KEYENCE SL-V User Manual

96M13258

Safety Light Curtain

SL-V Series

Ver.3

Instruction Manual

Introduction

This instruction manual describes handling, operation, and precautionary information for the SL-V Series Safety Light Curtain ("SL-V").

Read this instruction manual thoroughly before operating the SL-V 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, "SL-VF" represents the finger protection type with the detection capability of φ14 mm, "SL-VH" represents the hand protection type with the detection capability of φ25 mm, "SL-VL" represents the body protection type with the detection capability of φ45 mm, "SL-VFM" represents the finger protection and rigid enclosure type with the detection capability of φ14 mm, "SL-VHM" represents the hand protection and rigid enclosure type with the detection capability of φ25 mm, "SL-VLM" represents the body protection and rigid enclosure type with the detection capability of φ45 mm, and "SL-V" represents all the models including the SL-VF, SL-VH, SL-VL, SL-VFM, SL-VHM, and SL-VLM.

This manual is the original instruction manual.

Safety headings

This instruction manual uses the following headings to display important safety information. Strict adherence to the instructions next to these heading is required at all times.

Danger Failure to follow the instruction results in a significant harm to the machine operators including serious injury or death.

Caution Failure to follow the instruction may result in damage to the SL-V or to the machine on which it is installed.

NOTE	Provides additional information for proper operation.

Reference Provides advanced and useful information for operation.

Safety Precautions

General precautions

•You must verify that the SL-V is operating correctly in terms of functionality and performance before the start of machine and the operation of the SL-V.

•KEYENCE does not guarantee the function or performance of the SL-V if it is used in a manner that differs from the SL-V specifications contained in this instruction manual or if the SL-V is modified by the customer.

•When using the SL-V to protect machine operators against a hazard or hazardous zone or using the SL-V 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 SL-V is used. For such regulations, you should contact directly to the regulatory agency responsible for occupational safety and health in your country or region.

•Depending on the type of machine on which the SL-V 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 SL- V 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 SL-V. "Machine operators" refers to personnel who have received appropriate training from the responsible personnel and are qualified to operate the machine correctly.

•Machine operators must have specialized training for the SL-V, and they must understand and fulfill the safety regulations in the country or region in which they are using the SL-V.

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

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

•The SL-V should be processed as an industrial waste product when being disposed.

Precaution on use

Operators

Danger • In order to operate the SL-V correctly, the responsible personnel and machine operators must fulfill all of the procedures described in this instruction manual.

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

•When performing electrical wiring, always fulfill the electrical standards and regulations for the country or region in which the SL-V is used.

Environment of use

Danger • Do not use the SL-V in an environment (temperature, humidity, interfering light, etc.) that does not conform to the specifications contained in this instruction manual.

•Be sure to confirm that the SL-V 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 SL-V.)

•The SL-V 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 SL-V in the presence of substances, such as heavy smoke, particulate matter, or corrosive chemical agents.

•Do not install the SL-V in areas where the SL-V is exposed to intense interference light such as direct sunlight, and direct or indirect light from 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 a 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 a significant harm to the machine operators, including serious injury or death.

Target machine

Danger • The SL-V has not undergone the model certification examination in accordance with Article 44-2 of the Japanese Industrial Safety and Health Law. The SL-V, 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 SL-V is to be installed must be susceptible to an emergency stop at all operating points during its operation cycle. Do not use the SL-V for machines with irregular stop times.

•Do not use the SL-V for power presses equipped with full-revolution clutches.

•The SL-V 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 SL-V 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 SL-V is designed to protect the people or objects 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

Danger

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

•Choose locations for the installation of the SL-V transmitters and receivers so that they are not subject to the effects of light reflected from glossy surfaces in the area.

•Correct operation and detection is not possible if the receiver has a different number of beam axes from that of the transmitter. You must verify that the number of beam axes is the same between the transmitter and the receiver when installing the SL-V.

•Correct 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 SL-V.

