SEQUENCER WITH
DIFFERENTIAL PRESSURE
SWITCH
Technical brochure
FI 72.0483.0720E
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Fan parameters page:
The device can detect an fan stop by two ways : by I1 AON input (I1) 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.
Note : if during the achievement of the indicated number of declogging cycles, the fan starts again, the current
running declogging cycle is finished, then we start again with standard running.
1: Choice of 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.
Note: 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 dP measure is lower than the value indicated on
the next parameter (see point 2).
Note: the running of the fan is detected if the load loss dP measure 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 set to 0 : not active.
4: displays the current protection level.
5: if press on this area: go back to parameters menu page.
6: if press on this area: go back to main page.
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