Leuze electronic CR 55 Series, Руководство по эксплуатации

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Mounting
Leuze electronic CR 55 10
4 Mounting
You can fasten the bar code reader at the M2.5 mounting threads.
4.1 Selecting a mounting location
In order to select the right mounting location, several factors must be considered:
• size, orientation, and position tolerance of the bar codes on the objects to be scanned.
• The reading field of the bar code reader in relation to the bar code module width.
• The bar code reader is designed for reading codes in ladder orientation.
• the resulting minimum and maximum reading distance from the respective reading field; see
figure 11.1.
• alignment of the bar code reader for avoiding reflections.
• distance between bar code reader and host system with respect to the interface.
The best read results are obtained when
• the reading distance lies in the middle area of the reading field.
• there is no direct sunlight and extraneous light is avoided.
• the bar code labels are of good print quality and have good contrast ratios.
• you do not use high-gloss labels.
• the bar code is moved past the reading window with a rotational angle of 10° to 15°.
• the red light beam is narrowed down for its respective reading task in order to avoid reflections on
shiny components.
α Azimuth angle
β Angle of inclination
γ Angle of rotation
Recommended angle of rotation: γ > 10°
Figure 4.1: Definition of the reading angles
The size of the bar code module influences the maximum reading distance and the width of the
reading field. Therefore, when selecting a mounting location and/or the bar code label, take into
account the different reading characteristics of the scanner with various bar code modules.
NOTICE
Observe when choosing the mounting location!

Maintaining the required environmental conditions (temperature, humidity).

Possible soiling of the reading window due to liquids, abrasion by boxes, or packaging material resi
-
dues.
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Lowest possible chance of damage to the scanner by mechanical collision or jammed parts.

Possible extraneous light influence (no direct sunlight).
With front-side beam exit, the beam exits the bar code reader nearly perpendicular to the reading
window. The bar code label must be rotated by > 10° to avoid a total reflection of the red light
beam in the case of glossy labels.
α
β
γ