SICK CLV 45 Series, Operating Instructions Manual

Page: 32 / 174

Chapter 4 Operating Instructions
CLV 45x Bar Code Scanner
4-4
© SICK AG · Division Auto Ident · Germany · All rights reserved 8 009 139/K949/06-06-2002
Installation
The dimensioning of the mounting brackets is shown in Chapter 10.12 Dimensioned dra-
wings of the accessories, Page 10-54 .
Hint For applications with strong mechanical vibrations applied to the CLV the mounting bracket
with vibration damper No. 2 031 342 is available. See also Chapter 10.11.1 Mounting ac-
cessories, Page 10-51 .
4.2.7 Distance between the CLV and the bar code
Theoretical positioning of the scan line to the bar code
Either a line scanner or a line scanner with oscillating mirror is used as the CLV, depending
on the respective application. Fig. 4-5 shows the theoretical positioning of the two scanning
processes to the bar code on the object.
Reading distance to the bar code and the aperture angle
α
The distance between the reading window of the CLV and the bar code may not exceed the
limits imposed by the device. Chapter 10.2.4 Depths of field for CLV 450 line scanner
(front-end reading window), Page 10-5 to Chapter 10.2.5 Depths of field for CLV 450 line
scanner with oscillating mirror (side-end reading window), Page 10-9 shows the height of
the reading field as a ratio of the reading distance for various resolutions (module widths).
Fig. 4-7 shows the definition of the reading distance a from the reading window and of the
aperture angle
α
of both scanning processes.
Fig. 4-4: Line scanner: Example of the mounting possibilities of the CLV with the mounting
bracket No.
2 022 564
Fig. 4-5: Positioning of the scanning process to the bar code and to the conveyor direction
Line scanner Line scanner with
oscillating mirror