SICK microScan3 - EFI-pro User manual

OPERATING INSTRUCTIONS
microScan3
Safety laser scanner

Described product
microScan3
Manufacturer
SICK AG
Erwin-Sick-Str. 1
79183 Waldkirch
Germany
Legal information
This work is protected by copyright. Any rights derived from the copyright shall be
reserved for SICK AG. Reproduction of this document or parts of this document is only
permissible within the limits of the legal determination of Copyright Law. Any modifica‐
tion, abridgment or translation of this document is prohibited without the express writ‐
ten permission of SICK AG.
The trademarks stated in this document are the property of their respective owner.
© SICK AG. All rights reserved.
Original document
This document is an original document of SICK AG.
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Contents
1 About this document........................................................................ 7
1.1 Function of this document....................................................................... 7
1.2 Scope......................................................................................................... 7
1.3 Target groups and structure of these operating instructions................ 7
1.4 Further information................................................................................... 8
1.5 Symbols and document conventions...................................................... 8
2 Safety information............................................................................ 9
2.1 General safety notes................................................................................. 9
2.2 Correct use................................................................................................ 10
2.3 Requirements for personnel qualifications............................................. 10
3 Product description........................................................................... 12
3.1 Setup and function................................................................................... 12
3.2 Product characteristics............................................................................. 14
3.2.1 Device overview....................................................................... 14
3.2.2 Variants.................................................................................... 15
3.2.3 Status indicators...................................................................... 15
3.2.4 Connections............................................................................. 16
3.2.5 System plug.............................................................................. 17
3.2.6 Field types................................................................................ 17
3.2.7 Field set.................................................................................... 19
3.2.8 Monitoring case....................................................................... 20
3.3 Example applications............................................................................... 21
4 Project planning................................................................................ 24
4.1 Manufacturer of the machine.................................................................. 24
4.2 Operator of the machine.......................................................................... 24
4.3 Assembly................................................................................................... 24
4.3.1 Protection against interference from systems in close prox‐
imity to each other................................................................... 26
4.3.2 Preventing unprotected areas................................................. 27
4.3.3 Response time of the safety laser scanner........................... 29
4.3.4 Reference contour monitoring................................................ 29
4.3.5 Monitoring case switching time.............................................. 31
4.3.6 Hazardous area protection...................................................... 33
4.3.7 Hazardous point protection..................................................... 39
4.3.8 Access protection..................................................................... 42
4.3.9 Mobile hazardous area protection.......................................... 44
4.4 Integration in the electrical control......................................................... 50
4.4.1 Power supply............................................................................ 51
4.4.2 USB connection....................................................................... 52
4.4.3 OSSDs....................................................................................... 52
4.4.4 Control inputs........................................................................... 53
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4.4.5 Universal inputs, universal outputs, universal I/Os.............. 54
4.4.6 Restart interlock...................................................................... 55
4.4.7 External device monitoring (EDM).......................................... 58
4.4.8 Connection diagrams.............................................................. 58
4.5 Testing plan............................................................................................... 59
4.5.1 Minimum requirements for the regular thorough check....... 60
4.5.2 Recommendations for further thorough checks................... 60
4.5.3 Carrying out thorough checks................................................. 60
5 Mounting............................................................................................. 63
5.1 Safety......................................................................................................... 63
5.2 Unpacking.................................................................................................. 63
5.3 Mounting procedure................................................................................. 63
5.3.1 Direct mounting....................................................................... 65
5.3.2 Mounting using mounting kit 1............................................... 66
5.3.3 Mounting using mounting kit 2............................................... 66
6 Electrical installation........................................................................ 69
6.1 Safety......................................................................................................... 69
6.2 Connection overview................................................................................ 70
6.2.1 microScan3 Core..................................................................... 71
6.3 Pin assignment......................................................................................... 71
6.3.1 Connecting cable with M12 plug connector.......................... 71
7 Configuration..................................................................................... 73
7.1 General requirements.............................................................................. 73
7.1.1 Delivery state........................................................................... 73
7.2 Safety Designer......................................................................................... 73
7.2.1 Installation assistant............................................................... 73
7.2.2 Projects..................................................................................... 73
7.2.3 User interface.......................................................................... 74
7.2.4 User groups.............................................................................. 74
7.2.5 Opening the device window – configuring devices................ 75
7.3 Overview.................................................................................................... 75
7.4 Identification............................................................................................. 77
7.5 Application................................................................................................ 79
7.6 Monitoring plane....................................................................................... 81
7.6.1 Parameters for the monitoring plane..................................... 81
7.6.2 Parameters for the safety laser scanner................................ 83
7.7 Reference contour field............................................................................ 84
7.8 Fields......................................................................................................... 86
7.8.1 Using the field editor............................................................... 87
7.8.2 Creating field-set templates.................................................... 90
7.8.3 Background image................................................................... 91
