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EN
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User’s Manual
24
Y
min
- min. value of subtracted frequency (no frost protecting
action) -
fi
xed at 0Hz
Y
max
- max. value of subtracted frequency (max. frost
protecting action)
Range: 0..50Hz
Default: 5Hz
Parametric volume control
– special regulator for
automatic adjustment of the fan speed according to external
measurement of
fl
ow or pressure. The input
K
p
- proportional gain
T
i
- integrational time
Ymin
- min. value –
fi
xed at min fan rate setting
Ymax
- max. value – limited by fan rate setpoint for current
mode Low / Econo / Comfort
Setpoints Low / Econo / Comfort
– setpoints for each mode
HMI ADVANCED
FAN PI REGULATORS
Parametric volume control
K
p
T
i
Y
min
Y
max
Setpoints
Low
Eco
Comf
3.5.15. SETTINGS
PRESSURE PI REGULATORS
Air
fl
ow
- automatic adjustment of the fan speed according to
measurement of pressure
• KP
- proportional gain
• Ti
- integrational time
□
- work information
HMI ADVANCED
FAN PI REGULATORS
supply fan
□
054.2 %
Kp
000.2
Ti
030.0 s
exhaust fan
□
054.2 %
Kp
000.2
Ti
030.0 s
3.5.16. SETTINGS
TEMP PI REGULATORS
There are alltogether 9 regulators for temperature control.
Mostly all of them allow for the same adjustments:
K
p
- proportional gain
T
i
- integrational time
Y
min
- min. value ofr the output
Y
max
- max. value of the output
The regulators are:
Min sup temp
– regulator of min. supply temperature limit
Max sup temp
– regulator of max. supply temperature limit
HMI ADVANCED
TEMP PI REGULATORS
Min sup temp
Kp
T
i
Ymin
Y
max
Max sup temp
K
p
T
i
Y
min
Y
max
Heating
– regulator for main heater
Back water
– regulator for limiting return water temperature in
heater protective mode in stopped AHU
HMI ADVANCED
TEMP PI REGULATORS
Heating
K
p
T
i
Y
min
Y
max
Back-water
K
p
T
i
Y
min
Y
max