Installation and mounting
Leuze electronic
BCL 504
i
67
TNT 35/7-24V
Notice!
The beam exits the BCL 504
i
as follows for the respective devices:
- line scanner
parallel
to the
housing base
- oscillating mirror and deflection mirror
perpendicular
to the
housing base
The black areas in figure 6.1 are the housing base. The best read results are obtained when:
• The BCL 504
i
is mounted in such a way that the scanning beam is incident on the
barcode at an angle of inclination greater than ±10° … 15° to vertical.
• The reading distance lies in the middle area of the reading field.
• The barcode labels are of good print quality and have good contrast ratios.
• You do not use high-gloss labels.
• There is no direct sunlight.
6.3.2
Avoiding total reflection – Line scanner
The barcode label must be positioned at an angle of inclination greater than ±10° … 15°
from vertical in order to avoid total reflection of the laser beam (see figure 6.5)!
Total reflection occurs whenever the laser light of the barcode reader is directly incident on
the surface of the barcode at an angle of 90°. The light directly reflected by the barcode may
overload the barcode reader and thereby cause non-readings!
Figure 6.5:
Total reflection – line scanner
6.3.3
Avoiding total reflection – oscillating/deflection-mirror scanner
For the BCL 504
i
with
oscillating/deflection mirror
, the laser beam exits at an angle of
90°
to vertical
.
For the BCL 504
i
with
deflection mirror
, it is also possible to
use software to adjust the
direction of the beam by ±10°
.
For the BCL 504
i
with
oscillating mirror
, the
swivel range of ±20°
(±12° for devices with
heating)
is to be taken into account
.
This means that in order to be on the safe side and to avoid total reflection, the BCL 504
i
with oscillating/deflection mirror must be inclined upward or downward 20° … 30°!
Zero
pos
ition
Dist
ance
acc
. to r
eadi
ng fi
eld c
urve
s
Barcode
The BCL 504
i
should be mounted in such a way that the
scanning beam is incident on the barcode at an angle of in-
clination greater than ±10° … 15° to vertical.
±10 … 1
5°