shows the Unit that supplies NX Unit power and its supplying range. For example, the CPU Rack in the following diagram is configured with two blocks: the CPU Unit block and the Addi­tional NX Unit Power Supply Unit block.
Additional NX Unit Power Supply Unit block
NX Unit connected to the Additional NX Unit Power Supply Unit
NX Unit power supplyNX Unit power supply
Unit power supply terminals
Additional NX Unit Power Supply Unit
End Cover
Unit Power
Supply
CPU Unit block
NX-series NX1P2 CPU Unit
Internal power
supply circuit
Unit power supply terminals
NX Unit connected to the CPU Unit
Internal power supply circuit
The total Unit power supply capacity for these two blocks is the power supply capacity that the CPU Rack requires.
Select a Unit power supply with sufficient capacity by considering the inrush current when the power is turned ON. Sometimes, the Unit power supply may not be turned ON caused by inrush current when the power is turned ON.
4 - 24
NX-series System Units User’s Manual (W523)
4 Installation and Wiring
Communications Coupler Unit block
Additional NX Unit Power Supply Unit block
Unit power supply terminals
NX Unit connected to the Communications Coupler Unit
NX Unit connected to the Additional NX Unit Power Supply Unit
Internal power supply circuit
Unit power supply terminals
End Cover Additional NX Unit Power Supply Unit
NX Unit power supply NX Unit power supply
Unit power
supply
Commu­nications Coupler Unit
Equation in the Slave Terminal
<Equation>
The equation for the Unit power supply capacity in the Slave Terminal is as follows.
Unit power supply capacity in the Slave Terminal = The total power capacity from Unit power supply on each block
The equation for the Unit power supply capacity on each block in the Slave Terminal is as follows.
Unit power supply capacity requirement for each block = ((A) + (B))/(C)
(A): The NX Unit power consumption of the Unit that supplies NX Unit power
(B): The total power consumption from the NX Unit power supply that is required by the NX Units that are connected to
the Unit that supplies NX Unit power
(C): The NX Unit power supply efficiency of the Unit that supplies NX Unit power
4-5 Wiring the Additional Power Supply Units
<Block>
The following shows the Unit that supplies NX Unit power and its supplying range. For example, the Slave Terminal in the following diagram is configured with two blocks: the Communications Coupler Unit block and the Additional NX Unit Power Supply Unit block.
4
4-5-1 Wiring the Additional NX Unit Power Supply Unit
NX-series System Units User’s Manual (W523)
The total Unit power supply capacity for these two blocks is the power supply capacity that the Slave Terminal requires.
4 - 25
4 Installation and Wiring
Precautions for Correct Use
Two-wire sensor (e.g. limit switch)
Digital Input Unit
(NPN type) NX-ID5342
Additional I/O
Power Supply Unit
NX-PF0730
24 VDC I/O power supply
Three-wire sensor with NPN output (photoelectric sensor or proximity sensor)
Black (White) Brown (Red) Blue (Black)
Brown (White) Blue (Black)
A1 B1
A8 B8
0
8
2
10
4
12
6
14
1
9
3
11
5
13
7
15
IOG IOG
IOV IOV
IOG IOG
IOV IOV
A1
A8
B1
B8
Select a Unit power supply with sufficient capacity by considering the inrush current when the power is turned ON. Sometimes, the Unit power supply may not be turned ON caused by inrush current when the power is turned ON.

