KEYENCE GL-R User Manual

Safety Light Curtain

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NOTICE

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96M12000

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GL-R Series

Instruction Manual

Detailed information about functions and use of the GL-R series is also described in the "GL-R Series User's Manual", and the configuration software of "Safety Device Confi gurator" is needed to use all functions of the GL-R. In order to acquire the "GL-R Series User 's Manual" and "Safety Device Configurator", download them from the KEYENCE website or call the nearest KEYENCE office. <KEYENCE website> http://www.keyence.com

This Instruction manual describes handling, operation, and precautionary information for the GL-R Series Safety Light Curtain ("GL-R"). Read this Instruction manual thoroughly before operating the GL-R in order to understand the device features, and keep this Instruction manual readily available for reference. Ensure that the end user of this product receives this manual. In this Instruction manual, "GL-RF" represents the finger protection type with the detection capability of 14 mm, "GL-RH" represents the hand protection type with the detection capability of 25 mm, "GL-RL" represents the body protection type with the detection capability of 45 mm and "GL-R" represents all the models including the GL-RF, GL-RH and GL-RL. This manual is the original instruction manual.

Symbols

The following symbols alert you to important messages. Be sure to read these messages carefully.

It indicates a hazardous situation which, if not avoided, will result in death or serious injury.

It indicates a situation which, if not avoided, could result in product damage as well as property damage.

It indicates additional information on proper operation.

Point

It indicates tips for better understanding or useful information .

Reference

Indicates reference pages in this or another manual.

Safety Information for GL-R Series

 General precautions

• You must verify that the GL-R is operating correctly in terms o f functionality and performance before the start of machine and the operation of the GL-R.

• KEYENCE does not guarantee the function or performance of the GL-R if it is used in a manner that differs from the GL-R specifications contained in this user's manual or if the GL-R is modified by the customer.

• When using the GL-R to protect machine operators against a hazard or hazardous zone or using the GL-R as a safety component for any purpose, always follow the applicable requirements of the laws, rules, regulations and standards in the country or region where the GL-R is used. For such regulations, you should directly contact to the regulatory agency responsible for occupational safety and health in your country or region.

• Depending on the type of machine on which the GL-R is to be installed, there may be special safety regulations related to the use, installation, maintenance, and operation of the safety component. In such a case, you must fulfill such safety regulations. The responsible personnel must install the GL-R in strict compliance with such safety regulations.

• The responsible personnel must do the training to the assigned personnel for the correct use, installation, maintenance, and operation of the GL-R. "Machine operators" refers to personnel who have received appropriate training from the responsible personnel and are qualified to operate the machine correctly.

• Machine op erators must have specialized training for the GL-R, and they must understand and fulfill the safety regulations in the country or region in which they are using the GL-R.

• When the GL-R fails to operate, machine operators must immediately stop the use of the machine and the GL-R and report this fact to the responsible personnel.

• The GL -R is designed with the assumption that it would be correctly installed in accordance with the installation procedures described in this user's manual and correctly operated according to the instructions in this user's manual. You must perform an appropriate installation of the GL-R after performing a sufficient risk assessment for the target machine.

• Be sure to absolutely confirm that there is nobody in the hazardous zone, before you remove the GL-R from the machine for replacement or disposal.

• When disposing the GL-R, always follow the applicable requirements of the laws, rules, regulations and standards in the country or region where t he GL-R is used.

• The GL -R should be processed as an industrial waste product when being disposed.

 Precaution on use

 Operators

• In order to operate the GL-R correctly, the responsible personnel and machine operators must fulfill all of the procedures described in this user's manual.

• No person other than the responsible personnel and machine operators should be allowed to install or test the GL-R.

• When performing electrical wiring, always fulfill the electri cal standards and regulations for the country or region in which the GL-R is used.

 Environment of use

• Do n ot use the GL-R in an environment (temperature, humidity, interfering light, etc.) that does not conform to the specifications contained in this user's manual.

• Be s ure to confirm that the GL-R keeps normal operation when electromagnetic radiation is generated by wireless devices. (If you use wireless devices such as cellular phones or transceivers in the vicinity of the GL-R.)

• The GL-R is not designed to be explosion-proof. Never use it in the presence of flammable or explosive gases or elements.

