Omron G9SR User manual

ZX-T Series
Cat. No. J12E-EN-03
G9SR
Safety Relays
OPERATION MANUAL
G9SR-BC@-@
G9SR-AD@-@
G9SR-EX@-@-@

Operation manual G9SR
II
ORIGINAL VERSION UPDATED May 19, 2014
REVISION 2 UPDATED October 07, 2014
OMRON, 2014
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.

Operation manual G9SR
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G9SR Safety Relays:
G9SR-BC-
G9SR-AD-
G9SR-EX-T90-
Operation Manual
Revised October 2014

Operation manual G9SR
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TABLE OF CONTENTS
Introduction
Manual Configuration……………………………………………….…..vii
Safety Precautions………………………………………………………. xi
Precautions for Safe Use……………………………………………....xviii
Regulations and Standards……………………………………………. xxii
Glossary, Definitions, Abbreviations………………….……………… xxv
1PRODUCT FAMILY – GENERAL INFORMATION ..................... 1
1.1 INTENDED USE.....................................................................................................1
1.2 FAMILY OVERVIEW .............................................................................................1
1.2.1 G9SR-BC ............................................................................................................. 1
1.2.2 G9SR-AD ............................................................................................................. 2
1.2.3 G9SR-EX.............................................................................................................. 2
1.3 MECHANICAL DIMENSIONS ...................................................................................3
2INSTALLATION AND CONFIGURATION ................................... 4
2.1 STEP 1: INSTALLATION ENVIRONMENT...................................................................4
2.2 STEP 2: MECHANICAL INSTALLATION ....................................................................4
2.3 STEP 3: ELECTRICAL INSTALLATION ......................................................................5
2.3.1 Install fuses for G9SR units ................................................................................. 5
2.3.2 Install fuses for output relays .............................................................................. 5
2.3.3 Install Power Supply ........................................................................................... 5
2.3.4 G9SR-BC□-□solid state output .......................................................................... 6
2.4 STEP 4: CONFIGURE THE G9SR UNITS ....................................................................6
2.5 STEP 5: TEST THE INSTALLATION...........................................................................6
3TEST ............................................................................................... 7
3.1 TEST THE OFF BEHAVIOUR .................................................................................8
3.2 TEST THE ON BEHAVIOUR ...................................................................................9
4TECHNICAL SPECIFICATIONS................................................. 10
4.1 GENERAL SPECIFICATIONS ..................................................................................10
4.2 DERATING CURVE OF RELAY CONTACT CURRENT ..................................................12
4.3 TEST PATTERN FOR OSSD TESTING .....................................................................13
4.4TEST PATTERN FOR DYNAMIC INPUT TESTING ......................................................13
5RESTART MODES ....................................................................... 14
5.1 MANUAL RESTART ............................................................................................14
5.2 WIRING EXAMPLES MANUAL RESTART................................................................15
5.2.1 Manual Restart with dynamic input testing ...................................................... 16
5.2.2 Manual Restart without dynamic input testing ................................................. 16
5.3 AUTOMATIC RESTART........................................................................................17
5.4 WIRING EXAMPLES AUTOMATIC RESTART ...........................................................17
5.4.1 Automatic Restart with dynamic input testing .................................................. 18
5.4.2 Automatic Restart without dynamic input testing ............................................. 18
6G9SR UNIT: G9SR-BC□-□............................................................ 19