•The SL-V 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 SL-V. 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 detection zone of the SL-V or to remain in a position between the detection zone of the SL-V and the hazardous zone or hazard. In case where you install the SL-V units in series (series connection), you always must check the installation carefully whether you follow this warning, especially after installation and maintenance.

Even if you forget to install the SL-V unit to be connected in series, or if the series connection cable is disconnected, the SL-V does not detect such a missing or disconnection. (It means the SL-V starts the normal operation.) This causes a dangerous situation because there is no protection at the area to be protected.

•You must always perform the pre-check tests after installing the SL-V in accordance with the pre-check test procedures, such as items specified in this instruction manual, in order to verify that the test pieces can be detected in all of the detection zones.

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

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

•Muting devices, the installation of those devices and the procedure to activate the muting function must fulfill the conditions specified in this instruction manual and the requirements of the laws, rules, regulations and standards in the country or region in which the SL-V 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 SL-V.

•The muting device must be installed such that only responsible personnel have access to that device to change its 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 installation of muting lamp may be required by the laws, rules, regulations, and standards in the country or region in which the SL-V 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 the muting lamp, you must fulfill the requirements because you are fully responsible for installation of muting lamp.

•When the reduced resolution function is applied, the detection capability varies according to your configuration. Make sure to accurately calculate the safety distance according to the detection capability, and install the SL-V 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 a safeguarding, may be required if the detection capability varies due to the configuration of the reduced resolution function. On your own responsibility, you must perform the risk assessment based on your configuration of the reduced resolution function in order to reduce the risk.

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

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

1

SL-V-IM-E

Danger • 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 SL-V 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 device. 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.

•The installation of the indication for override may be required by the laws, rules, regulations, and standards in the country or region in which the SL-V 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 the 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 or NO liability for any damage or any injury due to the unauthorized installation, usage or maintenance, which are not specified in this instruction manual, and/or due to noncompliance with the laws, rules, regulations and standards in the country or region in which the SL-V is used.

•Securely tighten mounting brackets and cable connectors used for the installation of the SL-V in accordance with the torque values specified in this instruction manual.

Circuit design and wiring

Danger • Always turn off the power to the SL-V when performing electrical wiring.

•You must fulfill the electrical standards and regulations in the country or region in which the SL-V is being used when you perform the electrical wiring.

•To avoid the risk of electric shock, do not connect any of the SL-V inputs to DC power sources outside of the range of 24 V DC + 10% or to any AC power source.

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

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

(a)A rated output voltage of 24 V DC (SELV, Overvoltage Category II) within +10% and -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 SL-V 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 SL-V is used in the United States or Canada.

•Do not install the electric wiring of the SL-V together with or in parallel with high-voltage electrical or power lines.

•Both OSSD outputs provided on the SL-V 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.

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

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

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

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

•In case of wiring, regardless of PNP or NPN output type cables, you must fulfill the requirements of Clause 9.4.3 in IEC60204-1: 2005 in order for the protection against maloperation due to earth fault.

•The Alert output, AUX output, Clear/Blocked Output, state information output and inter- lock-reset-ready output are not allowed to be used as safety outputs for safety-related machine control systems. Usage of these functions as safety outputs may result in a 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 a significant harm to the machine operators, including serious injury or death.

•The transmitter and receiver cables must be within the lengths specified in this instruction 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 pre-check test procedures, after maintenance, adjustment or alignment of the target machine or the SL-V and before the machine startup.

•If the SL-V does not operate properly when you perform pre-check test in accordance with the precheck test procedures specified in this instruction 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 SL-V.

•The responsible personnel must perform maintenance procedures as specified in this instruction manual to ensure safety to the machine and SL-V.

Standards and regulations

1The SL-V is a "Safety Part" specified in the EU Machinery Directive (2006/42/EC) Annex V.

The SL-V complies with the following EU Directives and EN Standards and has been certified by TÜV SÜD Product Service GmbH.

