Chapter 7 Operating Instructions
C 4000 Standard/Advanced
58 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8 009 861/OE59/19-11-04
Commissioning
7.3.3 Daily functional checks of the protective device
The effectiveness of the protective device must be checked daily by a specialist or by
authorised personnel, using the correct test rod.
Always test along the complete hazardous area to be protected, never solely at the
mounting position of the light curtain.
How to check the effectiveness and proper function of the safety light curtain:
Select the correct test rod depending on device resolution. By means of the configura-
tion, the entire system or individual areas can have a physical resolution that is different
to the effective resolution, e.g. in case of blanking or reduced resolution. In this case you
must select the test rod to suit the effective resolution. The effective resolution is des-
cribed with the related function in chapter 4.
Example: – physical resolution 14 mm
– operation with resolution reduced by 1 beam
– effective resolution 22 mm
Use the test rod for a resolution of 22 mm.
Do not operate the machine if the green or yellow LED is lit during the test!
If the green or yellow LED lights up during the test even for a short period, work must stop
at the machine. In this case the mounting and the configuration of the safety light curtain
must be checked by specialised personnel (see chapter 5).
Before inserting the test rod, check that the green LED is lit if the internal restart inter-
lock is deactivated and that the yellow LED flashes (“Reset required”). If this is not the
case, make sure that this condition is reached. The test is otherwise meaningless.
Move the test rod slowly through the protective field to be tested, as shown in in
Fig. 37.
Then move the test rod along the edges of the protective field, as shown in in Fig. 37.
This procedure allows you to test if the point-of-operation/reaching behind protection is
functioning properly (see 5.2 “Steps for mounting the device” on page 41).
If you use one or more deflector mirrors (e.g. PNS), then also guide the test rod slowly
through the protective field directly in front of the mirrors.
In all three tests, the receiver of the C 4000 must show the red LED only.
Note
%
WARNING
Note
Fig. 37: Daily checks of the
protective device
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