KSB PumpDrive - 7.2.2.2 Characteristic curve control based on the flow rate (Advanced function)

Parameter Description Possible settings Unit Factory
setting
33)
Min. Max.
3-12-3-14 H_0 0 9999 m 0
3-12-3-15 H_1 0 9999 m 0
3-12-3-16 H_2 0 9999 m 0
3-12-3-17 H_3 0 9999 m 0
3-12-3-18 H_4 0 9999 m 0
3-12-3-19 H_5 0 9999 m 0
3-12-3-20 H_6 0 9999 m 0
3-12-3-21 P_0 0 999 kW 0
3-12-3-22 P_1 0 999 kW 0
3-12-3-23 P_2 0 999 kW 0
3-12-3-24 P_3 0 999 kW 0
3-12-3-25 P_4 0 999 kW 0
3-12-3-26 P_5 0 999 kW 0
3-12-3-27 P_6 0 999 kW 0
7.2.2.2 Characteristic curve control based on the flow rate (Advanced function)
Characteristic curve control provides effective protection of the pump against
hydraulic overload or low load on the basis of the current flow rate. The current flow
rate for characteristic curve control can be determined by two methods:
▪ Measured: Via a flow rate sensor
▪ Estimated: Based on the pump characteristic curve parameterised (H/Q or P/Q).
For parameterising the pump characteristic curve/flow rate estimation (⇨ Section
7.2.2.1 Page 76) and (⇨ Section 7.2.2.3.1 Page 80)
If impermissible operating conditions are detected, PumpDrive can, after a specified
time delay, respond either with a warning or by tripping (Stop&Trip) or not respond
at all. (⇨ Section 7.2.3 Page 82)
In order to prevent starting and stopping of pumps in a multiple pump configuration
via flow rate estimation within the scope of characteristic curve control, the Q Hi
Timeout Fn
(3-12-4-3) and Q Lo Timeout Fn (3-12-4-6) parameters must be set to No
Function in a multiple pump configuration, as otherwise the control quality will be
impaired.
Multiple pump
configuration
33)
Pump-specific values are preset during factory parameterisation.
7 Commissioning/shutdown
78 of 162
PumpDrive