K-BUS
KNX/EIB 3.5/5.0/10.1 inch Touch Panel Plus
60
○
R
NOTE:
When hysteresis is enabled, if the threshold overlap occurs, the fan's action is specified as follows:
1) Hysteresis determines the control point where Fan speed conversion occurs;
2) If Fan speed conversion occurs, the new fan speed is determined by the control value and the
threshold value, irrespective of hysteresis.
For example (1):
Take PM2.5 as an example
OFF <-> Low fan speed threshold value is 35
The threshold value of fan speed in low fan speed <-> is 55
The medium fan speed <-> high fan speed threshold value is 75
Hysteresis value is 25
The fan speed of the fan turbine increases from OFF:
The fan OFF state will change at a control value of 60 (≥25+35), and the new fan speed will be the
mid-fan speed (because 60 is between 55 and 75, irrespective of hysteresis at this time), so the low fan
speed is ignored;
The behavior of the fan's fan speed when descending from a high fan speed:
The fan's high fan speed will change at a control value of 50 (<75-25), and the new fan speed will be
low fan speed (because 50 is between 35 and 55, irrespective of hysteresis), so the fan speed is ignored.
For example(2):
Take PM2.5 as an example
OFF<-> the threshold value of fan speed 1 is 20
Fan speed 1<-> the threshold of fan speed 2 is 40
Speed 2 <-> Speed 3
the threshold value is 70
Delay value is 10
When fan speed is increasing from OFF:
The OFF status will be turned when the control value is 30
(
≥20+10
)
When the control value 41 is received,the new speed will be at medium(because the delay is ignored
when the value 41 is between 40 to 70),therefore the low speed is ignored.
When the control value 39 is received,the new speed will be at low(because the delay is ignored
when the value 39 is between 20 to 40)
When Fan Speed decreasing from high:
The high speed will be turned when the control value is 60
(
<70-10
)
.
When the control value 39 is received,the new speed will be at low(because the delay is ignored
when the value 39 is between 20 to 40),therefore the medium speed is ignored.
3) When the control value is 0,the fan will be off at any circumstances.