FC 300 Design Guide
Introduction to FC 300
The following is an example of Process PID Control used in a ventilation system:
In a ventilation system, the temperature is to
besettablefrom23-95°F(-5-35°C)witha
potentiometer of 0 -10 Volt. The set temperature
must be kept constant, for which purpose the
Process Control is to be used.
The control is of the inverse type, which means that
when the temperature increases, the ventilation
speed is increased as well, so as to generate more air.
When the temperature drops, the speed is reduced.
The transmitter used is a temp erature sensor wit h
a working range of 14 -104°F (-10-4 0°C), 4-20
mA. M in. / Max. speed 300 / 1500 RPM.
NOTE
The example shows a two-wire transmitter.
39
MG.33.B3.22 - VLT is a registered Danfoss trademark
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