Inhaltsverzeichnis
Werbung
Verfügbare Sprachen
Verfügbare Sprachen
H
[m]
60
50
SP
40
A
30
20
10
Fig. 54 Automatic adaptation of proportional-pressure curve
Pos.
Description
Pressure at 0 flow. Starting point of proportional-
A
pressure control.
B1
System characteristics 1
B2
System characteristics 2
B3
System characteristics 3
C
Proportional-pressure curve
D
Required minimum pressure at pumping station
E
Required minimum pressure at remote sensors
The function has these purposes:
•
to increase the comfort for the user
•
to reduce pipe leakages
•
to minimise pipe wear
•
to reduce energy consumption.
Setting range
•
Selection of control mode.
•
Minimum discharge pressure.
Setting via operating panel
•
Settings > Primary controller > Proportional pressure.
1. Select: Automatic adaptation: Enabled.
2. Set: Minimum discharge pressure.
Manual adaptation
Set the function to "Manual adaptation" to set the controller to
automatically adapt the setpoint to the actual flow rate to
compensate for flow-dependent dynamic losses. In systems with
CR pumps, the pump curves can be used to calculate the
maximum flow rate at the selected setpoint. A filter factor can be
set to prevent fluctuation.
Fig. 55 Manual adaptation of proportional pressure
The adaptation can be linear or square. See fig. 55.
32
B1
B2
B3
C
D
E
Q
H
C
B
A
Fig. 56 Proportional pressure, manual adaptation
Pos.
Description
Pressure at 0 flow. Starting point of proportional-
A
pressure control (influence at 0 flow = x % of setpoint)
B
Qpmax
C
Setpoint
The function has these purposes:
•
to compensate for pressure losses
•
to reduce the energy consumption
•
to increase the comfort for the user.
Setting range
•
Selection of control mode
•
Influence at 0 flow
•
Estimated flow rate
•
Filter factor.
Setting via operating panel
•
Settings > Primary controller > Proportional pressure.
1. Select: Enabled.
2. Select:
•
Adaptation
•
Linear / Square.
3. Set: Influence at 0 flow.
4. Set: Filter factor.
5. Select: Use pump curve or Enter value.
6. Set "Qpmax" if you select "Enter value".
Factory setting
Automatic adaptation.
Q
Werbung
Kapitel
Inhaltsverzeichnis