• Be sure to confirm no deterioration in product quality if you use the GL-R in the presence of substances, such as heavy smoke, particu late matter, or corrosive chemical agents.

• Do n ot install the GL-R in areas where the GL-R is exposed to intense in terference light such as direct sunlight, and direct or indirect light from an inverter-type fluorescent lamp (rapid-start type lamp, high-frequency operation type lamp, etc).

• Be sure to absolutely confirm that there is nobody in the hazardous zone, before the interlock is released (i.e. the machine system restarts) by the interlock reset mechanism. Failure to follow this warning results in significant harm to the machine operators, including serious injury or death.

• Be sure to absolutely confirm that there is nobody in the hazardous zone before the override function is activated. Failure to follow this warning results in significant harm to the machine operators, including serious injury or death.

 Tar g et m a chi n e

• The GL-R has not undergone the model certification examination in accordance with Article 44-2 of the Japanese Industrial Safety and Health Law. The GL-R, therefore, cannot be used in Japan as a "Safety Device for Press and Shearing machines" as established in Article 42 of that law.

• The machine on which the GL-R is to be installed must be susceptible to an emergency stop at all operating points during its operation cycle. Do not use the GL-R for machines with irregular stop times.

• Do n ot use the GL-R for power presses equipped with full-revolution clutches.

• The GL-R cannot be used as a PSDI because it does not fulfill the requirements of OSHA

1910.217(h). Refer to OSHA 1910.217 for the PSDI mode.

• Do not use the GL-R to control (stop forward motion, etc.) trains, cars and other transportation vehicles, aircraft, equipment for use in space, medical devices, or nuclear power generation systems.

• The GL-R is designed to protect people or objects from going into/approaching detection zone against machine's hazard or hazardous zone. It cannot provide protection against objects or materials that are expelled from the machine's hazard or hazardous zone, so you must establish additional safety measures such as installing safeguards when there is the possibility of such projectiles.

 Installation

• The GL-R must be installed only after ensuring the minimum safety distance between the GL-R and the hazardous zone or hazard as established by the applicable regulations in the country or region in which the GL-R is used. (e .g. EN ISO13855 (ISO 13855) in EU countries)

• Cho ose locations for the installation of the GL-R transmitters and receivers so that they are not subject to the effects of light reflected from glossy surfa ces in the area.

• Corre ct operation and detection is not possible if the receiver has a different beam axis spacing (detection capability) from that of the transmitter. You must verify that the beam axis spacing (detection capability) is the same between the transmitter and the receiver when installing the GL-R.

• The G L-R must be installed so that the machine operator is able to go into or approach the hazardous zone or hazards only by passing through the detection zone of the GL-R. Strictly avoid installation that allows the machine operator or a part of the machine operator's body to go into or approach the hazardous zone or hazards without passing through the protective zone of the GL-R or to remain in position between the protective zone of the GL-R and the hazardous zone or hazard. In a case w here you install the GL-R units in series (series connection), you must always check the installation carefully whether you follow this warning, especially after installation and maintenance.

• You must always perform the pre-check tests after installing the GL-R in accordance with the pre-check test procedures, such as items specified in this user's manual, in order to verify that the test pieces can be detected in all of t he detection zones.

• Inte rlock reset mechanisms (such as switches) must be installed so that the entire hazardous zone can be checked by the responsible personnel. Interlock reset mechanisms should not be accessible from within the hazardous zone.

• Mut ing is a function to allow a temporary automatic suspension of the GL-R safety functions while the GL-R is receiving a signal from muting devices (such as sensors or switches). Therefore, additional safety measures are required for the machine on which the GL-R is installed in order to ensure safety while the muting is activated.

• Mut ing devices, the installation of those devices and the procedure to activate the muting function must fulfill the conditions specified in this user's manual and the requirements of the laws, rules, regulations and standards in the country or region in which the GL-R and those devices are used. Failure to follow this warning may result in significant harm to the machine operators, including serious injury or death .

• When you install muting devices (such as sensors or switches) for muting, the following conditions must be fulfilled. (1) Muting devices must be installed so that the muting cannot be activated if the

hazardous zone of the machine is in an unsafe condition or cycle.

(2) Muting devices must be installed so that the muting cannot be activated even if the

personnel is accidentally approaching the detection zone of the GL-R.

