madur electronics maMoS 100, Руководство пользователя, Страница: 91 / 96

www.madur.com Manual maMoS 100/200/300/400
put changes the relay switches off. If any of the analogue outputs has been chosen from
the list the additional options appear in the tab (Picture 102.). They enable the user to spe-
cify the exact values that switch the outputs "ON" and "OFF" .
After one of the analogue outputs has been chosen for the source of the signal
used for controlling the relay the additional options shown in the Picture 102. appear on
the left side of the tab. On the top a graph showing the relay's hysteresis appears. The
characteristic of the chosen output can be seen below it. With the help of the sliders situ-
ated on the left side of the graph the user can set the values (in percent) switching the re-
lay on and off according to the level of the signal on the chosen output. In consequence
switching the relay depends on the concentration of the gas assigned to the chosen out-
put. The upper slider can be used for setting the value which turns the relay on (marked
with the red line on the graph) and the lower slider regulates the value for which the relay
turns off (the green line). These can be set by defining the level of the source signal in per -
cent. The information on the source signal value and the concentration of the gas assigned
to the output referring to the current sliders positions can be seen below the graph.
In the example shown in Picture 102., the U1 output (which is assigned to the CO
2
carbon dioxide measurement) has been chosen to control the relay. The U1 output is set
as follows: the 0V value is assigned to 10% CO
2
concentration and the 10V value refers to
a concentration of 30% CO
2
. With the help of the sliders the value for which the relay is
switched on - "Relay ON" has been set for 95 % of the range (i.e. 9.5V) and the value for
which the relay is switched off - "Relay OFF" has been set for 25% of the range (i.e. 2.5V).
The data below the graph informs the user that the relay will be switched on if the voltage
of the U1 output exceeds a value of 9.5V – equivalent to a concentration of 29% oxygen:
30 % CO
2
−
10 % CO
2
10V
−
0V
⋅
9,5 V
+
10 % CO
2
=
29 % CO
2
The relay switches off if the voltage drops below 2.5V – equivalent to a concentration of
15% oxygen:
30 % CO
2
−
10 % CO
2
10V
−
0V
⋅
5,5 V
+
10 % CO
2
=
15 % CO
2
91