Emerald Spa DS-4 Manuál s instrukcemi Strana 21

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DS series Instructions manual
18
7.2. Measurement mode
7.2.1. Absolute mode (see functions 5 and 6 of Tab.1 at page 14)
Provides the measurement of the dimension of the object beginning
from an absolute reference. The first photoelement is taken as a
reference (1) beginning from the connector side. The analog output
voltage is proportional to the number of beams (obscured and not)
i ncl ud ed be tween the reference and l ast beam e ffecti vel y obscured.
The level of the analog output voltage can be selected using the dip-
switches (functions 5 and 6 of Tab.1 at page 14 – respectively V
OUT
max. at channel 1 and V
OUT
min. at channel 1); the voltage can thus be
maximum or minimum in correspondence to the obscuring of the beam
taken as a reference.
Fig. 10 can be taken as an example: the obscuring of the beams is
considered as corresponding to the VOUT of 1V variation. At the
obscuring of the last beam, the VOUT reaches the 10V full scale. If the
VOUT min. option is set to the channel 1 (A), the VOUT in question will
be = 6V; on the contrary will be = 7V (B).
The PNP output is active when at least one photoelement is obscured.
The function of the absolute measurement is active only with the
parallel beam mode.
Analog output Output level PNP output
A V
OUT
min. to cha nn el 1 6V
B V
OUT
max. t o ch an nel 1 7V
ON
Fig. 10
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