Banner SLLVR23-350, SLLVP23-420, SLLVP23-630, SLLVR23-630, SLLVE23-910 Instruction Manual

EZ-SCREEN®

204120

Instruction Manual

LS Basic Safety Light Screen

Original Instructions
204120 Rev. A
4 January 2018

©

Banner Engineering Corp. All rights reserved

EZ-SCREEN® LS Basic Safety Light Screen

Contents

1 About This Document

1.1 Important . . . Read This Before Proceeding! .....................................................................................................................4

1.2 Use of Warnings and Cautions ...........................................................................................................................................4

1.3 EU Declaration of Conformity (DoC) ..................................................................................................................................4

1.4 Banner Engineering Corp Limited Warranty ......................................................................................................................4

1.5 Contact Us ......................................................................................................................................................................... 5

.............................................................................................................................................4

2 Standards and Regulations ..................................................................................................................................... 7

2.1 Applicable U.S. Standards ................................................................................................................................................. 7

2.2 Applicable OSHA Regulations ............................................................................................................................................7

2.3 International/European Standards ..................................................................................................................................... 8

3 Product Overview .................................................................................................................................................... 9

3.1 Appropriate Applications and Limitations ....................................................................................................................... 10

3.1.1 Appropriate Applications .....................................................................................................................................10

3.1.2 Examples: Inappropriate Applications ................................................................................................................ 10

3.1.3 Control Reliability: Redundancy and Self-Checking ........................................................................................... 11

3.2 Components .....................................................................................................................................................................11

3.2.1 Models .................................................................................................................................................................11

3.2.2 Replacement Parts ...............................................................................................................................................13

3.3 Operating Features ...........................................................................................................................................................13

3.3.1 Trip Output .......................................................................................................................................................... 13

3.3.2 External Device Monitoring (EDM) ........................................................................................................................13

3.3.3 Fault Output ........................................................................................................................................................ 13

3.3.4 Scan Code Configuration

3.3.5 Wiring Options .....................................................................................................................................................13

3.3.6 EZ-LIGHT® Indication ......................................................................................................................................... 14

3.3.7 Status Indicators ................................................................................................................................................. 14

....................................................................................................................................13

4 Specifications ....................................................................................................................................................... 16

4.1 General Specifications .................................................................................................................................................... 16

4.2 Receiver Specifications ...................................................................................................................................................16

4.3 Emitter

4.4 Dimensions .......................................................................................................................................................................18

Specifications ..................................................................................................................................................... 17

5 Mechanical Installation .......................................................................................................................................... 20

5.1 Mechanical Installation Considerations ...........................................................................................................................20

5.1.1 Calculating the Safety Distance (Minimum Distance) .......................................................................................... 20

5.1.2 Reducing or Eliminating Pass-Through Hazards ................................................................................................ 22

5.1.3 Supplemental Safeguarding ................................................................................................................................23

5.1.4 Reset Switch Location ......................................................................................................................................... 23

5.1.5 Adjacent Reflective Surfaces .............................................................................................................................. 24

5.1.6 Use of Corner Mirrors

5.1.7 Emitter and Receiver Orientation ........................................................................................................................ 26

5.1.8 Installation of Multiple Systems ...........................................................................................................................27

5.2 Mounting System Components ........................................................................................................................................28

5.2.1 Mounting Hardware .............................................................................................................................................28

5.2.2 Mounting the End-Mount Brackets .....................................................................................................................29

5.2.3 Mounting the Center- and Side-Mount Brackets ................................................................................................30

5.2.4 EZLSA-MBK-16 Side-Mount Bracket .................................................................................................................. 30

5.2.5 Sensor Mounting and Mechanical Alignment ..................................................................................................... 31

5.2.6 Mounting Dimensions ...........................................................................................................................................32

..........................................................................................................................................25

6 Electrical Installation and Testing ..........................................................................................................................34

6.1 Routing Cordsets ............................................................................................................................................................. 34

6.2 Initial Electrical Connections ........................................................................................................................................... 35

6.3 Initial Checkout Procedure ...............................................................................................................................................35

6.3.1 Configuring the System for Initial Checkout ........................................................................................................35

6.3.2 Initial Power-Up

6.3.3 Optical Alignment ................................................................................................................................................36

6.3.4 Optical Alignment Procedure with Mirrors .......................................................................................................... 37

6.3.5 Trip Test ............................................................................................................................................................... 38

6.4 Electrical Connections to the Guarded Machine .............................................................................................................39

6.4.1 OSSD Output Connections ................................................................................................................................. 39

6.4.2 FSD Interfacing Connections .............................................................................................................................. 40

6.4.3 Machine Primary Control Elements and EDM Input .............................................................................................41

6.4.4 External Device Monitoring ................................................................................................................................. 41

6.4.5 Fault Output ........................................................................................................................................................ 42

....................................................................................................................................................36

EZ-SCREEN® LS Basic Safety Light Screen

6.4.6 Scan Code Select ................................................................................................................................................42

6.4.7 Preparing for System Operation

6.4.8 Sensor Interchangeability .....................................................................................................................................42

6.5 Wiring Diagrams ............................................................................................................................................................... 43

6.5.1 Reference Wiring Diagrams .................................................................................................................................43

..........................................................................................................................42

7 System Operation .................................................................................................................................................49

7.1 Security Protocol .............................................................................................................................................................49

7.2 Status Indicators .............................................................................................................................................................. 49

7.2.1 Emitter ................................................................................................................................................................. 49

7.2.2 Receiver ...............................................................................................................................................................49

7.3 Normal Operation ............................................................................................................................................................50

7.3.1 System Power-Up ............................................................................................................................................... 50

7.3.2 Run Mode .............................................................................................................................................................50

7.4 Periodic Checkout Requirements ................................................................................................................................... 50

8 Checkout Procedures ............................................................................................................................................52

8.1 Schedule of Checkouts ................................................................................................................................................... 52

8.2 Commissioning Checkout ............................................................................................................................................... 52

9 Troubleshooting ....................................................................................................................................................54

9.1 Lockout Conditions .......................................................................................................................................................... 54

9.2 Recovery Procedures ......................................................................................................................................................54

9.2.1 Receiver Error Codes .......................................................................................................................................... 54

9.2.2 Emitter Error Codes .............................................................................................................................................56

9.3 Electrical and Optical Noise ............................................................................................................................................ 56

9.3.1 Checking for Sources of Electrical Noise ............................................................................................................56

9.3.2 Check for Sources of Optical Noise ....................................................................................................................56

10 Maintenance ....................................................................................................................................................... 57

10.1 Cleaning ........................................................................................................................................................................ 57

10.2 Warranty Service ........................................................................................................................................................... 57

10.3 Manufacturing Date .......................................................................................................................................................57

10.4 Disposal ..........................................................................................................................................................................57

11 Accessories ......................................................................................................................................................... 58

11.1 Cordsets ........................................................................................................................................................................58

11.1.1 Single-Ended (Machine Interface) Cables ......................................................................................................... 59

11.1.2 Double-Ended Cordsets .....................................................................................................................................60

11.1.3 Splitter Cordsets ............................................................................................................................................... 61

11.1.4 Bulkhead Connector ..........................................................................................................................................62

11.2 AC Interface Boxes ....................................................................................................................................................... 63