7.8.4 Settings for the field editor..................................................... 91
7.8.5 Editing fields using coordinates.............................................. 92
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7.8.6 Drawing in points that cannot be monitored......................... 92
7.9 Inputs and outputs, local......................................................................... 93
7.9.1 Further settings for some signals........................................... 95
7.10 Monitoring cases...................................................................................... 96
7.10.1 Settings for monitoring case tables........................................ 97
7.10.2 Settings for monitoring cases................................................. 97
7.10.3 Input conditions....................................................................... 97
7.10.4 Cut-off paths............................................................................ 97
7.10.5 Assigning field sets.................................................................. 98
7.11 Simulation................................................................................................. 98
7.12 Transfer..................................................................................................... 100
7.13 Starting and stopping safety function..................................................... 101
7.14 Reports...................................................................................................... 101
7.15 Service....................................................................................................... 102
7.15.1 Device restart........................................................................... 102
7.15.2 Factory settings........................................................................ 103
7.15.3 Managing passwords............................................................... 103
7.15.4 Optics cover calibration........................................................... 104
8 Commissioning.................................................................................. 105
8.1 Safety......................................................................................................... 105
8.2 Alignment.................................................................................................. 105
8.3 Switching on.............................................................................................. 106
8.4 Thorough check........................................................................................ 107
9 Operation............................................................................................ 109
9.1 Safety......................................................................................................... 109
9.2 Regular thorough check........................................................................... 109
9.3 LEDs........................................................................................................... 109
9.4 Buttons and display.................................................................................. 110
10 Maintenance...................................................................................... 114
10.1 Safety......................................................................................................... 114
10.2 Regular cleaning....................................................................................... 114
10.3 Replacing the optics cover....................................................................... 115
10.4 Replacing the safety laser scanner......................................................... 117
10.4.1 Replacing the safety laser scanner without system plug...... 118
10.4.2 Completely replacing the safety laser scanner...................... 118
10.5 Replacing the system plug....................................................................... 119
10.6 Regular thorough check........................................................................... 120
11 Troubleshooting................................................................................. 121
11.1 Safety......................................................................................................... 121
11.2 Diagnostic LEDs........................................................................................ 121
11.2.1 Status LEDs.............................................................................. 121
11.3 Diagnostics using the display.................................................................. 122
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11.3.1 Status display........................................................................... 122
11.3.2 Detailed diagnostics................................................................ 124
11.3.3 Fault display............................................................................. 125
11.4 Diagnostics using Safety Designer.......................................................... 128
11.4.1 Data recorder........................................................................... 128
11.4.2 Message history....................................................................... 130
12 Decommissioning............................................................................. 131
12.1 Protection of the environment................................................................. 131
12.2 Disposal..................................................................................................... 131
13 Technical data.................................................................................... 132
13.1 Variant overview........................................................................................ 132
13.2 Data sheet................................................................................................. 132
13.2.1 microScan3 Core..................................................................... 132
13.3 Response times........................................................................................ 137
13.4 Course of the OSSD test over time.......................................................... 138
13.5 Sensing range........................................................................................... 139
13.6 Dimensional drawings.............................................................................. 141
14 Ordering information........................................................................ 142
14.1 Scope of delivery...................................................................................... 142
14.2 microScan3 ordering information............................................................ 142
15 Spare parts......................................................................................... 143
15.1 microScan3 without system plug............................................................ 143
15.2 System plug............................................................................................... 143
15.3 Additional spare parts.............................................................................. 143
16 Accessories........................................................................................ 144
16.1 Brackets.................................................................................................... 144
16.2 Connection technology............................................................................. 146
16.3 Alignment aid............................................................................................ 146
16.4 Cleaning agent.......................................................................................... 146
17 Glossary.............................................................................................. 147
18 Annex.................................................................................................. 151
18.1 Compliance with EU directives................................................................. 151
18.2 Checklist for initial commissioning and commissioning........................ 152
18.3 Mounting methods for protection from interference from systems in
close proximity.......................................................................................... 153
19 List of figures..................................................................................... 156
20 List of tables....................................................................................... 158
CONTENTS
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1 About this document
1.1 Function of this document
These operating instructions contain the information needed during the life cycle of the
safety laser scanner.