4-5-2 Wiring the Additional I/O Power Supply Unit

This section describes how to wire Additional I/O Power Supply Unit.
Wiring Terminals
I/O power supply terminals
Wiring Examples
The external power supply is connected to the A1 and A3 terminals of the I/O power supply terminals.
The other I/O power supply terminals can be used for power supply for connected external devices.
NPN Type (NX-ID5342)
4 - 26
NX-series System Units User’s Manual (W523)
PNP Type (NX-ID5442)
Additional Information
Two-wire sensor (e.g. limit switch)
Digital Input Unit
(PNP type) NX-ID5442
Additional I/O
Power Supply Unit
NX-PF0730
24 VDC I/O power supply
Three-wire sensor with PNP output (photoelectric sensor or proximity sensor)
Black (White) Brown (Red) Blue (Black)
Brown (White) Blue (Black)
A1 B1
A8 B8
0
8
2
10
4
12
6
14
1
9
3
11
5
13
7
15
IOG IOG
IOV IOV
IOG IOG
IOV IOV
A1
A8
B1
B8
4 Installation and Wiring
4-5 Wiring the Additional Power Supply Units
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.
4
4-5-2 Wiring the Additional I/O Power Supply Unit
NX-series System Units User’s Manual (W523)
4 - 27
4 Installation and Wiring
Precautions for Safe Use
Power Supply Used and Required Power Supply Capacity
Power Supply Used
5 to 24 VDC power is supplied to A1 and A3 terminals of the I/O power supply terminals.
Use an SELV power supply that meets the following conditions for the I/O power supply.
• Has overcurrent protection.
• Has double or reinforced insulation between the input and output.
• Has an output voltage of 5 to 24 VDC (4.5 to 28.8 VDC).
*1. Use an output voltage that is appropriate for the I/O circuits of the NX Units and the connected external
devices.
We recommend the following power supply.
*1
Recommended power supply in a CPU Rack: Model S8VK series (Omron)
Recommended power supply in a Slave Terminal: Model S8VK series or Model S8JX series (Omron)
Required Power Supply Capacity
The power supply capacity required by the I/O power supply to be connected is equal to the NX Unit power supply total power consumption that uses the same I/O power supply. Refer to Calculation Example for Power Supply Capacity of I/O Power Supply on page 4-30 for details on calculating the required power supply capacity.
However, if the inrush current occurs when a connected external device turns ON or OFF, do not allow the effective value of the I/O power supply current including the inrush current to exceed the following rated values.
Connecting destination of Additional I/O Power Sup-
ply Unit
NX1P2 CPU Unit Maximum current of I/O power
supply Current capacity of I/O power supply terminals
Communications Coupler Units
*1. When the Additional I/O Power Supply Unit is connected to the CPU Unit, use the I/O power supply current
at 4 A or less, regardless of the Additional I/O Power Supply Unit specifications.
Maximum current of I/O power supply
Current capacity of I/O power supply terminals
Rated item Rating
4 A max.
Less than the rating of Additional I/O Power Supply Unit
*1
Refer to A-1 Data Sheet on page A-2 for details on the ratings for Additional I/O Power Supply Unit.
Use the I/O power supply current for the CPU Rack of NX1P2 CPU Unit at 4 A or less. Using the currents that are outside of the specifications may cause failure or damage.
4 - 28
NX-series System Units User’s Manual (W523)
4 Installation and Wiring
Precautions for Correct Use
Irms = Ip ×D + Ia × (1-D)
22
(D = τ / T)
Irms
Ia
Ip
0A
T
τ
Do not allow the inrush current to exceed the values in the table below.
Connecting destination of Additional I/O Power Sup-
ply Unit
NX1P2 CPU Unit NX-PF0730
Communications Coupler Units
*1. When the Additional I/O Power Supply Unit is connected to the CPU Unit, the value will be as described on
this table, regardless of the specification of the Additional I/O Power Supply Unit.
Model of Additional I/O Power
Supply Unit
NX-PF0630 NX-PF0730 50 A 1 s NX-PF0630 20 A 1 s
Peak value Pulse width
20 A
*1
1 s
*1
Refer to the user's manual for the Communications Coupler Unit on the ratings for Communications Coupler Unit that can supply I/O power.
Calculating the effective value of the I/O power supply current
