Wenglor SB4-I User manual

Original operating instructions
Available as PDF version only
Status: 22.05.2019
Version: 10
www.wenglor.com
EN
SB4-I
Safety Light Array
Operating instructions

EN
2
Table of Contents
1. Introduction......................................................................................................... 4
1.1 General Information Regarding this Document ....................................................................... 4
1.2 Function and Use for Intended Purpose .................................................................................. 4
1.3 Brief Explanation of Function- and Operating Modes............................................................... 4
1.4 Explanation of symbols ............................................................................................................ 5
2. Description of the Safety Device........................................................................ 6
2.1 General ..................................................................................................................................... 6
2.2 Features ................................................................................................................................... 6
2.3 Layout ........................................................................................................................................ 7
2.4 Control and Display Elements................................................................................................... 7
2.5 Applications Examples .............................................................................................................. 8
3. Instructions for Use and Safety Precautions .................................................... 9
3.1 General Instructions for Use and Safety Precautions ............................................................... 9
3.2 Securing the Danger Zone ...................................................................................................... 10
3.3 Calculating Safety Clearance .................................................................................................. 10
3.4 Minimum Clearance to Reflective Surfaces............................................................................. 12
3.5 Avoidance of Reciprocal Influence Amongst Several Light Barrier Systems ......................... 13
4. Connection and Installation to the Machine ................................................... 14
4.1 Installation................................................................................................................................ 14
4.2 Connection to the Machine .................................................................................................... 15
4.3 Default Settings........................................................................................................................ 16
5. Light Array Operation ....................................................................................... 17
5.1 Settings .................................................................................................................................... 17
5.1.1 Using the Aligning Tool RF................................................................................................ 17
5.1.2 Using the SZ0-LAH1 Aligning Tool.................................................................................... 18
5.1.3 Adjustment Procedure ..................................................................................................... 18
5.2 Function Modes ...................................................................................................................... 19
5.2.1 Safety Operating Mode .................................................................................................... 19
5.2.2 Restart Inhibit and start-up inhibit..................................................................................... 20
5.2.3 Contactor Monitoring ........................................................................................................ 23
5.3 Functions ................................................................................................................................. 26
5.3.1 Fix Blanking....................................................................................................................... 26
5.3.0.2 Principle ...................................................................................................................... 26
5.3.0.3 Fix Blanking Procedure .............................................................................................. 29
5.3.0.4 Calculating Safety Clearance ..................................................................................... 30
5.3.5 Reduced Resolution.......................................................................................................... 30
5.3.0.6 Principle ...................................................................................................................... 30
5.3.0.7 Reduced Resolution Procedure ................................................................................. 32
5.3.0.8 Calculating Safety Clearance ..................................................................................... 33
5.4 Cascading................................................................................................................................ 33
5.4.1 Principle............................................................................................................................. 33
5.4.2 Cascading Procedure ....................................................................................................... 34
5.4.3 Functions........................................................................................................................... 36
5.4.4 Coding............................................................................................................................... 37
Table of Contents

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Safety Light Array
6. Expanding the Light Array System .................................................................. 38
6.1 Relay Unit................................................................................................................................. 38
6.2 Muting Module......................................................................................................................... 39
6.3 Connection to a PC.................................................................................................................. 40
6.4 Deflection Mirrors..................................................................................................................... 41
7. Display............................................................................................................... 42
7.1 Display of Operating Modes.................................................................................................... 42
7.2 Diagnostic information............................................................................................................. 43
8. Condensed Start-Up Instructions .................................................................... 44
9. Inspection Instructions..................................................................................... 45
9.1 Inspection Prior to Initial Start-Up............................................................................................ 45
9.2 Daily Inspection and Maintenance of the Effectiveness of the Safety Device ........................ 45
10. Environmentally Sound Disposal..................................................................... 46
11. Dimensions and Weights.................................................................................. 47
11.1 SB4-50IE050C1/SB4-50IS050C1............................................................................................. 47
11.2 SB4-40IE080C1/SB4-40IS080C1............................................................................................. 48
11.3 SB4-30IE090C1/SB4-30IS090C1............................................................................................. 49
11.4 Mounting Bracket BEF-SET-33 ............................................................................................... 50
12. Technical Data................................................................................................... 51
12.1 Safety Light Array..................................................................................................................... 51
12.2 System Components ............................................................................................................... 52
12.2.1 Relay Unit SG4-00VA000R2.............................................................................................. 52
12.2.2 Adapter Box A485-232 ...................................................................................................... 52
12.2.3 Laser Alignment Aid SZ0-LAH1 ........................................................................................ 52
12.2.4 Mounting Elements ........................................................................................................... 52
12.2.5 Connection Line ................................................................................................................ 53
12.2.6 Connection Cables............................................................................................................ 53
12.2.7 Interface Cable .................................................................................................................. 53
13. Checklist ........................................................................................................... 54
14. Certification....................................................................................................... 55
15. EU Declaration of Conformity .......................................................................... 56