Operating instructions of the safety laser scanner must be made available to all people
who work with the device.
Read the operating instructions carefully and ensure that you have understood the con‐
tents completely before you work with the safety laser scanner.
1.2 Scope
The operating instructions, having the part number 8016344, only apply to the micro‐
Scan3 safety laser scanner.
The operating instructions, SICK part number 8016344, are included (all available lan‐
guage versions of the operating instructions).
1.3 Target groups and structure of these operating instructions
These operating instructions are intended for the following target groups: project devel‐
opers (planners, developers, designers), installers, electricians, safety experts (such as
CE authorized representatives, compliance officers, people who test and approve the
application), operators, and maintenance personnel.
The structure of these operating instructions is based on the life cycle phases of the
safety laser scanner: project planning, mounting, electrical installation, configuration,
commissioning, operation, and maintenance.
In many applications, the target groups consist of the manufacturer and the operator of
the machine in which the safety laser scanner is integrated:
Area of responsibility Target group Special chapters of these operating instruc‐
tions 1
Manufacturer Project developers
(planners, developers,
designers)
Project planning, page 24
Configuration, page 73
Technical data, page 132
Accessories, page 144
Installers Mounting, page 63
Electricians Electrical installation, page 69
Safety experts Project planning, page 24
Configuration, page 73
Commissioning, page 105
Technical data, page 132
Checklist for initial commissioning and com‐
missioning, page 152
User Operator Operation, page 109
Troubleshooting, page 121
Maintenance person‐
nel
Maintenance, page 114
Troubleshooting, page 121
Accessories, page 144
1Chapters not listed here are intended for all target groups. All target groups must understand the safety
information in all of the operating instructions!
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In other applications, the operating organization is also the manufacturer of the equip‐
ment with the corresponding allocation of the target groups.
1.4 Further information
www.sick.com
The following information is available via the Internet:
•Further language versions of these operating instructions
•Data sheets and application examples
•CAD data for drawings and dimensional drawings
•Certificates (such as the EU declaration of conformity)
•Guide for Safe Machinery (six steps to a safe machine)
•Safety Designer (software for configuring the safety laser scanner and further
safety solutions)
1.5 Symbols and document conventions
The following symbols and conventions are used in this document:
Safety notes and other notes
DANGER
Indicates a situation presenting imminent danger, which will lead to death or serious
injuries if not prevented.
WARNING
Indicates a situation presenting possible danger, which may lead to death or serious
injuries if not prevented.
CAUTION
Indicates a situation presenting possible danger, which may lead to moderate or minor
injuries if not prevented.
NOTICE
Indicates a situation presenting possible danger, which may lead to property damage if
not prevented.
NOTE
Indicates useful tips and recommendations.
Instructions to action
bThe arrow denotes instructions to action.
1. The sequence of instructions for action is numbered.
2. Follow the order in which the numbered instructions are given.
LED symbols
These symbols indicate the status of an LED:
The LED is off.