11.3 Universal (Input) Safety Modules ...................................................................................................................................63

11.4 Safety Controllers ..........................................................................................................................................................63

11.5 Muting Module .............................................................................................................................................................. 64

11.6 Interface Modules ...........................................................................................................................................................64

11.7 Contactors ......................................................................................................................................................................64

11.8 Optional Mounting Brackets ...........................................................................................................................................65

11.8.1 ............................................................................................................................................................................65

11.9 Alignment Aids .............................................................................................................................................................. 67

11.10 Snap-On Lens Shields ................................................................................................................................................ 67

11.11 Tubular Enclosures ......................................................................................................................................................67

11.12 EZ-LIGHTS® for EZ-SCREEN® ...................................................................................................................................68

11.13 MSM Series Corner Mirrors .........................................................................................................................................69

11.14 SSM Series Corner Mirrors ......................................................................................................................................... 70

11.15 MSA Series Stands ..................................................................................................................................................... 71

12 Glossary ..............................................................................................................................................................72

WARNING

CAUTION

EZ-SCREEN® LS Basic Safety Light Screen

1 About This Document

1.1 Important . . . Read This Before Proceeding!

It is the responsibility of the machine designer, controls engineer, machine builder, machine operator, and/or maintenance
personnel or electrician to apply and maintain this device in full compliance with all applicable regulations and standards.
The device can provide the required safeguarding function only if it is properly installed, properly operated, and properly
maintained. This manual attempts to provide complete installation, operation, and maintenance instruction.

manual in its entirety is highly recommended.

Banner Engineering.
For more information regarding U.S. and international institutions that provide safeguarding application and safeguarding

device performance standards, see

WARNING: User Responsibility

The user is responsible to:

•

Carefully read, understand, and comply with all instructions for this device.

• Perform a risk assessment that includes the specific machine guarding application. Guidance on a
compliant methodology can be found in ISO 12100 or ANSI B11.0.

•

Determine what safeguarding devices and methods are appropriate per the results of the risk assessment
and implement per all applicable local, state, and national codes and regulations. See ISO 13849-1, ANSI
B11.19, and/or other appropriate standards.

• Verify that the entire safeguarding system (including input devices, control systems, and output devices) is
properly configured and installed, operational, and working as intended for the application.

•

Periodically re-verify, as needed, that the entire safeguarding system is working as intended for the
application.

Failure to follow any of these responsibilities may potentially create a dangerous condition that could
result in serious injury or death.

Standards and Regulations

Please direct any questions regarding the application or use of the device to

on page 7.

Reading the

1.2 Use of Warnings and Cautions

The precautions and statements used throughout this document are indicated by alert symbols and must be followed for
the safe use of the EZ-SCREEN LS Basic Safety Light Screen. Failure to follow all precautions and alerts may result in
unsafe use or operation. The following signal words and alert symbols are defined as follows:

Signal Word Definition Symbol

Warnings refer to potentially hazardous situations which, if not
avoided, could result in serious injury or death.

Cautions refer to potentially hazardous situations which, if not
avoided, could result in minor or moderate injury.

These statements are intended to inform the machine designer and manufacturer, the end user, and maintenance
personnel, how to avoid misapplication and effectively apply the EZ-SCREEN LS Basic Safety Light Screen to meet the
various safeguarding application requirements. These individuals are responsible to read and abide by these statements.

1.3 EU Declaration of Conformity (DoC)

Banner Engineering Corp. herewith declares that the EZ-SCREEN LS Basic is in conformity with the provisions of the
Machinery Directive 2006/42/EC and all essential health and safety requirements have been met.

Representative in EU: Peter Mertens, Managing Director Banner Engineering Europe. Address: Park Lane, Culliganlaan 2F,
1831 Diegem, Belgium.

1.4 Banner Engineering Corp Limited Warranty

Banner Engineering Corp. warrants its products to be free from defects in material and workmanship for one year following
the date of shipment. Banner Engineering Corp. will repair or replace, free of charge, any product of its manufacture which,
at the time it is returned to the factory, is found to have been defective during the warranty period. This warranty does not
cover damage or liability for misuse, abuse, or the improper application or installation of the Banner product.

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EZ-SCREEN® LS Basic Safety Light Screen

THIS LIMITED WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED
(INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE), AND WHETHER ARISING UNDER COURSE OF PERFORMANCE, COURSE OF DEALING OR TRADE USAGE.

This Warranty is exclusive and limited to repair or, at the discretion of Banner Engineering Corp., replacement. IN NO
EVENT SHALL BANNER ENGINEERING CORP. BE LIABLE TO BUYER OR ANY OTHER PERSON OR ENTITY FOR ANY
EXTRA COSTS, EXPENSES, LOSSES, LOSS OF PROFITS, OR ANY INCIDENTAL, CONSEQUENTIAL OR SPECIAL
DAMAGES RESULTING FROM ANY PRODUCT DEFECT OR FROM THE USE OR INABILITY TO USE THE PRODUCT,
WHETHER ARISING IN CONTRACT OR WARRANTY, STATUTE, TORT, STRICT LIABILITY, NEGLIGENCE, OR
OTHERWISE.

Banner Engineering Corp. reserves the right to change, modify or improve the design of the product without assuming any
obligations or liabilities relating to any product previously manufactured by Banner Engineering Corp. Any misuse, abuse, or
improper application or installation of this product or use of the product for personal protection applications when the
product is identified as not intended for such purposes will void the product warranty. Any modifications to this product
without prior express approval by Banner Engineering Corp will void the product warranties. All specifications published in
this document are subject to change; Banner reserves the right to modify product specifications or update documentation
at any time. Specifications and product information in English supersede that which is provided in any other language. For
the most recent version of any documentation, refer to:

www.bannerengineering.com

.

1.5 Contact Us

Corporate Headquarters

Address:
Banner Engineering Corporate
9714 Tenth Avenue North
Minneapolis, Minnesota 55441, USA

Europe

Address:
Banner Engineering EMEA
Park Lane, Culliganlaan 2F, bus 3
1831 Diegem, Belgium

Turkey

Address:
Banner Engineering Elk. San. Ve Tic. Ltd. Şti.
Şerifali Mah. Münevver Sok. Ekomed Plaza No:10 Kat:4
Ümraniye / İstanbul, Türkiye

India

Address:
Banner Engineering India Pune Head Quarters
Office No. 1001, 10th Floor Sai Capital, Opp. ICC Senapati Bapat Road
Pune 411016, India

Mexico

Phone: [phone]
Website:

Phone: [phone]
Website:
Email: [e-mail]

Phone: [phone]
Website:
Email: [e-mail]

Phone: [phone]
Website:
Email: [e-mail]

www.bannerengineering.com

www.bannerengineering.com

www.bannerengineering.com

www.bannerengineering.com

Address:
Banner Engineering de Mexico Monterrey Head Office
Edificio VAO Av. David Alfaro Siqueiros No.103 Col. Valle Oriente C.P.66269
San Pedro Garza Garcia, Nuevo Leon, Mexico

Brazil

Address:
Banner do Brasil
Rua Barão de Teffé nº 1000, sala 54
Campos Elíseos, Jundiaí - SP, CEP.: 13208-761, Brasil

www.bannerengineering.com - Tel: [phone]

