Omron NX Series User manual

User’s Manual W523-E1-03
Machine Automation Controller NX-series System Units
Machine Automation Controller
NX-series
System Units
Additional NX Unit Power Supply Units
Additional I/O Power Supply Units
I/O Power Supply Connection Units
Shield Connection Units
User’s Manual
W523-E1-03
NX-PD1
NX-PF0
NX-PC0
NX-TBX01
Authorized Distributor:
In the interest of product improvement,
specifications are subject to change without notice.
Cat. No.W523-E1-03 0913
© OMRON Corporation 2013 All Rights Reserved.
OMRON Corporation Industrial Automation Company
OMRON ELECTRONICS LLC
One Commerce Drive Schaumburg,
IL 60173-5302 U.S.A.
Tel:[phone]/Fax: [phone]
Regional Headquarters
OMRON EUROPE B.V.
Wegalaan 67-69-2132 JD Hoofddorp
The Netherlands
Tel: [phone]/Fax: [phone]
Contact: www.ia.omron.com
Tokyo, JAPAN
OMRON ASIA PACIFIC PTE. LTD.
No. 438A Alexandra Road # 05-05/08 (Lobby 2),
Alexandra Technopark,
Singapore 119967
Tel:[phone]/Fax: [phone]
OMRON (CHINA) CO., LTD.
Room 2211, Bank of China Tower,
200Yin Cheng Zhong Road,
PuDong New Area, Shanghai, 200120, China
Tel:[phone]/Fax: [phone]
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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. Neverthe-
less, 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.
©OMRON, 2013
• Sysmac and SYSMAC are trademarks or registered trademarks of OMRON Corporation in Japan and other
countries for OMRON factory automation products.
• Windows, Windows 98, Windows XP, Windows Vista, and Windows 7 are registered trademarks of Microsoft
Corporation in the USA and other countries.
• EtherCAT®is registered trademark and patented technology, licensed by Beckhoff Automation GmbH, Germany.
• Safety over EtherCAT®is registered trademark and patented technology, licensed by Beckhoff Automation
GmbH, Germany.
• ODVA, CIP, CompoNet, DeviceNet, and EtherNet/IP are trademarks of ODVA.
• The SD and SDHC logos are trademarks of SD-3C, LLC.
Other company names and product names in this document are the trademarks or registered trademarks of their
respective companies.
Trademarks
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1
Introduction
NX-series System Unit User’s Manual (W523)
Introduction
Thank you for purchasing a 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.
This manual is intended for the following personnel, who must also have knowledge of electrical sys-
tems (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 B3503.
This manual covers the following product.
• NX-series System Unit
NX-PD /PF /PC
NX-TBX
Intended Audience
Applicable Products
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CONTENTS
2NX-series System Unit User’s Manual (W523)
CONTENTS
Introduction ..............................................................................................................1
Intended Audience.......................................................................................................................................1
Applicable Products.....................................................................................................................................1
Relevant Manuals.....................................................................................................6
Manual Structure......................................................................................................8
Page Structure and Icons ............................................................................................................................8
Special Information......................................................................................................................................9
Precaution on Terminology..........................................................................................................................9
Terms and Conditions Agreement........................................................................10
Read and understand this Manual.............................................................................................................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..................................................................................20
Regulations and Standards...................................................................................21
Conformance to EC Directives ..................................................................................................................21
Conformance to UL and CSA Standards...................................................................................................22
Conformance to Shipbuilding Standards ...................................................................................................22
Conformance to KC Standards..................................................................................................................22
Software Licenses and Copyrights............................................................................................................22
Unit Versions ..........................................................................................................23
Unit Versions..............................................................................................................................................23
Unit Versions and Sysmac Studio Versions...............................................................................................25
Unit Version Notation.................................................................................................................................25
Related Manuals.....................................................................................................26
Terminology............................................................................................................29
Revision History.....................................................................................................31
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......................................................................................................................1-2
1-2 System Configuration of Slave Terminals........................................................................... 1-3
1-2-1 Overview.....................................................................................................................................1-3
1-2-2 System Configuration..................................................................................................................1-3
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3
CONTENTS
NX-series System Unit User’s Manual (W523)
1-3 Model List............................................................................................................................... 1-5
