Baumer BA DenexMicro - Manual (Page 5)

User Manual DENEX MICRO 5/24 Baumer Electric AG
Version 2013-02, V1.6 www.baumer.com Frauenfeld, Switzerland
3 BASIC FUNCTION
The DENEX MICRO is a non-contact sensor which counts all kinds of printed products on
an overlapped stream. It senses the leading edge and generates one output pulse for
every product. Product thickness from a single folded sheet up to a maximum stream
thickness of 70 mm can be sensed without adjustments.
The laser diode that is used produces a visible and very intensive and focused light beam
which is projected onto the stream. The reflected light from the spot is collected by two
light sensitive detectors P and R and is analyzed by a microprocessor. The difference in
reflected light that occurs when the light spot is temporarily hidden behind the passing
product edge provides the basic data for the sensor to determine a count output pulse.
Figure 3.1 The principle of operation
The patented principle in utilizing two detectors - one for detecting the obstructed light and
the other for reference, enables the following unique benefits:
Wide operating range
High precision
Insensitive to color of paper or print
Insensitive to product thickness
Insensitive to variations in distance to copy stream
The use of a microprocessor further enhances the flexibility and reliability of the unit.
Through the use of the microprocessor, the DENEX MICRO can be adapted to different
operating modes by changing DIP-switch settings which can be reached from outside, via
the glass window.