Phone: [phone] or 01 800 BANNERE (toll free)
Website:
Email: [e-mail]

Phone: [phone]
Website:
Email: [e-mail]

www.bannerengineering.com

www.bannerengineering.com

EZ-SCREEN® LS Basic Safety Light Screen

China

Address:
Banner Engineering Shanghai Rep Office
Xinlian Scientific Research Building Level 12, Building 2
1535 Hongmei Road, Shanghai 200233, China

Japan

Address:
Banner Engineering Japan
Cent-Urban Building 305 3-23-15 Nishi-Nakajima Yodogawa-Ku
Osaka 532-0011, Japan

Taiwan

Address:
Banner Engineering Taiwan
8F-2, No. 308 Section 1, Neihu Road
Taipei 114, Taiwan

Phone: [phone]
Website:
Email: [e-mail]

Phone: [phone]
Website:
Email: [e-mail]

Phone: [phone]
Website:
Email: [e-mail]

www.bannerengineering.com

www.bannerengineering.com

www.bannerengineering.com

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EZ-SCREEN® LS Basic Safety Light Screen

2 Standards and Regulations

The list of standards below is included as a convenience for users of this Banner device. Inclusion of the standards below
does not imply that the device complies specifically with any standard, other than those specified in the Specifications
section of this manual.

2.1 Applicable U.S. Standards

ANSI B11.0 Safety of Machinery, General Requirements,
and Risk Assessment

ANSI B11.1 Mechanical Power Presses
ANSI B11.2 Hydraulic Power Presses
ANSI B11.3 Power Press Brakes
ANSI B11.4 Shears
ANSI B11.5 Iron Workers
ANSI B11.6 Lathes
ANSI B11.7 Cold Headers and Cold Formers
ANSI B11.8 Drilling, Milling, and Boring
ANSI B11.9 Grinding Machines
ANSI B11.10 Metal Sawing Machines
ANSI B11.11 Gear Cutting Machines
ANSI B11.12 Roll Forming and Roll Bending Machines
ANSI B11.13 Single- and Multiple-Spindle Automatic Bar

and Chucking Machines
ANSI B11.14 Coil Slitting Machines

2.2 Applicable OSHA Regulations

ANSI B11.15 Pipe, Tube, and Shape Bending Machines
ANSI B11.16 Metal Powder Compacting Presses
ANSI B11.17 Horizontal Extrusion Presses
ANSI B11.18 Machinery and Machine Systems for the

Processing of Coiled Strip, Sheet, and Plate
ANSI B11.19 Performance Criteria for Safeguarding
ANSI B11.20 Manufacturing Systems
ANSI B11.21 Machine Tools Using Lasers
ANSI B11.22 Numerically Controlled Turning Machines
ANSI B11.23 Machining Centers
ANSI B11.24 Transfer Machines
ANSI/RIA R15.06 Safety Requirements for Industrial Robots

and Robot Systems
ANSI NFPA 79 Electrical Standard for Industrial Machinery
ANSI/PMMI B155.1 Package Machinery and Packaging-

Related Converting Machinery — Safety Requirements

OSHA Documents listed are part of: Code of Federal Regulations Title 29, Parts 1900 to 1910
OSHA 29 CFR 1910.212 General Requirements for (Guarding of) All Machines
OSHA 29 CFR 1910.147 The Control of Hazardous Energy (lockout/tagout)
OSHA 29 CFR 1910.217 (Guarding of) Mechanical Power Presses

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EZ-SCREEN® LS Basic Safety Light Screen

2.3 International/European Standards

EN ISO 12100 Safety of Machinery – General Principles for
Design — Risk Assessment and Risk Reduction

ISO 13857 Safety Distances . . . Upper and Lower Limbs
ISO 13850 (EN 418) Emergency Stop Devices, Functional

Aspects – Principles for Design
EN 574 Two-Hand Control Devices – Functional Aspects –

Principles for Design
IEC 62061 Functional Safety of Safety-Related Electrical,

Electronic and Programmable Control Systems
EN ISO 13849-1 Safety-Related Parts of Control Systems
EN 13855 (EN 999) The Positioning of Protective Equipment

in Respect to Approach Speeds of Parts of the Human Body
ISO 14119 (EN 1088) Interlocking Devices Associated with

Guards – Principles for Design and Selection

EN 60204-1 Electrical Equipment of Machines Part 1:
General Requirements

IEC 61496 Electro-sensitive Protection Equipment
IEC 60529 Degrees of Protection Provided by Enclosures
IEC 60947-1 Low Voltage Switchgear – General Rules
IEC 60947-5-1 Low Voltage Switchgear – Electromechanical

Control Circuit Devices
IEC 60947-5-5 Low Voltage Switchgear – Electrical

Emergency Stop Device with Mechanical Latching Function
IEC 61508 Functional Safety of Electrical/Electronic/

Programmable Electronic Safety-Related Systems

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EZ-SCREEN® LS Basic Safety Light Screen

3 Product Overview

EZ-SCREEN LS Basic Safety Light Screen

Banner EZ-SCREEN LS Basic is a two-piece (emitter and receiver), redundant, microprocessor-controlled, opposed-mode
optoelectronic "light curtain" or "safety light screen". Models are available in 23 mm resolution.

Emitters have a row of synchronized modulated infrared (invisible) light-emitting diodes (LEDs) in a robust, compact metal
housing. Receivers have a corresponding row of synchronized photodetectors. The sensing field created by the emitter and
receiver is called the "defined area"; its width and height are determined by the length of the sensor pair and the distance
between them. The sensing range spans from 100 mm to 8 m (4 in to 26 ft), which decreases if corner mirrors or lens
shields are used.

The length of the sensor pair (housing) is dependent on the model, with lengths available from 350 mm to 1820 mm (13.8 in
to 71.6 in). The end to end sensing design of the EZ-SCREEN LS Basic, also known as "no blind zone" and "no dead zone,"
allows mounting with minimal or no gaps in detection when using EZLSA-MBK-12 center-mount or EZLSA-MBK-16 side­mount brackets.

The EZ-SCREEN LS Basic models have trip output (auto power-up and automatic reset). In typical operation, if any part of
an operator's body (or any opaque object) of more than a pre-determined cross section is detected, the solid-state output
signal switching device (OSSD) safety outputs turn Off. These safety outputs are connected to the guarded machine's final
switching devices (FSDs) that control the machine primary control elements (MPCEs), which immediately stop the motion of
the guarded machine. When the defined

EZ-SCREEN LS Basic sensors are extensively FMEA (Failure Mode and Effects Analysis) tested to establish an extremely
high degree of confidence that when properly installed, no system component (even if it should ever fail) can cause a failure
to danger. Because of the dual scan technology, EZ-SCREEN LS Basic sensors are also highly immune to EMI, RFI,
ambient light, weld

Eight-conductor EZ-SCREEN LS Basic systems (receivers with 8-pin pigtail QD or flying leads) do not require an external
controller when using the external device monitoring (EDM) function. This function ensures the fault detection capability
required by U.S. Control Reliability and ISO 13849-1 Categories 3 or 4 and PL d or e for controlling final switching devices
(FSDs) or Machine Primary Control Elements (MPCEs).