1-3-1 Model Notation............................................................................................................................ 1-5
1-3-2 Additional NX Unit Power Supply Unit........................................................................................ 1-6
1-3-3 Additional I/O Power Supply Unit................................................................................................ 1-6
1-3-4 I/O Power Supply Connection Unit............................................................................................. 1-7
1-3-5 Shield Connection Unit............................................................................................................... 1-7
1-4 Support Software................................................................................................................... 1-8
1-4-1 Applicable Support Software ...................................................................................................... 1-8
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
Section 4 Installation and Wiring
4-1 Installing NX Units.................................................................................................................4-2
4-1-1 Installing NX Units ...................................................................................................................... 4-2
4-1-2 Attaching Markers....................................................................................................................... 4-4
4-1-3 Removing NX Units .................................................................................................................... 4-5
4-1-4 Installation Orientation................................................................................................................ 4-7
4-2 Wiring the Power Supply to the Slave Terminal ................................................................. 4-8
4-2-1 Power Supply Types................................................................................................................... 4-8
4-2-2 Supplying Each Power Supply and Wiring ................................................................................. 4-9
4-2-3 Power Supply-related Units and Wiring Methods......................................................................4-11
4-3 Grounding the Slave Terminal............................................................................................ 4-14
4-4 Wiring the Additional Power Supply Units....................................................................... 4-15
4-4-1 Wiring the Additional NX Unit Power Supply Unit..................................................................... 4-16
4-4-2 Wiring the Additional I/O Power Supply Unit ............................................................................ 4-19
4-4-3 Protective Devices.................................................................................................................... 4-22
4-5 Wiring the I/O Power Supply Connection Unit.................................................................. 4-27
4-6 Wiring the Shield Connection Unit .................................................................................... 4-31
4-7 Wiring the Terminals ........................................................................................................... 4-32
4-7-1 Wiring to the Screwless Clamping Terminal Block.................................................................... 4-32
Section 5 Troubleshooting
5-1 How to Check for Errors ....................................................................................................... 5-2
5-2 Checking for Errors with the Indicators.............................................................................. 5-3
5-3 Checking for Errors and Troubleshooting on the Sysmac Studio.................................... 5-5
5-3-1 Checking for Errors from the Sysmac Studio.............................................................................. 5-5
5-3-2 Event Codes and Corrections for Errors.....................................................................................5-8
5-3-3 Meaning of Error......................................................................................................................... 5-9
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CONTENTS
4NX-series System Unit User’s Manual (W523)
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
6-2-1 Backing Up Data.........................................................................................................................6-5
6-2-2 Replacement Procedure for NX Units.........................................................................................6-6
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-9
A-1-5 Shield Connection Unit..............................................................................................................A-13
A-2 Dimensions ..........................................................................................................................A-15
A-2-1 Additional NX Unit Power Supply Unit, Additional I/O Power Supply Unit, I/O Power Supply Con-
nection Unit, and Shield Connection Unit..................................................................................A-15
A-3 List of NX Objects................................................................................................................A-17
A-3-1 Format of Object Descriptions...................................................................................................A-17
A-3-2 System Units.............................................................................................................................A-18
A-4 List of Terminal Block Models............................................................................................A-19
A-4-1 Model Notation..........................................................................................................................A-19
A-4-2 List of Terminal Block Models....................................................................................................A-19
A-5 Version Information.............................................................................................................A-20
A-5-1 Relationship between the Unit Versions of Each Unit and the EtherCAT Coupler Units, CPU Units,
and Sysmac Studio Versions ....................................................................................................A-20
Index
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5
CONTENTS
NX-series System Unit User’s Manual (W523)
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Relevant Manuals
6NX-series System Unit User’s Manual (W523)
Relevant Manuals
To use the System Unit, you must refer to the manuals for all related products.
