Preventa™ Light Curtains
Type XUSL
Catalog Supplement to 9007CT0201
2009
Contents
Safety detection solutions
Light curtains
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Light curtains, type 4
For finger or hand protection
b
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
b
Light curtains optimum with solid-state output,
type XUSLB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
b
Light curtains universal with solid-state output,
type XUSLDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
b
Segments for cascadable universal light curtains
type XUSLDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
b
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
b
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
b
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
b
Subsitution Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
b
Connection module for muting functon on light curtains type XUS LDM
type XPSLCM1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
b
Description, References, Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
b
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
b
Functional Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
b
Mirrors, protective covers, and mounting kits . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
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Schneider Electric ®, the Schneider Electric logo, and Preventa™ are trademarks
or registered trademarks of Schneider Electric .
Other trademarks used herein are the property of their respective owners .
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General
Safety detection solutions
Light curtains
Presentation
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2
Directives and standards
Light curtains are electro-sensitive protection equipment (ESPE) designed for the
protection of persons operating or working in the vicinity of machinery, by stopping
the dangerous movement of parts as soon as one of the light beams is broken.
In particular, they provide protection for the
safety of personnel
operating
dangerous machinery (annex IV of 98/37/EC) but they are equally suitable for use
with many other types of machines. They make it possible to protect personnel while
allowing free access to machines.
The absence of a door or guard reduces the time required for loading, inspection or
adjustment operations as well as making access easier.
Protection of personnel
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Applications
These light curtains conform to:
b
European Machinery Safety Directive 98/37/EC and European Work Equipment
Directive 89/655/EEC,
b
Low Voltage Directives 73/23/EEC and 93/68/EEC and also, the Electromagnetic
Compatibility Directive 89/336/EEC,
b
Standard EN/IEC 61496-1, EN/IEC 61496-2 (electro-sensitive protection
equipment: ESPE),
b
Standard EN 60825 (emission power),
b
Standard EN 999/ISO 13855 (installation positioning),
These light curtains are UL, CSA and TÜV certified.
Conformity to standards
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b
Applications for type 2 products:
- assembly and packaging lines,
- conveying and handling lines,
- warehousing and storage systems,
- waste disposal skips.
b
Types of machine requiring the use of type 4 products:
- presses (all types), shears and trimmers,
- hoisting equipment,
- saws (all types),
- machine tools (lathes, milling machines, machining centers),
- woodworking machines (planing machines, lathes, spindle moulding machines,
side and face milling cutters),
- textile machinery (carding machines, weaving looms, steam rooms),
- assembly machines,
- assembly robots.
Main applications
Safety requirements
Detection of anomalies liable to compromise safety and stopping of the
machine
The design of the machine and its control system must be to the same level of safety
as that of the light curtain in order to provide the immediate stopping of the machines
dangerous movement as soon as the hazardous zone, protected by the light curtain,
is entered.
It must not be possible to enter the protected zone without breaking the protective
light beams. The light curtain must therefore be installed in such a manner that the
light beams cannot be avoided.
The machine can only be restarted if no danger exists and no personnel are present
in the hazardous zone. The risk that persons might be inside the protected zone but
out of the protective light beams must be addressed.
Detection of anomalies
2
General
(continued)
Safety detection solutions
Light curtains
Functions
AUTO/MAN (automatic/manual): this is what standard EN/IEC 61496 calls start (or
restart) interlock of the light curtain:
b
in AUTO mode: on power-up or after the beams have been cleared, the light
curtain resets itself automatically (closing of the OSSD output safety circuits),
b
in MANUAL mode: on power-up or after the beams have been cleared, the light
curtain keeps its output safety circuits in the “open” position. Pressing (and releasing)
the reset button will cause actual resetting of the light curtain (and closing of its
OSSD output safety circuits).
Note:
in all cases, a general start instruction for the machine will trigger its actual
start-up.
Protection mode
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2
Also called EDM (External Devices Monitoring) by standard EN/IEC 61496, this
consists of monitoring the function (open or closed), together with the time taken to
reach that condition, of the machines power switching components.
Monitoring of external switching devices
This is a low power solid-state output for signalling, when configurable (XUSLM/
XUSLP), to the automation system. This output closes when the light curtain
switches to run mode.
Auxiliary output
This is a low power solid-state output for signalling to the automation system. This
output closes when the light curtain switches to alarm mode.
Alarm
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LED display of operating modes and alarm.
Signalling
Display by visible infrared LED of each beam broken.
Alignment aid
When activated, the “muting” function inhibits the detection function of the light
curtain.
Activation (or deactivation) is achieved by means of standard sensors (photo-electric
or other). When activated, a signal is sent to the automation system. This function is
used to allow objects to access the hazardous zones during the process.
Signalling informs the operator or operators that they are not protected.
Muting (inhibition)
This function makes it possible to inhibit detection by a selected group of light beams
in the light curtain (and not all the beams as with muting). This function (adapted to
the size of the objects) allows the presence of objects during process operations.
Blanking effectively increases the Minimum Object Sensitivity (MOS). This imposes
a greater safety distance , increasing the minimum distance between the light curtain
and the hazard. In addition, the use of additional protection each side of the object
present must be included, in order to prevent any intrusion into the free areas.
This function makes it possible to inhibit one or two light beams (adjacent or
otherwise), anywhere in the light curtain. This configuration is used, for example, for
metal plate feeding applications on folding presses or shears.
Blanking
Floating blanking
The Blanking (fixed inhibition of light beams) and Floating Blanking (moving inhibition
of one or two light beams) functions can be combined.
Blanking plus floating blanking
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