The LED is flashing.
The LED is illuminated continuously.
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2 Safety information
2.1 General safety notes
This chapter contains general safety information about the safety laser scanner.
Further information about specific product use situations can be found in the relevant
chapters.
DANGER
Hazard due to lack of effectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
bRead this document carefully and ensure that you have fully understood the con‐
tents before you work with the device.
bPay particular attention to all safety notes in this document.
WARNING
Invisible laser radiation
Laser class 1M
IEC 60825-1:2007 & 2014
Complies with 21 CFR
1040.10 and 1040.11
except for deviations
pursuant to Laser Notice
No. 50, June 2007
CAUTION
LASER
1M
Figure 1: Laser class 1M
This device complies with the following standards:
•IEC 60825-1:2007/EN 60825-1:2007
•IEC 60825-1:2014/EN 60825-1:2014
•21 CFR 1040.10 and 1040.11, except for changes due to Laser Notice No. 50 of
24/06/2007
The safety laser scanner’s accessible laser is not hazardous as long as the beam cross
section is not reduced by optical instruments, such as magnifying glasses, lenses, tele‐
scopes.
The curved part of the optics cover is the outlet for the laser radiation.
The laser marking is located on the underside of the safety laser scanner.
bYou must comply with the latest version of the applicable laser safety regulations.
CAUTION
If any operating or adjusting devices other than those specified in this document are
used or other methods are employed, this can lead to dangerous exposure to radiation.
bOnly use the operating or adjusting devices specified in this document.
bOnly follow the methods specified in this document.
bDo not open the housing, except for the purposes of the installation and mainte‐
nance work specified in these operating instructions.
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CAUTION
Observing the safety laser scanner through optical instruments (such as magnifying
glasses, lenses, telescopes) may be hazardous for the eyes.
bDo not look directly at the laser beam source using optical instruments.
2.2 Correct use
The safety laser scanner is an electro-sensitive protective device (ESPE) and is suitable
for the following applications:
•Hazardous area protection
•Hazardous point protection
•Access protection
•Mobile hazardous area protection (protection of automated guided vehicles)
The safety laser scanner must only be used within the limits of the prescribed and
specified technical data and operating conditions at all times.
Incorrect use, improper modification of or tampering with the safety laser scanner will
invalidate any warranty from SICK; in addition, any responsibility and liability of SICK for
damage and secondary damage caused by this is excluded.
Foreseeable misuse
DANGER
Hazard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of non-
observance.
The safety laser scanner works as an indirect protective measure and cannot provide
protection from pieces thrown from application nor from emitted radiation. Transparent
objects are not detected.
bYou must only use the safety laser scanner as an indirect protective measure.
The safety laser scanner is not suitable for the following applications, among others:
•Outdoors
•Underwater
•In explosive environments
2.3 Requirements for personnel qualifications
The safety laser scanner must only be configured, installed, connected, commissioned
and serviced by qualified safety personnel.
Project planning
For project planning, a person is considered competent when he/she has expertise and
experience in the selection and use of protective devices on machines and is familiar
with the relevant technical rules and national work safety regulations.
Mechanical mounting
For mechanical mounting, a person is considered competent when he/she has the
expertise and experience in the relevant field and is sufficiently familiar with the appli‐
cation of the protective device on the machine that he/she can assess its operational
safety status.
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Electrical installation
For electrical installation, a person is considered competent when he/she has the
expertise and experience in the relevant field and is sufficiently familiar with the appli‐
cation of the protective device on the machine that he/she can assess its operational
safety status.
Configuration
For configuration, a person is considered competent when he/she has the expertise
and experience in the relevant field and is sufficiently familiar with the application of
the protective device on the machine that he/she can assess its work safety aspects.
Commissioning
For commissioning, a person is considered competent when he/she has the expertise
and experience in the relevant field and is sufficiently familiar with the application of
the protective device on the machine that he/she can assess its operational safety sta‐
tus.