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6.1 INTRODUCTION..................................................................................................19
6.2 INTERNAL CONNECTIONS OF G9SR-BC□-□..........................................................19
6.3 DIP SWITCHES AND FUNCTIONS OF G9SR-BC□-□..................................................20
6.4 LEDS OF THE G9SR-BC□-□...............................................................................21
6.4.1 POWER LED = POWER................................................................................... 21
6.4.2 IN2 LED = Input 2 ........................................................................................... 21
6.4.3 RESTART LED = Restart.................................................................................. 21
6.4.4 EDM LED = External Device Monitoring........................................................ 22
6.4.5 ON LED = Outputs........................................................................................... 22
6.4.6 OFF/ERR LED = OFF & Error ....................................................................... 22
6.5 LED EXAMPLES G9SR-BC□-□............................................................................23
6.5.1 Normal operation - LEDs G9SR-BC□-□........................................................... 23
6.5.2 Error situations - LEDs G9SR-BC□-□.............................................................. 24
6.6 TERMINAL AND SIGNAL NAMES G9SR-BC□-□......................................................25
7G9SR UNIT: G9SR-AD□-□............................................................ 26
7.1 INTRODUCTION..................................................................................................26
7.2 INTERNAL CONNECTIONS OF G9SR-AD□-□..........................................................26
7.3 DIP SWITCHES AND FUNCTIONS OF G9SR-AD□-□.................................................27
7.4 LEDS OF THE G9SR-AD□-□...............................................................................28
7.4.1 POWER LED = Power...................................................................................... 28
7.4.2 IN1 LED = Input 1 ........................................................................................... 28
7.4.3 IN2 LED = Input 2 ........................................................................................... 28
7.4.4 RESTART LED = Restart.................................................................................. 29
7.4.5 EDM LED = External Device Monitoring........................................................ 29
7.4.6 ON LED = Outputs........................................................................................... 29
7.4.7 OFF/ERR LED = Error ................................................................................... 29
7.5 LED EXAMPLES G9SR-AD□-□...........................................................................30
7.5.1 Normal operation - LEDs G9SR-AD□-□.......................................................... 30
7.5.2 Error situations - LEDs G9SR-AD□-□............................................................. 31
7.6 TERMINAL AND SIGNAL NAMES OF THE G9SR-AD□-□UNIT...................................32
8G9SR UNIT: G9SR-EX□-T90-□..................................................... 33
8.1 INTRODUCTION..................................................................................................33
8.2 INTERNAL CONNECTIONS OF G9SR-EX□-T90-□...................................................33
8.3 ROTARY SWITCH FUNCTIONS OF G9SR-EX□-T90-□..............................................34
8.3.1 ON-delay............................................................................................................ 34
8.3.2 OFF-delay ......................................................................................................... 34
8.4 LEDS OF THE G9SR-EX□-T90-□........................................................................35
8.4.1 POWER LED = Power...................................................................................... 35
8.4.2 COM LED = Input ........................................................................................... 35
8.4.3 EDM LED = External Device Monitoring........................................................ 35
8.4.4 ON LED = Outputs........................................................................................... 36
8.4.5 OFF/ERR LED = Error ................................................................................... 36
8.5 LED EXAMPLES G9SR-EX□-T90-□....................................................................37
8.5.1 Normal operation - LEDs G9SR-EX□-T90-□................................................... 37
8.5.2 Error situations - LEDs G9SR-EX□-T90-□...................................................... 37
8.6 TERMINAL AND SIGNAL NAMES OF THE G9SR-EX□-T90-□....................................38
9STAND-ALONE OPERATION OF A G9SR UNIT........................ 39
9.1 WIRING EXAMPLES STAND-ALONE G9SR-BC .......................................................40
9.1.1 G9SR-BC wiring with dynamic testing with EDM............................................ 40
9.1.2 G9SR-BC wiring without dynamic testing with EDM....................................... 41
9.1.3 G9SR-BC wring with dynamic testing without EDM........................................ 42
9.1.4 G9SR-BC wiring without dynamic testing without EDM ................................. 43
9.2 STAND-ALONE G9SR-AD...................................................................................44