Read all of the manuals that are relevant to your system configuration and application before you use
the NX-series System Unit.
Most operations are performed from the Sysmac Studio Automation Software. Refer to the Sysmac Stu-
dio Version 1 Operation Manual (Cat. No. W504) for information on the Sysmac Studio.
NJ Series
NX Series
Commu-
nications
Coupler
Unit
NX Units All
Units
NJ-series CPU Unit Hardware User's Manual NJ-series CPU Unit Software User's Manual NJ-series CPU Unit Motion Control User's Manual NJ-series CPU Unit Built-in EtherCAT Port User's Manual NJ-series Troubleshooting Manual NX-series EtherCAT Coupler Unit User's Manual NX-series Digital I/O Units User's Manual NX-series Analog I/O Units User's Manual NX-series System Units User's Manual NX-series Position Interface Units User's Manual NX-series Safety Control Unit User's Manual NX-series Data Reference Manual
Learning about the
NX-series Units
Specifications z zzzzz
Functionality z zzzzz
Application proce-
dures z zzzzz
Learning about Slave Ter-
minals z
Slave Terminal speci-
fications z
System configuration z
Rules on building
systems z
Slave Terminal appli-
cation procedures z
Slave Terminal instal-
lation procedures z
Support Software
connection proce-
dures
z
Procedure to esti-
mate Slave Terminal
performance
z
Procedures for using
safety control sys-
tems with Slave Ter-
minals
z
Procedures for esti-
mating performance
of safety control sys-
tems with Slave Ter-
minals
z
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7
Relevant Manuals
NX-series System Unit User’s Manual (W523)
Using NX-series Units with
NJ-series Controllers
Using a Slave Termi-
nal connected to the
built-in EtherCAT port
on an NJ-series CPU
Unit
zz z z
Procedures for per-
forming motion con-
trol with Position
Interface Units
zz
Troubleshooting
Managing errors for
the overall NJ-series
Controller
z
Troubleshooting
Slave Terminals and
Communications
Coupler Units
z
Troubleshooting NX
Units zzzzz
Performing Unit mainte-
nance z zzzzz
Referencing data lists for
NX Unit power consump-
tions, weights, etc.
z
NJ Series
NX Series
Commu-
nications
Coupler
Unit
NX Units All
Units
NJ-series CPU Unit Hardware User's Manual NJ-series CPU Unit Software User's Manual NJ-series CPU Unit Motion Control User's Manual NJ-series CPU Unit Built-in EtherCAT Port User's Manual NJ-series Troubleshooting Manual NX-series EtherCAT Coupler Unit User's Manual NX-series Digital I/O Units User's Manual NX-series Analog I/O Units User's Manual NX-series System Units User's Manual NX-series Position Interface Units User's Manual NX-series Safety Control Unit User's Manual NX-series Data Reference Manual
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Manual Structure
8NX-series System Unit User’s Manual (W523)
Manual Structure
The following page structure and icons are used in this manual.
Note This illustration is provided only as a sample. It may not literally appear in this manual.
Page Structure and Icons
4-9
4 Installation and Wiring
NJ-series CPU Unit Hardware User’s Manual (W500)
stinUgnitnuoM3-4
4
stnenopmoCrellortnoCgnitcennoC1-3-4
4-3 Mounting Units
The Units that make up an NJ-series Controller can be connected simply by pressing the Units together
and locking the sliders by moving them toward the back of the Units. The End Cover is connectedin the
same way to the Unit on the far right side of the Controller.
1Join the Units so that the connectors fit exactly.
2The 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.
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9
Manual Structure
NX-series System Unit User’s Manual (W523)
Special information in this manual is classified as follows:
Precautions for Safe Use
Precautions on what to do and what not to do to ensure safe usage of the product.
Precautions for Correct Use
Precautions on what to do and what not to do to ensure proper operation and performance.