When

configured with a five-conductor hookup, the EZ-SCREEN LS Basic requires a self-checking safety module, safety
controller, or safety PLC/PES that conforms to the level of performance required by the risk assessment. Examples include
the UM-FA-9A/-11A safety module, SC22-3/-3E or XS/SC26-2 safety controller for applications requiring Control Reliability
and/or ISO 13849-1 Categories 3 or 4 and PL d or e.

flash, and strobe light.

area becomes clear, the OSSD outputs are allowed to turn ON.

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EZ-SCREEN® LS Basic Safety Light Screen

Electrical connections (power, ground, inputs and outputs) are made via unique RD (removable disconnect) cordsets. A
"System" as referred to in this manual, is defined as an emitter and its receiver, plus their cabling.

Available features include selectable scan code via hookup, an auxiliary fault output, a recessed exit window, and robust
metal housing and end-caps for industry leading durability.

Both emitter and receiver feature 7-segment Diagnostic Displays and individual LEDs to provide continuous indication of
operating status, configuration and error conditions. An adhesive Diagnostics label is provided that includes a summary of
the operational and error codes. Active Alignment (Segment) Indicators provide beam block information and easier
installation. See

Status Indicators

on page 49 for more information.

3.1 Appropriate Applications and Limitations

WARNING: Read this Section Carefully Before Installing the System

If all mounting, installation, interfacing, and checkout procedures are not followed properly, the Banner
device cannot provide the protection for which it was designed. The user is responsible for ensuring that
all local, state, and national laws, rules, codes, or regulations relating to the installation and use of this
control system in any particular application are satisfied. Ensure that all legal requirements have been
met and that all technical installation and maintenance instructions contained in this manual are followed.

The user has the sole responsibility to ensure that this Banner device is installed and interfaced to the
guarded machine by Qualified Persons
regulations. Failure to follow these instructions could result in serious injury or death.

The EZ-SCREEN LS Basic ability to perform its safeguarding function depends upon the appropriateness of the application
and upon its proper mechanical and electrical installation and interfacing to the guarded machine. If all mounting,
installation, interfacing, and checkout procedures are not followed properly, the EZ-SCREEN LS Basic cannot provide the
protection for which it was designed.

1

, in accordance with this manual and applicable safety

CAUTION: Install System Only on Appropriate Applications

Banner EZ-SCREEN LS Basic is for use only on machinery that can be stopped immediately after a stop
signal is issued at any point in the machine's stroke or cycle, such as part-revolution clutched machines.
Under no circumstances may the EZ-SCREEN LS Basic be used on full-revolution clutched machinery or
in unsuitable applications as those listed. If there is any doubt about whether or not your machinery is
compatible with the EZ-SCREEN LS Basic, contact Banner Engineering.

3.1.1 Appropriate Applications

EZ-SCREEN LS Basic is typically used for, but is not limited to, the following applications:

•

Automated production equipment

• Robotic work cells

• Molding and power presses

• Assembly and packaging machines

• Lean manufacturing systems

3.1.2 Examples: Inappropriate Applications

Do not use EZ-SCREEN LS Basic in the following applications:

• With any machine that cannot be stopped immediately after a stop signal is issued, such as single-stroke (or full­revolution) clutched machinery

• With any machine with inadequate or inconsistent machine response time and stopping performance

• With any machine that ejects materials or component parts through the defined area

•

In any environment that is likely to adversely affect photoelectric sensing efficiency. For example, corrosive
chemicals or

• As a tripping device to initiate or reinitiate machine motion (PSDI applications), unless the machine and its control
system fully comply with the relevant standard or regulation (see OSHA 29CFR1910.217, ANSI/NFPA 79, ANSI
B11.19, ISO 12100, IEC 60204-1, IEC 61496-1, or other appropriate standard)

fluids or unusually severe levels of smoke or dust, if not controlled, may degrade sensing efficiency

1

A person who, by possession of a recognized degree or certificate of professional training, or who, by extensive knowledge, training and
experience, has successfully demonstrated the ability to solve problems relating to the subject matter and work.

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Defined

Area

Test

RD Cordset

Emitter

Receiver

Status Indicators
visible on sensor face

Euro QD Termination
Pigtail; requires mating QD
cordset for machine
connection

RD cordset with flying leads

Cable pivots as it exits
housing; bends to fit
against perpendicular
surfaces.

R 13 mm [0.5"]
min. bend

EZ-SCREEN® LS Basic Safety Light Screen

If an EZ-SCREEN LS Basic is installed for use as a perimeter guard (where a pass-through hazard may exist, see

or Eliminating Pass-Through Hazards

on page 22), the dangerous machine motion can be initiated by normal means only

Reducing

after the safeguarded area is clear of individuals and the safety related part of the control system that is providing the
latching function has been manually reset.

3.1.3 Control Reliability: Redundancy and Self-Checking

Redundancy requires that EZ-SCREEN LS Basic circuit components be backed up to the extent that, if the failure of a
single component will prevent effective machine stopping action when needed, that component must have a redundant
counterpart which will perform the same function. The EZ-SCREEN LS Basic is designed with redundant microprocessors.

Redundancy must be maintained whenever the EZ-SCREEN LS Basic is in operation. Because a redundant system is no
longer redundant after a component has failed, EZ-SCREEN LS Basic is designed to monitor itself continuously. A
component failure detected by or within the self-checking system causes a stop signal to be sent to the guarded machine
and puts the EZ-SCREEN LS Basic into a Lockout condition.

A recovery from this type of Lockout condition requires:

• Replacement of the failed component (to restore redundancy)

• The appropriate reset procedure

The Diagnostic Display is used to diagnose causes of a Lockout condition. See

Troubleshooting

on page 54.

3.2 Components

3.2.1 Models

An EZ-SCREEN LS Basic “System” refers to a compatible emitter and receiver of equal length and resolution (available in
pairs or separately) and their cordsets. Mounting hardware is ordered separately for each emitter and receiver. Special­purpose mounting brackets are also available. Depending on the connection option, interfacing solutions include IM-T-..
modules, redundant positively guided contactors, safety modules/controllers, and muting modules.

The 13 mm (0.5 in) minimum bend radius for all cordset models accommodates low-clearance installations; cords can exit
to the left, right, or back of the sensor, when mounting. The pigtail QD option is useful for connection to splitter cables or
other QD cordsets.

Figure 1. EZ-SCREEN LS Basic System: Emitter, Receiver, Interconnecting

EZ-SCREEN LS Basic Pair model numbers include the following items:

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Cordsets

Qty Description

1 EZ-SCREEN LS Basic Receiver

1 EZ-SCREEN LS Basic Emitter

Figure 2. EZ-SCREEN LS Basic cordset options

EZ-SCREEN® LS Basic Safety Light Screen

Qty Description

1 Test Rod STP-19 for 23 mm models

1 Literature packet with CD-ROM and Diagnostic Label

Table 1: EZ-SCREEN LS Basic Model Key

Product Family System Type Resolution - Defined Area Termination

Options:

SLLV

Example: SLLVP23-350

Options:

E = Emitter only
R = Receiver only
P = Pair (Emitter

and Receiver)

Options:

23 = 23 mm

- Options:

350 = 350 mm
420 = 420 mm
630 = 630 mm
910 = 910 mm
1050 = 1050 mm
1190 = 1190 mm
1260 = 1260 mm
1330 = 1330 mm
1540 = 1540 mm
1820 = 1820 mm

Options:

Blank = no pigtail, RD
connection

To determine the components required for an EZ-SCREEN LS Basic system using the Model Key:

1.