The following gives the equation to calculate the effective value of the I/O power supply current, Irms.
Ip: Peak inrush current (A)
Irms: Effective value of the I/O power supply current (A)
4-5 Wiring the Additional Power Supply Units
4
4-5-2 Wiring the Additional I/O Power Supply Unit
Ia: Total current consumption from I/O power supply (A)
D: Inrush current duty
τ: Inrush current pulse width (s)
T: Inrush current period (s)
For details on the current consumption from I/O power supply of the NX Units to be used, refer to the user's manual for individual NX Units.
Refer to the user’s manual for the connected CPU Unit or the Communications Coupler Unit for details on calculating current consumption from I/O power supply.
Select an I/O power supply with sufficient capacity by considering the inrush current when the power is turned ON. Sometimes, the I/O power supply may not be turned ON caused by inrush current when the power is turned ON.
NX-series System Units User’s Manual (W523)
4 - 29
4 Installation and Wiring
r
Calculation Example for Power Supply Capacity of I/O Power Supply
An example of calculating the required power supply capacity of the I/O power supply is given below.
(a) Configuration and Conditions
Additional I/O
Power Supply Unit
NX-PF0730
Digital Input
Unit
NX-ID3317
Digital
Output Unit
NX-OD3121
I/O power
supply
(24 VDC)
I/O power supply voltage 24 VDC Inputs Number of inputs used (that turn ON simultane-
ously) Current consumption of connected input devices 50 mA/point
Outputs Number of outputs (that turn ON simultaneously) 4 points
Load current of connected loads 125 mA/point Current consumption of connected output devices 50 mA/point
Connected
input
devices
Item Condition
Connected
output
devices
(loads)
End Cove
4 points
I/O power is supplied to the NX-ID3317 and NX-OD3121 from the NX bus.
(b) Unit Specifications
Model Current consumption from I/O power supply Input current
NX-PF0730 10 mA --­NX-ID3317 0 mA 6 mA/point NX-OD3121 10 mA ---
4 - 30
(c) Calculations
The current consumption from the I/O power supply for each Unit is calculated as follows.
NX-PF0730 Current Con­sumption
NX-ID3317 Current Consump­tion
NX-OD3121 Current Con­sumption
= (Current consumption from I/O power supply)
= 10 mA
= (Current consumption from I/O power supply) + (Input current x Number of
inputs used) + (Total current consumption of connected input devices)
= 0 mA + (6 mA x 4 points) + (50 mA x 4 points)
= 224 mA
= (Current consumption from I/O power supply) + (Total load current of con-
nected loads) + (Total current consumption of connected output devices)
= 10 mA + (125 mA x 4 points) + (50 mA x 4 points)
= 710 mA
NX-series System Units User’s Manual (W523)
4 Installation and Wiring
Precautions for Safe Use
The required power supply capacity for the I/O power supply is calculated as follows.
Power supply capacity of I/O power supply
4-5-3 Protective Devices
This section describes the protective devices to protect against short circuits and overcurrents of exter­nal circuits.
Overcurrent means the current that flows when an excessive load is connected and one of the following ratings is exceeded.
Unit name of supplying
Unit
Additional NX Unit Power Supply Unit
Additional I/O Power Sup­ply Unit
*1. When the Additional I/O Power Supply Unit is connected to the CPU Unit, use the I/O power supply current
at 4 A or less, regardless of the Additional I/O Power Supply Unit specifications.
= (Current consumed by NX-PF0730) + (Current consumed by NX-ID3317)
+ (Current consumed by NX-OD3121)
= 10 mA + 224 mA + 710 mA
= 944 mA
Connecting destination
of supplying Unit
NX1P2 CPU Unit or Com­munications Coupler Unit
NX1P2 CPU Unit Maximum current of I/O
Communications Coupler Unit
Rated item Rating
NX Unit power supply capacity
Current capacity of power supply terminal
power supply Current capacity of I/O
power supply terminals Maximum current of I/O
power supply Current capacity of I/O power supply terminals
Less than the rating of Additional NX Unit Power Supply Unit
4 A max.
Less than the rating of Additional I/O Power Supply Unit
*1
4-5 Wiring the Additional Power Supply Units
4

