Panasonic SF4B-H28(V2), SF4B-H36(V2) User guide

SAFETY LIGHT CURTAIN

SF4B Version 2

Instruction Manual

BEFORE BEGINNING

The printed English and Japanese versions of this instruction manual are the original versions. The English, French, German, Italian and Spanish versions published in the Internet are

copies of the original documentation and were produced by Panasonic Electric Works Europe AG.

Liability and Copyright for the Hardware

This manual and everything described in it are copyrighted. You may not copy this manual, in whole or part, without written consent of Panasonic Electric Works Europe AG (PEWEU).

PEWEU pursues a policy of continuous improvement of the design and performance of its products. Therefore we reserve the right to change the manual/product without notice. In no event will PEWEU be liable for direct, special, incidental, or consequential damage resulting from any defect in the product or its documentation, even if advised of the possibility of such damages.

We invite your comments on this manual. Please e-mail us at: tech-doc@eu.pewg.panasonic.com. Please direct support matters and technical questions to your local Panasonic representative.

LIMITED WARRANTY

If physical defects caused by distribution are found, PEWEU will replace/repair the product free of charge. Exceptions include:

• When physical defects are due to different usage/treatment of the product other than described in the manual.

• When physical defects are due to defective equipment other than the distributed product.

• When physical defects are due to modifications/repairs by someone other than PEWEU.

• When physical defects are due to natural disasters.

Important Symbols

One or more of the following symbols may be used in this documentation:

DANGER!





CAUTION

Indicates that you should proceed with caution. Failure to do so may result in injury or significant damage to instruments or their contents, e.g. data.

NOTE

Contains important additional information.

EXAMPLE

Contains an illustrative example of the previous text section.

Procedure

The warning triangle indicates especially important safety instructions. If they are not adhered to, the results could be fatal or critical injury.

Indicates that a step-by-step procedure follows.

REFERENCE

Indicates where you can find additional information on the subject at hand.

KEY POINTS

Summarizes key points in a concise manner.

SHORTCUTS

Provides helpful keyboard shortcuts.

EXPLANATION

Provides a brief explanation of a function, e.g. why or when you should use it.

Indicates that the text will be continued on the next page.

Safety Light Curtain SF4B

Table of Contents

1. Introduction.............................................................................1

1.1 Target Group..............................................................................................2

1.2 Safety Instructions .....................................................................................3

1.3 Applicable Standards/Regulations............................................................. 6

2. Before Using the Device ........................................................7

2.1 Features..................................................................................................... 8

2.2 Confirmation of Packed Contents ..............................................................9

2.3 Part Description ....................................................................................... 10

2.3.1 How the Display Works ............................................................................11

2.4 Protection Area ........................................................................................15

2.4.1 Sensing Area............................................................................................15

2.4.2 Safety Distance ........................................................................................16

2.4.2.1 Calculation Example for Europe......................................................19

2.4.2.2 Calculation Example for the US ......................................................22

2.4.3 Influence of Reflective Surfaces...............................................................24

2.4.4 Placement of Emitter and Receiver..........................................................25

2.5 Mounting ..................................................................................................27

2.5.1 Mounting of the Mounting Bracket............................................................27

2.5.1.1 Standard Mounting Bracket MS-SFB-1...........................................28

2.5.1.2 Intermediate Supporting Bracket MS-SFB-2...................................30

2.5.1.3 Dead Zoneless Mounting Bracket MS-SFB-3 .................................32

2.5.1.4 Protect-Bar Mounting Bracket MC-SFBH-□-T.................................33

2.5.2 Mounting of the Bottom Cap Cable ..........................................................34

Table of Contents

2.5.3 Mounting and Dismantling of a Series Connection ..................................36

Safety Light Curtain SF4B

2.6 Wiring ...................................................................................................... 39

2.6.1 PNP Output ..............................................................................................40

2.6.2 NPN Output ..............................................................................................42

2.6.3 Power Supply Unit....................................................................................43

2.6.4 Output Signal during Self-Diagnosis ........................................................44

2.6.5 Connecting Procedure and Connector Pin Assignment...........................44

2.6.6 Basic Wiring..............................................................................................46

2.6.7 Wiring Examples.......................................................................................48

2.6.7.1 Manual Reset When Interlock is Activated (Control Category 4)....48

2.6.7.2 Series Connection (Control Category 4) .........................................51

2.6.7.3 Parallel Connection (Control Category 4) .......................................54

2.6.7.4 Mixed Connection (Control Category 4)..........................................58

2.6.7.5 Auto-Reset (Control Category 4).....................................................62

2.6.7.6 External Device Monitor Function Deactivated (Control Category 4) 64

2.6.7.7 Muting Function (Control Category 4) .............................................66

2.7 Adjustment............................................................................................... 69

2.7.1 Beam-Axis Alignment ...............................................................................69

2.7.2 Operation Test..........................................................................................71

3. Functions .............................................................................. 73

3.1 Self-Diagnosis Function........................................................................... 74

3.2 Interlock Function .................................................................................... 75

3.3 Emission Halt Function............................................................................ 76

3.4 Interference Prevention Function ............................................................ 77

3.5 Auxiliary Output (Non-Safety Output) ...................................................... 78

3.6 External Device Monitor Function............................................................ 79

3.7 Muting Function ....................................................................................... 81

3.7.1 Specification for the Muting Sensor..........................................................82

Safety Light Curtain SF4B

3.7.2 Installation of the Muting Sensor..............................................................83

Table of Contents

3.8 Override Function ....................................................................................85

3.9 Functions of the Optional Handy Controller SFB-HC...............................88

4. Operation...............................................................................91

4.1 Normal Operation..................................................................................... 92

4.2 Using the Emission Halt Function ............................................................99

4.3 When an Error Occurs ...........................................................................102

5. Maintenance........................................................................105

5.1 Daily Inspection Checklist ......................................................................106

5.2 Periodic Inspection Checklist (Every Six Months)..................................108

5.3 Inspection after Maintenance................................................................. 109

6. Troubleshooting .................................................................111

6.1 Emitter-Related Problems...................................................................... 112

6.1.1 All Indicators Are OFF ............................................................................112

6.1.2 Fault Indicator (Yellow) Lights up or Blinks ............................................112

6.1.3 Setting Indicator Lights Up // Emitter......................................................113

6.1.4 Emission Halt Indicator (Orange) Lights Up...........................................113

6.1.5 All Beam-axis Adjustment Indicators (Red) Light Up .............................114

6.1.6 Operation Indicator Remains Lit in Red .................................................114

6.2 Receiver-Related Problems ................................................................... 115

6.2.1 All Indicators Are OFF ............................................................................115

6.2.2 Fault Indicator (Yellow) Lights up or Blinks ............................................115

6.2.3 Digital Error Indicator "C" Lights Up .......................................................117

6.2.4 All Beam-axis Adjustment Indicators (Red) Light Up .............................117

vii

Table of Contents

6.2.5 Operation Indicator Remains Lit in Red .................................................117

Safety Light Curtain SF4B

7. Specifications..................................................................... 119

7.1 Specifications by Model Numbers ......................................................... 120

7.1.1 Model Numbers SF4B-Fxx<V2> with 10mm Beam Pitch ......................120

7.1.2 Model Numbers SF4B-Hxx<V2> with 20mm Beam Pitch......................121

7.1.3 Model Numbers SF4B-Axx<V2> with 40mm Beam Pitch ......................122

7.2 Common Specifications......................................................................... 124

7.3 Options .................................................................................................. 127

7.3.1 Front Protection Cover ...........................................................................127

7.3.2 Cables.....................................................................................................128

7.3.2.1 Bottom Cap Cables .......................................................................128

7.3.2.2 Extension Cable with Connector on One End...............................129

7.3.2.3 Extension Cable with Connectors on Both Ends...........................129

7.3.2.4 Cable for Series Connection .........................................................130

7.3.2.5 Cable for Application Expansion Unit SF-C14EX..........................130

7.3.2.6 Cables for PNP/NPN Output .........................................................130

7.3.3 Brackets..................................................................................................130

7.3.3.1 Standard Mounting Bracket (M5) ..................................................131

7.3.3.2 360° Rotatable Mounting Bracket (M8).........................................131

7.3.3.3 M8 Rear Mounting Bracket............................................................131

7.3.3.4 M8 Side Mounting Bracket ............................................................131

7.3.3.5 M8 Rear / Side Mounting Bracket Set...........................................132

7.3.3.6 M5 Pitch Adapter Bracket..............................................................132

7.3.3.7 M8 Pitch Adapter Bracket..............................................................133

7.3.3.8 Dead Zoneless Mounting Bracket .................................................133

7.3.4 Handy Controller.....................................................................................134

7.3.5 Laser Alignment Tool for Light Curtain...................................................134

7.3.6 Control Units...........................................................................................135

7.3.6.1 Unit with Connectors .....................................................................135

viii

7.3.6.2 Unit for Demanding Industrial Environments.................................135

7.3.6.3 Miniature Unit ................................................................................136

Safety Light Curtain SF4B

7.3.6.4 Application Expansion Unit............................................................136

7.3.7 Protect Bar..............................................................................................137

7.3.8 Test Rod .................................................................................................138

Table of Contents

8. Dimensions .........................................................................139

8.1 Mounting Dimensions ............................................................................140

8.1.1 Mounting with Rear Mounting Bracket (MS-SFB-7-T)............................140

8.1.2 Mounting with Side Mounting Bracket (MS-SFB-8-T) ............................142

8.1.3 Rear Mounting with Dead Zoneless Mounting Bracket (MS-SFB-3)......144

8.1.4 Side Mounting with Dead Zoneless Mounting Bracket (MS-SFB-3) ......146

8.2 Mounting Bracket Dimensions ...............................................................148

8.2.1 Standard Mounting Bracket (MS-SFB-1)................................................148

8.2.2 M8 360° Rotatable Mounting Bracket (MS-SFB-1-T).............................149

8.2.3 Rear Mounting Bracket (MS-SFB-7-T)...................................................149

8.2.4 Side Mounting Bracket (MS-SFB-8-T)....................................................150

8.2.5 M5 Pitch Adapter Bracket (MS-SFB-4) ..................................................151

8.2.6 M8 Pitch Adapter Bracket (MS-SFB-4-T)...............................................151

8.2.7 Intermediate Supporting Bracket (MS-SFB-2) .......................................152

8.2.8 Dead Zoneless Mounting Bracket (MS-SFB-3)......................................152

Chapter 1

Introduction

Safety Light Curtain SF4B

1.1 Target Group

Thank you for purchasing the Safety Light Curtain from the SF4B series (hereinafter called 'this device'). Please read this instruction manual carefully and thoroughly for the correct and optimum use of this product. Kindly keep this manual in a convenient place for quick reference.

This device is a light curtain for protecting a person from dangerous parts of a machine which can cause injury or accident.

This manual has been written for the following personnel who:

• have undergone suitable training and have knowledge of light curtains as well as safety systems and standards.

• who are responsible for the introduction of this device

• who design systems using this device

• who install and connect this device

• who manage and operate a plant using this device

Machine designer, installer, employer and operator

The machine designer, installer, employer and operator are solely responsible for ensuring that all applicable legal requirements relating to the installation and the use in any application are satisfied and all instructions for installation and maintenance contained in the instruction manual are followed.

Whether this device functions as intended and systems including this device comply with safety regulations depend on the appropriateness of the application, installation, maintenance and operation. The machine designer, installer, employer and operator are solely responsible for these items.

Engineer

The engineer must be a person who is appropriately trained, has widespread knowledge and experience, and can solve various problems which may arise in his field of work, e.g. as a machine designer or a person in charge of installation or operation, etc.

Operator

The operator should read this instruction manual thoroughly, understand its contents, and perform operations following the procedures described in this manual for the correct operation of this device.

In case this device does not perform properly, the operator should report this to the person in charge and stop machine operation immediately. The machine must not be used until correct performance of this device has been confirmed.

Safety Light Curtain SF4B

1.2 Safety Instructions

• Use this device as per its specifications. Do not modify this device since its functions and capabilities may not be maintained and it may malfunction.

• This device has been developed/produced for industrial use only.

• Do not use this device under conditions or in environments not described in

this manual. Please consult us if there is no other choice but to use this device in such an environment.

• Do not use this device in fields such as nuclear power control, railroad, aircraft, automobiles, combustion facilities, medical systems, aerospace development, etc.

• When this device is to be used for enforcing protection of a person from any danger occurring around an operating machine, the user must satisfy the regulations established by national or regional security committees.

• In case of applying this device to particular equipment, follow the safety regulations in regard to appropriate usage, mounting (installation), operation and maintenance.

• Use this device by installing suitable protection equipment as a countermeasure for failure, damage, or malfunction of this device.

1.2 Safety Instructions

• Before using this device, check whether the device performs properly and has the functions and capabilities as stated in the design specifications.

• Dispose of this device as industrial waste.

Environment

• Do not use a mobile phone or a radio phone near this device.

• If the device is installed in a place where there are reflective surfaces, make

sure to install this device so that reflected light from the reflective surfaces does not affect the receiver. Alternatively, take countermeasures such as painting, masking, roughening, or changing the material of the reflective surfaces, etc. Failure to do so may cause the sensor not to detect properly, which may result in death or serious injury.

• Do not install this device in the following environments.

- Areas exposed to intense interference light such as direct sunlight

- Areas with high humidity where condensation is likely to occur

- Areas exposed to corrosive or explosive gases

- Areas exposed to vibration or shock at levels higher than those specified

- Areas exposed to contact with water

- Areas exposed to too much steam or dust

- Areas where the beam-receiving part of this device is directly exposed to

light from a high-frequency fluorescent lamp (inverter type) or rapid-starter fluorescent lamp.

Introduction

Installation

• Always keep the correctly calculated safety distance between this device and the dangerous parts of the machine.

