Omron DeviceNet Safety NE0A Series User manual

Safety Network Controller
Cat. No. Z916-E1-01
DeviceNet Safety
NE0A Series
OPERATION MANUAL

DeviceNet Safety
NE0A Series
Safety Network Controller
Operation Manual
Produced March 2008

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Notice:
OMRON products are manufactured for use according to proper procedures by a qualified operator
and only for the purposes described in this manual.
The following conventions are used to indicate and classify precautions in this manual. Always heed
the information provided with them. Failure to heed precautions can
result in injury to people or damage to property.
!WARNING Indicates a potentially hazardous situation which, if not avoided, will result in minor or
moderate injury, or may result in serious injury or death. Additionally, there may be signifi-
cant property damage.
OMRON Product References
All OMRON products are capitalized in this manual. The word “Unit” is also capitalized when it refers to
an OMRON product, regardless of whether or not it appears in the proper name of the product.
The abbreviation “PLC” means Programmable Controller. “PC” is used, however, in some Program-
ming Device displays to mean Programmable Controller.
Visual Aids
The following headings appear in the left column of the manual to help you locate different types of
information.
IMPORTANT Indicates important information on what to do or not to do to prevent failure to
operation, malfunction, or undesirable effects on product performance.
Note Indicates information of particular interest for efficient and convenient opera-
tion of the product.
1,2,3... 1. Indicates lists of one sort or another, such as procedures, checklists, etc.
Indicates general prohibitions for which there is no specific symbol.
Indicates general mandatory actions for which there is no specific symbol.

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Trademarks and Copyrights
DeviceNet and DeviceNet Safety are registered trademarks of the Open DeviceNet Vendors Associa-
tion.
Other product names and company names in this manual are trademarks or registered trademarks of
their respective companies.
OMRON, 2008
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form, o
r
by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission o
f
OMRON.
No patent liability is assumed with respect to the use of the information contained herein. Moreover, because OMRON is con-
stantly 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.

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TABLE OF CONTENTS
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
2 General Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx
4 Precautions for Safe Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi
5 Additional Precautions According to UL 1604 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii
6 Regulations and Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii
7 Unit Versions of NE0A-series Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv
SECTION 1
Overview of the NE0A-series Safety Network Controllers . 1
1-1 About NE0A-series Safety Network Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1-2 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SECTION 2
Nomenclature and Specifications . . . . . . . . . . . . . . . . . . . . . 9
2-1 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2-2 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2-3 Local Safety I/O Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
SECTION 3
Response Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3-1 Start Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3-2 Reaction Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
SECTION 4
General Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4-1 Overview of Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
SECTION 5
Installation and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5-1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5-2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
SECTION 6
Creating Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6-2 Creating a Virtual Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
6-3 Configuring NE0A-series Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
6-4 Descriptions of Logic Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
6-5 Remote I/O Allocations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
6-6 Saving Project Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

viii
TABLE OF CONTENTS
SECTION 7
Connecting Online and Downloading . . . . . . . . . . . . . . . . . . 91
7-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
7-2 Connecting Online . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
7-3 Downloading to Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
7-4 Verifying the Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
7-5 Uploading from Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
7-6 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
7-7 Access Control with Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
SECTION 8
Operation and Operating Modes. . . . . . . . . . . . . . . . . . . . . . 101
8-1 NE0A-series Controller Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
8-2 Changing the Operating Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
8-3 Configuration Lock and Automatic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
8-4 Changing the Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
8-5 Behavior for Power Supply Interruptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
SECTION 9
Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
9-1 Monitoring Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
9-2 Monitoring Safety Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
9-3 Force-setting and Force-resetting Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
9-4 Maintenance Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
SECTION 10
Safety Distributed Control Systems . . . . . . . . . . . . . . . . . . . 125
10-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
10-2 Determining the System Configuration and Defining the System Parameters . . . . . . . . . . . 127
10-3 Starting an NE0A-series Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
10-4 Building the System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
SECTION 11
Maintenance and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 133
11-1 Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
11-2 NE0A-series Controller Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

