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DS series Instructions manual

7. FUNCTIONING MODE

The DS3 light grid is a detection and measurement device and thus the

beam interruption due to an object causes the switching of the digital

output (PNP type) and/or the change of the analog output signal. Small

objects (up to 0.5 mm), transparent films and measurement of

geometrical dimensions with a 6 mm resolution, can be obtained by

setting the device at the right sensitivity.

The different functioning modes available are listed below:

7.1. Scanning mode (see functions 1 and 2 of Tab.1 at page 14)

Two different scanning types can be accomplished with the

AREAscan

of the DS3 series:

• Scanning with PARALLEL beams: where each si ngl e

photoreceiver is illuminated only by the beam of the corresponding

photoemitter with a precise scanning sequence (this mode

activates only one photoreceiver/photoemitter couple each time,

during the scanning cycle).

This mode can be used both for the detection of objects as well as

the dimensional measurement (this measurement is supplied to the

operator by the analog output 0-10V). The minimum object that can

be detected has to be ≥ 6 mm (that represents the minimum

resolution (R), Fig.8, of the device in this mode).

Fig. 8

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Emerald Spa DS-4 Bedienerhandbuch Seite 19