• Install an extra protection structure around the machine so that the operator must pass through the sensing area of this device to reach the dangerous parts of the machine.

• Install this device in a manner that some part of the operator's body always remains in the sensing area until the operator has finished working with the dangerous parts of the machine.

• Do not install this device at a location where it can be affected by wall reflection.

• When installing multiple sets of this device, connect the sets and, if necessary, install some barriers so that mutual interference does not occur.

• Do not use this device in an environment with reflective light.

• The corresponding emitter and receiver must have the same serial number

and be correctly oriented.

Equipment in which this device is installed

• When this device is used in the PSDI (see page control circuit must be configured between this device and the machinery. For details, be sure to refer to the standards or regulations applicable in each region or country.

Safety Light Curtain SF4B

154) mode, an appropriate

Wiring

• In Japan, do not use this device as safety equipment for a press machine or a shearing machine.

• Do not install this device with a machine whose operation cannot be stopped immediately in the middle of an operation cycle by an emergency stop.

• This device provides safety 2 seconds after the power has been switched ON. Make sure that the control system takes the time delay into consideration.

• Switch off the power before wiring the device.

• All electrical wiring should conform to the regional electrical regulations and

laws. The wiring should be done by engineer(s) having the required electrical knowledge.

• Do not run the sensor cable together with high-voltage lines or power lines or put them together in the same raceway.

• In case you need to extend the cable of the emitter or the receiver, you can use the dedicated extension cable. The cable can be extended up to 50m. However, if the cable is extended in an installation with multiple sensors connected in series or with the muting lamp (see page

81), the total extendable length of the cable depends on the number of the sensors connected in series (see page

44).

Safety Light Curtain SF4B

• When this device is used in Korea as a product conforming to the Korean S-mark, the power line cable connected to this device should be no longer than 10m.

• Do not control the device at only one control output (OSSD 1, OSSD 2).

• When this device is used in Korea in an installation with multiple sensors

connected in series in conformity with the Korean S-mark, make sure to ground the device on the 0V side (PNP output).

Maintenance

• When you need to replace parts, always use only genuine replacement parts from the supplier. If you use substitute parts from another manufacturer, the sensor may fail to detect properly, which may result in death or serious body injury.

• The device must be inspected periodically by an engineer with the required knowledge.

• When you have adjusted or maintained the device, test the device following the procedure specified in the maintenance (see page you switch the system back on.

• Clean this device with a clean cloth. Do not use thinner-based cleaners.

1.2 Safety Instructions

109) chapter before

Others

• Never modify this device. When you modify the device, the sensor may fail to detect properly, which may result in death or serious body injury.

• Do not use this device to detect objects flying over the sensing area.

• Do not use this device to detect transparent objects, translucent objects or

objects smaller than the specified minimum sensing size.

Introduction

Safety Light Curtain SF4B

1.3 Applicable Standards/Regulations

This device complies with the following standards/regulations.

• EU Machinery Directive 2006/42/EC (valid from December 29, 2009)

• EU Machinery Directive 98/37/EC (valid until December 28, 2009), EMC Directive

89/336/EEC

• EN 61496-1 (Type 4), EN 55011, EN 954-1 (Category 4)

• IEC 61496-1/2 (Type 4), ISO 13849-1: 2006 (Category 4, PLe), IEC 61508-1~7 (SIL3)

• JIS B 9704-1/2 (Type 4), JIS B 9705-1 (ISO 13849-1) (Category 4)

• UL 61496-1/2 (Type 4), UL 1998, UL 508, CSA C22.2 No.14, CSA C22.2 No.0.8

• OSHA 1910.212, OSHA 1910.217(C), ANSI B11.1 to B11.19, ANSI/RIA 15.06

• GB 4584

• The S-mark certificate has been certified by Korea Occupational Safety & Health

Agency (KOSHA).



NOTE

• The conformity to JIS, OSHA and ANSI for this device has been evaluated by ourselves.

• Canadian and U.S. requirements.

•

directive. The CE mark on the safety light curtain indicates that this product conforms to the EMC directive.

•

the S-mark certificate.

• If you want to use this device in a location other than the locations described above, confirm first that the intended use complies with the standards or regulations applicable in your region or country.

: The C-CL US Listing Mark indicates compliance with both

: This device conforms to the EMC directive and the Machinery

: The S-mark on the safety light curtain indicates that this device has

Chapter 2

Before Using the Device

Safety Light Curtain SF4B

2.1 Features

This device is a light curtain with the following features.

• No special controller is required.

• Control output (OSSD 1, OSSD 2) is available with PNP or NPN output.

• Includes beam-axis alignment indicators which make beam-axis alignment easy.

• Function setting possible with handy controller SFB-HC (optional) (see page

• Many accessories (see page

127).

88).

Safety Light Curtain SF4B

2.2 Confirmation of Packed Contents

Check mark Number Package content

□ each 1 piece

□ 1 piece

□ 0 to 3 sets

□ 1 piece

1 set

2 sets

3 sets

Sensor: EMITTER, RECEIVER

Test Rod For SF4B-F□<V2>: SF4B-TR14 (ø 14 x 220mm) For SF4B-H□<V2>: SF4B-TR25 (ø 25 x 220mm) Intermediate Supporting Bracket (MS-SFB-2) Note: The intermediate support bracket (MS-SF4B-2) is enclosed

with the following devices. The quantity differs depending on the device as shown below:

SF4B-F□<V2>: 79 to 111 beam channels SF4B-H□<V2>: 40 to 56 beam channels SF4B-A□<V2>: 20 to 28 beam channels SF4B-F127<V2>, SF4BH□<V2>: 64 to 80 beam channels SF4B-A□<V2>: 32 to 40 beam channels SF4B-H□<V2>: 88 to 96 beam channels SF4B-A□<V2>: 44 to 48 beam channels Instruction Manual (this manual)

Before Using the Device

2.3 Part Description

Safety Light Curtain SF4B

Emitter

Receiver

Beam channel

Display section

Bottom cap cable (Optional)

M8 rear mounting bracket (Optional)

Standard mounting bracket (Optional)

Pitch adapter bracket (Optional)

M8 side mounting brack (Optional)

M8 360° rotatable mounting

et (Optional)

brack

M8 Pitch adapter bracket (Optional)

Parts of the safety light curtain

Part Description

Emitter

Receiver

Beam channel

Standard mounting bracket (optional)

Emits light to the receiver facing it. Furthermore, the status of the emitter is indicated on its display section.

Receives light from the emitter facing it. Simultaneously the control output (OSSD 1, OSSD

2) turns ON when the all beam channels receive light from the emitter, and the control output (OSSD 1, OSSD 2) turns OFF when one or more beam channels are blocked. The receiver displays its status on the display section.

The light-emitting elements of the emitter and the light-receiving elements of the receiver are placed at the following intervals: 10mm (SF4B-F), 20mm (SF4B-H), and 40mm (SF4B-A).

Use this bracket to mount the emitter/receiver. The standard mounting bracket allows you to adjust the horizontal mounting angle to any angle.

Dead zoneless mounting bracket (Optional)

Intermediate supporting bracket (Accessory)

Safety Light Curtain SF4B

Part Description

2.3 Part Description

M8 rear mounting bracket (optional)

M8 side mounting bracket (optional)

M8 360° rotatable mounting bracket (optional)

Pitch adapter bracket (optional)

M8 pitch adapter bracket (optional)

Dead zoneless mounting bracket (optional)

Intermediate supporting bracket (Accessory)



NOTE

• In case of using the muting function, the following items are required: 12-core bottom cap cable (SFB-CB05-MU, SFB-CCB-MU) (optional), muting sensor and muting lamp. Please purchase these items separately.

This allows the light curtain to be mounted at the rear with one M8 hexagon-socket-head bolt. The horizontal angle can be adjusted.

This allows the light curtain to be mounted at the side with one M8 hexagon-socket-head bolt. The horizontal angle can be adjusted.

This allows the light curtain to be mounted at the rear with one M8 hexagon-socket-head bolt. The horizontal angle can be adjusted to any angle.

This bracket is used when you change from a previous light curtain with a sensing height of 200 to 750mm to this device. The bracket is installed using two M5 hexagon-socket-head bolts. The horizontal angle can be adjusted.

This bracket is used when you change from a previous light curtain with a sensing height of 200 to 750mm to this device. The bracket is installed using two M8 hexagon-socket-head bolts. The horizontal angle can be adjusted.

This bracket is used for mounting both the emitter and the receiver. This bracket is useful for mounting the sensor when mounting space is limited.

Use this bracket in the following situations: Mounting SF4B-F with more than 79 beam channels, SF4B-H with more than 40 beam channels or for SF4B-A with more than 20 beam channels.

• The blanking function is set with the handy controller SFB-HC (optional). Please purchase the handy controller separately.

2.3.1 How the Display Works

The description given in [ ] is marked on the sensor.

Emitter

Function Description

Beam-axis alignment indicator (red/green) [RECEPTION]

When the top block receives light: lights up red When the top end receives light: blinks red When the control output (OSSD 1, OSSD 2) is

ON: lights up green When the upper middle block receives light:

lights up red When the control output (OSSD 1, OSSD 2) is

ON: lights up green When the lower middle block receives light:

lights up red When the control output (OSSD 1, OSSD 2) is

ON: lights up green

Before Using the Device

Safety Light Curtain SF4B

Emitter

Function Description

When the bottom block receives light: lights up red

When the bottom end receives light: blinks red When the control output (OSSD 1, OSSD 2) is

ON: lights up green

Top end

Bottom end

Operation indicator [OSSD] (red/green),

note 1

Incident beam intensity indicator [STB] (orange/green), notes 2 and 3

Fault indicator [FAULT] (yellow)

Digital error indicator (red)

PNP indicator [PNP] (orange)

NPN indicator [NPN] (orange)

Emission intensity control indicator [CTRL] (orange)

Emission halt indicator [Halt] (orange)

Lights up when the sensor operation is as follows (OSSD 1, OSSD 2):

When the control output (OSSD 1, OSSD 2) is OFF: lights up red

When the control output (OSSD 1, OSSD 2) is ON: lights up green

When sufficient light is received (incident beam: 130% or more): lights up green

When stable light is received (incident beam: 115 to 130%): OFF

When unstable light is received (incident beam: 100 to 115%): lights up orange

When light is blocked: OFF When a fault occurs in the sensor: lights up or

blinks

When the safety light curtain is in the lockout state, the error contents are displayed here.

When the PNP output is set: lights up

When the NPN output is set: lights up

When light is emitted in short mode: lights up When light is emitted in normal mode: OFF

When light emission is halted: lights up When light is emitted: OFF

Safety Light Curtain SF4B

Top end

Bottom end



NOTE

1. Since the color of the operation indicator changes according to whether the

control output (OSSD 1, OSSD 2) is ON or OFF, the operation indicator on the sensor is marked "OSSD".

2. The threshold where the control output (OSSD 1, OSSD 2) changes from OFF

to ON is applied as "100% incident light intensity".

3. The status "when light is blocked" refers to the status when there is an

obstacle in the sensing area.

The description given in [ ] is marked on the sensor.

Receiver

Function Description

Beam-axis alignment indicator (red/green) [RECEPTION]

When the top block receives light: lights up red When the top end receives light: blinks red When the control output (OSSD 1, OSSD 2) is

ON: lights up green

When the upper middle block receives light: lights up red

When the control output (OSSD 1, OSSD 2) is ON: lights up green

2.3 Part Description

When the lower middle block receives light: lights up red

When the control output (OSSD 1, OSSD 2) is ON: lights up green

When the bottom block receives light: lights up red When the bottom end receives light: blinks red When the control output (OSSD 1, OSSD 2) is

ON: lights up green

OSSD indicator [OSSD] (red/green),

note 1

Incident beam intensity indicator [STB] (orange/green), notes 2 and 3

When the control output (OSSD 1, OSSD 2) is OFF: lights up red

When the control output (OSSD 1, OSSD 2) is ON: lights up green

When sufficient light is received (incident beam: 130% or more): lights up green

When stable light is received (incident beam: 115 to 130%): OFF

When unstable light is received (incident beam: 100 to 115%): lights up orange

When light is blocked: OFF

Before Using the Device

Function Description

Fault indicator [FAULT] (yellow)

When a fault occurs in the sensor: lights up or blinks

Receiver

Safety Light Curtain SF4B

Digital error indicator (red)

PNP indicator [PNP] (orange)

NPN indicator [NPN] (orange)

Function setting indicator [FUNCTION],

note 4 Interlock

indicator [INTERLOCK]



1. Since the color of the operation indicator changes according to whether the

When device goes into lockout condition, error contents are displayed here.

When the PNP output is set: lights up

When the NPN output is set: lights up

When blanking function is used: lights up When connecting the handy controller: blinks

When the safety light curtain is interlocked: lights up

In all other cases: OFF

NOTE

control output (OSSD 1, OSSD 2) is ON or OFF, the operation indicator on the sensor is marked "OSSD".

2. The threshold where the control output (OSSD 1, OSSD 2) changes from OFF to ON is applied as "100% incident beam intensity".

3. The status "when the light is blocked" means there is an obstacle in the sensing area

4. The blanking function is set by using the handy controller SFB-HC (optional). Please purchase the handy controller separately.

Safety Light Curtain SF4B

2.4 Protection Area

2.4.1 Sensing Area

The sensing area is the zone formed by the sensing height of the sensor and the sensing range between the emitter and the receiver. The sensing height is determined by the number of beam channels. The sensing range depends on the device type: 0.3 to 9m for SF4B-H (12 to 64 beam channels) and SF4B-A (6 to 32 beam channels), 0.3 to 7m for SF4B-F and SF4B-H (72 to 96 beam channels) as well as SF4B-A (36 to 48 beam channels). Remember that the sensing range becomes shorter when you mount a protection cover (FC-SFBH-) (optional). Also remember that if the sensing range is less than 0.3m, malfunction may occur due to the optical structure.