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9.2.1 G9SR-AD wiring with dynamic testing with EDM ........................................... 44
9.2.2 G9SR-AD wiring with dynamic testing without EDM ...................................... 45
9.2.3 G9SR-AD wring without dynamic testing with EDM ....................................... 46
9.2.4 G9SR-AD wiring without dynamic testing without EDM ................................. 47
10 COMBINING G9SR UNITS .......................................................... 48
10.1 INPUT LOOP.......................................................................................................49
10.2 OUTPUT LOOP....................................................................................................50
10.3 INPUT LOOP AND OUTPUT LOOP ..........................................................................51
11 APPENDIX A: WIRING EXAMPLES .......................................... 52
11.1 WIRING EXAMPLES G9SR-BC□-□UNIT ...............................................................52
11.1.1 G9SR-BC□-□ in E-stop application up to PLe ................................................. 52
11.1.2 G9SR-BC□-□ in E-Stop application up to PLd................................................. 54
11.1.3 G9SR-BC□-□ for door interlocking up to PLe with F3S-TGR-N__C .............. 56
11.1.4 G9SR-BC□-□ for door interlocking up to PLd with F3S-TGR-N__C .............. 58
11.1.5 G9SR-BC□-□ with Safety Sensors in applications up to PLe (F3S-TGR-CL) . 60
11.2 WIRING EXAMPLES G9SR-AD□-□UNIT ...............................................................62
11.2.1 G9SR-AD□-□ in E-Stop application up to PLe................................................. 62
11.2.2 G9SR-AD□-□ in E-Stop application up to PLd ................................................ 64
11.2.3 G9SR-AD□-□ with door interlocking up to PLe with F3S-TGR-N__C............ 66
11.2.4 G9SR-AD□-□ with door interlocking up to PLd with F3S-TGR-N__C............ 68
11.2.5 G9SR-AD□-□ with Safety Sensors in applications up to PLe........................... 70
11.3 WIRING EXAMPLES G9SR-AD□-□UNIT WITH INPUT LOOP AND OUTPUT LOOP .........72
11.3.1 Machine example............................................................................................... 72
11.3.2 Description of the safety related control functions in this application ............ 72
11.3.3 Solution - block diagram................................................................................... 73
14.3.4 Function settings and DIP switch settings........................................................ 73
12 APPENDIX B: LOGGING OF TEST RESULTS ........................... 77

Operation manual G9SR
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INTRODUCTION
Thank you for purchasing a G9SR Safety Relay. This manual contains information
required to use the G9SR Safety Relay. Please thoroughly read and understand this
manual before you use the G9SR Safety Relay.
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 Factory Automation (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
WARNING! The G9SR system must be installed, configured, and incorporated
into a machine control system by a sufficiently trained and
qualified person. An unqualified person may not be able to
perform these operations properly, which may result in serious
injury.
WARNING! All actions that change the setup, modify the settings of switches
or involve testing must be managed. These actions may cause
serious injury when applied incorrectly.
Manual Configuration
Information on the operation of G9SR Safety Relays is provided in this manual. There
are no related manuals.
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.

Operation manual G9SR
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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 NONINFRINGEMENT, 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, EXPRESSED 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.

Operation manual G9SR
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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.

Operation manual G9SR
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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.

Operation manual G9SR
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SAFETY PRECAUTIONS
Definition of Precautionary Information
The following notation is used in this manual to provide precautions required to ensure
safe usage of a G9SR Safety Relay. The safety precautions that are provided are
extremely important to safety. Always read and heed the information provided in all
safety precautions. The keywords and their definitions are as given below.
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 significant property
damage.
C aution ! Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury or in property damage.
Precautions for Safe Use
Indicates precautions on what to do and what not to do to ensure
using the product safely.
Precautions for Correct Use
Indicates precautions on what to do and what not to do to ensure
proper operation and performance.
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.
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.

Operation manual G9SR
XII
In order to use the G9SR system safely, the precautions listed in this manual indicated by
alert symbols and descriptions must be followed. Failure to follow all precautions and
alerts may result in an unsafe use or operation.
The design of a safety control function follows the requirements of:
- the risk assessment acc. EN ISO 12100-1.
This step defines the measures needed in risk reduction.
- the basic principles of machinery safety acc. EN ISO 13849-1
- the basic principles for electrical safety acc. EN 60204-1
In addition it is required to check the structure of the entire safety system (EN ISO
13849-1), the diagnostic coverage and the robustness against common cause failures.
This all is needed to check the calculation of the safety system reliability.
The customer must implement measures to ensure compliance with these standards.
After installation, a comparison between the specified and the installed safety function is
mandatory. This final step is verifying the function of the safety system. Make sure that
in the final step that all requirements defined based on the risk assessment are met.
Detailed information about validation can be found in ISO 13849-2.