4-5-3 Protective Devices

Refer to the A-1 Data Sheet on page A-2 for details on the ratings for NX-series power sup­ply-related Units.
Refer to the hardware user’s manual for the connected CPU Unit or the user's manual for the con­nected Communications Coupler Unit for the ratings of the CPU Unit or the Communications Cou­pler Unit that can supply NX Unit power.
Refer to the user’s manual for the connected Communications Coupler Unit for the ratings of the Communications Coupler Unit that can supply I/O power.
Use the I/O power supply current for the CPU Rack of NX1P2 CPU Unit at 4 A or less. Using the currents that are outside of the specifications may cause failure or damage.
Selecting Protective Devices
Refer to the hardware user’s manual for the connected CPU Unit or the user's manual for the con­nected Communications Coupler Unit for selecting the protective devices.
Refer to Required Power Supply Capacity on page 4-28 for information on the inrush current that occurs when external devices connected to an Additional I/O Power Supply Unit are turned ON or OFF, which is one of the items to consider when you select protective devices.
NX-series System Units User’s Manual (W523)
4 - 31
4 Installation and Wiring
Installation Locations for Protective Devices
Refer to the hardware user’s manual for the connected CPU Unit or the user's manual for the con­nected Communications Coupler Unit for installation locations for protective devices.
4 - 32
NX-series System Units User’s Manual (W523)
4 Installation and Wiring
I/O Power Supply
Connection Unit
NX-PC0030
(8 each of IOV/IOG
terminals)
IOV
IOV
IOG
IOG
IOV
IOV
IOG
IOG
IOV
IOV
IOG
IOG
IOV
IOV
IOG
IOG
Two-wire sensor (e.g. limit switch)
0
8
2
10
4
12
6
14
Digital Input Unit
(NPN type) NX-ID5342
1
9
3
11
5
13
7
15
Three-wire sensor with NPN output (photoelectric sensor or proximity sensor)
Brown (White) Blue (Black)
Black (White) Brown (Red) Blue (Black)
A1
A8
B1
B8
A1
A8
B1
B8
4-6 Wiring the I/O Power Supply Connec-
tion Unit
The I/O Power Supply Connection Unit is used as additional I/O power supply terminals when there are not enough I/O power supply terminals in which it is connected to the connected external devices.
This section describes how to wire the I/O Power Supply Connection Unit.
Wiring Terminals
IOV or IOG terminal
Wiring Examples

4-6 Wiring the I/O Power Supply Connection Unit

A wiring example is shown below.
I/O power supply terminals can be used for power supply for connected external devices.
It is not possible to supply I/O power from the external power supply to this Unit.
Wiring Example 1
When the I/O Power Supply Connection Unit (NX-PC0030) is connected to a Digital Input Unit (16 inputs)
NPN type (NX-ID5342)
4
NX-series System Units User’s Manual (W523)
4 - 33
4 Installation and Wiring
Additional Information
IOV
IOV
IOG
IOG
IOV
IOV
IOG
IOG
IOV
IOV
IOG
IOG
IOV
IOV
IOG
IOG
Two-wire sensor (e.g. limit switch)
0
8
2
10
4
12
6
14
Digital Input Unit
(PNP type)
NX-ID5442
1
9
3
11
5
13
7
15
Three-wire sensor with PNP output (photoelectric sensor or proximity sensor)
Brown (White) Blue (Black)
Black (White) Brown (Red) Blue (Black)
A1
A8
B1
B8
A1
A8
B1
B8
I/O Power Supply
Connection Unit
NX-PC0030
(8 each of IOV/IOG
terminals)
PNP type (NX-ID5442)
Note Connecting three-wire sensors to all 16 inputs requires two NX-PC0030 Units.
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.
4 - 34
NX-series System Units User’s Manual (W523)
Wiring Example 2
Solenoid, valve, etc.
0
8
2
10
4
12
6
14
I/O Power Supply
Connection Unit
NX-PC0020
(16 IOV terminals)
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
1
9
3
11
5
13
7
15
Solenoid, valve, etc.
A1
A8
B1
B8
A1
A8
B1
B8
Digital Output Unit
(NPN type)
NX-OD5121
Solenoid, valve, etc.
0
8
2
10
4
12
6
14
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
1
9
3
11
5
13
7
15
Solenoid, valve, etc.
A1
A8
B1
B8
A1
A8
B1
B8
Digital Output Unit
(PNP type)
NX-OD5256
I/O Power Supply
Connection Unit
NX-PC0010
(16 IOG terminals)
4 Installation and Wiring
When the I/O Power Supply Connection Unit (NX-PC0020 or NX-PC0010) is connected to a Digital Output Unit (16 outputs)
NPN type (NX-OD5121)
4-6 Wiring the I/O Power Supply Connection Unit
4
NX-series System Units User’s Manual (W523)
PNP type (NX-OD5256)
4 - 35
4 Installation and Wiring
A1
A8
B1
B8
A1
A8
B1
B8
V1+
V5+
IOG
IOG
V3+
V7+
IOG
IOG
Analog Input Unit
(Single-ended)
NX-AD4603
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
V2+
V6+
IOG
IOG
V4+
IOG
IOG
Voltage input +
24 VDC (sensor power supply +)
0 V (sensor power supply –)
Three-wire sensor
V8+
I/O Power Supply
Connection Unit
NX-PC0020
(16 IOV terminals)
A1
A8
B1
B8
A1
A8
B1
B8
I1+
I5+
IOV
IOV
I3+
I7+
IOV
IOV
Analog Input Unit
(Single-ended)
NX-AD4203
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
I2+
I6+
IOV
IOV
I4+
IOV
IOV
Current input +
Current input +
24 VDC (sensor power supply +)
0 V (sensor power supply –)
Three-wire sensor
I8+
24 VDC (sensor power supply +)
Two-wire sensor
I/O Power Supply
Connection Unit
NX-PC0010
(16 IOG terminals)
Wiring Example 3
When the I/O Power Supply Connection Unit (NX-PC0020 or NX-PC0010) is connected to an Ana­log Input Unit (8 inputs, single-ended inputs)
For voltage 8 inputs (NX-AD4603)
4 - 36
For current 8 inputs (NX-AD4203)
NX-series System Units User’s Manual (W523)
4 Installation and Wiring
4-7 Wiring the Shield Connection Unit
The Shield Connection Unit is used when there are not enough terminals to connect the shield for the connection of external devices.
This section describes how to wire the Shield Connection Unit.
Wiring Terminals
• SHLD terminal
• Functional ground terminals
Wiring Examples
The following shows a wiring example in which the shield wire is used to connect an Incremental Encoder Input Unit (NX-EC0122) and a rotary encoder to the Shield Connection Unit.

