
Leuze
electronic
Mounting
Leuze electronic
Technical Description BCL 90
77
T
N
T 35/
7-
24V
Figure 6.10:Example for positioning the object distance detection device when mounting
1.
Look up the depths of field of the BCL for the given resolution of the bar code in the diagrams in
Figure 4.3 to Figure 4.8 (line scanner) or Figure 4.9 to Figure 4.10 (line scanner with oscillating
mirror) starting from Section 4.3, on page 32. Find and record the appropriate focus positions
for overlapping DOF.
2.
Place the distance sensors (e.g. retro-reflective photo electric sensors) for object height detec-
tion accordingly in a vertical row at the mounting site (see also Table 7.18, on page 93). We
recommend mounting the distance sensors around 100 mm before the reading cycle sensor
against the transporting direction.
3.
Connect the distance sensors via the connection unit MA 90 to the switched inputs
"SE 2 … SE 6" of the BCL (see Section 7.5.6, on page 90).
4.
Adjust the focus positions for the needed DOF through the user interface of BCL-Config.
5.
Select the standard decoder and call up the percentage evaluation temporarily.
6.
Check the reading quality for the distance configurations in statical operation (object not in
transport motion)
7.
Finally, check the function of distance detection in actual read operation of the application. For
this purpose, observe the read result in the terminal emulator as in Section 6.4.2, on page 76.
Base setting: focus position F 1 to F 8 = 1200 mm
Notice!
The BCL can switch between a maximum of eight distance ranges for low-speed search
functions by way of the integrated timer or oscillating mirror reversal points.
The BCL can switch between a maximum of eight distance ranges synchronous to the proc-
ess through command strings.
AK1
AK2
AK8
LS1
LS2
LS7
h2
h7
h1
Object distance
Read distance
Dc = distance configuration
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