• The muting device must be installed such that only responsible personnel have access to that device to change the installation or orientation. Special tools must be required to ensure that only responsible personnel are capable of installation, orientation or change of muting device.

• Only the responsible personnel may be allowed to install or wire the devices to activate the muting function.

• The installat ion of a muting lamp may be required by the laws, rules, regulations, and standards in the country or region in which the GL-R is used if you apply the muting function. It depends on the machine application and/or the result of your risk assessment. If it is necessary for you to provide a muting lamp, you must fulfill the requirements because you are fully responsible for installation of the muting lamp.

• The override is a function to allow a temporary manual suspension of the safety functions of the GL-R. Therefore, additional safety measures are required for the entire machine system on which the GL-R is installed in order to ensure safety while the override is activated.

• The override devices, the installation of those devices and the procedures to activate the override must fulfill the conditions specified in this manual as well as the requirements of the laws, rules, regulations and standards in the country or region in which the GL-R and those devices are used. Failure to follow this warning may result in significant harm to the machine operators, including serious injury or death .

• The override devices, which are used for activation of override, must be manual operating devices. When installing the devices to activate the override, those devices must be installed so that the whole hazardous zone can be checked by the responsible personnel and so that it is not possible for machine operators to operate those devices in the hazardous zone.

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• The installa tion of the indication for override may be required by the laws, rules,

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regulations, and standards in the country or region in which the GL-R is used if you apply the override function. It depends on the machine application and/or the result of your risk assessment. If it is necessary for you to provide the indication for override, you must fulfill the requirements because you are fully responsible for installation of the indication for override.

• The customer is fully responsible for complying with the requirements for muting and/or override. Those who use muting and/or override must fulfill all of the requirements related to muting and/or override. KEYENCE accepts NO responsibility and NO liability for any damage or any injury due to the unauthorized installation, usage or maintenance, which are not specified in this user's manual, and/or due to noncompliance with the laws, rules, regulations and standards in the country or region in which the GL-R is used.

• W hen the reduced resolution function is applied, the detection capability varies according to your configuration. Make sure to accurately calculate the safety di stance according to the detection capability, and install the GL-R at a distance greater than or equal to the minimum safety distance away from the hazardous zone or hazard. The installation of additional safety measures, such as safeguarding, may be required if the detection capability varies due to the configuration of reduced resolution. On your own responsibility, you must perform the risk assessment based on your configuration of reduced resolution in order to reduce the risk.

• When the fixed blanking function is applied, a hazardous clearance that is not protected by the GL-R may be generated between the obstacle and the GL-R. You must install an additional safety measure such as a safeguard for this clearance.

• S ecurely tighten mounting brackets and cable connectors used for the installation of the GL-R in accordance with the torque values specified in this user's manual.

• When optical synchronization system is applied and Channel A or B is configured, the response time is longer than the other c ase. Make sure to accurately calculate the safety distance according to the response time, and install the GL-R at a distance greater than or equal to the minimum safety distance away from the hazardous zone or hazard.

 Circuit design and wiring

• Always turn off t he power to the GL-R when performing electrical wiring.

• You must fulfill the electrical standards and regulations in the country or region in

which the GL-R is being used when you perform the electrical wiring.

• To avoid the risk of electric shock, do not connect any of the GL-R inputs to DC power sources outside of the range of 24 V DC + 20% or to any AC power source.

• To avoid the risk of electric shock, be sure that any hazardous voltage is isolated from all wiring of the GL-R with reinforced insulation or double insulation.

• In order to fulfill the requirements in IEC61496-1, UL61496-1, EN61496-1 and UL508, the power supply for the GL-R must fulfill the conditions listed below.

(a) A rated output voltage of 24 V DC (SELV, Overvoltage Category ) within ±20%. (b) Double insulation or reinforced insulation between the primary and secondary

circuits. (c) Output holding time of 20 ms or more. (d) A power supply must fulfill the requirements of the electrical safety and

electromagnetic compatibility (EMC) regulations or standards in all countries

and/or regions where the GL-R is used. (e) A secondary circuit of power supply (output) must fulfill the requirements for

Class 2 Circuits or Limited Voltage/Current Circuits specified in UL508, if the

GL-R is used in the United States or Canada.

