Installation and mounting
Leuze electronic
LES 36
39
TNT
35/7-2
4
V
5.3
Device arrangement
5.3.1
Selecting a mounting location
In order to select the right mounting location, several factors must be considered:
• The required resolution. This is a result of the distance and the resulting line length.
• The permissible cable lengths between the LES and the host system depending on
which interface is used.
• The display and control panel should be very visible and accessible.
When selecting a mounting location, pay further attention to:
• Maintaining the required environmental conditions (temperature, humidity).
• Possible soiling of the optics covers on transmitter and receiver by discharged liquids,
abrasion from cartons or packaging residues.
• Lowest possible chance of damage to the LES by mechanical collision or jammed
parts.
• Possible extraneous light (no direct sunlight or sunlight reflected by the measurement
object).
• The optimal perspective for detecting the relevant contours of objects, see
Attention, laser radiation!
When mounting and aligning the LES, avoid reflections of the laser beam off reflective sur-
faces!
Note!
The prevention of ambient light due to shielding of the sensor for example, ensures stable
and precise measurement values. Secondary reflections of the laser line on reflective objects
must be avoided as these can result in faulty measurements.
The best measurement results are obtained when:
- You adapt the operating mode (light/dark) to the application
- You do not measure high-gloss objects.
- There is no direct sunlight.
5.3.2
Aligning the sensor
The zero point of the sensor coordinate system is the intersection of optical axis and front
edge of the housing. The general principle is that the Light section sensor should be aligned
so that the back of the sensor is aligned parallel to the conveying belt or measuring plane.
Rotation along the Y-axis is not desirable.
The Figure 5.6 illustrates the problem:
