ABB ACQ80-04 Series, Руководство по прошивке

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36 Program features
pressure based flow feedback. The figure below shows the PQ performance curve of
the pump for the flow calculation function.
Notes:
• The flow calculation function cannot be used for invoicing purposes.
• The flow calculation function cannot be used outside the normal operating range
of the pump.
• Power points in PQ curve are expected to be in ascending order (P1 < P2 < P3 <
P4 < P5).
• Flow points in PQ curve are expected to be in ascending order (Q1 < Q2 <Q3 <
• Q4 < Q5).
Settings
Parameter group 80 Flow calculation (page 159 ).

Pump cleaning
The pump cleaning function is mainly used in wastewater applications to prevent
solid particles obstructions on the pump impellers or in the piping. This function
consists of a programmable sequence of forward and reverse rotations of the pump
and helps to remove any residue or rags on the impeller or piping.
Note: Pump cleaning function works only in remote mode.
The main features of pump cleaning function are:
• prevents blockages and decreases the need of manual cleaning
• increases the lifetime of the pump, pipes and impellers, and
• improves energy efficiency of the system.
Pump cleaning sequence
The drive starts cleaning with a pulse in the opposite direction of the running
direction. The speed step size is same for both positive and negative directions.
P [kW] or P
Q [m
3
/h] or Q
2
4
5
3
1
ACQ80 FW.book Page 36 Thursday, February 14, 2019 11:33 AM