• Do not insta ll the electric wiring of the GL-R together with or in parallel with any highvoltage electrical or power lines.

• Bot h OSSD outputs provided on the GL-R must be used to establish a safety-related machine control system. Establishing a safety-related machine control system with just one of the OSSD outputs cannot stop the machine due to an OSSD output malfunction and may result in significant harm to the machine operators, including serious injury or death.

• W hen using PNP output type cables, do not cause a short-circuit between the OSSD and +24V. Otherwise, the OSSDs keep staying at the ON-state and it causes a dangerous situation.

• When using PNP output type cables, be sure to connect the load between the OSSD and 0V to avoid a dangerous situation. If the load is incorrectly connected between th e OSSD and +24V, the logic of the OSSD operation will be reversed and the OSSD will change to an ON state when the GL-R detects an interruption in the detection zone. This is a dangerous situation.

• When using NPN output type cables, do not cause a short-circuit between the OSSD and 0V. Otherwise, the OSSDs keep staying at the ON-state and it causes a dangerous situation.

• W hen using an NPN output type cable, be sure to connect the loa d between the OSSD and +24V to avoid a dangerous situation. If the load is incorrectly connected betwe en the OSSD and 0V, the logic of the OSSD operation will be reversed and the OSSD will change to an ON state when the GL-R detects the interr uption in the detection zone. This is a dangerous situation.

• Regardless of whether the cables are PNP or NPN type, you must fulfill the requirements of Clause 9.4.3 in IEC60204-1: 2005 for protection against maloperation due to earth fault.

• All outputs, other than OSSDs, are not allowed to be used as safety outputs for a safetyrelated machine control systems. Usage of these functions as safety outputs may result in significant harm to the machine operators, including serious injury or death.

• The wait input is not allowed to be connected to the output from any components comprising a part of the safety-related machine control system. If the wait input is connected to the output of a safety component it may result in significant harm t o the machine operators, including serious injury or death.

• Th e transmitter and receiver cables must be within the lengths specified in this user's manual. Usage of cables longer than the specified length may cause the improper operation of safety functions and may cause a dangerous situation.

 Testing and maintenance

• You must always perform the pre-check test in accordance with the checklist, after maintenance, adjustment or alignment of the target machine or the GL-R and before the machine startup.

• If the GL-R does not operate properly when you perform a pre-check test in accordance with the checklist specified in this user's manual, do not operate the machine.

• You must periodically examine the machine to verify that all brakes, other stop mechanisms, and control devices operate reliably and correctly in addition to checking the GL-R.

• The responsible personnel must perform maintenance procedures as specified in this user's manual to ensure safety to the machine and GL-R.

 Precautions on regulations and standards

 CE Marking

KEYENCE Corporation has confirmed that this product complies with the essential requirements of the applicable EC Directive, based on the following specifications. Be sure to consider the following specifications when using this product in a member state of the European Union.

• Machinery Directive (2006/42/EC) The GL-R is a safety component as established by the European Union's Machinery Directive (2006/42/EC) Annex V. The GL-R complies with the following EN Standards and has been certified by TÜV SÜD Product Service GmbH.

• EN61496-1 Type 4 ESPE

• EN61496-2 Type 4 AOPD

• EN50178

• EN61508, Part 1 to 4 SIL3

• EN62061 SIL CL3

• EN ISO13849-1 Category4, PLe

• EMC Directive (2004/108/EC)

The GL-R complies with the following EN Standards

• EN55011 Class A

• EN61496-1 Type 4 ESPE

These specifications do not give any guarantee that the end-product with this product incorporated complies with the essential requirements of EMC Directive. The manufacturer of the end-product is solely responsible for the compliance of the end-product itself according to the EMC Directive.

 UL Certificate and North American Regulations

The GL-R complies with the following North American and international standards and has received UL certification and C-UL certification. (CCN: NIPF/NIPF7, File No:E184802)

• UL61496-1 Type 4 ESPE

• UL61496-2 Type 4 AOPD

• UL508

• UL1998

The GL-R also complies with the following North American regulations.