EU Directives

•Machinery Directive (2006/42/EC)

•EMC Directive (2004/108/EC)

EN Standards
• EN61496-1	Type 4 ESPE
• EN61496-2	Type 4 AOPD
• EN55011	ClassA
• EN50178
• EN61508, Part 1 to 4	SIL3
• EN62061	SIL3
• EN ISO13849-1	Category 4, PLe

2The SL-V complies with the following UL (Underwriters Laboratories Inc.) and IEC standards and has been certified by UL. (CCN :NIPF/NIPF7)

•	UL61496-1	Type 4 ESPE
•	UL61496-2	Type 4 AOPD

•UL508

•UL1998

The SL-V also complies with the following regulations.

•	FCC Part 15B	Class A Digital Device
•	ICES-003	Class A Digital Apparatus

3The SL-V has not obtained the model certification examination in accordance with Article 44-2 of the Japanese Industrial Safety and Health Law. Therefore, the SL-V cannot be used in Japan as a

"Safety Devices for Presses and Shearing Machines" as established in Article 42 of that law.

4The SL-V 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.

Corresponding standards

•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.

Checking the Package Contents

SL-V transmitter	x1	Test piece x1
SL-V receiver	x1	(Test piece with diameter of 25 mm and length of 200 mm for SL-VH and VHM
		and test piece with diameter of 14 mm and length of 200 mm for SL-VF and VFM)
Instruction Manual (this document) x1		* The test piece (diameter: 45 mm) for the SL-VL and VLM
		is not supplied. Please prepare by yourself.
Ferrite core x1		Ferrite core x2
(SL-VF, VH, VL and VLM only)		(SL-VFM only)

Cables

NOTE	•	There are two types of cable: simple function type and multi-function type. The type of cable used determines
		the function that can be used. (The number of conductors is different from each other.) Therefore, the two types
		of cables cannot be mixed at the same time. Make sure to use the appropriate type of cable for your application.

•Cables with different output types cannot be combined. Be sure to match the PNP or NPN output type especially when using the unit connection cable (for extension).

Unit connection cable

Shape

Type

Model

Output type

Length

(Transmitter/receiver set)

SL-VP7P

PNP

7 m

φ 5.8

Simple

SL-VP15P

15 m

36.1

function

SL-VP7N

7 m

NPN

SL-VP15N

15 m

14.3

SL-VP7PM

PNP

7 m

8-wire shielded cable

Multi-

SL-VP15PM

15 m

Brown and blue: AWG24 (nominal cross-sectional area of 0.22 mm2)

function

SL-VP7NM

7 m

Others: AWG26 (nominal cross-sectional area of 0.14 mm2)

NPN

SL-VP15NM

15 m

 Unit connection cable (for extension use)

Used together with the junction cable or extension cable.

Shape

Type

Model

Output type

Length

SL-VPC03P

0.3 m

Simple

SL-VPC5P

PNP

5 m

(Transmitter/receiver set)

SL-VPC10P

10 m

function

φ 5.8

SL-VPC03N

NPN

0.3 m

45

SL-VPC5N

5 m

φ 17

SL-VPC03PM

0.3 m

M14 connector, male*

Multi-

SL-VPC5PM

PNP

5 m

SL-VPC10PM

10 m

function

* The simple function type has the M12 male connector.

SL-VPC03NM

NPN

0.3 m

SL-VPC5NM

5 m

 Junction cable

Shape

Type

Model

Output type Length

			(Transmitter/receiver set)	Simple	SL-VCC10P	PNP	10 m
	44	φ 5.8	45
				function
					SL-VCC10N	NPN	10 m
	φ 17		φ 17
	M14 connector, female*1		M14 connector, male*2	Multi-	SL-VCC10PM	PNP	10 m
	*1 The simple function type has the M12 female connector.
				function
	*2 The simple function type has the M12 male connector.				SL-VCC10NM	NPN	10 m