Operation and maintenance
For operation and maintenance, a person is considered competent when he/she has
the expertise and experience in the relevant field and is sufficiently familiar with the
application of the protective device on the machine and has been instructed by the
machine operator in its operation.
An operator may clean the safety laser scanner and carry out specific thorough checks
following instruction. More information for the operator of the machine: see "Operation",
page 109, see "Regular cleaning", page 114.
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3 Product description
3.1 Setup and function
The safety laser scanner is an electro-sensitive protective device (ESPE), which two-
dimensionally scans its environment with infrared laser beams.
The safety laser scanner forms a protective field using the invisible laser beams. This
protective field protects the hazardous area and enables hazardous-point protection,
access protection or hazardous-area protection. As soon as an object is situated in the
protective field, the safety laser scanner signals the detection by means of a signal
change at the safety output (OSSD for example). The machine or its control must safely
analyze the signals (for example using a safe control or safety relays) and stop the dan‐
gerous state.
The safety laser scanner operates on the principle of time-of-flight measurement. It
emits light pulses in regular, very short intervals. If the light strikes an object, it is
reflected. The safety laser scanner receives the reflected light. The safety laser scanner
calculates the distance to the object based on the time interval between the moment of
transmission and moment of receipt (∆t).


t
t
∆t


Figure 2: Principle of time-of-flight measurement
1Transmitted light pulse
2Reflected light pulse
A rotating mirror is situated in the safety laser scanner. The mirror deflects the light
pulses so that they scan a fan-shaped area.
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227,5°
0°
90°
-47,5°

Figure 3: Light pulses scan an area
1Angular resolution: the angular distance (in degrees) between two distance measure‐
ments
Scan cycle time and resolution
The time that the mirror requires for one rotation is called the scan cycle time. The
number of light pulses per unit time is constant. A change in the scan cycle time also
changes the number of light pulses per mirror rotation. This results in different angular
resolutions. The range for a given object resolution changes with the angular resolution.
The object resolution indicates the minimum size that an object must be to allow it to
be detected safely. Also, different response times result from a change to the scan
cycle time.
Slightly different scan cycle times can be used to minimize mutual interference in
neighboring safety laser scanners.
The resolution in protective fields can be set between 30 mm and 200 mm, according
to the intended purpose.
Geometry of the scan plane
The laser beams emitted cover a sector of a circle, so an object can be detected in an
area of up to 275°.
The sector of a circle covered ranges from –47.5° to 227.5°, where 90° denotes the
axis of the safety laser scanner from the back to the front. When viewing the safety
laser scanner from above, the direction of rotation of the mirror and the deflected light
pulses is counterclockwise, see figure 3.
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3.2 Product characteristics
3.2.1 Device overview








Figure 4: microScan3 – overview
1Optics cover
2Display
3Keypad
4USB connection
5Status LEDs
6Additional LEDs
7Safety laser scanner without system plug
8System plug
Different variants of the safety laser scanner are available, see "Variants", page 15,
see "Variant overview", page 132.
All variants have an optics cover and the rotating mirror is located below the optics
cover. The light pulses are emitted and the reflected light pulses are received through
the optics cover.
The display with four buttons is located below the optics cover. The safety laser scanner
also has a number of LEDs, see "Status indicators", page 15, see "Buttons and dis‐
play", page 110.
Information about connections: see "Connections", page 16.
The safety laser scanner can be mounted and operated in any alignment. In this docu‐
ment, position and direction information is used as follows with respect to the safety
laser scanner, as long as different usage is not indicated separately:
•The top is the side of the safety laser scanner on which the optics cover is located.
•The bottom is the side of the safety laser scanner opposite the optics cover.
•The front is the side of the safety laser scanner on which the display is located.
The 90° angle of the sector of a circle scanned by the safety laser scanner points
in this direction.
•The back is the side of the safety laser scanner opposite the display. The sector of
a circle not scanned by the safety laser scanner lies in this direction.
