SEQUENCER WITH
DIFFERENTIAL PRESSURE
SWITCH
Technical brochure
FI 72.0452.0617E
Page 19 / 25
Page parameters 3/4:
The device can detect a fan stop, by two ways : by I1 input or by measure of load loss dP. When it moves from
running fan state to stop fan state : the quantity of declogging cycles is done.
Remark : if during the achievement of the indicated number of declogging cycles, the fan stops and starts again,
the running declogging cycle stops and we start again with standard running.
1 : Choose the type of detection for fan stop(reachable at level 1 or above) :
«by input I1loss » : the stop of the fan is detected if I1=0.
Remark : the running of the fan is detected if input I1=1
«by dP loss » : the stop of the fan is detected if the load loss measure is lower than the value indicated on the
next parameter (see point 2).
Remark : the running of the fan is detected if the load loss measure dP is higher than the indicated value,
more than 5 seconds.
2 : If the type of detection of fan stop is « by dP loss», this value shows the detection threshold (reachable at level
1 and above). Adjustable from 5 to 20 daPa.
3 : Number of cycles to run when the fan stops.
Adjustable from 0 to 255 cycles (reachable at level 1 or above). If adjusted at 0 : not active.
4 : Display of the current protection level.
5 : If press this area : go back to previous parameter page.
6 : If press this area : go back to main page.
7 : If press this area : moves to the next parameters page.
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