4-7 Wiring the Shield Connection Unit

4
DIN Track
Additional NX Unit
Power Supply Unit
NX-PD1000
A1
UV
UV
UG
UG
NC
NC
A8 B8
Ground of 100 Ω or less
B1 A1
Shield
Connection Unit
NX-TBX01
SHLD
SHLD
SHLD
SHLD
SHLD
SHLD
SHLD
SHLD
SHLD
SHLD
SHLD
SHLD
SHLD
SHLD
A8
B1
B8
Incremental Encoder
Input Unit
(Open collector input)
NX-EC0122
A1
A
ZBNC
IOV
IOG
I0
I2
IOV
IOG
A8
Connect the shield of cable to the SHLD terminal.
And ground the functional ground terminal to 100 Ω or less.
IOV
IOG
I1
NC
IOV
IOG
Shield
B1
B8
Rotary Encoder
Shield
Sensor
Shield
Sensor
Shield
Sensor
Refer to the hardware user’s manual for the connected CPU Unit for details on grounding the CPU Rack.
Refer to the user's manual for the connected Communications Coupler Unit for details on grounding the Slave Terminal.
NX-series System Units User’s Manual (W523)
4 - 37
4 Installation and Wiring
WARNING

4-8 Wiring the Terminals

This section describes how to wire the terminals on the System 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.

4-8-1 Wiring to the Screwless Clamping Terminal Block

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.
• Unit power supply terminals
• I/O power supply terminals
• SHLD terminal
• Functional ground terminals
4 - 38
NX-series System Units User’s Manual (W523)
4 Installation and Wiring
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)
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.
4-8 Wiring the Terminals
4
4-8-1 Wiring to the Screwless Clamping Terminal Block
NX-series System Units User’s Manual (W523)
4 - 39
4 Installation and Wiring
8 to 10mm
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 plated one-pin ferrules. Do not use unplated ferrules or two-pin ferrules.
The applicable ferrules, wires, and crimping tools are listed in the following table.
Ter min al
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-
Phoenix Contact
Weidmuller H0.14/12 0.14 (#26) Weidmuller (The figure in parentheses is the appli-
turer
Applica-
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 2.0
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
2
(mm
(AWG))
*1
applicable wire size.)
CRIMPFOX 6 (0.25 to 6 mm
cable wire size.)
PZ6 Roto (0.14 to 6 mm
Crimping tool
2
, AWG24 to 10)
2
, AWG26 to 10)
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.
4 - 40
NX-series System Units User’s Manual (W523)
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