Choose an Emitter (E), a Receiver (R), or a Pair (P).

2. Choose a

3. Model number(s) can be

4. See

defined area.

Cordsets

verified in the models tables.

on page 58 for mating cordsets:

• Models with RD connection use either RDLS-8..D, DELS-11..E, DELSE-81D, or DELSE-51D

5. See

Accessories

on page 58 for additional cordsets, interfacing solutions, and accessories.

Models Table

Table 2: EZ-SCREEN LS Basic23 mm Resolution Models

Recovery Time, Typ, OSSDs OFF

Emitter Receiver Pair Defined Area

Response Time,

Tr (ms)

Non-sync beam

blocked

SLLVE23-350 SLLVR23-350 SLLVP23-350 350 mm 9.1 36 124

SLLVE23-420 SLLVR23-420 SLLVP23-420 420 mm 9.9 40 135

SLLVE23-630 SLLVR23-630 SLLVP23-630 630 mm 12.5 51 175

SLLVE23-910 SLLVR23-910 SLLVP23-910 910 mm 15.9 67 225

SLLVE23-1050 SLLVR23-1050 SLLVP23-1050 1050 mm 17.5 74 249

SLLVE23-1190 SLLVR23-1190 SLLVP23-1190 1190 mm 19.2 82 274

SLLVE23-1260 SLLVR23-1260 SLLVP23-1260 1260 mm 20.1 86 288

SLLVE23-1330 SLLVR23-1330 SLLVP23-1330 1330 mm 20.9 89 300

SLLVE23-1540 SLLVR23-1540 SLLVP23-1540 1540 mm 23.5 101 339

SLLVE23-1820 SLLVR23-1820 SLLVP23-1820 1820 mm 26.9 116 391

to ON (ms)

All beams

blocked

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EZ-SCREEN® LS Basic Safety Light Screen

3.2.2 Replacement Parts

Model Description

STP-19 23 mm test piece (23 mm resolution systems)

SMA-MBK-1 SSM mirror bracket kit. Includes 2 replacement brackets for one mirror

204120 EZ-SCREEN LS Basic Instruction Manual

89919 CD ROM EZ-SCREEN LS

3.3 Operating Features

The Banner EZ-SCREEN LS Basic models described in this manual feature several functions (depending on model).

3.3.1 Trip Output

The System is configured for Trip Output which allows the System to enter Run mode automatically. Other measures must
be taken to prevent a pass-through hazard; see
warning below for more information.

The OSSD outputs turn ON after power is applied, and the receiver passes its internal self-test/synchronization and
recognizes that all beams are clear. The Trip Output also automatically resets after all beams are cleared.

Reducing or Eliminating Pass-Through Hazards

on page 22 and the

WARNING: Use of Automatic Start/Restart (Trip Output)

Application of power to the Banner device, the clearing of the sensing field, or the reset of an error
condition must not initiate dangerous machine motion. Machine control circuitry must be designed so
that one or more initiation devices must be engaged to start the machine (a conscious act), in addition to
the Banner device entering Run mode. Failure to follow these instructions could result in a serious injury
or death.

3.3.2 External Device Monitoring (EDM)

The External Device Monitoring (EDM) feature allows the EZ-SCREEN LS Basic to monitor the status of external devices,
such as MPCEs. The choices are 1-channel monitoring or no monitoring. EDM is used when the EZ-SCREEN LS Basic
OSSD outputs directly control the MPCEs or other external devices.

This feature is only available with the 8-conductor models.

3.3.3 Fault Output

The current sourcing (PNP) solid-state output (70 mA maximum) is used for control functions that are not safety related; a
typical use is to signal a lockout (fault) to a programmable logic controller (PLC). Available on both the receiver and emitter,
the output provides a fault signal (lockout = On). Interrupting (blocking) the sensing field is not considered a lockout, so the
Fault Output does not change state.

This feature is available only with 8-conductor models.

3.3.4 Scan Code Configuration

Use the scan code to allow operation of multiple pairs of emitters and receivers in close proximity without the effects of
cross-talk. The emitter and receiver may be configured to use one of two scan codes (1 or 2); a receiver recognizes light
only from an emitter with the same scan code. Set the scan code using the wiring on each sensor (see
page 42). The scan code is configured at power-up and remains set until the input is changed and power is cycled. Both
the emitter and its corresponding receiver must have the same setting.

This feature is only available with the 8-conductor models.

Scan Code Select

on

3.3.5 Wiring Options

The Machine Interface connection has several options, including:

•

A 300 mm (1 ft) pigtail cable with an 8-pin M12/Euro-style male quick disconnect (QD) (DELSE-81D)

• A 300 mm (1 ft) pigtail cable with a 5-pin M12/Euro-style male quick disconnect (QD) (DELSE-51D)

• The Removable Disconnect (RD) that can mate with an 8-wire flying lead RD cordset (RDLS-8..D)

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EZ-SCREEN® LS Basic Safety Light Screen

Each connection option is intended for maximum

flexibility to solve unique application requirements such as directly
connecting the EZ-SCREEN LS Basic to remotely located safety I/O blocks. For interfacing modules or remotely located
safety I/O blocks where pin 5 of a 5-pin M12 QD is not earth ground, a 4-pin cordset where pin 5 is not physically present or
is not electrically connected can be used (such as MQDEC-406SS double-ended cordset). In such situations, earth ground
must be provided via the mounting brackets.

Additionally, an EZ-SCREEN LS Basic emitter can be connected either to its own power supply or to the receiver cable,
color-for-color. The color-for-color wiring allows the emitter and receiver positions to be interchanged (swapped) without
rewiring.

Figure 3. 300 mm Pigtail with M12/Euro-style QD Figure 4. RD Connection with 8-wire Flying Lead Cordset

3.3.6 EZ-LIGHT® Indication

For the EZ-SCREEN LS Basic, a CSB-M128..M1281 splitter
cable and optional DEE2R-8..D double-ended cables can be
used with specific models of EZ-LIGHTs at the machine
interface connection. The EZ-LIGHT can be remotely
mounted on the machine frame or another convenient
mounting surface and provides clear, 360° indication of the
EZ-SCREEN LS Basic receiver’s OSSD output status.

Figure 5. EZ-SCREEN LS with M18 EZ-LIGHT

3.3.7 Status Indicators

Status indicators on both the emitter and receiver are visible on each sensor's front panel.

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Status Indicator

Diagnostic Display

Run Mode Indicator

Status Indicator

Diagnostic Display

Alignment Indicator(s)

EZ-SCREEN® LS Basic Safety Light Screen

Emitter

Bi-color red/green Status indicator

—shows whether power is applied, and
whether the emitter is in RUN mode (green) or Lockout condition (flashing
red) .

1-Digit Diagnostic Display

—indicates configuration or specific error

conditions.

