SICK C 4000 Series, Руководство по эксплуатации

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Operating Instructions Chapter 3
C 4000
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Product description
3.4.5 Fixed blanking
Fig. 7: Schematic layout
of the fixed blanking
The light curtain C 4000 is capable of fixed-blanking one or several adjacent beams, e.g. to
allow continued operation in spite of an obstruction such as a table placed permanently in
the light path.
The blanked area will no longer be part of the protective field. Blanked objects must there-
fore be permanently located inside the blanked area (

). As soon as the object is removed
from the beam path, the light curtain will send a signal to disrupt the dangerous movement
(
‚
). Protection is otherwise no longer guaranteed.
WARNING
Completely protect the blanked area!
The object must cover the entire distance between sender and receiver.
>
If necessary, protect the areas to the left and right of the object against intrusion by fit-
ting mechanical barriers!
Fig. 8: Protecting a fixed blank-
ing using mechanical barriers
>
Also, make sure that the object can only me removed as a whole together with the bar-
riers.
>
After adapting the blanking, check the protective field with the test rod. Instructions are
found in chapter 6.3.3 on page 37.
Blanked area, sides protected by
mechanical barriers