• FCC Part 15B Class A Digital Device

• ICES-003 Class A Digital Apparatus

 Model Certification Examination as a "Safety Devices for Presses and

Shearing Machines"

The GL-R has not obtained the model certification examination in accordance with Article 44-2 of the Japanese Industrial Safety and Health Law. Therefore, the GL-R cannot be used in Japan as a "Safety Devices for Presses and Shearing Machines" as established in Article 42 of that law.

 Other standards

The GL-R has been designed in consideration of the following standards and regulations. For details regarding the following standards, contact the third-party certification organization, such as UL or TÜV.

• EN60204-1

• EN692

• EN693

• OSHA 29 CFR 1910.212

• OSHA 29 CFR 1910.217

• ANSI B11.1 - B.11.19

• ANSI/RIA R15.06 - 1999

• SEMI S2

• "Guidelines for Comprehensive Safety Standards of Machinery", July 31, 2007, number 0731001

issued by Ministry of Health, Labor, and Welfare in Japan.

Standard set

• GL-R transmitter (Transmitter) x 1

• GL-R receiver (Receiver) x 1

• Test piece x 1

GL-RF : With diameter of 14 mm and length of 200 mm GL-RH : With diameter of 25 mm and length of 200 mm GL-RL : The test piece (diameter: 45 mm) is not supplied. Please acquire on your own.

• Instruction manual (this document) x 1

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Part Description

Point

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Transmitter

Beam center-line mark

Receiver Back side

Center Indicators

7-segment display

Function indicators

Beam center-line mark

Setting switch (2 switches)

Setting switch (6 switches)

Connector for the interface unit (GL-R1UB)

Top

Bottom

End cover

Connector for the unit connection cable

Transmitter Receiver

Switch

No.

Function Configuration

Channel

Channel 0 (Not applied) (Default)

Use Channel for light interference prevention when optical synchronization system is applied. For details, refer to the "Light interference prevention function" (page 5).

Channel A

Channel B

Switch

No.

Function Configuration

Center indicator

ON (Green) when all beam axes are clear (Default)

OFF when all beam axes are clear (Green OFF)

Reduced resolution (Safetyrelated function)

Reduced resolution is not ap plied (Default).

Reduced resolution (one optical beam) is applied.

Reduced resolution (two optical beams) is applied.

Channel

Channel 0 (Not applied) (Default)

Use Channel for light interference prevention when optical synchronization system is applied. For details, refer to the "Light interference prevention function" (page 5).

Channel A

Channel B

Beam center-line mark

Beam center-line

Specified target detection

capability (position A)

Protection height

Specified target detection capability (position B)

Detection height

a: Beam axis spacing b: Beam axis diameter c: Detection capability

Detection zone Protection zone

Specified target detection capability

Detection height Protection height

Operating distance

Beam center-line : An optical path joining the optical center of the emitting element on the transmitter to

Detection height : The height from the top beam center-line to the bottom beam center-line (length). Protection height : An object approaching the detection zone from the top of the detection height is first

* Refer to the following diagram for an explanation of beam center-line, detection height and protection

height.

the optical center of the corresponding receiving element on the receiver. The GL-R must be installed so that the beam center-line mark on the transmitter and that on the receiver face one another and are located at the same height.

detected at point A, which is the distance of the detection capability from the top of the detection height. The equivalent position on the bottom is called point B. The height from the top edge of the specified target detection capability that exists at point A to the bottom edge of the specified target detection capability that exists at point B is called The "protection height". The following calculation formula can be defined: Protection height = "Detection height" + ( 2 x "the specified target detection capability" ) – "beam axis diameter".

* The side where the end cover has already been installed at shipment is the top side.

 Setting switch

Detection zone : The zone in which the specified target detection capability can be detected. The

Protection zone : The square area formed with the protection height and the operating distance,

* Refer to the following diagram for detection zone and protection zone.

detection zone of the GL-R indicates a square area formed with the detection height and the operating distance. When an object of the specified target detection capability is present in this area, the light of the GL-R is blocked, and then the OSSD goes to OFF state.

which is broader than the detection zone. When an object of the specified target detection capability is present in this area, the light of the GL-R is blocked, and then the OSSD goes to OFF state.

Functions and Features

The functions and features of the GL-R are described in this section.

For more information about these functions, see "GL-R Series User's Manual".

Point

 Wiring system

The following three types of wiring systems are available in the GL-R series.

