Pump Control Quick Guide
16
Mono-regulated pump control involves a pump exclusively driven by the inverter and other(s) pump(s),
working in “On-Off control” mode and directly connected to the commercial power supply.
The inverter will connect/disconnect the auxiliary pump(s) to the commercial power supply, in order to
achieve the desired pressure.
By means of the keypad, digital input or analog command, the desired system pressure will be set. Then,
the inverter will modify the speed of the regulated pump between the minimum frequency (J19 = F16)
and a maximum frequency (J18 = F15 = F03), keeping the pressure under control.
The inverter’s PID control must be activated (J01) and adjusted accordingly, ensuring the inverter’s
response is what the installation requires all the time.
PID control action can be adjusted by means of function codes J03 and J04 (proportional gain and integral
time).
Connection/Disconnection of an auxiliary pump is shown in Figure 2.5, with all the related function codes.
Pressure required (SV)
t
t
t
t
ON
J43
ON ON
t
REGULATED PUMP ON
J19
J34
J35
J37
J36
J18
Figure 2.5: Speed pattern with mono-regulated pump control.
The Auxiliary pump is connected and disconnected
To Next Page
Loading...
