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5 - MEANING OF THE INDIVIDUAL PARAMETERS
The inverter makes the system work at constant pressure. This
regulation is appreciated if the hydraulic plant downstream from
the system is suitably sized. Plants made with pipes with too
small a section introduce load losses that the equipment cannot
compensate; the result is that the pressure is constant on the
sensors but not on the utility.
Plants that are excessively deformable can create the onset
of oscillations; if this occurs, the problem can be solved by
adjusting the control parameters “GP” and “GI” (see par 5.6.3
- GP: Proportional gain coefcient and 5.6.4 - GI: Integral gain
coefcient)
5.1 - User Menu
From the main menu, pressing the MODE key (or using the selection menu
and pressing + o - ), gives access to the USER MENU. In the menu the
MODE key allows you to scroll through the various menu pages. The val-
ues shown are the following.
5.1.1 - Status:
Displays the pump status.
5.1.2 - RS: Rotation speed display
Motor rotation speed in rpm..
5.1.3 - VP: Pressure display
Plant pressure measured in [bar] or [psi] depending on the measuring sys-
tem used.
5.1.4 - VF: Flow display
Displays the instantaneous ow in [litres/min] or [gal/min] depending on the
set measuring system.
5.1.5 - PO: Absorbed power display
Power absorbed by the electropump in [kW].
If the maximum allowed power is exceeded, the identication PO blinks.
5.1.6 - C1: Phase current display
Motor phase current in [A].
If the maximum allowed current is exceeded, the identication C1 blinks,
indicating an imminent tripping of the overload protection.
5.1.7 - SV: Supply voltage
Present only in some models.
5.1.8 - SR: Supply range
Present only in some models.
Indicates the range of supply voltage found. It may have the values: [110-
127] V or [220-240] V. If the range is not determined, it has the value “- -“.
5.1.9 - TE: Dissipator temperature display
5.1.10- PKm: Pressure measured at suction
Present only in models with Kiwa function
5.1.11 - Operating hours and number of starts
Indicates on three lines the hours that the device has been powered up,
the pump working hours and the number of starts of the motor.
5.1.12 - PI: Power histogram
A histogram of the power delivered is displayed on 5 vertical bars. The
histogram indicates how long the pump has been on at a given power
level. On the horizontal axis are the bars at the various power levels; on
the vertical axis, the time for which the pump has been on at the specic
power level (% of the time with respect to the total).
Figure 16: Power histogram display
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