Operation manual G9SR
XIII
Important Safety warnings
WARNING! Read and understand this section prior to installing a G9SR
system.
Whether a specific machine application and G9SR system installation complies with
applicable directives and standards depends on the proper application, installation,
maintenance and operation of the G9SR system. These items are the responsibility of the
purchaser, installer and employer. The employer is responsible for the selection and
training of personnel to properly install, operate and maintain the machine and its
safeguarding systems. A G9SR system should only be installed verified and maintained
by a qualified person. A qualified person is defined as "an individual who understands, is
trained on, and demonstrates competence with the construction, operation or
maintenance of the machinery and the hazards involved."
To use the G9SR system the following requirements must be met:
•Observe the instructions in this manual regarding test regulations (e.g. on use,
mounting, installation or integration into the existing machine control system)
carefully.
•Periodic tests must be carried out by specialist personnel or specially qualified
and authorized personnel and must be recorded and documented to ensure that
the tests can be reconstructed and retraced at any time.
•The operating instructions must be made available to the operator of the
machine where the G9SR system is installed.
•The machine operator is to be instructed in the use of the device by specialist
personnel and must be instructed to read the operating instructions.
•The guarded machine must have a consistent stopping time and adequate
control mechanisms.
This manual refers to FW release 1.0.0 and HW release 1.0 and 2.0.

Operation manual G9SR
XIV
WARNING
This is the Operation Manual for the G9SR Safety Relays.
Obey the following warnings during system construction to ensure that safety-related
components are configured to enable the system functions to sufficiently operate.
●Risk Assessment
The proper use of the safety devices described in this manual as they relate to
installation conditions and mechanical performance and functions is a prerequisite
for its use.
When selecting or using the safety devices, risk assessment must be performed
during the development stage of the equipment or facilities to identify potential
danger factors in equipment or facilities in which the safety devices are to be applied.
Suitable safety devices must be selected under the guidance of a sufficient risk
assessment system. An insufficient risk assessment system may result in the selection
of unsuitable safety devices.
• Typical related international standards: EN ISO 12100-1, Safety of Machinery --
Principles of Risk Assessment
●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: EN ISO 12100-1, Safety of Machinery --
Basic Concepts and General Principles for Design EN 61508, Safety Standard for
Safety Instrumented Systems (Functional Safety of Electrical/Electronic/
Programmable Electronic Safety-related Systems)
●Role of Safety Devices
The safety devices are provided with safety functions and mechanisms as stipulated
in relevant standards, but suitable designs must be used to enable these functions and
mechanisms to operate properly inside system constructions containing safety-related
components. Build systems that enable these functions and mechanisms to perform
properly, based on a full understanding of their operation.
• Typical related international standards: ISO 14119, Safety of machinery --
Interlocking devices associated with guards -- Principles for design and selection

Operation manual G9SR
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WARNING
●Installation of Safety Devices
The construction and installation of systems with safety-related components for
equipment or facilities must be performed by technicians who have received suitable
training.
•Typical related international standards: EN ISO 12100-1, Safety of Machinery --
Basic Concepts and General Principles for Design EN 61508, Safety Standard
for Safety Instrumented Systems (Functional Safety of Electrical/Electronic/
Programmable Electronic Safety-related Systems)
●Compliance with Laws and Regulations
This safety device conforms to the relevant regulations and standards, but make sure
that it is us
ed in compliance with local regulations and standards for the equipment or
facilities in which it is applied.
•Typical related international standards: EN 60204, Safety of Machinery --
Electrical Equipment of Machines
●Observing Precautions for Use
When putting the selected safety device to actual use, heed the specifications and
precautions in this manual and those in the instruction manual that comes with the
product. Using a product in a manner that deviates from these specifications and
precautions will lead to unexpected failures in equipment or devices, and to damage
resulting from such failures, 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 manual to
ensure that the person to whom the device or equipment is being moved or
transferred will be able to operate it properly.
•Typical related international standards: EN ISO 12100-1, Safety of Machinery --
Basic Concepts and General Principles for Design EN 61508, Safety Standard
for Safety Instrumented Systems (Functional Safety of Electrical/Electronic/
Programmable Electronic Safety-related Systems)