 Extension cable

Shape

Type

Model

Output type

Length

SL-VC5P

PNP

5 m

φ 5.8

(Transmitter/receiver set)

Simple

SL-VC10P

10 m

44

function

SL-VC5N

NPN

5 m

φ 17

SL-VC10N

10 m

M14 connector, female*

SL-VC5PM

PNP

5 m

Brown and blue: AWG24 (nominal cross-sectional area of 0.22 mm2)

Multi-

SL-VC10PM

10 m

Others: AWG26 (nominal cross-sectional area of 0.14 mm2)

function

SL-VC5NM

NPN

5 m

* The simple function type has the M12 female connector.

SL-VC10NM

10 m

Series connection cable

Shape

Model

Length

(Transmitter/receiver set)

SL-VS0

0.08 m

SL-VS01

0.15 m

φ 5.8

SL-VS05

0.5 m

SL-VS1

1 m

SL-VS3

3 m

SL-VS10

10 m

SL-V-IM-E

2

Cable specification

(1)Cable length

When using the unit connection cable, junction cable, and extension cable together, the sum of the length for all type of cables must be 30 m or less. This limitation is applicable to each the transmitter and receiver respectively. Since up to 3 SL-V units can be connected in series, up to 2 sets of series connection cables are required. Two sets of the SL-VS10 (cable length: 10 m) cables can be used. In this case, the sum of the length of all type of cables, including the series connection cable, must be 50 m or less. This limitation is also applicable to each transmitter and receiver respectively.

Danger • Cables must be within the lengths specified. Failure to follow this specification may cause improper operation of safety function, and may cause dangerous situation.

•The series connection cable cannot be cut or extended. If the cable is cut or extended, safety features may not operate properly. Do not allow this to happen as it is extremely dangerous.

(2)Minimum cable bending radius : 5 mm

(3)Identification of connector cables

Cables can be identified by the colors of their connectors and their cable insulation.

2. Connector

1.Cable insulation

1.Cable Insulation colors

Cables for Transmitter	: Cable insulation in grey
Cables for Receiver	: Cable insulation in black
2. Connector colors
PNP output type cables	: Black connectors
NPN output type cables	: Grey connectors
Series connection cables	: Black connectors

NOTE	Be sure to connect the unit connection cable for receiver to the SL-V receiver and the unit connection

cable for transmitter to the SL-V transmitter.

Connector pin assignment

 Simple function type

			Transmitter
	Pin No.	Wire color	Assigned function
	1	Pink	Interlock mode selection input
	2	Brown	+24 V
	3	Violet	Wait input
	4	Green	Interlock-reset-ready output
	5	Orange	Communication cable 1 (RS485_+)
	6	Orange/	Communication cable 2 (RS485_-)
		Black
	7	Blue	0 V
	8	Red	AUX (auxiliary) output

			Receiver
	Pin No.	Wire color	Assigned function
	1	White	OSSD 2
	2	Brown	+24 V
	3	Black	OSSD 1
	4	Yellow	RESET input
	5	Orange	Communication cable 1 (RS485_+)
	6	Orange/	Communication cable 2 (RS485_-)
		Black
	7	Blue	0 V
	8	Red	EDM input

 Multi-function type

			Transmitter
	Pin No.	Wire color	Assigned function
	1	Pink	Interlock mode selection input
	2	Brown	+24 V
	3	Violet	Wait input
	4	Green	Interlock-reset-ready output
	5	Orange	Communication cable 1 (RS485_+)
	6	Orange/	Communication cable 2 (RS485_-)
		Black
	7	Blue	0 V
	8	Red	AUX (auxiliary) output
	9	Grey	State information output 1
	10	Grey/Black	State information output 2
	11	Pink/Black	Alert output
	12	White/	Clear/Blocked Output
		Black

			Receiver
	Pin No.	Wire color	Assigned function
	1	White	OSSD 2
	2	Brown	+24 V
	3	Black	OSSD 1
	4	Yellow	RESET input
	5	Orange	Communication cable 1 (RS485_+)
	6	Orange/	Communication cable 2 (RS485_-)
		Black
	7	Blue	0 V
	8	Red	EDM input
	9	Red/Black	Override input
	10	Yellow/	Muting lamp output
		Black
	11	Light blue	Muting input 1
	12	Light blue/	Muting input 2
		Black

When the muting bank function is used, the pin assignment changes as follows.

