Pump Cleaning - ABB ACQ80-04 Firmware Manual

36 Program features
pressure based flow feedback. The figure below shows the PQ performance curve of
the pump for the flow calculation function.
P [kW] or P
1
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


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.
4
3
2
5
(page 159).
3
Q [m /h] or Q