Sensing height, sensing range, and sensing area

To p

Sensing

height

The sensing height is the area between the line indicated in the top part and line indicated in the bottom part.

Sensing

height

Emitter

Sensing area

Receiver

Bottom

Sensing range

DANGER!

Install a protective structure around the machine so that the operator must pass through the sensing area of this device to reach the dangerous parts of the machine. Furthermore, ensure that some part of the operator's body always remains in the sensing area while the operator works on the dangerous parts of the machine.

When connecting the sensor, use the correct combination of emitter and receiver (same beam pitch and number of beam channels) and match their top-bottom orientation. Combining different types of emitters and receivers may produce a non-sensing area.

Do not use any arrangement using reflection or recursive reflection.

Follow the below descriptions carefully. Failure to do so may result in serious injury or death.

Before Using the Device

Safety Light Curtain SF4B

Do not arrange several receivers facing one emitter, or vice versa, as this could produce a non-sensing area or cause mutual interference.



EXAMPLE

Correct installation

Dangerous

part

Sensing area

Incorrect installation

Dangerous

part

2.4.2 Safety Distance

Dangerous

Sensing area

Protective structure

part

Sensing area

Dangerous

Sensing area

part

DANGER!

The safety distance is the minimum distance that must be maintained between the light curtain and the dangerous parts of the machine so that the machine can be stopped before a human body or an object can reach the dangerous parts.

The safety distance is calculated based on the equation described on the next page when a person moves (normal intrusion) at a straight angle into the sensing area of the sensor.

Calculate the safety distance correctly and always maintain a distance equal to or greater than the safety distance between the sensing area of this device and the dangerous parts of the machine. If the safety distance is miscalculated or not sufficient, the machine will not stop quickly enough when a human body or an object reaches the dangerous parts, which may result in serious injury or death.

Safety Light Curtain SF4B

In case the intrusion direction is not perpendicular to the sensing area, be sure to refer to the relevant standard for details of the calculation (regional standard, specification of the machine etc.)

Safety distance S

Sensing area

Dangerous part

Intrusion direction

Safety distance

2.4 Protection Area

DANGER!

Before designing the system, refer to the relevant standards of the region where this device is to be used and then install this device. Furthermore, the equation described on the next pages is to be used only when the intrusion direction is perpendicular to the sensing area, i.e. at a straight angle. If the intrusion direction is not perpendicular to the sensing area, refer to the relevant standard (regional standard, specification of the machine, etc.) for details of the calculation.

The max. response time of the machine is from the point when the machine receives the halt signal from this device to the point when the dangerous part of the machine stops. The max. response time of the machine should be timed with the actual machine.

Before Using the Device

Safety Light Curtain SF4B

The minimum size of the objects to be detected by the safety light curtain varies depending on whether the floating blanking function (see page

88) is used or not. The equation differs depending on the case whether the minimum sensing object is larger than ∅40mm or not. Calculate the safety distance with the correct minimum size and the appropriate equation.

SF4B-F

(10mm beam channel pitch type)

SF4B-H

(20mm beam channel pitch type)

SF4B-A

(40mm beam channel pitch type)



NOTE

Minimum size of the object Floating

blanking not active

∅14mm ∅24mm ∅34mm ∅44mm

∅25mm ∅45mm ∅65mm ∅85mm

∅45mm ∅85mm ∅125mm ∅165mm

Floating blanking active at (Note)

1 beam channel

2 beam channels

3 beam channels

When the safety light curtain is used in the PSDI mode, an appropriate safety distance S must be calculated. For details, refer to the standards or regulations applicable in your region or country.

Safety Light Curtain SF4B

2.4 Protection Area

2.4.2.1 Calculation Example for Europe

The equation for the safety distance S is calculated in accordance with EN 999 and ISO 13855.

Formula in case that the minimum sensing object is Ø40mm or less:

S: Safety distance (mm)

K: Intrusion velocity of operator's body or object (mm/s). The equation assumes an

S = K x T + C

Minimum distance required between the sensing area surface and the dangerous parts of the machine.

intrusion direction perpendicular to the sensing area.

Response time of total equipment (s). T = T

Maximum halt time of device (s). For determining T

+ T

SF4B

machine documentation or take a measurement using a special device called a 'brake monitor'.

: Response time of this device (s)

SF4B

Additional distance calculated from the minimum size of the object to be detected by the sensor (mm). C has to be 0 or more. C = 8 x (d - 14)

d: Minimum object diameter (mm)

Procedure

1. Calculate the safety distance S with a velocity K = 2,000mm/s

There are 3 possibilities (1-3):

1. S < 100mm Use 100mm as the safety distance.

2.100 ≤ S ≤ 500mm

Use the calculated result as the safety distance.

3. S > 500mm Continue with the next step in the procedure

2. Recalculate S with K' = 1,600mm/s

, refer to the

There are 2 possibilities (4-5):

4. S > 500mm Use the calculated result as the

safety distance.

5. S ≤ 500mm

Use 500mm as the safety distance.

Before Using the Device



EXAMPLE

Calculate the safety distance with the following values:

K: 2,000mm/s

Safety Light Curtain SF4B

SF4B

d: 14mm

With these values, the calculation is as follows:

S = K x T + C

As 228 matches possibility 2 listed above, 228mm is the safety distance.



EXAMPLE

Calculate the safety distance with the following values:

K: 2,000mm/s

SF4B

d: 14mm

0.1s

14ms

= K x (T = 2,000 x (0.1 + 0.014) + 8 x (14 - 14) = 228

0.4s

14ms

+ T

) + 8 x (d - 14)

SF4B

With these values, the calculation is as follows:

S = K x T + C

As 828 matches possibility 3 listed above, recalculate the safety distance with K' = 1,600mm/s.

S = K' x T + C

= K x (T = 2,000 x (0.4 + 0.014) + 8 x (14 - 14) = 828

= K x (T = 1,600 x (0.4 + 0.014) + 8 x (14 - 14) = 662.4

+ T

) + 8 x (d - 14)

SF4B

) + 8 x (d - 14)

SF4B

Safety Light Curtain SF4B

2.4 Protection Area

As 662.4 is > 500mm, use this recalculated result as the safety distance.

Formula in case that the minimum sensing object is Ø40mm or more:

S = K x T + C

S: Safety distance (mm)

Minimum distance required between the sensing area surface and the dangerous parts of the machine.

K: Intrusion velocity of operator's body or object (mm/s). The equation assumes an

intrusion direction perpendicular to the sensing area.

Response time of total equipment (s). T = T

Maximum halt time of device (s). For determining T

+ T

SF4B

, refer to the

machine documentation or take a measurement using a special device called a 'brake monitor'.

: Response time of this device (s)

SF4B

C: Additional distance calculated from the minimum size of the object to be detected by

the sensor (mm). C = 850 mm (Constant)

Before Using the Device

Safety Light Curtain SF4B

2.4.2.2 Calculation Example for the US

The equation safety distance S is calculated in accordance with ANSI B11.19 with the formula: S = K x (T

Tbm

SF4B

Dpf

+ Tc + T

+ Tbm) + Dpf

SF4B

Safety distance (mm) Minimum distance required between the sensing area surface and the dangerous

parts of the machine. Intrusion velocity of operator's body or object. The recommended value in OSHA

is 63inch/s ≈ 1,600mm/s. ANSI B11.19 does not define the intrusion velocity 'K'. When determining K,

consider possible factors including the physical ability of operators. Additional halting time tolerance for the brake monitor (s) T

= Ta - (Ts + Tc)

: Setting time of brake monitor (s)

When the machine is not equipped with a brake monitor, it is recommended that 20% or more of (T

+ Tc) is taken as additional halt

time.

: Halt time calculated from the operation time of the control element (air

valve, etc.) (s) Tc: Maximum response time of the control circuit required for the brake (s) Response time of this device (s) Additional distance calculated from the minimum size of the object to be detected

by the safety light curtain (mm) with the formula:



Dpf = 3.4 x (d - 0.276) inch ≈ 3.4 x d - 7mm SF4B-F Dpf = 23.8mm for minimum object diameter 0.552inch ≈ 14mm SF4B-H Dpf = 61.2mm for minimum object diameter 0.985inch ≈ 25mm SF4B-A Dpf = 129.2mm for minimum object diameter 1.772inch ≈ 45mm

NOTE

• The value of Dpf cannot be 0 or less.

• When the floating blanking function is used, the minimum size of the object

to be detected becomes larger. According to ANSI B11.1, Dpf = 900mm (3ft) when d > 64mm (2.5 inches).

Safety Light Curtain SF4B

• Since the calculation above is performed by taking 1 inch = 25.4mm, there is a slight difference between the representation in mm and that in inches. Refer to the relevant standard for details.



EXAMPLE

Calculate the safety distance with the following values:

2.4 Protection Area

SF4

d: 0.552 inch ≈ 14 mm

With these values, the calculation is as follows:

In case this device is installed in a system with a maximum halt time 0.1 (s)

Hence, as per the calculations Ds is 8.12inch ≈ 206.2mm.

14ms

= K x (T

= 63 x (Ta + 0.014) + 3.4 x (d - 0.276)inch

= 63 x (Ta + 0.014) + 3.4 x (0.552 - 0.276)

= 63 x Ta + 63 x 0.014 + 3.4 x 0.276

= 63 x Ta + 1.8204

≈ 63 x Ta + 1.82inch

= 63 x T = 63 x 0.1 + 1.82

= 8.12inch ≈ 206.248mm

+ Tc + T

+ 1.82

+ Tbm) + Dpf

SF4B



NOTE

Since the calculation above is performed by taking 1inch = 25.4mm, there is a slight difference between the representation in mm and that in inches. Refer to the relevant standard for details.

Before Using the Device

2.4.3 Influence of Reflective Surfaces

DANGER!

Safety Light Curtain SF4B

surfaces, make sure to install this device so that reflected light from the reflective surfaces does not affect the receiver. Alternatively, take countermeasures such as painting, masking, roughening, or changing the material of the reflective surfaces, etc. Failure to do so may cause the sensor not to detect properly,

If the device is installed in a place where there are reflective

which may result in death or serious injury.

Install this device at a distance of at least A (m, see table below) away from reflective surfaces such as metal walls, floors, ceilings, workpieces, covers, panels or glass surfaces.

Side view Top view

Reflective ceiling

Sensing range

Emitter

Reflective floor

Receiver

Emitter

Distance between emitter and receiver (sensing range L)

0.3 to 3m 0.16m 3 to 7m (SF4B-F and SF4B-H (72 to 96 beam channels) and SF4B-A

(36 to 48 beam channels) 3 to 9 m (for SF4B-H (12 to 64 beam channels) and SF4B-A (6 to 32

beam channels)

Reflective surface

3°

Receiver

Allowable installation distance A

L x tan ∂ = L x 0.052m (∂ = 3°)

Safety Light Curtain SF4B



NOTE

The effective aperture angle for this device is ±2.5° (when L > 3m) as required by IEC 61496-2 ANSI/UL 61496-2. However, install this device away from reflective surfaces considering an effective aperture angle of ±3° to account for beam misalignment, etc. during installation.

0.5

0.4

Install in this area

0.3

0.2

0.1

Allowable installation distance A (m)

2.4 Protection Area

Do not install in this area

19735

Distance between emitter and receiver L (m)

Allowable distance from sensor beam channel to reflective surface

2.4.4 Placement of Emitter and Receiver

If there is a problem with the wiring or when you need to evaluate the system before you add further equipment, place two or more sets of emitters and receivers facing each other without series or parallel connection between them. Perform an operation test (see page

71).

DANGER!

Refer to the examples of sensor placement as follows and understand them thoroughly before installing the sensors. Improper sensor placement could cause the sensor to malfunction, which may result in serious injury or death.

If this device is used in multiple sets, arrange them so that mutual interference is avoided. If mutual interference occurs, it can result in serious injury or death.

Before Using the Device



EXAMPLE

1) Install the emitters or the receivers back to back

Safety Light Curtain SF4B

2) Arrange the emitters and the receivers vertically on opposite sides.

Receiver

Emitter

3) Arrange the emitters and the receivers horizontally on opposite sides.

Emitter

Receiver



NOTE

Emitter

The figures above are just examples of sensor placement. If there are any questions or problems, please contact our office.

Receiver

Emitter

Receiver

4) Install a barrier

Receiver

Emitter

Barrier

Emitter

Receiver

Emitter

Safety Light Curtain SF4B

2.5 Mounting

There is no mounting bracket included with the device. Please purchase the mounting bracket appropriate for your installation environment. The following types of mounting brackets are available.

• Standard mounting bracket (MS-SFB-1)

• M8 360° rotatable mounting bracket (see page

• M8 rear mounting bracket (MS-SFB-7-T) (see page

• M8 side mounting bracket (see page

• M8 rear/side mounting bracket set (MS-SFB-1-T2) (see page

• Intermediate supporting bracket (MS-SFB-2)

• Dead zoneless mounting bracket (MS-SFB-3) (see page

• Protect bar (MC-SFBH-)

131)

132)

32)

2.5.1 Mounting of the Mounting Bracket

Before you start mounting the device, read the following important notes carefully.



NOTE

• Do not bend the cable of this device. Applying improper loads to the cable could cause the wire to break.

• The minimum bending radius of the cable is 6mm. Mount the sensor accordingly.

• Mount the emitter and the receiver at the same level and parallel to each other. The effective aperture angle of this device is ±2.5°or less for a sensing distance exceeding 3m.

• Unless otherwise specified, the mounting procedure is common for both emitters and receivers. To prepare the mounting holes, refer to the dimension diagrams (see page

• Models that come supplied with the intermediate supporting bracket MS-SFB-2 should only be installed with this bracket.