Additional Information
Additional information to read as required.
This information is provided to increase understanding or make operation easier.
Version Information
Information on differences in specifications and functionality for CPU Units and EtherCAT Cou-
pler Units with different unit versions and for different versions of the Sysmac Studio is given.
Note References are provided to more detailed or related information.
• In this manual, “download” refers to transferring data from the Sysmac Studio to the physical Control-
ler and “upload” refers to transferring data from the physical Controller to the Sysmac Studio.
For the Sysmac Studio, synchronization is used to both upload and download data. Here, “synchro-
nize” means to automatically compare the data for the Sysmac Studio on the computer with the data
in the physical Controller and transfer the data in the direction that is specified by the user.
• In this manual, the directions in relation to the Units are given in the following figure, which shows
upright installation.
Special Information
Precaution on Terminology
RightLeft
Up
Down
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Terms and Conditions Agreement
10 NX-series System Unit User’s Manual (W523)
Terms and Conditions Agreement
Please read and understand this catalog before purchasing the products. Please consult your OMRON
representative if you have any questions or comments.
zExclusive Warranty
Omron’s exclusive warranty is that the Products will be free from defects in materials and workman-
ship 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.
zLimitations
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.
zBuyer 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-com-
plying 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 combi-
nation with any electrical or electronic components, circuits, system assemblies or any other materi-
als 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.
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CON-
SEQUENTIAL 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.
Read and understand this Manual
Warranty, Limitations of Liability
Warranties
Limitation on Liability; Etc
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11
Terms and Conditions Agreement
NX-series System Unit User’s Manual (W523)
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 com-
plete determination of the suitability of the Product in combination with the end product, machine, sys-
tem, 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 applica-
tion 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.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or
any consequence thereof.
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 perfor-
mance is subject to the Omron’s Warranty and Limitations of Liability.
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.
Information presented by Omron Companies has been checked and is believed to be accurate; how-
ever, no responsibility is assumed for clerical, typographical or proofreading errors or omissions.
Application Considerations
Suitability of Use
Programmable Products
Disclaimers
Performance Data
Change in Specifications
Errors and Omissions
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Safety Precautions
12 NX-series System Unit User’s Manual (W523)
Safety Precautions
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.
Definition of Precautionary Information
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.
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.
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13
Safety Precautions
NX-series System Unit User’s Manual (W523)
Warnings
During Power Supply
Do not touch the terminal section while power is ON.
Electric shock may occur.
Do not attempt to take any Unit apart.
In particular, high-voltage parts are present in Units that supply power while power is sup-
plied or immediately after power is turned OFF. Touching any of these parts may result in
electric shock. There are sharp parts inside the Unit that may cause injury.
Fail-safe Measures
Provide safety measures in external circuits to ensure safety in the system if an abnormality
occurs due to malfunction of the CPU Unit, other Units, or slaves or due to other external
factors affecting operation.
Not doing so may result in serious accidents due to incorrect operation.
Emergency stop circuits, interlock circuits, limit circuits, and similar safety measures must
be provided in external control circuits.
The CPU Unit will turn OFF all outputs from Basic Output Units in the following cases. The
remote I/O slaves will operate according to the settings in the slaves.
• If a power supply error occurs.
• If the power supply connection becomes faulty.
• If a CPU watchdog timer error or CPU reset occurs.
• If a Controller error in the major fault level occurs.
• While the CPU Unit is on standby until RUN mode is entered after the power is turned ON
External safety measures must be provided to ensure safe operation of the system in such
cases.
The outputs may remain ON or OFF due to deposition or burning of the output relays or
destruction of the output transistors. As a countermeasure for such problems, external
safety measures must be provided to ensure safe operation of the system.
If external power supplies for slaves or other devices are overloaded or short-circuited, the
voltage will drop, outputs will turn OFF, and the system may be unable to read inputs. Pro-
vide 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.
