Grundfos CONTROL MPC User Manual

46
11.7.37 Pump curve data (4.3.19)
Fig. 78 Pump curve data
Description
The CU 351 has a number of functions using these pump data:
• Nominal flow rate, Q
nom
, in m
3
/h
• Nominal head, H
nom
, in metres
• Max. head, H
max
, in metres
• Max. flow rate, Q
max,
in m
3
/h
•Power, Q
0
, 100 %, speed in kW
•Power, Q
0
, 50 % speed, in kW
• Nominal power, P
nom
, in kW.
The data are read by means of the pump performance curves
which can be found in WebCAPS on Grundfos’ homepage,
www.grundfos.com. See examples in figs 79 to 82.
If WebCAPS is not accessible, try to bring a pump into the three
duty points: Power, Q
0
, 100 % speed, Power, Q
0
, 50 % speed and
Nominal power, Pnom. Read the power values in displays 1.3 to
1.8, depending on the pump. See section 11.4.8 Pump 1...6 (1.3
to 1.8).
Fig. 79 Reading of Q
nom
, H
nom
, H
max
and Q
max
(WebCAPS)
a
Fig. 80 Reading of Power, Q0, 100 % speed (WebCAPS)
Fig. 81 Reading of Power, Q0, 50 % speed (WebCAPS)
Fig. 82 Reading of Nominal power, P
nom
(WebCAPS)
TM03 8975 4807
Note
Grundfos can supply hydraulic data for CR, CRI,
CRE and CRIE pumps where GSC files can be
downloaded directly to the CU 351.
All other pump types require manual entering of
hydraulic pump data.
Note
The electrical data, "Power, Q
0
, 100 % speed" and
"Power, Q
0
, 50 % speed" must be entered
manually for all pump types, including CR, CRI,
CRE and CRIE.
For Grundfos E-pumps, the data of input power
(P1) must be entered.
TM03 9993 4807
Nominal duty point
H
nom
Q
nom
Q
max
H
max
TM03 9994 4807TM03 9995 4807TM03 9996 4807
Note
Q
nom
and H
nom
are the rated duty point of the
pumps and usually the duty point with the
highest efficiency.
Power, Q0, 100 % speed
Duty point, Q0,
100 % speed
Power, Q0, 50 % speed
Duty point, Q0, 50 % speed
Duty point, Nominal
power, P
nom
Nominal power, P
nom

Grundfos CONTROL MPC Specifications

General

Brand	Grundfos
Model	CONTROL MPC
Category	Control Systems
Language	English