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3.2.2 Variants
The safety laser scanner is delivered in different variants. You will find an overview of
important distinguishing features of the variants in the following. Further information
about the variants see "Variant overview", page 132.
The following property differs in the variants:
•Maximum protective field range
Performance package
The core performance package features a number of configurable fields and a number
of safety switching functions (OSSD pairs).
•microScan3 core I/O: 8 fields; safety output: 1 OSSD pair
Integration in the control
The microScan3 Core I/O communicates with the machine controller as follows:
•I/O: local inputs and outputs (incl. OSSDs)
Protective field range
There are two variants with different protective field ranges:
•4.0 m
•5.5 m
3.2.3 Status indicators
The safety laser scanner outputs important status information using a number of LEDs.
The safety laser scanner has a graphical display and four pushbuttons for additional
information.
Four status LEDs are located directly above the display.
1 2 3 4
Figure 5: Status LEDs
Number Function Color Meaning
1OFF state Red Shines red when the OSSD pair is in
the OFF state.
2ON state Green Shines green when the OSSD pair is
in the ON state.
3Warning field Yellow Shines yellow if at least one warning
field is interrupted.
4Restart interlock Yellow Flashes if restart interlock is config‐
ured with reset and the restart inter‐
lock has been triggered. The operator
must press the reset pushbutton.
Table 1: Status LEDs
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The OFF state and ON state LEDs can be found in multiple locations on the safety laser
scanner. Three sets are arranged in pairs on the base of the optics cover. These LEDs
can also be seen in many cases when it is not possible to see the display, e.g. due to
the mounting situation or because it is hidden from the operator’s position.
More information about the meaning of the LEDs see "Diagnostic LEDs", page 121.
Depending on the configuration, the display shows current information about the safety
laser scanner’s status, see "Buttons and display", page 110.
3.2.4 Connections
The connections to the scanner are available as follows:
•microScan3 Core I/O: power supply and interfaces are tied via a short cable. The
cable is securely connected to the safety laser scanner. A single M12 plug connec‐
tor is located at the end of the cable.
•USB 2.0 mini-B (female connector). The USB connection may only be used tempo‐
rarily and only for configuration and diagnostics.
The safety laser scanner has the following interfaces:
•OSSD
•Universal I/O can be used as universal input, universal output or in pairs as static
control input
•USB for configuration and diagnostics
OSSD
An OSSD is a safety switching output. The functionality of each OSSD is tested periodi‐
cally. OSSDs are always connected in pairs and must undergo dual-channel analysis for
safety reasons. An OSSD pair is formed from two OSSDs that are connected and ana‐
lyzed together.
Control input
A control input receives signals, e.g. from the machine or from the control. Use of con‐
trol inputs is how the protective device receives information about the conditions at the
machine, e.g. if there is a change of operating mode. If the protective device is config‐
ured appropriately, it will activate a different monitoring case after receiving a new con‐
trol input.
The control input information must be transmitted reliably. Generally, at least two sepa‐
rate channels are used to do this.
A static control input is a dual-channel control input, which evaluates a signal level as
the value 0 or 1 on each channel. The signal states of a static control input give a
unique signal pattern. This signal pattern activates a monitoring case.
Universal I/O
Universal I/O can be configured as universal input or as universal output.
Universal input
A universal input can be used for resetting, external device monitoring (EDM), standby,
or restarting the protective device. If standby is activated by a universal input, the
standby must not be used for safety-related functions. Universal inputs can also be
used in pairs as a static control input.
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Universal output
A universal output outputs a signal depending on its configuration, e.g. if the reset
pushbutton needs to be pushed or if the optics cover is contaminated. A universal out‐
put must not be used for safety functions.
3.2.5 System plug
A system plug is required to operate the safety laser scanner.
In the microScan3 Core I/O, the entire base plate forms the system plug (see figure 4,
page 14).
The safety laser scanner’s internal configuration memory is integrated in the system
plug. The system plug and all connecting cables can remain at the installation site
when the safety laser scanner is replaced. The system plug is detached from the defec‐
tive safety laser scanner and connected to the new safety laser scanner. The new safety
laser scanner reads the configuration from the configuration memory when switching
on.