• The mounting method for the M8 360° rotatable mounting bracket (MS-SFB-1-T), the pitch adapter bracket (MS-SFB-4) and the M8 pitch adapter bracket (MS-SFB-4-T) is the same as for the standard mounting bracket (MS-SFB-1).

148).

Before Using the Device

• The mounting method for the M8 side mounting bracket (MS-SFB-8-T) and the rear / side mounting bracket set (MS-SFB-1-T2) is the same as for the rear mounting bracket (MS-SFB-7-T). Note that there are two different shapes for the side mounting bracket (MS-SFB-8-T) for the top and the bottom of the sensor.

• By default, the rear / side mounting bracket set (MS-SFB-1-T2) is assembled for rear mounting at the factory. The parts for side mounting are enclosed as accessories. If you want to mount the sensor on the side, remove the hexagon-socket head bolt for beam-axis alignment and mount the parts for side mounting. Note that there are two different shapes for the side mounting bracket (MS-SFB-8-T) for the top and the bottom of the sensor.

Safety Light Curtain SF4B

Remove Replace

Hexagon-socket head bolt for beam-axis

Part for rear mounting

Part for side mounting (top)

Part for side mounting (bottom)

• If you mount the mounting brackets after connecting the bottom cap cable (see page

34) and the cable for series connection (see page 36), make sure to pull the cable to the other side of the hexagon-socket head bolt to prevent the cable from being squeezed by the bolt.

Good Not good

2.5.1.1 Standard Mounting Bracket MS-SFB-1

Unless otherwise specified, the following mounting procedure is common for both emitters and receivers. To prepare the mounting holes, refer to the dimension diagram (see page

148).

Safety Light Curtain SF4B

Procedure

1. Loosen the hexagon-socket head bolt (M4, length: 6mm)

2. Rotate the bracket to adjust the installation direction of emitter and receiver

3. Tighten and fix the hexagon-socket head bolt for alignment

Hexagon-socket head bolt for alignment M4 (length: 6mm)

2.5 Mounting

The tightening torque should be 2N•m or less.

4. Set and fix both emitter and receiver so that they face each other

Marks are engraved on the standard mounting bracket so you can adjust the direction (see page

Rear 0°

Side 270°

30°

69) of the emitter/receiver in steps of 30 degrees.

Side mounting Rear mounting

Side 90°

5. Adjust the mounting hole on the side of the safety light curtain with the mounting hole of the standard mounting bracket

Standard mounting bracket (MS-SFB-1) (Optional)

Hexagon-socket head bolt

Unit

M5 (length: 16mm) (Enclosed with MS-SFB-1)

6. Fix the standard mounting bracket with the supplied hexagon-socket head bolt (M5, length: 16mm)

Before Using the Device

The tightening torque should be 1.2N•m or less.

7. Mount the standard mounting bracket (MS-SFB-1) on the mounting surface using either four M5 hexagon-socket head bolts or two M8 hexagon-socket head bolts

The M5/M8 bolts are not supplied with the safety light curtain.

Mounting with 4 bolts

Safety Light Curtain SF4B

Mounting with 2 bolts

Hexagon-socket head bolt [M5]

Unit

Hexagon-socket head bolt [M8]

Standard mounting bracket MS-SFB-1 (Optional)

Unit

2.5.1.2 Intermediate Supporting Bracket MS-SFB-2

Use this bracket to fix the middle part of the main body. Rear mounting and side mounting are possible.

Procedure

1. Loosen the hexagon-socket head bolt (M4, length: 12mm) of the intermediate supporting bracket

Hexagon-socket head bolt M4 (length: 12mm)

Safety Light Curtain SF4B

2. Insert the side of the safety light curtain into the intermediate supporting bracket

Unit

When setting the intermediate supporting bracket on both side surfaces of this device, fit the four pits and projectiles of both side surfaces of the safety light curtain to those of both side surfaces (inner surfaces) of the intermediate supporting bracket.

3. Fix the intermediate supporting bracket with the hexagon-socket head bolt (M4, length: 12mm)

The tightening torque should be 1.2N•m or less.

Fit the pits and projectiles of both side surfaces ofthis device to those of both side inner surfaces of the intermediate supproting bracket.

Intermediate supporting bracket MS-SFB-2 (Accessory)

2.5 Mounting

4. Align the beam axis

You find more information under beam-axis alignment (see page

69).

5. Mount the intermediate supporting bracket on the mounting surface using two M5 hexagon-socket head bolts

The M5 bolts are not supplied with intermediate supporting bracket.

Rear mounting

Intermediate supporting

Unit

Hexagon-socket head bolt [M5]

bracket (MS-SFB-2)

Hexagon-socket head bolt [M5]

Unit

Side mounting

Intermediate supportingbracket (MS-SFB-2)

Before Using the Device

Safety Light Curtain SF4B

2.5.1.3 Dead Zoneless Mounting Bracket MS-SFB-3

Use this bracket when connecting units in series to prevent dead zones at the interfaces. Rear mounting and side mounting are possible.

Procedure

1. Set the spacer attached to the dead zoneless mounting bracket onto the mounting hole on the side of the top (bottom) end part of the unit

2. Insert the hexagon-socket head bolt (M4, length: 25mm) into the hole

Rear mounting

Spacer (enclosed with

MS-SFB-3)

Unit Unit

Hexagon-socket head bolt M5 (length: 25mm enclosed with MS-SFB-3)

Side mounting

Spacer (enclosed with MS-SFB-3)

3. Adjust the hexagon-socket head bolt to the mounting hole of the dead zoneless mounting bracket (see below picture for rear or side mounting)

Rear mounting

Dead zoneless mounting bracket (MS-SFB-3) (Optional)

Side mounting

Dead zoneless mounting bracket (MS-SFB-3) (Optional)

Unit

4. Tighten and fix the bracket

The tightening torque should be 1.2N•m or less.

5. Mount the dead zoneless mounting bracket on the mounting surface using four hexagon-socket head bolts

Safety Light Curtain SF4B

The M5 bolts are not supplied with the dead zoneless mounting bracket.

Rear mounting Side mounting

2.5 Mounting

Hexagon-socket head bolt [M5]

Unit

Dead zoneless mounting bracket (MS-SFB-3) (Optional)

Hexagon-socket head bolt [M5]

Dead zoneless mounting bracket (MS-SFB-3) (Optional)

Unit

2.5.1.4 Protect-Bar Mounting Bracket MC-SFBH-□-T

Use this bracket if you need to protect the front face of the unit. Rear mounting and side mounting are possible.



NOTE

By default, the protect-bar mounting bracket (MC-SFBH-□-T) is assembled for rear mounting at the factory. The parts for side mounting are enclosed as accessories. If you want to mount the sensor on the side, remove the hexagon-socket head bolt for beam-axis alignment and mount the parts for side mounting. Note that there are two different shapes for the side mounting bracket (MS-SFB-8-T) for the top and the bottom of the sensor.

Remove Replace

Hexagon-socket head bolt for beam-axis alignment

Procedure

Part for rear mounting

Part for side mounting

1. Mount the protect bar mounting bracket to the unit with the two hexagon-socket head bolts supplied (M5, length: 18mm)

The tightening torque should be 1.2N•m or less.

2. Mount the protect bar to the protect-bar mounting bracket with a hexagon-socket head bolt (M5, length: 20mm)

Before Using the Device

The tightening torque should be 3N•m or less.

3. If the intermediate supporting bracket (MS-SFB-2) is used, mount the bracket with two hexagon-socket head bolts (M5, not supplied) on the mounting surface

4. If the protect-bar intermediate supporting bracket (MS-SFB-6) is used, mount the bracket with a hexagon-socket head bolt (M8, not supplied) on the mounting surface

5. Mount the protect-bar mounting bracket with a hexagon-socket head bolt (M8, not supplied) on the mounting surface

6. Adjust the angle of the emitter and the receiver horizontally within the adjustable range of the elongated hole

7. Tighten the M8 hexagon-socket head bolt

8. If used, adjust and tighten the protect-bar intermediate supporting bracket

Marks are engraved on the protect-bar mounting bracket so you can adjust the direction (see page

Hexagon-socket head

bolt with washer

M5 (length: 20mm)

Safety Light Curtain SF4B

69) of the emitter/receiver in steps of 30 degrees.

Part for rear mounting

Protect-bar mounting

bracket

Unit

Protect-bar intermediate supporting bracket MS-SFB-6 (Optional)

Protect bar

Hexagon-socket head bolt M5 (length: 18mm)

2.5.2 Mounting of the Bottom Cap Cable

The cable is optional and is not enclosed with the SF4B safety light curtain. There are four types bottom cap cables (see following table). The cable length is reflected in the model no.

Safety Light Curtain SF4B

Type Model No. Cable length (m)

SFB-CCB3 3 SFB-CCB7 7 SFB-CCB10 10 SFB-CCB15 15 SFB-CB05 0.5 SFB-CB5 5 SFB-CB10 10 SFB-CCB3-MU 3 Discrete wire type SFB-CCB7-MU 7



8-core

12-core

Discrete wire type

Connector type

Connector type SFB-CB05-MU 0.5

NOTE

There are two cables per set: One for the emitter (gray) and one for the receiver (black).

To mount the device with the cable, please follow the next procedure.

2.5 Mounting

Procedure

1. Insert the connector of the bottom cap cable (optional) into the connector of the unit

When inserting the connector, fit the cable into the groove of the unit.

Bottom cap cable (Optional)

Connector

Groove

Cable

Main body

2. Tighten the two M2.6 screws

The tightening torque should be 0.3 N•m or less.

M2.6 screw

(Enclosed with the bottom cap cable)

Before Using the Device

Safety Light Curtain SF4B

2.5.3 Mounting and Dismantling of a Series Connection

This section describes how to mount the cable for series connection. It is possible to connect a maximum of three sets of light curtains. Connect one or two sub systems to the main system and make sure, all emitters are on one side and all receivers are on the other side. One system consists of an emitter and a receiver. The emitter and receiver of the main system are connected by a synchronization wire.

There is no difference in the cable for series connection for the emitter and the receiver. The cable length is reflected in the model no.

Model No. Cable length (mm)

SFB-CSL01 100

SFB-CSL05 500

SFB-CSL1 1000

SFB-CSL5 5000

Use the following procedures for mounting respectively dismantling the series connection.

Mounting the cable for series connection SFB-CSL

First, you need to replace the normal cable with the cable for series connection.



NOTE

• Do not insert the connector part aslant.

Good

Connector

Not good

Connector

• Do not pull the cables before tightening the M2.6 screws.

Good

Fixed with M2.6 screws

Not good

Not fixed with M2.6 screws

Safety Light Curtain SF4B

• Do not insert the connector incorrectly and tighten the M2.6 screws.

2.5 Mounting

Good

No gap

Procedure

Not good

Gap

1. Loosen the two M2.6 screws of the end cap of the emitter and receiver of the main system

2. Remove the end cap from the unit of the main system

M2.6 screw

End cap

Unit of main system

3. Insert the connector of the cable for series connection (SFB-CSL) into the units of the main system and of the subsystems

When inserting the connector, fit the cable into the groove of the unit.

Cable for serial connection

(SFB-CSL□) (Optional)

Connector

Groove

Cable

Subsystem (Bottom side)

Cable

Groove

Main system

(Upper side)

Connector

4. Tighten the two M2.6 screws

Before Using the Device

The tightening torque should be 0.3N•m or less.

M2.6 screw

(Enclosed with the cable for series connection)

Safety Light Curtain SF4B



Subsyste

(Bottom side)

Main system (Upper side)

NOTE

• Please note that the shape of the connectors for the bottom side and for the end cap side on the cable for series connection (SFB-CSL) is different.

• The cable for series connection (SFB-CSL) cannot be extended.

• When the cable for series connection (SFB-CSL) is inserted to the unit of

the main system, take care not to bend the connector pins.

• To dismantle the cable for series connection, follow the preceding procedure in reverse.

Safety Light Curtain SF4B

2.6 Wiring

DANGER!

2.6 Wiring

Switch off the power before wiring the device.

All electrical wiring should conform to the regional electrical regulations and laws. The wiring should be done by engineer(s) having the required electrical knowledge.

Do not run the sensor cable together with high-voltage lines or power lines or put them together in the same raceway.

Connect the machine or the support where the sensor is mounted to the frame ground (F.G.). Failure to do so may cause the product to malfunction due to noise, resulting in serious injury or death.

The wiring should be done in a metal box connected to the frame ground (F.G.).

Take countermeasures regarding the system to ensure that dangerous performance caused by the earth failure cannot occur. Failure to do so could cause jeopardize the system stop, resulting in serious bodily injury or death.

Ground the 0V side (PNP output)/24V side (NPN output) to ensure that the output is not turned ON by accident due to an earth fault of the control output (OSSD 1, OSSD 2).

When this product is used in a situation where it has to conform to the Korean S-mark, make sure to ground the 0V side (PNP output).

Make sure to insulate the ends of the unused lead wires.

Use a safety relay unit or an equivalent safety control circuit as a final switching device (FSD).

