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.

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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)

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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

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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.

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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)

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