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10.7 Menu INSTALLATION
10.7.1 Control mode (3.1)
Select one of the following control modes:
•
Open loop
•
Const. pressure
•
Const. diff. pressure
•
Prop. diff. pressure
•
Const. flow rate
•
Const. temperature
•
Constant level
•
Const. other value.
If the pump is connected to a bus, the control
mode cannot be selected via the CUE.
Note
See section 13.3 GENIbus signal.
10.7.2 Controller (3.2)
The CUE has a factory setting of gain (K
However, if the factory setting is not the optimum setting, the gain
and the integral time can be changed in the display.
•
The gain (K
) can be set within the range from 0.1 to 20.
p
•
The integral time (T
) can be set within the range from 0.1 to
i
3600 s. If 3600 s is selected, the controller will function as
a P controller.
•
Furthermore, it is possible to set the controller to inverse
control, meaning that if the setpoint is increased, the speed
will be reduced. In the case of inverse control, the gain (K
must be set within the range from –0.1 to –20.
The table below shows the suggested controller settings:
) and integral time (T
).
p
i
)
p
* T
System/application
Heating
system
CUE
p
SP, SP-G, SP-NE: 0.5
CUE
p
SP, SP-G, SP-NE: 0.5
CUE
Q
CUE
L
CUE
0.5
t
L
2
CUE
Δt
L
2
t
CUE
L
2
0.5
CUE
Δp
CUE
L
1
Δp
= 100 seconds (factory setting).
i
K
p
T
i
Cooling
1)
2)
system
0.2
0.5
0.5
0.2
0.5
0.5
0.2
0.5
–2.5
100
–0.5
10 + 5L
2
0.5
10 + 5L
2
–0.5
30 + 5L
*
2
0.5
0.5*
L
< 5 m: 0.5*
1
0.5
L
> 5 m: 3*
1
L
> 10 m: 5*
1
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