Before Using the Device

2.6.1 PNP Output

Wiring diagram for PNP output with a 12-core cable

Emitter

Color code

(Brown) +V

(Red) Muting lamp output

(Yellow-green/Black) Auxiliary output

Safety Light Curtain SF4B

*S1*S1*S1

Main CircuitMain Circuit

Receiver

0.22μF

Internal circuit

0.047μF

0.22μF

470Ω

(Gray) Interference prevention +

(Gray/Black) Interference prevention -

(Yellow) Override input

(Pale purple) Interlock setting input

(Pink) Emission halt input / Reset input

(Shield) Output polarity setting wire

(Blue) 0V

(Orange) Synchronization +

(Orange/Black) Synchronization -

Users’ circuit

(Orange/Black) Synchronisation -

(Orange) Synchronization +

(Brown) +V (Gray) Interference prevention + (Gray/Black) Interference prevention -

(Sky-blue/White) Muting input A

1kΩ

(Sky-blue/Black) Muting input B

1kΩ

(Yellow-green) External device monitor input

470Ω

(Black) OSSD 1

(White) OSSD 2

*S1

24V DC

± 10%

Load

Internal circuit

Symbols in the wiring diagram

Switch S1

• Emission halt input/Reset input

(Shield) Output polarity setting wire

(Blue) 0V

Users’ circuit

When manual reset is activated:

• Vs to Vs - 2.5V (sink current: 5mA or less): Emission halt

• Open: Emission

When auto-reset is activated:

• Vs to Vs - 2.5V (sink current: 5mA or less): Emission Open: Emission halt

Safety Light Curtain SF4B

Symbols in the wiring diagram

K1, K2 External device (forcibly guided relay or magnetic contactor)

Vs = Applied supply voltage



• Interlock setting input, Override input, Muting input A/B, External device monitor input

NOTE

• Vs to Vs - 2.5 V (sink current: 5mA or less): Activates the function

• Open: Deactivates the function

The circuit diagram shown above is for a 12-core cable. The 8-core cable does not use the following wires: red, yellow, gray, gray/black, sky-blue/white, sky-blue/black.

2.6 Wiring

Before Using the Device

2.6.2 NPN Output

Wiring diagram for NPN output with a 12-core cable

Emitter

Main CircuitMain Circuit

Receiver

0.22μF

470Ω

Internal circuit

Color code

(Brown) +V

(Shield) Output polarity setting wire

(Yellow) Override input

(Pale purple) Interlock setting input

(Pink) Emission halt input / Reset input

(Gray) Interference prevention + (Gray / Black) Interference prevention -

(Yellow-green / Black) Auxiliary output

(Red) Muting lamp output

(Blue) 0V

(Orange) Synchronization +

(Orange / Black)

Synchronization -

Users' circuit

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Brown) +V

(Shield) Output polarity setting wire

(Black) OSSD 1

*S1

Safety Light Curtain SF4B

Load

24V DC

±10%

(Gray) Interference prevention + (Gray / Black) Interference prevention -

0.22μF

0.047μF

470Ω

1kΩ

(Blue) 0V

Symbols in the wiring diagram

Switch S1

• Emission halt input/Reset input

(White) OSSD 2

(Yellow-green) External device monitor input

/ White)

/ Black)

Muting input A

Muting input B

*S1

(Sky-blue

Users' circuitInternal circuit

When manual reset is activated:

• 0 to + 1.5V (source current: 5mA or less): Emission halt

• Open: Emission

When auto-reset is activated:

• 0 to + 1.5V (source current: 5mA or less): Emission

*S1

Safety Light Curtain SF4B

Symbols in the wiring diagram

• Open: Emission halt

• Interlock setting input,

Override input, Muting input A/B, External device monitor input

K1, K2 External device (forcibly guided relay or magnetic contactor)



NOTE

• 0 to + 1.5V (source current: 5mA or less): Activates the function

• Open: Deactivates the function

2.6 Wiring

The circuit diagram shown above is for a 12-core cable. The 8-core cable does not use the following wires: red, yellow, gray, gray/black, sky-blue/white, sky-blue/black.

2.6.3 Power Supply Unit

The wiring should be performed by a specialist who has the required electrical knowledge.

DANGER!

The DC power supply unit must satisfy the conditions given below.

• The power supply unit must be authorized for use in the region where this device is to be used.

• The power supply unit must conform to the EMC Directive and Low-Voltage Directive.

• The power supply unit must conform to CLASS 2 (only where UL/cUL conformity is

required)

• The power supply unit must have an output of 100VA or less. When this requirement is met, the power supply does not require a ground earth and satisfies the insulation distance called double-insulation or reinforced insulation as defined in IEC 60536 (CLASS: Protection against Electric Shock).

• In case the power supply conforms to the Low-Voltage Directive and has an output of 100VA or less, it can be used as a suitable product.

• The power supply unit must have an output holding time of 20ms or more.

• The frame ground (F.G.) terminal must be connected to ground when using a

commercially available switching regulator.

Wire correctly using a power supply unit which conforms to the laws and standards of the region where this device is to be used. If the power supply unit is non-conforming or the wiring is improper, it can cause damage or malfunction of this device.

• If there is a possibility of surge, take countermeasures such as connecting a surge absorber to the origin of the surge.

Before Using the Device

Safety Light Curtain SF4B

2.6.4 Output Signal during Self-Diagnosis

Since the receiver performs the self-diagnosis of the output circuit when the sensor is in light-receiving status (ON status), the output transistor turns OFF periodically (see following figure).

When the OFF signal is fed back, the receiver judges the output circuit as normal. When the OFF signal is not fed back, the receiver judges either the output circuit or wiring as faulty, and the control output (OSSD 1, OSSD 2) stays OFF.

DANGER!

Since the OFF signal of this device may cause a

OSSD 1

OSSD 2

OFF

Approx. 40μs

malfunction, pay attention to the input response time of the machine to be connected to this device when you perform the wiring.

Approx. 5.4ms

Approx. 100μs

Approx. 60μs

Approx. 40μs

Approx. 60μs

Approx. 40μs

Approx. 100μs

Approx. 40μs

2.6.5 Connecting Procedure and Connector Pin Assignment

Connect the mating cable (with a connector on one end or a connector on both ends) to the connector of the safety light curtain (emitter and receiver).

Wire the other side of the mating cable according to the customer's application referring to the connector pin assignment following.

DANGER!

No. of light curtain sets (emitter/receiver)

1 set 50m (40m, if a muting lamp is used) 2 sets 30m 3 sets 30m

following table may cause malfunction, which can result in serious injury or death.

Maximum cable length

Extending the cable longer than the length specified in the

Safety Light Curtain SF4B



NOTE

• When you need to extend the synchronization wire with a cable other than the exclusive cable, use a shielded twisted-pair cable with a diameter of

0.2mm

or more.

• When this device is used in conformity with the Korean S-mark, the power wire to be connected to this device should be less than 10m long.

Bottom cap cable/discrete wire Bottom cap cable/connector

Side A

Extension cable with connector on one end Extension cable with connectors on both ends

2.6 Wiring

Side B Side B

Connector at A side (for emitter/receiver)

8-core 12-core 12-core8-core

9 8

A and B side connectors (8-core and 12-core cable)

8-core cable SFB-CC

Emitter

Receiver

Cable/connector color

Gray/Gray

Gray (with black stripe)/Black

Pin No. Lead wire color Description

1 Pale purple Interlock setting input 2 Brown 24V DC 3 Pink Emission halt input/Reset input 4 Yellow-green/Black Auxiliary output 5 Orange Synchronization + 6 Orange/Black Synchronization 7 Blue 0V 8 (Shield) Output polarity setting wire 1 White Control output 2 (OSSD 2) 2 Brown 24V DC 3 Black Control output 1 (OSSD 1) 4 Yellow-green External device monitor input 5 Orange Synchronization + 6 Orange/Black

7 Blue 0V 8 (Shield) Output polarity setting wire

Side A

Connector at B side (for emitter/receiver)

Synchronization −

3 4

Before Using the Device

12-core cable SFB-CC-MU

Emitter

Receiver

Cable/connect or color

Gray/Gray

Gray (with black stripe)/Black

Safety Light Curtain SF4B

Pin No. Lead wire color Description

1 Pale purple Interlock setting input 2 Brown 24V DC 3 Pink Emission halt input/Reset input 4 Yellow-green/Black Auxiliary output 5 Orange Synchronization + 6 Orange/Black Synchronization 7 Blue 0V 8 (Shield) Output polarity setting wire 9 Gray Interference prevention + 10 Gray/Black Interference prevention 11 Yellow Override input 12 Red Muting lamp output 1 White Control output 2 (OSSD 2) 2 Brown 24V DC 3 Black Control output 1 (OSSD 1) 4 Yellow-green External device monitor input 5 Orange Synchronization + 6 Orange/Black Synchronization 7 Blue 0V 8 (Shield) Output polarity setting wire 9 Gray Interference prevention + 10 Gray/Black Interference prevention 11 Sky-blue/White Muting input A 12 Sky-blue/Black Muting input B



NOTE

The connectors can be distinguished by their color as follows:

• Connector for emitter: gray

• Connector for receiver: black

2.6.6 Basic Wiring

This is the general configuration using one set of an emitter and a receiver facing each other. The control output (OSSD 1, OSSD 2) turns OFF if the light is blocked, while it automatically turns ON if the light goes through.

The auxiliary output (Yellow-green/Black) has to be connected with the external device monitor function (Yellow-green).

Safety Light Curtain SF4B

2.6 Wiring

Feature Setting

Interlock function (see page 75) Deactivated (Auto-reset)

External device monitor function (see page 79) Deactivated

Auxiliary output (see page 78) Not available

Basic wiring for PNP output with a 12-core cable

(Gray) Interference prevention + (Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Pale purple) Interlock setting input

(Brown) 24V DC

Emitter

Receiver

Gray cable

Gray cable with black line

(Pink) Emission halt input / Reset input

(Shield) Output polarity setting wire

(Blue) 0V

(Yellow-green / Black) Auxiliary output

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

24V DC

±10%

Before Using the Device

Basic wiring for NPN output with a 12-core cable

(Gray) Interference prevention + (Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Pale purple) Interlock setting input

(Brown) 24V DC

Emitter

Receiver

Gray cable

Gray cable with black line

(Pink) Emission halt input / Reset input

(Shield) Output polarity setting wire

(Blue) 0V

(Yellow-green / Black) Auxiliary output

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Safety Light Curtain SF4B

24V DC ±10%



NOTE

The circuit diagrams shown above are for a 12-core cable. The 8-core cable does not use the following wires: red, yellow, gray, gray/black, sky-blue/white, sky-blue/black.

2.6.7 Wiring Examples

The following examples show how this device should be wired depending on the connection method and which function is used.

2.6.7.1 Manual Reset When Interlock is Activated (Control Category 4)

This is the general configuration using one set of an emitter and a receiver facing each other. The control output (OSSD 1, OSSD 2) turns OFF if the light is blocked.

Feature Setting

Interlock function (see page 75) Activated (manual reset) External device monitor function (see page 79) Activated Auxiliary output (see page 78) Available

Safety Light Curtain SF4B

PNP output wiring for a 12-core cable

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Brown) 24V DC

(Pale purple) Interlock setting input

Emitter

Receiver

Gray cable

Gray cable with black line

Symbols in the wiring diagram

(Pink) Emission halt input / Reset input

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Load

K1 K2

2.6 Wiring

24V DC ±10%

Switch S1

• Vs to Vs - 2.5V (sink current: 5mA or less): Emission halt

• Open: Emission

K1, K2 External device (forcibly guided relay or magnetic contactor)

Vs = Applied supply voltage

Before Using the Device

NPN output wiring for a 12-core cable

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Brown) 24V DC

(Yellow-green / Black) Auxiliary output

Emitter

Receiver

Gray cable

Gray cable with black line

Symbols in the wiring diagram

Switch S1

• 0 to +1.5V (source current 5mA or less): Emission halt

• Open: Emission

K1, K2 External device (forcibly guided relay or magnetic contactor)

(Shield) Output polarity setting wire

(Pink) Emission halt input / Reset input

(Pale purple) Interlock setting input

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Load

Safety Light Curtain SF4B

K1 K2

24V DC ±10%



NOTE

• The OSSD output type (PNP or NPN) is determined by the connecting state of the shield wire. Incorrect wiring may cause a lockout.

• The circuit diagrams shown above are for a 12-core cable. The 8-core cable uses the following wires: red, yellow, gray, gray/black, sky-blue/white, sky-blue/black. There is no lead wire.

Safety Light Curtain SF4B

2.6 Wiring

2.6.7.2 Series Connection (Control Category 4)

This is the configuration for connecting up to 3 sets of emitters and receivers in series with a maximum of 192 beam channels facing each other. It is used when the dangerous part can be accessed from two or more directions. The control output (OSSD 1, OSSD 2) turns OFF if the light is blocked.

Series connection

DANGER!

Feature Setting

Interlock function (see page 75) Activated (manual reset) External device monitor function (see page 79) Activated Auxiliary output (see page 78) Available

receivers in series. Connecting the emitters and receivers incorrectly may result in a dead non-sensing area, which could lead to serious injury or death.

Use only the cable SFB-CSL to connect emitters and

Before Using the Device

Wiring for series connection of a 12-core cable with PNP output

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

Gray cable

Receiver 2 Subsystem

Emitter 1 Main system Emitter 2 Subsystem

Receiver 1 Main system

Gray cable

with black line

Symbols in the wiring diagram

(Yellow) Override input

(Brown) 24V DC

(Pale purple) Interlock setting input

(Pink) Emission halt input / Reset input

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Load

K1 K2

Safety Light Curtain SF4B

24V DC ±10%

Switch S1

• Vs to Vs - 2.5V (sink current: 5mA or less): Emission halt

• Open: Emission

K1, K2 External device (forcibly guided relay or magnetic contactor)

Vs = Applied supply voltage

Safety Light Curtain SF4B



NOTE

The circuit diagrams shown above are for a 12-core cable. The 8-core cable uses the following wires: red, yellow, gray, gray/black, sky-blue/white, sky-blue/black. There is no lead wire.