Pink: muting bank input 3, purple: muting bank input 1, red/black: muting bank input 2

Reference	M12 connector male pin assignment			M14 connector male pin assignment
	2		1		2		1
				3	10			9
	3	8	7
				4	11	12		8
	4		6
		5			5	6	7

Cable connection

1 The unit connection cable for transmitter (cable insulation is grey) must be connected to the transmitter as shown below. Similarly, the unit connection cable for receiver (cable insulation is black) must be connected to the receiver as shown below.

Recommended tightening torque	: 0.3 N·m
Minimum cable bending radius	: 5 mm
For SL-VF, VH, and VL
Transmitter	Receiver

M2.6	grey	Push the cable	black	M2.6	Push the cable
screw				screw	into the groove.
		into the groove.

For SL-VFM, VHM, and VLM
Transmitter		Receiver
Detection	Detection		Detection	Detection
surface			surface
	surface			surface
M2.6	grey	black	M2.6	Push the cable
screw	Push the cable		screw
	into the groove.			into the groove.

Caution • Do not remove the grey gasket installed on the connector. This gasket is necessary to fulfill the requirement of IP65 or IP67.

•Connect the unit connection cable to the connector receptacle on the lower part of the SL- V. Removing the connector cover on the upper part of the SL-V and connecting the unit connection cable may result in an SL-V failure.

2 For the SL-VHM, ferrite core is not required. However, for the SL-VF, SL-VH, SL-VL, or SL-VLM, one ferrite core must be put on the SL-V unit connection cable for the transmitter. On the other hand, for the SL-VFM, two ferrite core must be put on the SL-V unit connection cable for the receiver.

For SL-VF, SL-VH, SL-VL, SL-VLM (Ferrite core x 1)

For SL-VFM (Ferrite core x 2)

Attach to the transmitter

Attach to the receiver

Transmitter

Receiver

Ferrite core

Ferrite core

(diameter: 18.5 mm, length: 34 mm)

(diameter: 18.5 mm, length: 34 mm)

Unit connection cable

Unit connection cable

Within 200 mm

Within 250 mm

Part Description

SL-V main unit

Beam center-line mark (upper)

Top*1

Detection surface

Transmitter

Receiver

		Connector cover
	LEVEL		LEVEL
	5	Installation reference mark	5
	4		4
	3		3
	2		2
	1	Indicators	1
V08H-SL	WAIT		MUTE1	V08H-SL
	FUNCTION		MUTE2
.(0 ø25	OSSD		OSSD	.(0 ø25
	INTER	Installation reference mark	INTER
	LOCK		LOCK
98")				98")

Connector receptacle

Bottom

		The connector and connector cover for
		the SL-VFM, VHM, and VLM are located
		on the back side.
		Transmitter	Receiver
		Connector cover
	Detection	Detection	Detection
	surface
		surface	surface
		Connector
		receptacle

Beam center-line mark (lower)

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

Beam center-line	: An optical path joining the optical center of the emitting element on the transmit-
	ter to the optical center of the corresponding receiving element on the receiver.
	the SL-V 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.
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
	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 detection capability that exists at point A to the bottom edge

of the specified detection capability that exists at point B is called a "protection height". The following calculation formula can be defined:

Protection height = "Detection height" + 2 x "the specified detection capability"–"beam axis diameter".

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

Specified detection capability (position A)

Beam center-line mark

Beam center-line

b

a

Detection	Protection height
height

c

a: Beam axis spacing

b: Beam axis diameter

Specified detection capability (position B)

c: Detection capability

3

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