Wiring system Optical synchronization system One-line system Wire synchronization system

Wiring diagram

Transmitter Receiver Transmitter Receiver Transmitter Receiver

• The response time varies according to the configuration of Channel. "Response time (OSSD)" (page 9)

• The det ection capability varies according to the configuration of reduced res olution.

• The configuration of the setting switch is applied when the power is supplied.

• When th e GL-R is in series connection, the setting switch configuration of the main unit

is applied regardless of the setting switch configuration of the sub unit.

• When th e center indicator and reduced resolution are configured by using the

configuration software, the setting switch must be configured by default. Otherwise an error occurs.

• When th e GL-R operates in wire synchronization system, the setting switch for Channel

must be configured by default. Otherwise an error occurs.

"Wiring system" (page 3)

• Simplified wiring.

• The unit connection cable is

not needed for the transmitter.

• The input and output functions on the transmitter are not available.

• There is a maximum limit for the total length of cables.

5-core cable 11-core cable

Advantage

Limitation

Applicable

cable

• Wiring is not needed be tween the transmitter and receiver.

• The Transmitter and the receiver can operate on different power supplies.

• The input and output functions on the transmitter are not available.

• All indicators other than "Power" are not available on the transmitter.

Transmitter

5-core cable Series connection cable

5-core cable

Receiver

11-core cable

• All functions of the GL-R are

available.

• Wiring is needed between the transmitter and the receiver.

7-core cable 11-core cable

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Wiring system



Optical/wire synchronization system

 One-line

system

 Series connection cable

 Unit connection cable



Unit connection cable (for extension use) + Extension cable

* The unit connection cable can not be

connected on the upper part of the GL-R.

Cable for the transmitter 5-core

Cable combination

Cable for the receiver

OSSD output 

AUX (auxiliary) output 

Error output  

Muting function 

Partial muting function   

Muting bank function 

Muted condition output   

Muting lamp output 

Override function () ()

Interlock function () () () ()

Available function

 : Available without the configuration software  : Available with the configuration software () : Available without the configuratio n software, Functionality can be expanded when using the configuration software.

Interlock-reset-ready output

EDM function () () () ()

Wait input 

Alert output  

Clear/Block output  

Reset input (for error) 

Reduced resolution function () () () () () () () ()

Fixed blanking function 

Channel configuration (Light interference prevention function)

Center indicator configuration

Monitoring function 

Optical

synchronization

5-core 11-core 5-core 11-core 7-core 11-core 7-core 11-core



() () () ()  () () () ()

One-line Wire synchronization

Series connection



7-core 11-core

 Series connection

Up to three GL-R units can be serially connected and used as a single light curtain.

 OSSD

The OSSD is a safety-related control output. It connects to an external device (load), such as an FSD or MPCE. The GL-R generates self-diagnosis signals on its internal control circuit to perform diagnostics on the output circuit (OSSD). These signals periodically force the OSSD into a temporary OFF state when no interruption exists in the detection zone.

 Interlock function

Interlock is a function that prevents the OSSD from automatically going to the ON state from an OFF state. You can prevent the unintended start-up and/or the unintended restart of the machine if an interlock is applied to the GL-R.

 External device monitoring (EDM function)

EDM (External Device Monitoring) is a function of the GL-R that monitors the state of the control devices which are externally connected to the GL-R. The GL-R can detect a fault, such as welded contacts on external devices, as long as the EDM function is activated. This function is available only when connecting the 11-core cable to the receiver.

 Fixed Blanking

During normal operation, the OSSD remains in the ON state while the GL-R detects no interruption in the detection zone, and the OSSD goes to the OFF state when the GL-R detects interruption in the detection zone. On the other hand, if fixed blanking is enabled on certain beam axes, the OSSD remains in the ON state as long as the GL-R detects interruption on those beam axes and no interruption elsewhere in the detection zone.

 Reduced resolution

During normal operation, the OSSD goes to the OFF state when the GL-R detects interruption in the detection zone. On the other hand, if reduced resolution is enabled on the GL-R with the number of beam axes to be ignored and not monitored specified, the OSSD remains in the ON state even while the GL-R detects interruption on certain beam axes as long as the total number of interrupted beam axes is less than or equal to the number of ignored beams.