Wiring for series connection of a 12-core cable with NPN output

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

Gray cable

Receiver 2 Subsystem

Emitter 1 Main system Emitter 2 Subsystem

Receiver 1 Main system

Gray cable

with black line

Symbols in the wiring diagram

Switch S1

• 0 to +1.5V (source current 5mA or less): Emission halt

• Open: Emission

K1, K2 External device (forcibly guided relay or magnetic contactor)

(Yellow) Override input

(Brown) 24V DC

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Pink) Emission halt input / Reset input

(Pale purple) Interlock setting input

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Load

K1 K2

2.6 Wiring

24V DC ±10%



NOTE

• The OSSD output type (PNP or NPN) is determined by the connecting state of the shield wire. Incorrect wiring may cause a lockout.

• The circuit diagrams shown above are for a 12-core cable. The 8-core cable uses the following wires: red, yellow, gray, gray/black, sky-blue/white, sky-blue/black. There is no lead wire.

Before Using the Device

Safety Light Curtain SF4B

2.6.7.3 Parallel Connection (Control Category 4)

This is the configuration for connecting multiple sets of emitters and receivers facing each other in parallel. It is used when there are two dangerous parts and each dangerous part can be accessed from only one direction. By connecting the interference prevention wire, up to three sets of the light curtain can be connected. For the control output (OSSD 1, OSSD 2), only the output of the sensor of which the light is blocked turns OFF.

DANGER!

Feature Setting

Interlock function (see page 75) Activated (manual reset) External device monitor function (see page 79) Activated Auxiliary output (see page 78) Available

other connection using the interference prevention line as shown in the following figure. Connecting the emitters and receivers incorrectly may result in a dead non-sensing area, resulting in serious injury or death.

For parallel connection, connect the one receiver to the

Safety Light Curtain SF4B

Parallel connection with PNP output

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Brown) 24V DC

(Pale purple) Interlock setting input

(Pink) Emission halt input / Reset input

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Brown) 24V DC

(Pale purple) Interlock setting input

(Pink) Emission halt input / Reset input

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Receiver

with black line

Receiver

with black line

Master side

Gray cable

Emitter

Gray cable

Slave side

Gray cable

Emitter

Gray cable

Load

K1 K2

2.6 Wiring

24V DC ±10%

Before Using the Device

Symbols in the wiring diagram

Safety Light Curtain SF4B

Switch S1

K1, K2 External device (forcibly guided relay or magnetic contactor)

Vs = Applied supply voltage



• The OSSD output type (PNP or NPN) is determined by the connecting state of

• If you extend the interference prevention wire, use a shielded twisted-pair

• Vs to Vs - 2.5V (sink current: 5mA or less): Emission halt

• Open: Emission

NOTE

the shield wire. Incorrect wiring may cause a lockout.

cable with a diameter of 0.2mm² or more.

Safety Light Curtain SF4B

Parallel connection with NPN output

(Gray) Interference prevention +

Receiver

with black line

Receiver

Gray cable

with black line

Master side

Gray cable

Emitter

Gray cable

Slave side

Gray cable

Emitter

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Brown) 24V DC

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Pink) Emission halt input / Reset input

(Pale purple) Interlock setting input

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Brown) 24V DC

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Pink) Emission halt input / Reset input

(Pale purple) Interlock setting input

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Load

K1 K2

2.6 Wiring

24V DC ±10%

Before Using the Device

Symbols in the wiring diagram

Switch S1

K1, K2 External device (forcibly guided relay or magnetic contactor)



• 0 to +1.5V (source current 5mA or less): Emission halt

• Open: Emission

NOTE

Safety Light Curtain SF4B

• The OSSD output type (PNP or NPN) is determined by the connecting state of the shield wire. Incorrect wiring may cause a lockout.

• If you extend the interference prevention wire, use a shielded twisted-pair cable with a diameter of 0.2mm² or more.

2.6.7.4 Mixed Connection (Control Category 4)

This is the configuration for connecting multiple sets of emitters and receivers facing each other in a combination of series and parallel connections. It is used when there are two or more dangerous parts that can be accessed from two or more directions. You can connect up to three sets of sensors in total in the series and parallel mixed connection. The total number of beam channels available is 192. The control outputs (OSSD 1, OSSD 2) only turn OFF if the light is blocked.

DANGER!

Feature Setting

Interlock function (see page 75) Activated (manual reset) External device monitor function (see page 79) Activated Auxiliary output (see page 78) Available

Use only the cable SFB-CSL to connect emitters and receivers in series. Connecting the emitters and receivers incorrectly may result in a dead non-sensing area, which could lead to serious injury or death.

For parallel connection, connect the one receiver to the other connection using the interference prevention line as shown in the following figure. Connecting the emitters and receivers incorrectly may result in a dead non-sensing area, resulting in serious injury or death.

Safety Light Curtain SF4B

Mixed series and parallel connection with PNP output

Master side

Gray cable

Receiver 2 Subsystem

Emitter 1 Main system Emitter 2 Subsystem

Receiver 1 Main system

Gray cable

with black line

Slave side

Gray cable

Emitter

Receiver

Gray cable

with black line

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Brown) 24V DC

(Pale purple) Interlock setting input

(Pink) Emission halt input / Reset input

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Brown) 24V DC

(Pale purple) Interlock setting input

(Pink) Emission halt input / Reset input

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Load

K1 K2

2.6 Wiring

24V DC ±10%

Before Using the Device

Symbols in the wiring diagram

Safety Light Curtain SF4B

Switch S1

K1, K2 External device (forcibly guided relay or magnetic contactor)

Vs = Applied supply voltage



NOTE

• The OSSD output type (PNP or NPN) is determined by the connecting state of

• If you extend the interference prevention wire, use a shielded twisted-pair

• Vs to Vs - 2.5V (sink current: 5mA or less): Emission halt

• Open: Emission

the shield wire. Incorrect wiring may cause a lockout.

cable with a diameter of 0.2mm² or more.

Safety Light Curtain SF4B

Mixed series and parallel connection with NPN output

Master side

Gray cable

Receiver 2 Subsystem

Emitter 1 Main system Emitter 2 Subsystem

Receiver 1 Main system

Gray cable

with black line

Slave side

Gray cable

Emitter

Receiver

Gray cable

with black line

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Brown) 24V DC

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Pink) Emission halt input / Reset input

(Pale purple) Interlock setting input

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Brown) 24V DC

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Pink) Emission halt input / Reset input

(Pale purple) Interlock setting input

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Load

K1 K2

Load

K1 K2

2.6 Wiring

24V DC ±10%

Before Using the Device

Safety Light Curtain SF4B

Symbols in the wiring diagram

Switch S1

• 0 to +1.5V (source current 5mA or less): Emission halt

• Open: Emission

K1, K2 External device (forcibly guided relay or magnetic contactor)



NOTE

• The OSSD output type (PNP or NPN) is determined by the connecting state of the shield wire. Incorrect wiring may cause a lockout.

• If you extend the interference prevention wire, use a shielded twisted-pair cable with a diameter of 0.2mm² or more.

2.6.7.5 Auto-Reset (Control Category 4)

Feature Setting

Interlock function (see page 75) Deactivated (auto-reset) External device monitor function (see page 79) Activated Auxiliary output (see page 78) Available

Wiring for PNP output when the auto-reset function is active

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Pale purple) Interlock setting input

(Brown) 24V DC

(Pink) Emission halt input / Reset input

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Load

K1 K2

Receiver

with black line

Gray cable

Emitter

Gray cable

24V DC ±10%

Safety Light Curtain SF4B

Symbols in the wiring diagram

2.6 Wiring

Switch S1

• Vs to Vs - 2.5V (sink current: 5mA or less): Emission halt

• Open: Emission

K1, K2 External device (forcibly guided relay or magnetic contactor)

Vs = Applied supply voltage



NOTE

• The OSSD output type (PNP or NPN) is determined by the connecting state of the shield wire. Incorrect wiring may cause a lockout.

• The circuit diagrams shown above are for a 12-core cable. The 8-core cable uses the following wires: red, yellow, gray, gray/black, sky-blue/white, sky-blue/black. There is no lead wire.

Wiring for NPN output when the auto-reset function is active

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

Gray cable

Emitter

Receiver

Gray cable

with black line

Symbols in the wiring diagram

Switch S1

• 0 to +1.5V (source current 5mA or less): Emission halt

• Open: Emission

K1, K2 External device (forcibly guided relay or magnetic contactor)

(Pale purple) Interlock setting input

(Brown) 24V DC

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Pink) Emission halt input / Reset input

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Load

K1 K2

24V DC ±10%

Before Using the Device



NOTE

Safety Light Curtain SF4B

• The OSSD output type (PNP or NPN) is determined by the connecting state of the shield wire. Incorrect wiring may cause a lockout.

• The circuit diagrams shown above are for a 12-core cable. The 8-core cable uses the following wires: red, yellow, gray, gray/black, sky-blue/white, sky-blue/black. There is no lead wire.

2.6.7.6 External Device Monitor Function Deactivated (Control Category 4)

This is the configuration for connecting an auxiliary output and external device monitor input. Deactivate the external device monitor function with the handy controller. Set the auxiliary output with 'negative logic of the control outputs (OSSD 1, OSSD 2)' (factory setting) with the handy controller SFB-HC (optional). The auxiliary output cannot be connected to external devices.

Feature Setting

Interlock function (see page 75) Deactivated (auto-reset) External device monitor function (see page 79) Deactivated Auxiliary output (see page 78) Not available

Wiring for PNP output when the external device monitor function is deactivated

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

(Pale purple) Interlock setting input

(Brown) 24V DC

(Pink) Emission halt input / Reset input

(Shield) Output polarity setting wire

(Blue) 0V

(Yellow-green / Black) Auxiliary output

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Receiver

Gray cable

Emitter

Gray cable

with black line

24V DC ±10%

Safety Light Curtain SF4B

Symbols in the wiring diagram

2.6 Wiring

Switch S1

• Vs to Vs - 2.5V (sink current: 5mA or less): Emission halt

• Open: Emission

K1, K2 External device (forcibly guided relay or magnetic contactor)

Vs = Applied supply voltage



NOTE

• The OSSD output type (PNP or NPN) is determined by the connecting state of the shield wire. Incorrect wiring may cause a lockout.

• The circuit diagrams shown above are for a 12-core cable. The 8-core cable uses the following wires: red, yellow, gray, gray/black, sky-blue/white, sky-blue/black. There is no lead wire.

Wiring for NPN output when the external device monitor function is deactivated

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Red) Muting lamp output

(Yellow) Override input

Gray cable

Emitter

Receiver

Gray cable

with black line

Symbols in the wiring diagram

Switch S1

• 0 to +1.5V (source current 5mA or less): Emission halt

• Open: Emission

K1, K2 External device (forcibly guided relay or magnetic contactor)

(Pale purple) Interlock setting input

(Brown) 24V DC

(Shield) Output polarity setting wire

(Pink) Emission halt input / Reset input

(Blue) 0V

(Yellow-green / Black) Auxiliary output

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

24V DC ±10%

Before Using the Device



NOTE

Safety Light Curtain SF4B

• The OSSD output type (PNP or NPN) is determined by the connecting state of the shield wire. Incorrect wiring may cause a lockout.

• The circuit diagrams shown above are for a 12-core cable. The 8-core cable uses the following wires: red, yellow, gray, gray/black, sky-blue/white, sky-blue/black. There is no lead wire.

2.6.7.7 Muting Function (Control Category 4)

Feature Setting

Interlock function (see page 75) Deactivated (manual reset) External device monitor function (see page 79) Activated Auxiliary output (see page 78) Available

Wiring for PNP output when the muting function is activated

(Gray) Interference prevention + (Gray / Black) Interference prevention -

(Pale purple) Interlock setting input

(Brown) 24V DC

(Red) Muting lamp output

(Pink) Emission halt input / Reset input

Receiver

Gray cable

Gray cable with black line

Emitter

(Yellow) Override input

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Sky-blue / White) Muting input A

(Sky-blue / Black) Muting input B

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Blue) 0V

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Symbols in the wiring diagram

Switch S1

• Vs to Vs - 2.5V (sink current: 5mA or less): Emission halt

• Open: Emission

Switch S2 Muting input, override input:

• Vs to Vs - 2.5V (sink current 5mA or less): Activated

• Open: Deactivated

(Note)

Load

K1 K2

24V DC ±10%

Safety Light Curtain SF4B

Symbols in the wiring diagram

K1, K2 External device (forcibly guided relay or magnetic contactor)

Vs = Applied supply voltage



NOTE

You must connect an incandescent lamp with 3 to 10W to the muting lamp output. If the muting lamp is not connected, the muting function does not work.

Wiring for NPN output when the muting function is activated

(Gray) Interference prevention +

(Gray / Black) Interference prevention -

(Pale purple) Interlock setting input

(Brown) 24V DC

Emitter

Receiver

Gray cable

Gray cable with black line

(Yellow-green / Black) Auxiliary output

(Shield) Output polarity setting wire

(Yellow) Override input

(Pink) Emission halt input / Reset input

(Red) Muting lamp output

(Blue) 0V

(Orange) Synchronization +

(Orange / Black) Synchronization -

(Orange / Black) Synchronization (Orange) Synchronization +

(Yellow-green) External device monitor input

(Brown) 24V DC

(Black) Control output 1 (OSSD1)

(White) Control output 2 (OSSD2)

(Shield) Output polarity setting wire

(Sky-blue / Black) Muting input B

(Sky-blue / White) Muting input A

(Blue) 0V

(Gray / Black) Interference prevention -

(Gray) Interference prevention +

Load

(Note)

K1 K2

2.6 Wiring

24V DC ±10%

Before Using the Device

Symbols in the wiring diagram

Switch S1

• 0 to +1.5V (source current 5mA or less): Emission halt

• Open: Emission

Switch S2 Muting input, override input:

• 0 to +1.5V (source current 5mA or less): Activated

• Open: Deactivated

K1, K2 External device (forcibly guided relay or magnetic contactor)



NOTE

You must connect an incandescent lamp with 3 to 10W to the muting lamp output. If the muting lamp is not connected, the muting function does not work.