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TABLE OF CONTENTS
SECTION 12
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
12-1 Indicators and Error Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138
12-2 Troubleshooting with Error History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
12-3 Troubleshooting by Monitoring Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
12-4 Online Operation Errors with USB Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
12-5 Errors When Downloading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
12-6 Errors When Resetting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
12-7 Errors When Changing Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Appendices
A Application Templates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151
B DeviceNet Explicit Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
C Installing the NE0A USB Port Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
D Using the Password Recovery Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
E Calculated Values of PFD and PFH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

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About this Manual:
This manual describes the installation and operation of the NE0A-series Safety Network Controller.
Please read this manual carefully and be sure you understand the information provided before
attempting to install or operate an NE0A-series Controller. Be sure to read the precautions provided in
the following section.
The following manuals provide information on the DeviceNet and DeviceNet Safety.
DeviceNet Safety NE0A Series Safety Network Controller Operation Manual (this manual) (Z916)
This manual describes the specifications, functions, and usage of the NE0A-series Safety Network
Controllers.
DeviceNet Safety System Configuration Manual (Z905)
This manual explains how to configure the DeviceNet Safety system using the Network Configurator.
DeviceNet Safety NE1A Series Safety Network Controller Operation Manual (Z906)
This manual describes the specifications, functions, and usage of the NE1A-series Safety Network
Controllers.
DeviceNet Safety DST1 Series Safety I/O Terminal Operation Manual (Z904)
This manual describes the DST1-series Slave models, specifications, functions, and application meth-
ods in detail.
DeviceNet Operation Manual (W267)
This manual describes the construction and connection of a DeviceNet network. It provides detailed
information on the installation and specifications of cables, connectors, and other peripheral equip-
ment used in the network, and on the supply of communications power. Obtain this manual and gain a
firm understanding of its contents before using a DeviceNet system.
!WARNING Failure to read and understand the information provided in this manual may result in per-
sonal injury or death, damage to the product, or product failure. Please read each section
in its entirety and be sure you understand the information provided in the section and
related sections before attempting any of the procedures or operations given.

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Read and Understand this Manual
Please read and understand this manual before using the product. Please consult your OMRON
representative if you have any questions or comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a
period of one year (or other period if specified) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-
INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE
PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS
DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR
INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT
LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which
liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS
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 OR REPAIR.

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Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the
combination of products in the customer's application or use of the products.
At the customer's request, OMRON will provide applicable third party certification documents identifying
ratings and limitations of use that apply to the products. This information by itself is not sufficient for a
complete determination of the suitability of the products in combination with the end product, machine,
system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not
intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses
listed may be suitable for the products:
• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or
uses not described in this manual.
• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical
equipment, amusement machines, vehicles, safety equipment, and installations subject to separate
industry or government regulations.
• Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS 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 PRODUCTS ARE PROPERLY RATED AND INSTALLED
FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any
consequence thereof.

xv
Disclaimers
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 model numbers when published ratings or features are changed, or when
significant construction changes are made. However, some specifications of the products may be changed
without any notice. When in doubt, special model numbers may be assigned to fix or establish key
specifications for your application on your request. Please consult with your OMRON representative at any
time to confirm actual specifications of purchased products.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when
tolerances are shown.
PERFORMANCE DATA
Performance data given in this manual 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 users must
correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and
Limitations of Liability.
ERRORS AND OMISSIONS
The information in this manual has been carefully checked and is believed to be accurate; however, no
responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.

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xvii
PRECAUTIONS
1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx
4 Precautions for Safe Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi
5 Additional Precautions According to UL 1604. . . . . . . . . . . . . . . . . . . . . . . . xxiii
6 Regulations and Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii
7 Unit Versions of NE0A-series Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv

xviii
Intended Audience 1
1 Intended Audience
This manual is intended for the following personnel, who must have knowl-
edge of electrical systems (an electrical engineer or the equivalent).
• Personnel in charge of introducing FA and safety systems into production
facilities
• Personnel in charge of designing FA and safety systems
• Personnel in charge of managing FA facilities
• Personnel who have the qualifications, authority, and obligation to provide
safety during each of the following product phases: mechanical design,
installation, operation, maintenance, and disposal
2 General Precautions
The user must operate the product according to the performance specifica-
tions described in the operation manuals.
Before using the product under conditions which are not described in the
manual or applying the product to nuclear control systems, railroad systems,
aviation systems, vehicles, combustion systems, medical equipment, amuse-
ment machines, safety equipment, and other systems, machines, and equip-
ment that may have a serious influence on lives and property if used
improperly, consult your OMRON representative.
Make sure that the ratings and performance characteristics of the product are
sufficient for the systems, machines, and equipment, and be sure to provide
the systems, machines, and equipment with double safety mechanisms.
This manual provides information for programming and operating the Unit. Be
sure to read this manual before attempting to use the Unit and keep this man-
ual close at hand for reference during operation.
!WARNING It is extremely important that a PLC and all PLC Units be used for the speci-
fied purpose and under the specified conditions, especially in applications that
can directly or indirectly affect human life. You must consult with your OMRON
representative before applying a PLC System to the above-mentioned appli-
cations
!WARNING This is the Operation Manual for the NE0A-series Safety Network Controllers.
Heed the following items during system construction to ensure that safety-
related components are configured in a manner that allows the system func-
tions to sufficiently operate.
• Risk Assessment
The proper use of the safety device described in this Operation Manual as
it relates to installation conditions and mechanical performance and func-
tions is a prerequisite for its use. When selecting or using this safety de-
vice, risk assessment must be conducted with the aim of identifying
potential danger factors in equipment or facilities in which the safety device
is to be applied, during the development stage of the equipment or facili-
ties. Suitable safety devices must be selected under the guidance of a suf-
ficient risk assessment system. An insufficient risk assessment system
may lead to the selection of unsuitable safety devices.
• Typical related international standards: ISO 14121, Safety of Machin-
ery -- Principles of Risk Assessment

xix
General Precautions 2
• Safety Measures
When using this safety device to build systems containing safety-related
components for equipment or facilities, the system must be designed with
the full understanding of and conformance to international standards, such
as those listed below, and/or standards in related industries.
• Typical related international standards: ISO/DIS 12100, Safety of Ma-
chinery -- Basic Concepts and General Principles for Design IEC
61508, Safety Standard for Safety Instrumented Systems (Functional
Safety of Electrical/Electronic/Programmable Electronic Safety-related
Systems)
• Role of Safety Device
This safety device is provided with safety functions and mechanisms as
stipulated in relevant standards, but suitable designs must be used to allow
these functions and mechanisms to operate properly inside system con-
structions containing safety-related components. Build systems that en-
able these functions and mechanisms to perform properly, based on a full
understanding of their operation.
• Typical related international standards: ISO 14119, Safety of Machin-
ery -- Interlocking Devices Associated with Guards -- Principles of De-
sign and Selection
• Installation of Safety Device
The construction and installation of systems with safety-related compo-
nents for equipment or facilities must be performed by technicians who
have received suitable training.
• Typical related international standards: ISO/DIS 12100, Safety of Ma-
chinery -- Basic Concepts and General Principles for Design IEC
61508, Safety Standard for Safety Instrumented Systems (Functional
Safety of Electrical/Electronic/Programmable Electronic Safety-related
Systems)
• Complying with Laws and Regulations
This safety device conforms to the relevant regulations and standards, but
make sure that it is used in compliance with local regulations and stan-
dards for the equipment or facilities in which it is applied.
• Typical related international standards: IEC 60204, Safety of Machin-
ery -- Electrical Equipment of Machines
• Observing Precautions for Use
When putting the selected safety device to actual use, heed the specifica-
tions and precautions in this Operation Manual and those in the Instruction
Manual that comes with the product. Using the product in a manner that
deviates from these specifications and precautions will lead to unexpected
failures in equipment or devices, and to damages that result from such fail-
ures, due to insufficient operating functions in safety-related components.
• Moving or Transferring Devices or Equipment
When moving or transferring devices or equipment, be sure to include this
Operation Manual to ensure that the person to whom the device or equip-
ment is being moved or transferred will be able to operate it properly.
• Typical related international standards: ISO/DIS 12100 ISO, Safety of
Machinery -- Basic Concepts and General Principles for Design IEC
61508, Safety Standard for Safety Instrumented Systems (Functional
Safety of Electrical/ Electronic/ Programmable Electronic Safety-relat-
ed Systems)

