KSB PumpDrive 2 - Energy Optimisation; Open Piping System; Pressure Control with Dynamic Pressure Compensation in Open System

8 Commissioning/Shutdown
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PumpDrive 2
Parameter Description Possible settings Factory setting
3-5-2-3 Height Difference, Pressure Measuring
Points
Difference in height between suction and
discharge pressure measuring point
-10...10m 0,0m
3-5-2-4 Pressure Measuring Point Positions
The Close to Pump setting must be used if
the pressure measurement values for the
system can be transferred to the pump.
▪ Close to Pump
▪ Distant from Pump
Close to Pump
8.8.4 Energy optimisation
8.8.4.1 Pressure/differential pressure control with dynamic pressure setpoint
compensation
Dynamic pressure compensation makes it possible to supply a distant consumer with
largely constant pressure, irrespective of the flow, when pump-end pressure sensors
are used. This is achieved by increasing the pump's pressure setpoint as the flow rate
increases in order to compensate for the rising pressure losses in the piping.
Open piping system
Q
p
Q
p
Q
∆p
1
2
3
Fig.67: Pressure control with dynamic pressure compensation in open system
1 Pump set with diagram of flow rate-dependent setpoint
2 Piping with diagram of pressure losses
3 Consumer with diagram of inlet pressure
The discharge pressure of the pump (1) can be used in open piping systems to achieve
an almost constant pressure upstream of the consumer (3).