Safety Light Curtain SF4B

2.7 Adjustment

The following sections contain information about the proper adjustment and operation of the safety light curtain.

You have to align the beam axis and test the light curtain in your application environment.

2.7.1 Beam-Axis Alignment

To align the beam axis, please proceed as follows:

Procedure

1. Turn ON the power supply unit of the safety light curtain

2. Check that the digital error indicator (red) and the fault indicator (yellow) of the emitter and receiver are off

If the digital error indicator (red) or the fault indicator (yellow) lights up or blinks, refer to the chapter on troubleshooting (see page

111) and report this to the

maintenance staff in charge.

3. When you are using the intermediate supporting bracket (MS-SFB-2), loosen the two M5 hexagon-socket head bolts

4. When you are using the standard mounting bracket (MS-SFB-1) for mounting this sensor, loosen the hexagon-socket head bolts for alignment of the standard mounting brackets and adjust the emitter and receiver so that they face each other

There are marks engraved on part A. With the help of these marks, you can adjust the angle of the emitter/receiver in steps of 30 degrees.

5. Tighten the hexagon-socket head bolt for alignment of the standard mounting bracket

The tightening torque should be 2N•m or less.

6. Loosen the hexagon-socket head bolt for beam axis alignment of the standard mounting bracket and adjust the emitter/receiver so that the beam-axis alignment indicators in the display of the emitter and receiver light up

The emitter and the receiver can be adjusted ±15 degrees.

Before Using the Device

Safety Light Curtain SF4B

15° 15°

The beam-axis alignment indicator indicates the reception status for each section of a receiver. The receiver is divided into 4 sections. Also, the A (D) of the beam-axis alignment indicates the light-receiving status of the top end (bottom end) beam channel. For example, when using a 24-beam channel sensor, there are 6 beam channels per section (i.e., 24/4=6). When the top end (bottom end) beam channel is received, the indicator A (D) of the beam-axis alignment blinks red. The following figure shows an example with 24 beam channels.

Only top end beam channel

Light received

Light blocked

is received

5 beam channels

including the top end

beam channel are

received

6 beam channels in top

block are received

5 beam channels excluding

the top end beam channel

are received

Symbols

: Received

: Blocked

: Blinks

: Lights up

:Turns off

7. After the adjustment, tighten the hexagon-socket head bolt for beam axis alignment of the standard mounting bracket

The tightening torque should be 2N•m or less.

8. Tighten the two intermediate supporting brackets

Safety Light Curtain SF4B

9. Check again that the beam-axis alignment indicators in the display of the emitter and receiver light up

2.7.2 Operation Test

To test the installation, please proceed as follows:

2.7 Adjustment

When you carry out step 3, check that the control outputs (OSSD 1, OSSD 2) are OFF and that both the OSSD indicator (red) of the receiver and the operation indicator (red) of the emitter light up as long as the test rod is present within the sensing area.

Procedure

1. Turn ON the power supply unit of the safety light curtain.

2. Check that the digital error indicator (red) and the fault indicator (yellow) of the emitter and the receiver are off.

If the digital error indicator (red) or the fault indicator (yellow) lights up or blinks, refer to the chapter on troubleshooting (see page maintenance staff in charge.

3. Move the test rod up and down at three positions, just in front of the emitter (A), in the middle between the emitter and receiver (B), and just in front of the receiver (C).

(A) (B) (C)

Emitter

Test rod

Receiver

111) and report this to the

If the behavior of the control outputs (OSSD 1, OSSD 2) and the turning ON/OFF of the emitter/receiver indicators do not correspond to the movement of the test rod, refer to the chapter on troubleshooting (see page



NOTE

If the indicators show reception of light even though the test rod blocks the light, check whether there is a reflective object or extraneous light source near this device.

111) and report this to the maintenance staff in charge.

Chapter 3

Functions

Safety Light Curtain SF4B

3.1 Self-Diagnosis Function

The safety light curtain is equipped with a self-diagnosis function. Self-diagnosis is carried out when the power is turned ON and periodically during the operation.

In case an abnormality is detected during self-diagnosis, the device is immediately put in the lockout state and the control output (OSSD 1, OSSD 2) is set to OFF state. Find and remove the cause of the abnormality (see page

111).

Safety Light Curtain SF4B

3.2 Interlock Function

When the light curtain has been interrupted and control output (OSSD1, OSSD2) is OFF, the interlock function keeps the control output at OFF until a reset signal is input.

You can select whether interlock is enabled (manual reset) or disabled (automatic reset) by the way in which the interlock setting input line (pale purple) is connected.

You have to wire the SF4B accordingly to activate the interlock function and the manual reset. Without wiring the interlock function is disabled and auto reset is active.

Interlock function Reset operation

Enabled Manual reset 0V, +V connection Disabled Auto reset Open

Manual reset:

The control output (OSSD 1, OSSD 2) is not turned ON automatically even though this device receives light. When there is a signal at the reset input, the control output (OSSD 1, OSSD 2) is turned ON.

Auto-reset:

The control output (OSSD 1, OSSD 2) is turned ON automatically when this device receives light.

Emission halt Input/Reset input

Reception status

Control output (OSSD 1, OSSD 2)

Open

0V, +V

Beam received

Beam blocked

OFF

14ms or less

Time diagram for manual reset

Interlock setting input (pale purple)

20ms or less

150ms or less



NOTE

• If this device is used with auto-reset, avoid an auto-restart after the safety output stop of the system by using a safety relay unit etc. (EN 60204-1).

• You can change the conditions for interlocking with the handy controller SFB-HC (optional).

Functions

Safety Light Curtain SF4B

3.3 Emission Halt Function

This function is used to test the functionality of the safety light curtain and the external devices. It stops the emission process of the emitter. You can select whether emission is on or halted by means of the connection status for the emission halt input/reset input wire (pink).

If the machinery is not stopped the cause may be a malfunction due to extraneous noise or an abnormality in the control output (OSSD 1/2) or the auxiliary output even from the machinery side.

Setting status of interlock function

Emission halt input/Reset input Emission status

Open Emission halt Enabled (auto reset) 0V, +V connection Emission Open Emission Disabled (manual reset) 0V, +V connection Emission halt

During emission halt, the control output (OSSD 1/2) turns OFF.

• Normal operation is restored when the emission halt input/reset input is connected to 0V or +V (for manual reset: Open).

• When the interlock function is disabled (automatic reset), normal operation is restored when the emission halt input/reset input wire (pink) is connected to 0V or +V.



NOTE

The time diagram shows the operation in auto-reset mode. In manual reset mode, the device performs emission under status "Open" and performs emission halt under status "0V, +V".

Emission halt Input/Reset input

Emission

Open

0V, +V

20ms or less

Emission status (note 1)

Control output (OSSD 1, OSSD 2)

Emission

Emission halt

OFF

Time diagram in auto-reset mode

DANGER!

Do not use the emission halt function to stop the machine as this could result in serious injury or death.

14ms or less

90ms or less

Safety Light Curtain SF4B

3.4 Interference Prevention Function

It is possible to construct the system in such a way that malfunction due to interference of light from other SF4B series devices is prevented. The interference prevention system works with up to three sets of sensors in series connection (see page channels in series connection is 192.

51). The maximum number of beam

Functions

Safety Light Curtain SF4B

3.5 Auxiliary Output (Non-Safety Output)

This device is equipped with an auxiliary output for non-safety-related purposes. The auxiliary output is incorporated with the emitter.

Auxiliary output setting

Negative logic of OSSD (factory setting)



NOTE

You can switch the output operation for auxiliary output with the handy controller SFB-HC (optional).

Emission halt

ON OFF ON ON

Normal mode

Control output (OSSD 1, OSSD 2) status

Beam received Beam blocked

Lockout

Reception status

Control output (OSSD 1, OSSD 2)

Auxiliary output (negative logic of OSSD)

Time diagram

Beam received

Beam blocked

OFF

14ms or less

20ms or less 20ms or less

90ms or

less

DANGER!

Do not use the auxiliary output to stop the machine as this could result in serious injury or death.

Safety Light Curtain SF4B

3.6 External Device Monitor Function

This is the function for checking whether the external safety relay connected to the control output (OSSD 1, OSSD 2) performs normally in accordance with the control output (OSSD 1, OSSD 2) or not. If any abnormality such as a deposit on the contacting point, etc. is detected, the status of the sensor changes to lockout and the control output (OSSD 1, OSSD 2) is turned to OFF.

• When the external device monitor function is activated:

Connect the external device monitor input to the external safety relay of the control output (OSSD 1, OSSD 2).

• When the external device monitor function is deactivated:

Connect the external device monitor input to the auxiliary output. By default, the auxiliary output is set to negative logic of the control output (OSSD 1, OSSD 2). The setting can be changed with the handy controller SFB-HC (optional). In this case, the auxiliary output cannot be connected to external devices.



NOTE

You can deactivate the external device monitor function or change the time range with the handy controller SFB-HC (optional).

Beam

Reception status

Control output (OSSD 1, OSSD 2)

External device monitor input

received

Beam blocked

OFF

Time diagram for normal operation

14ms or less

300ms or

less

90ms or less

300ms or

less

Functions

Safety Light Curtain SF4B

If the device monitor function is active and an error occurs, it takes 300ms or less to set the device to lockout status. The time range can be set from 100 to 600ms (unit: 10ms) with the handy controller SFB-HC (optional).

14ms or less

300ms

Lockout status

Reception status

Control output (OSSD 1, OSSD 2)

External device monitor input

Beam received

Beam blocked

OFF

Time diagram for error 1

Beam

Reception status

Control output (OSSD 1, OSSD 2)

External device monitor input

received Beam

blocked

OFF

Time diagram for error 2

90ms or less

300ms

Lockout status

Safety Light Curtain SF4B

3.7 Muting Function

The muting function deactivates the protection function of the light curtain temporarily. You can activate the muting function only if no workpiece is in the sensing area, this means the control outputs (OSSD 1, OSSD 2) have to be ON.

This function is useful for passing workpieces through the sensing area of the light curtain without stopping the machinery.

DANGER!



NOTE

• The muting function complies with the requirements defined in the following international standards:

• ISO 13849-1 (EN 954-1/JIS B 9705-1): 'Safety of machinery - Safety-related parts of control systems - Part 1: General principles for design, Article 5.9 Muting'

Incorrect use of the muting function may cause accidents. Please study the muting function carefully before you use it.

Use the muting function while the machine cycle is not in danger mode. Maintain safety by using other measures while the muting control is activated.

For applications where the muting function is used when a workpiece passes through, place the muting sensors at such a distance that the muting function cannot be activated by personnel by accident.

Install the muting lamp in a position where it can always be seen by operators who configure or adjust the machine.

Be sure to check that the muting function is working properly before you use it in live operation. Furthermore, check the state of the muting lamp (cleanliness, brightness, etc.).

• IEC 61496-1 (UL 61496/JIS B 9704-1): 'Safety of machinery - Electro sensitive protective equipment - Part 1: General requirements and tests' Annex A, A.7 Muting

• IEC 60204-1 (JIS B 9960-1): 'Safety of machinery - Electrical equipment of machines - Part 1: General requirements, 9.2.4 Overriding safeguards'

• EN 415-4: 'Safety of packaging machines part 4. Palletizers and depalletizers' Annex A, A2.2 Muting'

• ANSI B11.19-1990: 'for Machine Tools-Safeguarding When Referenced by the Other B11 Machine Tool Safety Standards-Performance Criteria for the

Functions

Design, Construction, Care, and Operation' 4.2.3 Presence-Sensing Devices: Electro-Optical and Radio Frequency (R.F.)

• ANSI/RIA R15.06-1999: 'for Industrial Robots and Robot Systems - Safety Requirements, 10.4.5 Muting'

The muting function is active when all the conditions listed below are satisfied:

• The control output (OSSD 1, OSSD 2) is ON.

• The incandescent lamp with 3 to 10W is connected to the muting lamp output.

• The output of the muting sensors A, B, C, and D switch from OFF (open) to ON in a time

range of 0.03 to 3 seconds.

Photoelectric sensors with semiconductor output, inductive proximity sensors, position switches on NO (Normal Open) contacting point, etc. can be used as muting sensors.



NOTE

Normally the diagnosis function for controlling the muting lamp is activated. With the handy controller SFB-HC (optional) you can determine that the muting functions works even if no muting lamp is connected or the muting lamp has burned out.

Safety Light Curtain SF4B

3.7.1 Specification for the Muting Sensor

The muting sensors can be photoelectric sensors, inductive proximity sensors, or position switches etc. They have to be in the ON state if an object is sensed. For NPN output this means 0V, for PNP output +V.

DANGER!

Only use a device that satisfies the specification for the muting sensor mentioned above. If you use a different device that does not meet the requirements of a muting sensor, the muting function may operate with a different timing than expected, which could result in serious injury or death.

Always connect a muting lamp to make the status of the function visible. It is forbidden to activate the muting function if no muting lamp is connected.

Safety Light Curtain SF4B

3.7.2 Installation of the Muting Sensor

Muting sensor B Light curtain

Muting sensor A

Guard

Object to be

sensed

S (m/s)

Muting sensor C

Muting sensor D

3.7 Muting Function

1. The distance between muting sensors A to C and between B to D must be shorter than the whole length of the object to be sensed.

