D145H4502 Ed. 01
13
Fan control
Proportional mode
WITHOUT FREQUENCY CONVERTER
The controller activates (red line) or deactivates (green line) the different fans available in a linear manner depending
on the reading obtained in probe 2 until the Set Point (E01) is reached again, as shown in the following figure.
The delays t05 to t08 must be accounted for.
WITH FREQUENCY CONVERTER
If there is a frequency converter, the frequency converter modulates the power of the fans between 0 and 100%.
Direct
operation (C7=0)
Inverse
operation (C7=1)
Fan 4 ON
Fan 3 ON
Fan 2 ON
Fan 1 ON
Bandwidth (F06)Bandwidth (F06)
Pressure in Probe 2
Fans ON
Direct
operation (C7=0)
Inverse
operation (C7=1)
Fans at 100%
Fans at 0%
Bandwidth (F06)Bandwidth (F06)
Pressure in Probe 2
Fan power