 Muting Function

The muting function is used to temporarily suspend the GL-R's safety functions while the GL-R receives a signal from muting devices (such as sensors or switches). Before this function can be used, the outputs from the muting devices must be connected to the muting input terminal on the GL-R. In addition, the configuration software provides the user with the opportunity to select the beam axes to be in the muted condition. You can minimize the number of beam axes to be in the muted condition by using the configuration software. Therefore, you can reduce the risk of interrupting the hazardous zone.

 Muting device

When using the muting device, it must be met with the following conditions.

• The muting device output must be N.O. (normally open).

• Output of the muting device must be the output with contacts, and must be PNP output type if PNP

output type cable is used, or NPN output type if NPN output type cable is used. Also, the muting device must be capable of 2 to 3 mA current.

• Do not use one muting device with multiple outputs in place of two or more muting devices. (Only one output per one muting device must be used.)

• If the muting device has a timer function that can adjust the output timing, do not use that function.

 Muting lamp

When using the muting lamp, it must meet the following conditions.

For an incandescent lamp : rated 24 V DC, 1 to 5.5 W For an LED indicator : rated current consumption must be 10 to 230 mA.

 Conditions for initiation of muting

Muted condition is initiated if all of the following conditions are met:

• Muting input 2 turns ON within 0.04 to 3 seconds after muting input 1 turns ON

• GL-R detects no interruption in the detection zone

• OSSD is in the ON state and remains for 0.5 seconds or more.

E GL-R-IM

 Conditions for termination of muting

Muted condition is terminated if one of the following conditions is met:

• Either of the muting inputs goes to the OFF state for at least 5 ms.

• Light curtain goes into the error condition

• Wait input goes to ON state

• The power supply is interrupted or restored.

• Maximum muting period of approx. 5 minutes has been passed.

 Changing of conditions for muting

The following muting conditions can be changed through the configuration software or a special procedures.

 Condition for Initiation of muting

1. Time period specification of 0.04 s to 3 s between muting input 1 and muting input 2 can be option.

2. Sequence specification of muting inputs can be option. (Default sequence: muting input 1 is first, muting input 2 is second.)

 Condition for termination of muting

3. Time period specification form muting input OFF to termination of muted condition. (Default is 0 seconds.)

4. Maximum muting period of approx. 5 minutes can be option.

 Condition for muting lamp

5. Error condition can be initiated if muting lamp has some failure.

If you choose these options according to your machine application, password setting and/or password input is required as a special procedure. The responsible personnel who intends to apply these options mentioned above from 1 to 4 have to perform the risk assessment based on the machine application.

 Muting bank function

The muting bank function can be activated through the configuration software. You can configure up to three muting banks on the GL-R. Each muting bank is a group of beam axes that will go into a muted condition upon activation of muting. In order to activate a muting bank, you must switch (ON and OFF) the muting bank input.

 Override function

During normal operation, the OSSD goes to an OFF state if the muting function is deactivated and an interruption remains in the detection zone of the GL-R. The OSSD OFF state will remain until the obstruction is removed. Override function allows a temporary manual suspension of the GL-R safety functions. This makes it possible to remove the obstruction remaining in the detection zone of the GL-R. (Machine is able to be manually operated on a temporary basis because the safety function of the GL-R is temporarily suspended.)

 Conditions for initiation of override

Override function is initiated if all of the following conditions are met and the wait input goes to the ON state within 0.04 s to 1 s after the override input turns ON state.

• GL-R is not in the error condition.

• GL-R detects interruption in the detection zone. (One or more beam axis is blocked.)

• OSSD is OFF state. (including interlock condition)

• Either of muting inputs, or both, turns ON state

 Conditions for termination of override

Override function is terminated if one of the following conditions is met:

• All of muting inputs turn OFF.

• Either the override input or wait input, or both, turn OFF.

• Light curtain goes to into the error condition

• Maximum override period of approx. 60 seconds has been passed.

 Changing of the condition for override

The following condition can be changed through the configuration software.

 Conditions that deactivate the override condition

• Maximum override period of approx. 60 seconds can be option.

If you choose this option according to your machine application, password setting and/or password input is required. The responsible personnel must securely manage the password. The responsible personnel who intends to apply this option must perform the risk assessment based on the machine application.

Installation

 Overview

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