The inverter automatically regulates the rotation speed of the pump, shifting the work point, as necessary, to any part of the area subtended by
the maximum curve (100%).
Regulation during pumping can takes place in flow control mode or in fixed curve mode.
-
In "flow control" ("Flow") the system assesses the instantaneous flow of water and varies the pump speed so that the flow corresponds to the
setpoint, expressed in this case in "m
(ideally) on a vertical line, corresponding to the flow value chosen.
In "fixed curve" mode
-
positioned.
As can be seen in the figure, the operating point then moves following the trend of the curve chosen, which is similar to the trend
of fixed speed curves in traditional pumps.
Generally, when the work point falls below the maximum curve, the system reduces the absorbed power and thus decreases the energy
consumption.
The operating software is programmed to limit the motor rpm to a minimum value of 1260; in cases where the system's operating point is
theoretically below the range defined by this curve, the software may automatically raise other parameters (e.g. flow rate) above the set value to
make the system work within the above-mentioned limits.
5.1.2
Command modes
The system can operate in two control modes: "Manual" mode and "Auto" mode. In "Manual" mode:
the operator manually commands the switching on of the pup by pressing the keys from "SET1" to "SET4" or "QuickClean";
•
•
the LED next to the key that has been pressed lights up (for example, if "SET1" is pressed the LED above this key is lit).
In "Auto" mode:
•
switching on and off are automatically commanded by Timers, which can be programmed as desired on a weekly basis, or by signals
arriving from an external control unit ("EXT").
•
This mode is disabled when the system leaves the factory.
To activate it, you must first of all configure the necessary parameters (see 6.2.5 and 6.2.6), and then press the "Auto" key (the respective LED
lights up).
/h" (cubic metres per hour) or "GPM" (US gallons per minute). In this mode, the work point moves
3
the setpoint (expressed as a percentage
("Speed %"),
ENGLISH
E.SWIM 300
Figure 11
indicates the operating curve on which you want to be
"%")
15