Operation manual G9SR
XVI
WARNING
Electric shock may occur. Do not touch any terminals while power is being
supplied.
Serious injury may possibly occur due to loss of required safety functions.
Do not use the G9SR Safety Relay's test outputs or standard outputs as
safety outputs.
Serious injury may possibly occur due to loss of required safety functions.
Do not use indicators on the G9SR Safety Relay for safety operations.
Serious injury may possibly occur due to breakdown of safety outputs or
test outputs. Do not connect loads beyond the rated values to the safety
outputs and test outputs.
Serious injury may possibly occur due to loss of required safety functions.
Wire the G9SR series Controller properly so that the 24VDC line does NOT
touch the outputs accidentally or unintentionally.
Do not try to disassemble, repair, or modify this product. Doing so may
cause the safety functions to stop working properly.
Do not use the G9SR Safety Relays in environments where flammable or
explosive gases are present. Doing so may result in an explosion.
Do not use the auxiliary output for safety applications.
Do not connect the 0V line to PE.
Serious injury may possibly occur due to loss of required safety functions.
Serious injury may possibly occur due to loss of required safety functions.
Perform user testing and confirm that all of the G9SR Safety Relay’s
configuration data and operation is correct before starting system operation.
Serious injury may possibly occur due to loss of required safety functions.
When replacing a G9SR Safety Relay, confirm the model of the Controller
is correct and configure the replacement Controller suitably and confirm
that it operates correctly.
Serious injury may possibly occur due to loss of required safety functions.
Use devices and parts related to safety functions according to legal
regulations in the applicable country. Use certified items compliant with
safety standards corresponding to the intended application.
Perform daily and 6-monthly inspections for the G9SR Safety Relays.
Otherwise, the system may fail to work properly, resulting in serious injury.

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XVII
CAUTION
Connect the AD201-□ and EX031-□units to the same power supply.
Do not remove a terminal block while the unit is powered ON.
It may damage the unit.
Do not remove the 0V connection while the unit is powered ON.
It may damage the unit.

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XVIII
PRECAUTIONS FOR SAFE USE
●Handling
Do not drop the G9SR Safety Relay or subject it to excessive vibration or mechanical
shock. The G9SR Safety Relay may be damaged and may not function properly.
●Installation and Storage Environment
Do not use or store the G9SR Safety Relay in any of the following locations:
• 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 water, oil, or chemicals
• Locations subject to shock or vibration
• The information of section ‘Operating Environment’ (§2.1 on page 4) is also
applicable for storage and transport of G9SR products.
Take appropriate and sufficient measures when installing systems in the following
locations. Inappropriate and insufficient measures may result in malfunction.
• 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
This is a class A product designed for use in industrial environments. In residential areas
it may cause radio interference, in which case the user may be required to take adequate
measures to reduce interference.
●Installation and Mounting
• After unpacking and before installing the G9SR system please check the mechanical
condition of the system carefully. Do not install a mechanically damaged product.
Return this to your OMRON service for inspection or repair. Failure to do so may
result in serious injury.
• Do not drop the products. Dropping the products may lead to internal or external
damage. Please return a G9SR system that was dropped on the floor to your OMRON
service for inspection or repair. Failure to do so may result in serious injury.
• Make sure to test the operation of the G9SR system after installation to verify that the
G9SR system operates as intended. Make sure to stop the machine until the test is
completed. Unintended function settings may cause serious injury.
• Configure the system with an interlock function that prevents the machine from
being restarted. Failure to do so may result in serious injury.
• Install the interlock switch in a location that provides a clear view of the entire
hazardous area and where it cannot be activated from within the hazardous area.