Figure 6. Status Indicators—Emitter

Receiver

Bi-color red/green Status indicator

—shows system status:

• outputs are ON or OFF (green ON or red OFF), or

• the System is in Lockout condition

Amber RUN mode indicator

—shows system status:

(flashing red)

• RUN mode (ON), or

• Lockout (OFF)

1-Digit Diagnostic Display

—indicates configuration or specific error

conditions, or the total number of blocked beams.

Bi-color red/green Alignment indicators

—show status of a group of beams

(+/- 35 mm of indicator) along the length of the exit window:

• aligned and clear (green ON), or

• blocked and/or misaligned (red ON),

• fixed

blanked area (flashing green),

Figure 7. Status Indicators—Receiver

• lockout (all OFF), or

• Beam 1 (sync) is blocked (Alignment Indicator 1 is red and all others
are OFF).

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EZ-SCREEN® LS Basic Safety Light Screen

Specifications

4

4.1 General Specifications

Supply Current (mA)

Emitter Receiver

Length Max

350 30 25 115 72

420 30 25 117 74

630 30 25 124 80

910 31 26 134 89

1050 31 26 139 93

1190 31 26 144 97

1260 32 26 146 99

1330 32 26 149 101

1540 32 27 156 108

1820 32 27 166 116

3

Typical Max

3

Supply Voltage at the Device

24 V dc ±15% (use a SELV-rated power supply according to EN IEC

60950).
The external voltage supply must be capable of buffering brief mains
interruptions of 20 ms, as specified in IEC/EN 60204-1.

Residual Ripple

±10% maximum

Short Circuit Protection

All inputs and outputs are protected from short circuits to +24 V dc or
dc common

Electrical Safety Class

III (per IEC 61140: 1997)

Operating Range

0.1m to 8 m (4 in. to 26.2 ft) — Range decreases with use of mirrors
and/or lens shields:

•

Lens shields — approx 10% less range per shield

• Glass-surface mirrors — approx 8% less range per mirror

See the

specific mirror datasheet for more information.

2

Typical

Resolution

23 mm

Effective Aperture Angle (EAA)

Meets Type 4 requirements per IEC 61496-2, Section 5.2.9

Enclosure

Extruded aluminum housing with yellow polyester powder finish
standard and well-sealed, rugged die-cast zinc end caps, acrylic lens
cover

Mounting Hardware

All mounting hardware is ordered separately. Models longer than 910
mm should use an additional center-mount bracket for support.
Mounting brackets are 8-gauge cold-rolled steel, black zinc finish.

Cables and Connections

See

Cordsets

on page 58

Safety Rating

Type 4 per IEC 61496-1, -2
Category 4 PL e per EN ISO13849-1
SIL3 per IEC 61508; SIL CL3 per IEC 62061
PFHd: 1.30 × 10
Proof Test Interval: 20 years

-10

Operating Conditions

–20 °C to +55 °C (–4 °F to +131°F)
95% maximum relative humidity (non-condensing)

Environmental Rating

IEC IP65/IEC IP67

Shock and Vibration

Components have passed vibration and shock tests according to IEC
61496-1. This includes vibration (10 cycles) of 10-55 Hz at 0.35 mm
(0.014 in) single amplitude (0.70 mm peak-to-peak) and shock of 10 g
for 16 milliseconds (6,000 cycles).

Certifications

4.2 Receiver Specifications

Response Time

Dependent on the number of sensing beams; for the response time, see

Models Table

on page 12

EDM Input (Available with 8-Conductor Models)

+24 V dc signals from external device contacts can be monitored (one­channel or no monitoring) via the EDM terminal in the receiver.
High Signal: 10 to 30 V dc at 30 mA typical
Low Signal: 0 to 3 V dc

Recovery Time

Blocked to Clear (OSSDs turn On): Dependent on the number of beams
and whether the first beam (CH 1 synchronization beam) has been
blocked. For specific values, see

2

Supply current exclusive of OSSD1 and OSSD2 loads (up to additional 0.5 A each) and Fault Output load (up to 0.070 A).

3

Maximum current occurs at a supply voltage of 20 V dc.

4

The maximum voltage allowed on the OSSDs in the OFF-state without a lockout occurring. This voltage may occur, for example, from the input structure of a safety relay module
connected to the EZ-SCREEN LS Basic OSSDs.

Models Table

on page 12.

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Output Signal Switching Devices (OSSDs)

Two redundant solid-state 24 V dc, 0.5 A max. sourcing OSSD
(Output Signal Switching Device) safety outputs (Use optional
interface solutions for ac or larger dc loads)
ON-State voltage: > Vin – 1.5 V dc
OFF-State voltage: 0 V dc typical, 1 V dc maximum (no load)
OFF-State, maximum allowed external voltage: 1.5 V dc
Maximum load capacitance: 1.0 µF
Maximum cable resistance to load: 5 ohms per wire
Maximum leakage current: 50 µA (with open 0 V)
OSSD test pulse width: 200 µs typical
OSSD test pulse period: 200 ms typical
Switching current: 0 A minimum; 0.5 A maximum (per OSSD)

4

Fault Output Switching Capacity (Available with 8-Conductor Models)

Current-sourcing (PNP) solid-state output, 24 V dc at 70 mA
maximum

EZ-SCREEN® LS Basic Safety Light Screen

Scan Code Input (Available with 8-Conductor Models)

High Signal: 10 to 30 V dc at 30 mA typical
Low Signal: 0 to 3 V dc
Scan Code Selection: 8-pin/8-wire connection only (5-pin systems are
Scan Code 1)

•

Select Scan Code 1 by connecting pin 8 (violet wire) to 0 V dc or
leaving it open (not connected)

• Select Scan Code 2 by connecting pin 8 (violet wire) to +24 V dc

4.3 Emitter Specifications

Emitter Elements Wavelength

Infrared LEDs, 850 nm at peak emission

Fault Output Switching Capacity

Current-sourcing (PNP) solid-state output, 24 V dc at 70 mA maximum

Position ID Input (Available with 8-Conductor Models)

Input connected to +24 V dc to identify emitter's position as a stand­alone

Status Indicators

One bi-color (Red/Green) Status Indicator: indicates operating mode,
lockout or power Off condition
7-Segment Diagnostic indicator (1 digit): indicates proper operation,
scan code, or error code

Status Indicators

Amber Run Mode Indicator: indicates the System is ready for
operation
Bi-color (red/green) Status indicator: indicates general system and
output status
Bi-color (red/green) Alignment Status indicators: indicate condition
(clear or blocked beam) of a defined group of beams (±35 mm of
indicator)
7-Segment Diagnostic indicator (1 digit): indicates proper operation,
scan code, error code, or total number of blocked beams

Ambient Light Immunity

10,000 lux at 5° angle of incidence

Strobe Light Immunity

Totally immune to one Federal Signal Corp. "Fireball" model FB2PST
strobe

Scan Code Input (Available with 8-Conductor Models)

High Signal: 10 to 30 V dc at 30 mA typical
Low Signal: 0 to 3 V dc
Scan Code Selection: 8-pin/8-wire connection only (5-pin systems are
Scan Code 1)

•

Select Scan Code 1 by connecting pin 8 (violet wire) to 0 V dc
or leaving it open (not connected)

• Select Scan Code 2 by connecting pin 8 (violet wire) to +24 V
dc

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End Brackets Mounted Outward