WARNING
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Safety Precautions
14 NX-series System Unit User’s Manual (W523)
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 infor-
mation, 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.
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
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15
Safety Precautions
NX-series System Unit User’s Manual (W523)
Online Editing
Execute online editing only after confirming that no adverse effects will be caused by devia-
tions 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.
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Precautions for Safe Use
16 NX-series System Unit User’s Manual (W523)
Precautions for Safe Use
• 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.
• Mount terminal blocks and connectors only after checking the mounting location carefully.
• Be sure that the terminal blocks, expansion cables, and other items with locking devices are properly
locked into place.
• Do not apply labels or tape to the Unit. When the Unit is installed or removed, adhesive or scraps
may adhere to the pins in the NX bus connector, which may result in malfunctions.
• Do not write on the Communications Coupler Unit or an NX Unit with ink within the restricted region
that is shown in the following figure. Also do not get this area dirty. When the Unit is installed or
removed, ink or dirt may adhere to the pins in the NX bus connector, which may result in malfunctions
in the Slave Terminal.
• 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.
Transporting
Mounting
Installation
Restricted
region (shaded
portion)
Communications Coupler
Unit or NX Unit
NX Unit
Up
Down
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17
Precautions for Safe Use
NX-series System Unit User’s Manual (W523)
• 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 termi-
nal block. Doing so may damage the terminal block.
• 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.
• Use all Units within the I/O power supply ranges that are given in the specifications.
• Supply sufficient power according to the contents of this manual.
• Use the power supply voltage that is specified in this manual.
• Do not apply voltages that exceed the rated value to any Input Unit.
• Do not apply voltages or connect loads to the Output Units or slaves in excess of the maximum rat-
ings.
• 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.
• When you set the Operating Mode at Startup, confirm that no adverse effect will occur in the system.
• 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.
Wiring
Power Supply Design
Turning ON the Power Supply
Actual Operation
NG OK
NG NG
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Precautions for Safe Use
18 NX-series System Unit User’s Manual (W523)
• 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.
• Do not disconnect the cable or turn OFF the power supply to the Controller or a Slave Terminal when
downloading data or the user program from Sysmac Studio.
• Always turn OFF the external power supply to the Units before attempting any of the following.
Mounting or removing an NX Unit, Communications Coupler Unit, or CPU Unit
Assembling Units
Setting DIP switches or rotary switches
Connecting or wiring cables
Attaching or removing terminal blocks or connectors
Units that supply power continue to supply power to the Units for up to several seconds after the
power supply is turned OFF. The PWR indicator remains lit as long as power is supplied. Confirm that
the PWR indicator is not lit before you perform any of the above.
• Confirm that the controlled system will not be adversely affected before you perform any of the fol-
lowing operations.
Changing the operating mode of the CPU Unit (including changing the setting of the Operating
Mode at Startup)
Changing the user program or settings
Changing set values or present values
Forced refreshing
• Always sufficiently check the safety at the connected devices before you change the settings of an
EtherCAT slave or Special Unit.
• Do not exceed the ranges that are given in the specifications for the communications distance and
number of connected Units.
• Make sure that the communications distance, number of nodes connected, and method of connec-
tion for EtherCAT are within specifications.
Do not connect EtherCAT Coupler Units to EtherNet/IP, a standard in-house LAN, or other networks.
An overload may cause the network to fail or malfunction.
• Malfunctions or unexpected operation may occur for some combinations of EtherCAT revisions of the
master and slaves. If you disable the revision check in the network settings, check the slave revision
settings in the master and the actual slave revisions, and then make sure that functionality is compat-
ible in the manuals or other references. You can check the slave versions in the settings from the
Sysmac Studio and you can check the actual slave revisions from the Sysmac Studio or on slave
nameplates.
• After you transfer the user program, the CPU Unit is restarted and communications with the Ether-
CAT slaves are cut off. During that period, the slave outputs behave according to the slave settings.
Turning OFF the Power Supply
Operation
General Communications
EtherCAT Communications
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