Operation manual G9SR
XIX
• External indicators (if applicable) must be installed where they are clearly visible to
workers from all the operating positions.
• Make sure that the G9SR system is securely mounted and its cables and connectors
are properly connected.
• Make sure that foreign objects such as water, oil, or dust do not enter the inside of the
G9SR system.
• Perform an inspection for all G9SR systems (as described in section 3 Test on page
7) when using series connections, perform inspections for every connected G9SR
system.
• Use the G9SR Safety Relay within an enclosure with IP54 protection or higher
according to IEC/ EN 60529.
• Use DIN Track (TH35-7.5/TH35-15 according to IEC 60715) to install the G9SR
Safety Relay into the control panel.
• Mount the G9SR Safety Relay to the DIN Track using PFP-M End Plates (not
included with the G9SR Safety Relay) to prevent it from falling off the DIN Track
because of vibration. Correctly mount all Units to the DIN Track.
• Install the G9SR Safety Relay in the vertical direction to ensure adequate cooling.
See also § 2.2 Step 2: Mechanical installation on page 4.
• Space must be provided around the G9SR Safety Relay, at least 25 mm from its side
surfaces and at least 50 mm from its top and bottom surfaces, for ventilation, wiring
and Unit replacement.
• Be sure to lock all locking mechanisms, such as those on I/O terminal blocks and
connectors, before attempting to use the G9SR Safety Relay.
Turn OFF the power supply before performing any of the following.
• Connecting or disconnecting Expansion I/O Units, Option Boards, or any other Units
• Assembling the G9SR Safety Relay
• Connecting cables or wiring
• Connecting or removing terminal blocks
●Installation and Wiring
• Disconnect the G9SR Safety Relay from the power supply before starting wiring.
Devices connected to the G9SR Safety Relay may operate unexpectedly.
• Properly apply the specified voltage to the G9SR Safety Relay inputs. Applying an
inappropriate DC voltage or any AC voltage may result in a product failure, reduced
safety functions, damage to the product.
• Be sure to separate the communications cables and I/O cables from high-
voltage/high-current lines.
• Be cautious not to get your fingers caught when attaching terminal blocks to the
G9SR Safety Relay.
• Incorrect wiring may lead to loss of safety functions. Wire conductors correctly and
verify the operation of the G9SR Safety Relay before using the system in which the
G9SR Safety Relay is incorporated.
• Connect no more than the specified number of additional G9SR-BC units and/or
G9SR-EX units to a G9SR-AD unit.

Operation manual G9SR
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• Do not short-circuit the output line to the +24V line of the G9SR-BC□-□ because it
will set the output to (always) ON.
• Do not connect the 0V of the power supply to Protective Earth (PE).
• Ensure the configuration of the system complies with the required performance level
(PLr) of the safety control system that is defined during the risk assessment for the
machine according EN ISO 12100-1.
• Do not connect any of the input lines to a DC power supply of more than 24V
DC+20%. Do not connect the input lines to an AC source. An AC power supply
(>30 VAC) may damage the unit.
• Ensure that the AD201-□ and EX031-□units are connected to the same power
supply.
• Do not use the auxiliary output for safety applications.
●Power Supply Selection
Use a DC power supply satisfying the following requirements.
• The secondary circuit of the DC power supply must be isolated from the primary
circuit by double insulation or reinforced insulation.
• The output characteristic requirements defined in UL 508 for class 2 circuits or
control voltage current circuits are satisfied.
• The output hold time must be 20ms or longer.
• The DC power supply must be an SELV power supply that satisfies the requirements
of IEC/EN 60950-1 and EN 50178.
• The power supply must be limited to a maximum current of 8A.
●Periodic Inspections and Maintenance
• Disconnect the G9SR Safety Relay from the power supply before replacing the
Relay. Devices connected to the G9SR Safety Relay may operate unexpectedly.
• Do not disassemble, repair, or modify the G9SR Safety Relay. Doing so may lead to
loss of safety functions.
●Disposal
Be cautious not to injure yourself when dismantling the G9SR Safety Relay.
This product has been designed to minimize environmental impact. For this reason
please note that disposal of irreparable/unserviceable devices has to be in compliance
with your local/national rules and regulations.