End Brackets Mounted Inward

EZ-SCREEN® LS Basic Safety Light Screen

4.4 Dimensions

Emitter/Receiver Model Housing Length (L1)

SLL...-350… 355 mm (14.0 in) 397.1 339.1 350

SLL...-420… 425 mm (16.7 in) 466.6 408.6 420

SLL...-630… 634 mm (25.0 in) 676.1 618.1 630

SLL...-910… 914 mm (36.0 in) 955.6 897.6 910

SLL...-1050… 1053 mm (41.5 in) 1095.1 1037.1 1050

5

Nominal measurement

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Hole to Hole Length with

Brackets Out (L2) (mm)

Hole to Hole Length with

Brackets In (L3) (mm)

Defined Area 5 (mm)

EZ-SCREEN® LS Basic Safety Light Screen

Emitter/Receiver Model Housing Length (L1)

SLL...-1190… 1193 mm (47.0 in) 1235.1 1177.1 1190

SLL...-1260… 1263 mm (49.7 in) 1304.6 1246.6 1260

SLL..-1330… 1333 mm (52.5 in) 1374.6 1316.6 1330

SLL...-1540… 1542 mm (60.7 in) 1584.1 1526.1 1540

SLL...-1820… 1821 mm (71.7 in) 1863.1 1805.1 1820

Hole to Hole Length with

Brackets Out (L2) (mm)

Hole to Hole Length with

Brackets In (L3) (mm)

Defined Area 5 (mm)

5

Nominal measurement

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EZ-SCREEN® LS Basic Safety Light Screen

5 Mechanical Installation

The EZ-SCREEN LS Basic system performance as a safety guarding device depends on:

The suitability of the application

•

• The proper mechanical and electrical installation and interfacing to the guarded machine

WARNING: Read this Section Carefully Before Installing the System

If all mounting, installation, interfacing, and checkout procedures are not followed properly, the Banner
device cannot provide the protection for which it was designed. The user is responsible for ensuring that
all local, state, and national laws, rules, codes, or regulations relating to the installation and use of this
control system in any particular application are satisfied. Ensure that all legal requirements have been
met and that all technical installation and maintenance instructions contained in this manual are followed.

The user has the sole responsibility to ensure that this Banner device is installed and interfaced to the
guarded machine by Qualified
regulations. Failure to follow these instructions could result in serious injury or death.

Persons

5.1 Mechanical Installation Considerations

6

, in accordance with this manual and applicable safety

The two primary factors that
Distance (Minimum Distance) (see
safeguarding/eliminating pass-through hazards (see
considerations include:

• Emitter and Receiver Orientation

• Adjacent Reflective Surfaces

•

Use of Corner Mirrors

• Installation of Multiple Systems

WARNING: Position Components Carefully

The emitter and receiver must be positioned such that the hazard cannot be accessed by reaching over,
under, around, or through the sensing field. Additional and supplemental guarding may be required.

influence the layout of the EZ-SCREEN LS Basic system mechanical installation are the Safety

Calculating the Safety Distance (Minimum Distance)

Reducing or Eliminating Pass-Through Hazards

on page 20) and the supplemental

on page 22). Other

5.1.1 Calculating the Safety Distance (Minimum Distance)

Safety Distance (Ds), also called Minimum Distance (S), is the minimum distance required between the defined
closest reachable hazard point. The distance is calculated so that when an object or a person is detected (by blocking a
sensing beam), the EZ-SCREEN LS Basic sends a stop signal to the machine, causing it to stop by the time the object or
person can reach any machine hazard point.

The distance is calculated differently for U.S. and European installations. Both methods take into account several factors,
including a calculated human speed, the total system stopping time (which itself has several components), and the depth
penetration factor. After the distance has been determined, record the calculated distance on the Daily Checkout Card.

WARNING: Safety Distance (Minimum Distance)

The Banner emitters and receivers must be mounted at a distance from the nearest hazard such that an
individual cannot reach the hazard before cessation of hazardous motion or situation. This distance can
be calculated using the formulas in this section, as described by ANSI B11.19 and ISO 13855, and must
be greater than 100 mm (4 in) regardless of calculated value. Failure to establish and maintain the
minimum distance could result in serious injury or death.

area and the

6

A person who, by possession of a recognized degree or certificate of professional training, or who, by extensive knowledge, training and
experience, has successfully demonstrated the ability to solve problems relating to the subject matter and work.

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Hard (fixed) Guarding

Reset Switch

Nearest Hazard Point

Robot

Turn­T

able

Hard (fixed)
Guar

ding

Safety Light Curtain/Screen

EZ-SCREEN® LS Basic Safety Light Screen

Figure 8. Safety distance (minimum distance) and hard (fixed) guarding

Formula and Examples

U.S. Applications European Applications

The Safety (Separation) Distance formula for U.S. applications:

The Minimum Distance formula for European applications:

Ds = K × (Ts + Tr) + Dpf

Ds

the Safety Distance, in inches

K

1600 mm per second (or 63 in per second), the OSHA
29CFR1910.217, and ANSI B11.19 recommended hand-speed
constant (see Note 1 below)

Ts

the overall stop time of the machine (in seconds) from the initial
stop signal to the final ceasing of all motion, including stop times
of all relevant control elements (for example, IM-T-.. Interface
Modules) and measured at maximum machine velocity (see Note 3
below)

Tr

the maximum response time, in seconds, of the EZ-SCREEN LS
Basic emitter/receiver pair (depending on model)

Dpf

the added distance due to the depth penetration factor as
prescribed in OSHA 29CFR1910.217, and ANSI B11.19 for U.S.
applications. See Depth Penetration Factor (Dpf) table below or
calculate using the formula (in mm): Dpf = 3.4 × (S - 7) where S is
the resolution of the light curtain (for S ≤ 63 mm).

Table 3: Depth Penetration Factor (Dpf)

23 mm System

54 mm (2.14 in)

S = (K × T) + C

S

the Minimum Distance, in mm, from danger zone to light screen
center line

K

hand-speed constant (see Note 2 below); 2000 mm/s (for Minimum
Distances < 500 mm) 1600 mm/s (for Minimum Distances > 500
mm)

T

the overall machine stopping response time (in seconds), from the
physical initiation of the safety device and the machine coming to
a stop (or the hazard removed). This can be broken down into two
parts: Ts and Tr where T = Ts + Tr

C

the additional distance, in mm, based on intrusion of a hand or
object towards the danger zone prior to actuation of a safety
device. Calculate using the formula (in mm):

C = 8 × (d - 14)

where d is the resolution of the light curtain (for d ≤ 40 mm).

Table 4: Intrusion Factor (C)

23 mm System

72 mm (2.8 in)

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EZ-SCREEN® LS Basic Safety Light Screen

Notes:

The OSHA-recommended hand speed constant K has been determined by various studies and, although

1.
these studies indicate speeds of 1600 mm/sec. (63 in/sec.) to more than 2500 mm/sec. (100 in/sec.), they
are not conclusive determinations. Consider all factors, including the physical ability of the operator, when
determining the value of K to be used.

2. The recommended hand speed constant K, derived from data on approach speeds of the body or parts of
the body as stated in ISO 13855.

