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Idiomas disponibles
8.7.43 Pump curve data (4.3.19)
Fig. 91 Pump curve data
Description
CU 352 has a number of functions using these pump data:
•
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
•
VFD minimum speed
•
VFD maximum speed
Grundfos can supply hydraulic data for CR, CRI,
CRE and CRIE pumps where GSC files can be
downloaded to CU 352.
All other pump types require manual entering of
hydraulic pump data.
Enter the electrical data, Power, Q0, 100 % speed
and Power, Q0, 50 % speed manually for all pump
types, including CR, CRI, CRE and CRIE.
For Grundfos E-pumps, enter the data of input power
(P1).
The VFD speed range is the range in which the VFD
is operating, so if the minimum and maximum speeds
are limited on the VFD, the values for the operating
range have to be entered in these fields.
Only used for EF systems. It is not used for E and EC
systems.
Read the data using the pump performance curves which can be
found in Grundfos Product Center at www.grundfos.com. See the
examples in figs
92
to 95.
If you cannot access Grundfos Product Center, try bringing a
pump into the three duty points:
•
Power, Q0, 100 % speed
•
Power, Q0, 50 % speed
•
Rated power Pnom.
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
– FD minimum speed
– VFD maximum speed.
54
8.7.44 How to read pump curve data
Read the power values in displays 1.3 to 1.8, depending on the
pump. See section
Hmax
Hnom
Fig. 92 Reading of Qnom, Hnom, Hmax and Qmax (Grundfos
Product Center)
3
[m
/h]
[m]
Duty point, Q0, 100 %
speed
[m]
3
[m
/h]
[kW]
[kW]
[kW]
[%]
[%]
Fig. 93 Reading of power, Q0, 100 % speed (Grundfos
Product Center)
8.4.10 Pump 1-6, Pilot pump (1.3 -
Rated duty point
Qnom
Power, Q0, 100 % speed
1.10).
Qmax
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