Leuze electronic DCR 202i, Original Operating Instructions

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Mounting
Leuze electronic DCR 202i 21
6 Mounting
The code reader can be mounted in the following ways:
• Mounting using four M4 mounting threads on the rear of the device
• Mounting using two M4 mounting threads on each of the side surfaces of the device
• Mounting on a 12 mm rod using the BTU 320M-D12 mounting system
• Mounting on the BT 320M mounting bracket
6.1 Determining the mounting position of the code reader
6.1.1 Selecting a mounting location
Take the following factors into account when selecting the correct mounting location:
• Size, orientation, and position tolerance of the bar codes or Data Matrix codes on the objects to be
scanned.
• The reading distance resulting from the code size and code type (see chapter 6.1.3 "Determining the
reading distance").
• Time of data output.
Position the device in such a way that, taking into consideration the time required for data processing
and the conveyor belt speed, there is sufficient time to e.g. initiate sorting operations on the basis of
the read data.
• The permissible line lengths between code reader and host system depending on which interface is
used.
• Visibility of the control panel and access to the control buttons.
• No direct sunlight and/or no strong ambient light on the code that is to be read.
Observe the following criteria for the best read results:
• The reading distance is located in the middle part of the read field (see chapter 6.1.3 "Determining
the reading distance").
• There is no direct sunlight and protect against ambient light effects.
• The code labels are of good print quality and have good contrast ratios.
• Do not use glossy labels.
• The bar code or DataMatrix code is moved past the reading window with a tilt angle or angle of incli
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nation of 10° … 20° (see chapter 6.1.2 "Avoiding total reflection").
6.1.2 Avoiding total reflection
If the illumination light of the code reader is directly incident on the surface of the code at an angle of 90°,
total reflection occurs. The illumination light directly reflected by the code label may overload the code
reader and thereby result in non-reading of the code.
 Mount the code reader with a tilt angle or angle of inclination of ±10° … 20° from vertical.
The size of the code module influences the maximum reading distance and the width of the read
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ing field. Therefore, when selecting a mounting location and/or the suitable code label, take into
account the different reading characteristics of the code reader with various code modules.
NOTICE
Observe when choosing the mounting location!
 Make certain that the required environmental conditions (humidity, temperature) are maintained.
 Avoid possible soiling of the reading window due to liquids, abrasion by boxes, or packaging material
residues.
 Ensure the lowest possible chance of damage to the code reader through mechanical collision or
jammed parts.
 Avoid possible ambient light influence (no direct sunlight).