Program features 33
Settings
Flow calculation
The flow calculation function provides a reasonably accurate calculation of the flow without
the installation of a separate flow meter. The function defines the flow estimate using the
pump performance curve and drive actual load. The PQ (power/flow) performance curve
enables calculating the flow output from the pump. The performance curve is provided by
the pump manufacturer. The user saves five operating points (P,Q) of the performance
curve to drive parameters.
PQ curve
The solar pump inverter records and stores the flow rate on each day and provides the
required data for current day and current year.
Note:
• The flow calculations are available only with assistant control panel. Ensure that the
assistant control panel is attached before starting the inverter.
• Do not use the flow calculation function outside the normal operating range of the
pump.
• Do not use the flow calculation function for invoicing purposes.
• Ensure that power and flow points are in incremental order with non-zero values.
Parameter Additional information
6006 PUMP MINIMUM SPD
Minimum motor speed allowed.
6007 PUMP MAXIMUM SPD
Maximum motor speed allowed.
2002 MAXIMUM SPEED
Maximum speed limit.
6105
6101
6111
P[kW]
1
2
3
4
5
Q[m
3
/h]
6115
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