Pump Control Quick Guide
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This control system consists on a regulated pump controlled exclusively by the inverter and other 5 pumps
working in “On-Off control” mode connected directly to the commercial power supply (4 auxiliary pumps +
1 additional pump). The inverter will connect/disconnect the auxiliary pumps to the commercial power
supply in order to achieve the desired pressure.
The additional pump will be connected to the commercial power supply if the following two conditions are
fulfilled:
1. All the 4 auxiliary pumps are connected to the commercial power supply, and
2. The regulated pump’s frequency is higher than the value stored in E31 (Hz).
The additional pump will be disconnected from the commercial power supply when:
Output frequency ≤ (E31 – E32)
Using this control, the
inverter is able to control up to 6 pumps.
Figure 3.2: Connection schematic of the additional pump
t
ON
ON
ON
ON
ADDITIONAL PUMP
Figure 3.3: Additional pump’s connection/disconnection diagram
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