Sices HS 315, Техническое руководство

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46 Technical Handbook
The figure above shows a conversion curve associated to an analogue output. The analogue
output has been configured with the function AOF.3113
– “Voltage of the generator (DC)”. In
this configuration, the output will run at 10% for a voltage of 45 Vdc or lower, and at 90% for a
voltage of 55 Vdc or higher; for voltage values ranging between 45 Vdc and 55 Vdc, the output
will have a value between 10% and 90%.
You can add up to 32 points in the graph, thus creating also non-linear curves. See in the
example that the curve configured has two horizontal segments at the beginning and at the
end, obtained by entering two equal values in the “After” column, corresponding to two different
values in the “before” column. This is not obligatory, but it allows you to set a saturation limit
on one end or on both ends of the curve. In fact, the controller board extends to infinity the first
and last segments of the curve. Being horizontal, whatever value the measure “to convert”
assumes, you will obtain the same value of the “converted” measure. In the previous example,
for any voltage measure lower than 45 Vdc, the analogue output will be set at 10%. If from the
example above you removed the first point (44 Vdc 10%), the horizontal segment would not
be at the beginning of the curve: in this case, if the voltage should drop below 45 Vdc, the
analogue output would drop below the 10%.
The BoardPrg3 software allows you (by means of the first buttons on top left) to save the curve
on file to be able to use it again in other applications. So, you can create an archive of the
conversions associated to the sensors used.
In case the curve is associated to a physical analogue input configured with the functions
AIF.2001, AIF.2003 and AIF.2005
(“Generic sensor”), the measure converted will be displayed
on pages E.11, E.12 and E.13: in this case you can also specify (through the conversion curve)
how many decimal digits will the value displayed have, as well as its unit of measurement).