Grundfos Control MPC 2000 Series, Installation And Operating Instructions Manual

Page: 55 / 528

English (GB)
55
Fig. 94 Reading of power, Q0, 50 % speed (Grundfos Product
Center)
Fig. 95 Reading of rated power Pnom (Grundfos Product
Center)
Setting via the operating panel
• Settings > Secondary functions > Pump curve data.
• Select and set:
– Rated flow rate Qnom
– Rated head Hnom
– Max. head Hmax
– Max. flow rate Qmax
– Power, Q0, 100 % speed
– Power, Q0, 50 % speed
– Rated power Pnom.
8.7.45 Control source (4.3.20)
Fig. 96 Control source
Description
The system can be remote-controlled via an external bus
connection (option). See section
7. Click [Apply]. For further
information, see section 8.8 Data communication .
Select the control source, that is either CU 352 or the external
bus connection.
Setting via the operating panel
• Settings > Secondary functions > Control source.
Factory setting
The control source is CU 352.
8.7.46 Fixed inlet pressure (4.3.22)
Fig. 97 Fixed inlet pressure
Description
The function is only used when no inlet-pressure sensor is fitted
in the system and the inlet pressure is fixed and known.
If the booster system has a fixed inlet pressure, you can enter it in
the display so that CU 352 can optimise the performance and
control of the system.
Setting range
A fixed inlet pressure can be set, and the function can be enabled
and disabled.
Setting via the operating panel
• Settings > Secondary functions > Fixed inlet pressure.
• Select: Enabled or Disabled.
• Set: Fixed inlet pressure.
Factory setting
The function is disabled.
TM
0
3
9
995
4
807
TM0
3
999
6 4
8
0
7
Qnom and Hnom are the rated duty point of the
pumps and usually the duty point with the highest
efficiency.
Power, Q0, 50 % speed
Duty point, Q0, 50 %
speed
Duty point, rated
power Pnom
Rated power Pnom