EN
4 Introduction
1. Introduction
1.1 General Information Regarding this Document
This document is intended to serve as a set of operating instructions for personnel which has been authorized and
commissioned by the machine manufacturer or operating company to connect the safety device, integrate it into
the machine, start it up, configure it and maintain it in accordance with the specified stipulations.
Due to the fact that they describe the operation of a safety device, these operating instructions are of a binding
nature.
The wenglor safety device with the designation “Light Array” is described in these operating instructions.
1.2 Function and Use for Intended Purpose
The light curtain monitors the safety field between the transmitter and the receiver. If the safety field is penetrated
by an obstruction, a switching command is triggered. This switching command may prevent initialization of a haz-
ardous machine motion, or may stop an action which has already been started.
Use of the light curtain is only permissible if:
• Hazardous motion can be stopped by electrical means using the light curtain’s safety output
• Adequate detection of possible obstruction is assured with existing resolution
1.3 Brief Explanation of Function- and Operating Modes
Cascading
Safety devices can be series connected such that they all drive a single safety output in order to monitor several
safety fields simultaneously. Cascaded safety devices demonstrate the same performance characteristics as a
single safety device.
Contactor Monitoring
An operating mode for which switching performance of the contacts at an external relay is dynamically monitored.
The contacts must close fully within a specified period of time.
Fix Blanking
This operating mode is required for applications including objects which continuously protrude into the safety
field, thus interrupting specific light beams originating from the safety light curtain. Intrusions into any other point
within the safety field cause the output to switch and stop hazardous motion.
Reduced Resolution
This function reduces the resolution electronically. Thus objects that are smaller than the selected resolution don’t
deactivate the safety output. The function can also be used to prevent machining chips from interfering with cor-
rect functioning of the Safety Light Array.
Restart Inhibit
A function which prevents a machine from starting up automatically after it has been switched on. The machine
can only be enabled by activating an acknowledgement key.
Safety Operating Mode
In this operating mode, the switching outputs are disabled when the safety field is penetrated. The switching out-
puts are automatically enabled after penetration of the safety field is ended.
Safety Output – OSSD (Output Signal Switching Device)
The output of the contactless safety device which is connected to the machine controls. The safety output is deac-
tivated when the safety field is interrupted.
Signal Output
A semiconductor output for auxiliary functions without safety monitoring.

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Safety Light Array
Start-Up Inhibit
This function is activated along with the „Restart Inhibit Function“. When power supply is switched on (e.g. after a
power failure), the safety outputs (OSSD) remain in the off state. Acknowledgement is accomplished by activating
an acknowledgment key.
1.4 Explanation of symbols
NOTE!
A note draws attention to useful tips and suggestions, as well as information
regarding efficient, error-free use.
DANGER!
This word indicates a hazard with a high degree of risk which, if not avoided,
results in death or severe injury.

EN
6 Description of the Safety Device
2. Description of the Safety Device
2.1 General
The light curtain monitors the safety field between the transmitter and the receiver. If the safety field is penetrated
by an obstruction, a switching command is triggered. This switching command may prevent initialization of a
hazardous machine motion, or may stop an action which has already been started.
Use of the light curtain is only permissible if:
• Hazardous motion can be stopped by electrical means using the light curtain’s safety output
• Adequate detection of possible obstruction is assured with existing number of beams and selected beam
clearance.
• Use of a type 4 light barrier is permissible
2.2 Features
• Safety device per EN 61496-1
• TÜV approval
• Body protection with a beam clearance of 300, 400 or 500 mm
• Visible red light
• PNP semiconductor safety outputs
• PNP signal output
• Fix Blanking
• Electronically reduced resolution
• Simple cascading
• Serial interface with visualization program
• Restart inhibit
• Monitoring of external relays
• Muting (optional)
• Relay unit (optional)
• Coding Controls Controls
Displays Displays
OSSDs
Supply Voltage 24 V Slave
Supply Voltage 24 V Slave Slave Input 1 Slave Input 2
Supply Voltage 24 V
Supply Voltage 24 V
OSSD 1
OSSD21
Acknowledgement Input
Contactor Monitoring
Emitter Receiver

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Safety Light Array
2.3 Layout
Receiver
Emitter
Display Element
Individual Beam
Spacer Plate Beam Distance
Beam
Consists of 9 individual beams
2.4 Control and Display Elements
Receiver
Display Element Function
8) Serial Communication
7) Timing
6) Cascading
5) Reduced Resolution
3) Fix Blanking
2) Contactor Monitoring
1) Restart Inhibit
8)Serial Communication
7)Timing
6)Cascading
5)Reduced Resolution
3)Fix Blanking
2)Contactor Monitoring
1)Restart Inhibit
Display 2 Display 1
Blanking
Alignment (YE) Failure (RD)
OSSD off (RD) OSSD on (GN)
Enter Button
Dip-Switch S1
Alignment-/Blanking LED (YE) Alignment/
fix blanking display
Failure-LED (RD) Error display
OSSD off (RD) OSSD status display
OSSD on (GN) OSSD status display
Display 1 Display of the selected function or
operating mode
Display 2 Display of the selected function
or operating mode
Dip-Switch Selection of functions and
operating modes
Enter Button Acknowledgment of a selection
Emitter
Display Element Function
Failure (RD)
Enter Button
Normal
Operation (GN)
Failure-LED (RD) Error display
Normal Operation (GN) Power supply indicator
Enter Button Acknowledgment of a selection