3. Ts is usually measured by a stop-time measuring device. If the machine manufacturer's specified stop time
is used, at least 20% should be added to allow for possible clutch/ brake system deterioration. This
measurement must take into account the slower of the two MPCE channels, and the response time of all
devices or controls that react to stop the machine.

US Application example: Model SLLVP23-560

K = 63 in per second

Ts = 0.32 (0.250 seconds is specified by the machine manufacturer; plus
20% safety factor; plus 20 ms interface module IM-T-9A response)

Tr = 0.0116 second (the specified SLLVP23-560 response time)

Dpf = 2.14 in (for 23 mm resolution)

Ds = 63 × (0.32 + 0.0116) + 2.14 = 23 in

Mount the EZ-SCREEN LS Basic emitter and receiver so that no part of
the defined area is closer than 23 inches to the closest reachable hazard
point on the guarded machine.

WARNING: Determine Correct Stop Time

European Application example: Model SLLVP23-560

K = 1600 mm per second

T = 0.3316 (0.250 seconds is specified by the machine manufacturer;
plus 20% safety factor; plus 20 ms interface module IM-T-9A response),
plus 0.0116 seconds (the specified SLLVP23-560 response time)

C = 8 × (23 - 14) = 72 mm (for 23 mm resolution)

S = (1600 × 0.3316) + 72 = 603 mm

Mount the EZ-SCREEN LS Basic emitter and receiver so that no part of
the defined area will be closer than 602 mm to the closest reachable
hazard point on the guarded machine.

Stop time (Ts) must include the response time of all devices or controls that react to stop the machine. If
all devices are not included, the calculated safety distance (Ds or S) will be too short. Failure to follow
these instructions could result in serious injury or death. Be sure to include the stop time of all relevant
devices and controls in your calculations.

If required, each of the two Machine Primary Control Elements (MPCE1 and MPCE2) must be capable of
immediately stopping the dangerous machine motion, regardless of the state of the other. These two
channels of machine control need not be identical, but the stop time performance of the machine (Ts,
used to calculate the safety distance) must take into account the slower of the two channels.

5.1.2 Reducing or Eliminating Pass-Through Hazards

A

pass-through

SCREEN LS Basic Safety Light Screen (which issues a stop command to remove the hazard), and then continues into the
guarded area. This is common in access and perimeter guarding applications. Subsequently, their presence is no longer
detected, and the related danger becomes the unexpected start or restart of the machine while personnel are within the
guarded area.

In the use of light screens, a pass-through hazard typically results from large safety distances calculated from long stopping
times, large minimum object sensitivities, reach-over, reach-through, or other installation considerations. A pass-through
hazard can be generated with as little as 75 mm (3 in) between the sensing field and the machine frame or hard (fixed)
guarding.

Eliminate or reduce pass-through hazards whenever possible. While it is recommended to eliminate the pass-through
hazard altogether, this may not be possible due to machine layout, machine capabilities, or other application
considerations.

One solution is to ensure that personnel are continually sensed while within the hazardous area. This can be accomplished
by using supplemental safeguarding, such as described by the safety requirements in ANSI B11.19 or other appropriate
standards.

An alternative method is to ensure that once the safeguarding device is tripped it will latch and will require a deliberate
manual action to reset. This method of safeguarding relies upon the location of the reset switch as well as safe work
practices and procedures to prevent an unexpected start or restart of the guarded machine. The EZ-SCREEN LS Basic
Safety Light Screen provides a configurable Manual Start/Restart (Latch Output) function for these applications.

hazard is associated with applications where personnel may pass through a safeguard, such as the EZ-

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Hard (fixed) Guarding

Reset Switch

Conveyor

Opening

Area

Guar

ding

Robot

Turn­T

able

Hard (fixed)
Guar

ding

Area

Guar

ding

Safety Light Curtain/Screen

EZ-SCREEN® LS Basic Safety Light Screen

WARNING: Use of the Banner device for Access or Perimeter Guarding

If a Banner device is installed in an application that results in a pass-through hazard (for example,
perimeter guarding), either the Banner device or the Machine Primary Control Elements (MPCEs) of the
guarded machine must cause a Latched response following an interruption of the defined area.

The reset of this Latched condition may only be achieved by actuating a reset switch that is separate
from the normal means of machine cycle initiation.

Lockout/Tagout procedures per ANSI Z244.1 may be required, or additional safeguarding, as described
by ANSI B11.19 safety requirements or other appropriate standards, must be used if a passthrough
hazard cannot be eliminated or reduced to an acceptable level of risk. Failure to follow these instructions
could result in serious injury or death.

5.1.3 Supplemental Safeguarding

As described in

Distance)

Calculating the Safety Distance (Minimum

on page 20, the EZ-SCREEN LS Basic must be
properly positioned such that an individual cannot reach
through the defined area and access the hazard point
before the machine has stopped.

Additionally, the hazard cannot be accessible by reaching
around, under, or over the defined area. To accomplish this,
supplemental guarding (mechanical barriers, such as
screens or bars), as described by ANSI B11.19 safety
requirements or other appropriate standards, must be
installed. Access will then be possible only through the
defined area of the EZ-SCREEN LS Basic System or
through other safeguarding that prevents access to the
hazard (see

Figure 9

on page 23).

The mechanical barriers used for this purpose are typically
called "hard

(fixed) guarding"; there must be no gaps
between the hard (fixed) guarding and the defined area. Any
openings in the hard (fixed) guarding must comply with the
safe opening requirements of ANSI B11.19 or other
appropriate standard.

Figure 9

on page 23 shows an example of supplemental safeguarding inside a robotic work cell. The EZ-SCREEN LS Basic,

Figure 9. An example of supplemental safeguarding

in conjunction with the hard (fixed) guarding, is the primary safeguard. Supplemental safeguarding (such as a horizontal­mounted safety light screen as an area guard) is required in areas that cannot be viewed from the reset switch (for example,
behind the robot and the conveyor). Additional supplemental safeguarding may be required to prevent clearance or trapping
hazards (for example, a safety mat as an area guard between the robot, the turntable, and the conveyor).

WARNING: The Hazard Must Be Accessible Only through the Sensing Field

The installation of the EZ-SCREEN LS Basic must prevent any individual from reaching around, under,
over or through the sensing field and into the hazard without being detected. Mechanical barriers (for
example, hard (fixed) guarding) or supplemental safeguarding may be required to comply with this
requirement, and is described by ANSI B11.19 safety requirements or other appropriate standards.
Failure to follow these instructions could result in serious injury or death.

5.1.4 Reset Switch Location

The EZ-SCREEN LS Basic has a trip output (auto power-up and automatic reset) that turns the OSSD outputs ON when the

defined

condition or after an interruption has cleared the defined area might be required. The latch function can be provided by
interfacing the EZ-SCREEN LS Basic OSSD outputs to the machine's safety-related control system, a safety controller

area is unobstructed (clear). Per application requirements, a latch response requiring a manual reset to a power-up

(such as SC22-3 or XS/SC26-2), or safety module (such as the UM-FA-9A/11A).
The system or device providing the latch/reset function must conform to the level of performance required by the risk

assessment. In applications requiring Control Reliability and/or ISO 13849-1 Categories 3 or 4 and PL d or e, it is
recommended that a monitored manual reset (for example, open-closed-open action), such that a shorted or tied-down
button cannot cause a reset be used.

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