SICK PLS 201-313 Betriebsanleitung Seite 174

PLS
3. Daily inspection of the safety device by authorized and
designated personnel:
How to test your PLS system properly:
1. The test must be performed every time the operating mode
is changed.
2. Check the mechanical installation to ensure that all mount-
ing screws are secure and that the PLS is properly aligned.
3. Check the PLS for visible changes, such as damage, mani-
pulation etc.
4. Switch on the machine / system.
5. Watch the LEDs on the PLS (red, green, yellow).
6. If at least one LED does not shine constantly when the ma-
chine/system is switched on, it can be assumed that there
is a fault in the machine/system. In this case the machine
must be shut down immediately and checked by a special-
ist.
7. Deliberately obstruct the protective field while the machine
is running in order to test the effectiveness of the entire
system. The LEDs must change from green to red and the
hazardous movement must come to an immediate stand-
still. Repeat this test at different points in the danger area.
If you discover any deviation from the proper function, the
machine/system must be shut down immediately and
checked by a specialist.
8. For stationary applications, check that the danger area
marked out on the floor matches the shape of the protec-
tive field stored in the PLS and that any gaps are protected
by additional safety measures. In the case of mobile appli-
cations, check that the moving vehicle actually stops at the
field limits which are set in the PLS and listed on the data
plate in the vehicle or in the configuration protocol. If you
discover any deviation from the proper function, the ma-
chine / system / vehicle must be stopped immediately and
checked by a specialist.
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8 008 321/M844/06-05-02 Operating Instructions • PLS
GB