2. The distance between muting sensors A to B has to be covered by the object to be sensed in 30ms to 3 seconds. (S = speed) Distance between A and B: S x 3 (s)

Guard

2 3

+V +V

Safety zone Dangerous zone

Muting

sensor A

Muting input A Muting input B

Muting

sensor C

Muting

sensor B

Installing the muting sensor with PNP output

Muting

sensor A

Muting input A Muting input B

Muting

sensor C

0V 0V0V 0V

Muting

sensor B

Installing the muting sensor with NPN output

3. The distance between muting sensors C to D has to be covered by the object to be sensed in less than 3 seconds. Distance between C and D: S x 3 (s)

Muting

sensor D

Muting

sensor D

Functions

Muting sensor A

Muting sensor B

Muting sensor C

OFF

Safety Light Curtain SF4B

30ms to less than 3 sec.

Muting sensor D

Muting function

Reception status

Control output (OSSD 1, OSSD 2)

OFF

Beam received

Beam blocked

OFF

Time diagram of the muting function

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NOTE

• When the diagnosis function for the muting lamp is active: If the muting lamp does not light up after 1s, the muting function is deactivated. When diagnosis function for the muting lamp is not active: The muting function is activated with a delay of 50ms after the input conditions of the muting sensor A (C) and B (D) are satisfied.

• You can deactivate the muting function per beam channel and to specify the activation order of the muting sensor with the handy controller SFB-HC (optional).

50ms to 1 sec. (Note 1)

14ms or less

• We recommend connecting two muting lamps in parallel. Do not exceed 10W.

Safety Light Curtain SF4B

3.8 Override Function

This function enables you to override the machine stop signal and to enter the muting state. It is used to restart the system smoothly when the sequence of operations is incorrect or in case of power loss.

If this function is used, it forcibly deactivates the safety function of the light curtain. The override function is used when the muting function is active, something happened which stopped the operation (as described above) and the operation then needs to be restarted again with the control output (OSSD 1, OSSD 2) in OFF status (e.g. there is still some material in the detection field of this device which needs to be moved out of the detection field before the safety function can be reactivated).

DANGER!



NOTE

• The muting function complies with the requirements defined in the following

• ISO 13849-1 (EN 954-1/JIS B 9705-1): 'Safety of machinery - Safety-related

Incorrect use of the muting function may cause accidents. Please study the muting function carefully before you use it.

Use the muting function while the machine cycle is not in danger mode. Maintain safety by using other measures while the muting function is activated.

For applications where the muting function is used when a workpiece passes through, place the muting sensors at such a distance that the muting function cannot be activated by personnel by accident.

Install the muting lamp in a position where it can always be seen by operators who configure or adjust the machine.

Be sure to check that the muting function is working properly before you use it in live operation. Furthermore, check the state of the muting lamp (cleanliness, brightness, etc.).

international standards.

parts of control systems - Part 1: General principles for design, Article 5.9 Muting'

• IEC 61496-1 (UL 61496/JIS B 9704-1): 'Safety of machinery - Electro sensitive protective equipment - Part 1: General requirements and tests' Annex A, A.7 Muting

• IEC 60204-1 (JIS B 9960-1): 'Safety of machinery - Electrical equipment of machines - Part 1: General requirements, 9.2.4 Overriding safeguards'

• EN 415-4: 'Safety of packaging machines part 4. Palletizers and depalletizers' Annex A, A2.2 Muting'

Functions

• ANSI B11.19-1990: 'for Machine Tools-Safeguarding When Referenced by the Other B11 Machine Tool Safety Standards-Performance Criteria for the Design, Construction, Care, and Operation' 4.2.3 Presence-Sensing Devices: Electro-Optical and Radio Frequency (R.F.)

• ANSI/RIA R15.06-1999: 'for Industrial Robots and Robot Systems - Safety Requirements, 10.4.5 Muting'

The override function is active when all the conditions listed below are satisfied:

• The incandescent lamp with 3 to 10W is connected to the muting lamp output.

• The override signal is input from either the muting sensor A or B.

• The override input is connected to 0V or +V, and the emission halt input/reset input is

opened (for 3 seconds)

If any of the three conditions above is not satisfied or takes longer than 60 seconds, the override function is deactivated.



NOTE

• Normally the diagnosis function for controlling the muting lamp is activated. With the handy controller SFB-HC (optional) you can determine that the muting functions works even if no muting lamp is connected or the muting lamp has burned out.

Safety Light Curtain SF4B

• The override function operates only when auto-reset is ON (the interlock function is disabled).

Safety Light Curtain SF4B

3.8 Override Function

Emission halt input / Reset input

Override input

Sensor A / C

Sensor B / D

Override function

Reception status

Control output (OSSD 1, OSSD 2)

Open

0V, +V

Open

0V, +V

OFF

Beam received

Beam blocked

OFF

Within 1 sec.

3 to 4 sec. (Note)

Time diagram for the override function

Override input time: Max. 60 sec.

14ms or less

90ms or less

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NOTE

When the diagnosis function for the muting lamp is active: If the muting lamp does not light up after 1s, the muting function is deactivated. When the diagnosis function for the muting lamp is not active: The muting function starts 3s after the input conditions of the muting sensor A (C) and B (D) are satisfied.

Functions

Safety Light Curtain SF4B

3.9 Functions of the Optional Handy Controller SFB-HC

You can set the following functions with the handy controller SFB-HC (optional). For details, refer to the instruction manual enclosed with the handy controller.

DANGER!

object to be sensed, the response speed, etc. may differ depending on the function. When you set each function, recalculate the safety distance and install the device at a distance larger than the safety distance. Not keeping the distance may result in a situation where the machine does not stop quickly

Please note that the safety distance, the size of the minimum

Function Details

Fixed blanking [Fixed blanking]

Floating blanking [Floating blanking]

Emission intensity control

[Light emission control]

Auxiliary output switching (non-safety output)

[Auxiliary output]

Interlock setting [Inter Lock] Start/Restart interlock

Start interlock

Restart interlock

External device monitor setting

enough, resulting in serious bodily injury or death.

This function prevents the control output (OSSD 1, OSSD 2) from turning OFF even though the specific beam channel is blocked. By default, the fixed blanking function is not active. (Note 1)

This function prevents the control output (OSSD 1, OSSD 2) from turning OFF as long as not more than the set number of beam channels are blocked. The position of the blocked beam channels does not matter. You can set the floating blanking function for 1, 2, or 3 beam channels. By default, the floating blanking function is not active. (Note 1)

The emission intensity control function offers two modes, normal mode and short mode. The factory setting is normal mode.

The auxiliary output can be switched to execute the following functions:

0. Negative logic of the control output (OSSD 1, OSSD 2) (factory setting)

1. Positive logic of the control output (OSSD 1, OSSD 2)

2. For emission: output ON, for non-emission: output OFF

3. For emission: output OFF, for non-emission: output ON

4. For unstable incident beam: OFF (Note 2)

5. For unstable incident beam: ON (Note 2)

6. For muting: ON

7. For muting: OFF

8. For beam reception: ON, for beam blocked: OFF (Note 3)

9. For beam reception: OFF, for beam blocked: ON (Note 3) Select one from the following three interlock settings.

The sensor goes into interlock state after the power is turned on or when the light is blocked. This is the factory setting.

The sensor goes into interlock state when the power supply is turned on. Once t his interlock state is reset, the device does not go into the interlock state again.

The sensor does not go into the interlock state when the power supply is turned on. Only when the control output (OSSD 1, OSSD 2) turns ON and the light is blocked, the sensor goes into the interlock state.

You can make the following settings for the external device monitor: Permissible response time: 100 to 600ms (unit: 10ms). The factory setting is 300ms. The external

Safety Light Curtain SF4B

Function Details

[Device Monitor] Muting setting [Muting]

Password protection [Protect] Override setting

function



NOTE

device monitor function is activated/deactivated. The factory setting is activated. You can make the following settings for the muting function:

• When the muting function is active, you can specify the output order of the muting

• You can activate the muting function per beam channel (Note 4). By default, the

• The diagnosis function for the muting lamp can be activated/deactivated (Note 5).

• The output operation of a muting sensor which is to be connected to the muting input

When this function is active, you need to enter the password to change the settings of the sensor. The factory setting is deactivated.

You can set the maximum time for the override function in the range of 60 to 600 seconds in steps of 10 seconds (Note 5).

1. The fixed blanking function and floating blanking function can be set at the same time.

3.9 Functions of the Optional Handy Controller SFB-HC

sensors A and B.

muting function is active for all beam channels.

The factory setting is activated.

of the sensor can be set with the handy controller SFB-HC . The factory setting for the output operation is NONO (Normally Open, Normally Open, Note 6).

2. The auxiliary output cannot be used when the functions fixed blanking, floating blanking or muting are activated.

3. Functions 8 and 9 cannot be used when you have activated one of the following functions: fixed blanking, floating blanking , and muting.

4. If a beam channel is blocked that is not set during the muting function, the muting function will be deactivated and the control output (OSSD 1, OSSD 2) is turned off.

5. This function can only be set with a handy controller SFB-HC (optional) where software version 2 or later is installed. The function cannot be set with a handy controller with the software version 1.

6. The factory setting for the output operation is NONO (Normally Open, Normally Open). You can set the output operation to NONC (Normally Open, Normally Closed). Connect a sensor or switch with an output operation of NO (Normally Open) to muting input A and a sensor or switch with an output operation of NC (Normally Closed) to muting input B. To activate the muting function, the time between the muting input A turning ON from OFF (= open state) and the muting input B turning OFF (= open state) from ON must be no longer than 3 seconds. The output operation for NONC works as follows:

Muting input

NO (Normally Open) type:

• ON when no light is received (photoelectric sensor, etc.)

Operation at ON state

Operation at OFF state

Functions

Safety Light Curtain SF4B

Muting input

• ON when object is approaching (inductive proximity sensor, etc.)

• ON when object has contact

(position switch, etc.)

NC (Normally Closed) type:

• ON when light is received (photoelectric sensor, etc.)

• ON when no object is approaching (inductive proximity sensor, etc.)

Operation at ON state

0V or 24V DC

Operation at OFF state

Open

• ON when no object has

contact (position switch, etc.)

Chapter 4

Operation

Safety Light Curtain SF4B

4.1 Normal Operation

The status of the emitter/receiver indicators during normal operation is as described as follows.

Indicator symbol Explanation

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NOTE

1. Since the color of the operation indicator changes according to whether the control outputs (OSSD 1, OSSD 2) are ON or OFF, the operation indicator on the light curtain is marked 'OSSD'.

2. The following table shows the status of the emitter/receiver indicators during operation when you are using a PNP output. When you are using an NPN output, the NPN indicator lights up orange.

All beams received Lights up green

Blinks red

Lights up red Lights up green Lights up orange OFF

Indicators Control output Beam status

Emitter Receiver OSSD 1/OSSD 2

Lights up green

Beam-axis alignment indicator [RECEPTION] (Green)

Operation indicator [OSSD] (Green) (Note 1)

Incident beam intensity indicator [STB] (Green)

Fault indicator [FAULT]

Digital error indicator

PNP indicator [PNP] (Orange) (Note 2)

NPN indicator [NPN]

Emission intensity control indicator [CTRL]

Emission halt indicator [HALT]

Beam-axis alignment indicator [RECEPTION] (Green)

OSSD indicator [OSSD] (Green)

Incident beam intensity indicator [STB] (Green)

Fault indicator [FAULT]

Digital error indicator

PNP indicator [PNP] (Orange) (Note 2)

NPN indicator [NPN]

Function setting indicator [FUNCTION]

Interlock indicator [INTERLOCK]

Panasonic SF4B-H28(V2), SF4B-H36(V2) User guide

Specifications and Main Features

Frequently Asked Questions

User Manual

BEFORE BEGINNING

LIMITED WARRANTY

Important Symbols

Table of Contents

Introduction

1.1 Target Group

1.2 Safety Instructions

1.3 Applicable Standards/Regulations

Before Using the Device

2.1 Features

2.2 Confirmation of Packed Contents

2.3 Part Description

2.3.1 How the Display Works

2.4 Protection Area

2.4.1 Sensing Area

2.4.2 Safety Distance

2.4.2.1 Calculation Example for Europe

2.4.2.2 Calculation Example for the US

2.4.3 Influence of Reflective Surfaces

2.4.4 Placement of Emitter and Receiver

2.5 Mounting

2.5.1 Mounting of the Mounting Bracket

2.5.1.1 Standard Mounting Bracket MS-SFB-1

2.5.1.2 Intermediate Supporting Bracket MS-SFB-2

2.5.1.3 Dead Zoneless Mounting Bracket MS-SFB-3

2.5.1.4 Protect-Bar Mounting Bracket MC-SFBH-□-T

2.5.2 Mounting of the Bottom Cap Cable

2.5.3 Mounting and Dismantling of a Series Connection

2.6 Wiring

2.6.1 PNP Output

2.6.2 NPN Output

2.6.3 Power Supply Unit

2.6.4 Output Signal during Self-Diagnosis

2.6.5 Connecting Procedure and Connector Pin Assignment

2.6.6 Basic Wiring

2.6.7 Wiring Examples

2.6.7.1 Manual Reset When Interlock is Activated (Control Category 4)

2.6.7.2 Series Connection (Control Category 4)

2.6.7.3 Parallel Connection (Control Category 4)

2.6.7.4 Mixed Connection (Control Category 4)

2.6.7.5 Auto-Reset (Control Category 4)

2.6.7.6 External Device Monitor Function Deactivated (Control Category 4)

2.6.7.7 Muting Function (Control Category 4)

2.7 Adjustment

2.7.1 Beam-Axis Alignment

2.7.2 Operation Test

Functions

3.1 Self-Diagnosis Function

3.2 Interlock Function

3.3 Emission Halt Function

3.4 Interference Prevention Function

3.5 Auxiliary Output (Non-Safety Output)

3.6 External Device Monitor Function

3.7 Muting Function

3.7.1 Specification for the Muting Sensor

3.7.2 Installation of the Muting Sensor

3.8 Override Function

3.9 Functions of the Optional Handy Controller SFB-HC

Operation

4.1 Normal Operation