3.2.6 Field types
During operation, the safety laser scanner uses its laser beams continuously to check
whether people or objects are present in one or more areas. The areas to be checked
are called fields. A distinction is made between the following field types, depending on
how the safety laser scanner is used:
•Protective field
•Reference contour field
•Contour detection field
•Warning field
Protective field Reference con‐
tour field
Contour detec‐
tion field
Warning field
Safe switch off
(according to EN
ISO 13849-1)
Yes (PL d) Yes (PL d) Yes (PL d) No
Max. sensing
range of micro‐
Scan3
4.0 m or 5.5 m
(depends on var‐
iant)
4.0 m or 5.5 m
(depends on var‐
iant)
4.0 m or 5.5 m
(depends on var‐
iant)
40 m
Purpose Detection and
protection of peo‐
ple
Tamper protec‐
tion
e.g. door monitor‐
ing
Functional use
(no safety-rele‐
vant use)
Table 2: Field types and their function
Protective field
The protective field protects the hazardous area of a machine or vehicle. As soon as the
electro-sensitive protective device detects an object in the protective field, it switches
the associated safety outputs to the OFF state. This signal can be passed to controllers
resulting in the dangerous state coming to an end, e.g. to stop the machine or the vehi‐
cle.
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Figure 6: Protective field, shown in red in this document
Reference contour field
The reference contour field monitors a contour of the environment. The safety laser
scanner switches all safety outputs to the OFF state if a contour does not match the set
parameters, because, for example, the mounting situation of the safety laser scanner
were changed.
National and international standards require or recommend that a reference contour is
monitored, if the safety laser scanner is used in vertical operation for hazardous point
protection or for access protection.
The reference contour field detects unintentional and intentional changes to the posi‐
tion or alignment of the safety laser scanner. Unintentional changes may be caused by
vibrations for example. An example of an intentional change is deliberate tampering to
disable the safety laser scanner’s functionality.
Figure 7: Reference contour field, shown in blue-green in this document
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Contour detection field
The contour detection field monitors a contour of the environment. The safety laser
scanner switches the associated safety outputs to the OFF state if a contour does not
match the set parameters, because, for example, a door or flap is open.
The contour detection field is used for detecting changes in the environment and only
switches the outputs in the current monitoring case. By contrast, the reference contour
field is used for detecting changes at the safety laser scanner and switches all safety
outputs.
Warning field
The warning field monitors larger areas than the protective field. Simple switching func‐
tions can be triggered with the warning field, e.g. a warning light or an acoustic signal
can be triggered if a person approaches, even before the person enters the protective
field.
The warning field must not be used for safety-relevant tasks.
Figure 8: Warning field, shown in yellow or orange in this document
3.2.7 Field set
A field set consists of one or more fields. The fields in a field set are monitored simulta‐
neously.
A field set can contain various types of field.
A typical application is the use of a protective field with one or more warning fields: if a
vehicle approaches a person, a warning field triggers an optical or acoustic signal. If the
person does not react to this and the vehicle continues to approach, the safety laser
scanner detects an object in the protective field and switches the associated safety out‐
puts to the OFF state. The vehicle stops before it reaches the person.
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Figure 9: Field set, consisting of one protective field (red) and two warning fields (orange and yel‐
low)
3.2.8 Monitoring case
A monitoring case signals the machine status to the safety laser scanner. The safety
laser scanner activates the field set, which is assigned to the monitoring case and
therefore a particular machine status.
If a machine, e.g. , has various operational statuses, a monitoring case can be
assigned to each operational status. The safety laser scanner receives a defined signal
for the current operational status via the control inputs. If there is a change of signal,
the safety laser scanner switches from one monitoring case to the monitoring case that
is assigned to the new signal (and so to the new operational status). Generally, one
field set is assigned to each monitoring case.
Figure 10: Monitoring case 1 with field set 1
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