Mounting and installation
Leuze electronic GmbH + Co. KG
BPS 8
28
If the bar code tape cannot be affixed without interruption, the tape-free gap should be wider than 300 mm.
When passing over the gap, the scanning beam can therefore always only read the preceding or subse
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quent position bar code.
Make sure that when starting the bar code tape after the gap approx. 10 position bar codes are cut off,
because there may otherwise be an output of the same position values before and after the gap.
Figure 6.3: Cut bar code tape
6.1.3 Mounting the BCB
Mount the BCB as follows:
Check the surface.
It must be flat, free of grease and dust, and be dry.
Define a reference edge (e.g., metal edge of the busbar).
Remove the backing and affix the BCB along the reference edge tension free.
Secure the bar code tape to the mounting surface by pressing down with the palm of your hand.
When affixing, make certain that the BCB is free of folds and creases and that no air pockets form.
NOTE
No glossy gaps in the cut bar code tape!
Ensure that there are matt, bright surfaces behind the gaps in the BCB.
Polished, reflective, and high-gloss surfaces in the scanning beam may impair the measure
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ment quality of the BPS.
000072
000075
000078
*
*
*
*
*
A Preceding bar code tape
B Cut mark
C Gap, at least 300 mm
D Subsequent bar code tape
B
C
A
B
D
NOTE
When mounting, do not pull on the BCB!
The BCB is a plastic tape that can be stretched by strong mechanical tension. The stretching
results in lengthening of the tape and distortion of the position values on the BCB.
While the BPS can still perform the position calculation in the event of distortions, the abso
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lute measurement accuracy is no longer ensured in this case. If the values are taught using
a teach-in process, stretching of the BCB is irrelevant.
NOTE
If a bar code tape was damaged, e.g., by falling parts, you can download a repair kit for the BCB
from the Internet (see chapter 6.1.4 "BCB repair with repair kit").
Use the bar code tape created with the repair kit only temporarily as an emergency solution.