EN
8 Description of the Safety Device
2.5 Applications Examples
Safety protection at:
• Presses
• Saws
• Textile machinery
• Transfer lines, assembly lines
• Packaging machines
• Woodworking machines
1st example: restricting access and securing specific areas
Danger Zone
Emitter Receiver
Top View Side View
2nd example: use with path-folding mirrors
Danger Zone
Emitter
Receiver
Deflection Mirror
Top View Side View

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Safety Light Array
3. Instructions for Use and Safety Precautions
3.1 General Instructions for Use and Safety Precautions
Observe the following points in order to assure safe use of the Safety Light Array for its intended purpose.
Applicable national and international requirements apply to installation and use of the Safety Light Curtain, as well
as to initial start-up and periodic technical testing, in particular:
• EN standards
• Accident prevention regulations
• Occupational health and safety requirements
• EU machinery directive
The manufacturer of, and the company who operates the machine at which the Safety Light Curtain is used must,
on their own initiative, agree upon and adhere to all applicable safety regulations and rules in cooperation with the
responsible authorities. It is absolutely essential to adhere to all directions included in these operating instructions,
in particular the inspection procedures.
Contactless safety devices may only be used at power operated machinery whose controls can be electrically
influenced such that hazardous motion can be stopped immediately in all operating phases.
Additional measures may be necessary in order to assure that the ESPE does not malfunction or fail in a danger-
ous fashion due to other types of light which are used in the respective application (e.g. resulting from the use of
cordless controllers on cranes, emission due to welding sparks or the effects of stroboscope light).
Testing must be performed by an expert prior to initial start-up of the ESPE. Testing must establish flawless
interaction of the ESPE together with the controls of the power operated machinery, and correct installation in
accordance with these safety precautions.
Testing must be conducted by qualified persons, or persons who have been authorized and engaged specifically
to this end, and must be documented in a fashion which can be readily retraced at any point in time.
The cascading terminals on the sensor and the receiver may only be used to connect additional Light Arrays.
Connection of other power consumers is impermissible.
Changes to device configurations may impair the respective devices’ protective functions. For this reason, the
effectiveness of the safety device must be retested each time its configuration is changed. The person who makes
the change is also responsible for assuring that the safety function of the device is maintained.
The operating instructions must be made available to the operator of the machine at which the Safety Light Array
is used. The machine operator must received instruction from qualified persons, and must be required to read the
operating instructions.

EN
10 Instructions for Use and Safety Precautions
The following standards must be observed during use of the light curtain:
EN ISO 13855 Machine safety: arrangement of safety devices in consideration of approach
speeds of body parts
EN ISO 12100 Machine safety: General design guidelines – risk assessment and risk minimization
EN ISO 13857 Machine safety: Safety distances to prevent hazard zones being reached by
upper and lower limbs
EN 349 Machine safety: Minimum gaps to avoid crushing of parts of the human body
EN ISO 13850 Machine safety: emergency stop devices
EN ISO 14119 Machine safety: Interlocking devices associated with guards
All specified data make reference to the following revision level: 22.05.2019
Technical changes to the product described herein, printing errors and/or any possible incompleteness of this
product description may not be construed as cause for asserting any legal claims whatsoever against wenglor
sensoric GmbH.
3.2 Securing the Danger Zone
The danger zone must be secured by means of the light curtain alone, or by means of the light curtain in combi-
nation with additional mechanical safety devices. Walking around the safety field at the side, as well as stepping
over and/or under the safety field must be prevented in any case. It must be impossible to approach the point of
danger without passing through the safety field.
The safety field is located between the line at which light is emitted at the emitter and the line at which light is
received at the receiver. The boundaries of the safety field are obvious on the devices.
3.3 Calculating Safety Clearance
Calculation of safety clearance S is based upon the EN ISO 13855 standard. However, if any special directives
and standards apply to the respective machine, these must be taken into consideration as well. Each contactless
safety device must be mounted such that stepping or reaching into the danger zone is precluded. If required, this
may also be accomplished by means of additional, mechanical safety devices.
Safety clearance S is the minimum distance in mm, measured from the danger zone to the safety field, and is
calculated per EN ISO 13855 as follows:
S [mm] = ( K [mm/s] × T [s] ) + C [mm]
S = minimum clearance in mm, measured from the danger zone to the safety field
K = approach speed in mm per second
T = t1+t2 = total response time in seconds
t1 = safety device response time in seconds
t2 = machine or process over-travel time in seconds
C = additional clearance depending upon beam clearance/resolution in mm