xx
Safety Precautions 3
3 Safety Precautions
!WARNING
Serious injury may possibly occur due to loss of required safety functions. Do
not use the NE0A-series Controller's test outputs as safety outputs.
Serious injury may possibly occur due to loss of required safety functions. Do
not use DeviceNet standard I/O data or explicit message data as safety data.
Serious injury may possibly occur due to loss of required safety functions. Do
not use indicators or 7-segment display on the NE0A-series Controller for safety
operations.
Serious injury may possibly occur due to breakdown of safety outputs or test
outputs. Do not connect loads beyond the rated value to the safety outputs and
test outputs.
Serious injury may possibly occur due to loss of required safety functions. Wire
the NE0A-series Controller properly so that the 24-VDC line does NOT touch the
outputs accidentally or unintentionally.
Serious injury may possibly occur due to loss of required safety functions.
Ground the 0-V line of the power supply for external output devices so that the
devices do NOT turn ON when the safety output line or the test output line is
grounded.
Serious injury may possibly occur due to loss of required safety functions.
Clear previous configuration data before connecting the devices to the network.
Serious injury may possibly occur due to loss of required safety functions. Set
suitable node addresses and a suitable baud rate before connecting the devices
to the network.
Serious injury may possibly occur due to loss of required safety functions. Per-
form user testing and confirm that all of the device configuration data and oper-
ation is correct before starting system operation.
Serious injury may possibly occur due to loss of required safety functions.
When replacing a device, configure the replacement device suitably and confirm
that it operate correctly.
Outputs may operation, possibly causing serious injury. Take sufficient safety
measures before force-setting or force-resetting any bits in memory.
Serious injury may possibly occur due to loss of required safety functions. Use
appropriate components or devices according to the requirements given in the
following table.
Control device Requirements
Emergency stop switch Use approved devices with a direct opening mechanism compliant with IEC/
EN 60947-5-1.
Door interlocking switch or
limit switch Use approved devices with a direct opening mechanism compliant with IEC/ EN 60947-5-1 and capable of switching micro-loads of 4 mA at 24 VDC.
Safety sensor Use approved devices compliant with the relevant product standards, regula-
tions, and rules in the country where they are used.
Relay with forcibly guided
contacts Use approved devices with forcibly guided contacts compliant with EN 50205. For feedback signals, use devices with contacts capable of switching
micro-loads of 4 mA at 24 VDC.

xxi
Precautions for Safe Use 4
4 Precautions for Safe Use
■Handling with Care
Do not drop the NE0A-series Controller or subject it to excessive vibration or
mechanical shock. The NE0A-series Controller may be damaged and may not
function properly.
■Installation and Storage Environment
Do not use or store the NE0A-series Controller in any of the following loca-
tions:
• 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 tem-
perature
• Locations subject to corrosive or flammable gases
• Locations subject to dust (especially iron dust) or salts
• Locations subject to water, oil, or chemicals
• Locations subject to shock or vibration
Take appropriate and sufficient measures when installing systems in the fol-
lowing locations. Inappropriate and insufficient measures may result in mal-
function.
• 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 supplies
The NE0A-series Controller is a class A product designed for industrial envi-
ronments. Use in residential area may cause radio interference, in which case
the user may be required to take adequate measures to reduce interference.
■Installation and Mounting
• Use the NE0A-series Controller within an enclosure with IP54 protection
or higher according to IEC/EN 60529.
• Use DIN Track (TH35-7.5 according to IEC 60715) to install the NE0A-
series Controller into the control panel. Mount the NE0A-series Controller
to the DIN Track using PFP-M End Plates (not included with the NE0A-
series Controller) to prevent it falling off the DIN Track because of vibra-
tion.
• Space must be provided around the NE0A-series Controller, at least 5
mm from its side and at least 50 mm from its top and bottom surfaces, for
ventilation and wiring.
Contactor Use contactors with a forcibly guided mechanism and monitor the auxiliary
NC contact to detect contactor failures. For feedback signals, use devices
with contacts capable of switching micro-loads of 4 mA at 24 VDC.
Other devices Evaluate whether devices used are appropriate to satisfy the requirements of
the safety category level.
Control device Requirements