Italtecnica Sirio Manuel D'instructions page 10

DESCRIPTION OF THE PARAMETERS AND SCREEN PAGES
MAIN MENU:
These screen pages are accessible when the device is on.
60 PSI
[140Hz]
60 PSI
Stand-by
V= 230V
I= 5.0A
Ti= 35° C
Ta= 35° C
Language
EN
INSTALLER PARAMETERS:
These parameters can be found on hidden pages and usually they should only be changed in the installation phase. To access these
pages switch the device to Stand-by and keep the "+" and "-"buttons pressed down together for 5 seconds. Once you have entered the
hidden menu, use the"<<" and ">>" buttons to scroll the pages and the "+" and "-" buttons to change the parameters. To return to the
main page press the button in the centre. Some parameters may not be displayed if the relative function is not enabled.
Pmax
60 PSI
Sirio switches off the pump when the flow of water passing through it falls below the minimum values (approx. 2 litres/minute)
irrespective of the pressure reached in the system.
Dp.start
6 PSI
possible to that set in the parameter Pmax. The minimum differential settable between Pmax and Pmin is 3 PSI, with the
recommended value being at least 6 PSI.
P.dr.ru.
10 PSI
P.limit
140 PSI
Pmax2:
140 PSI
Main screen page: when Sirio is operating correctly, the first line of the display shows the
instantaneous pressure detected by the system; the second line shows the current frequency of the
motor. From here, it is possible to scroll through the main menu using the arrows, or put the system
in "Stand-by" by pressing the central "on-off" key
When Sirio is in stand-by, the pump will not start up even if the pressure drops below the "Pmin"
value set. To exit stand-by, press the central button again. By holding down the "+" button, the
pump is brought up to the maximum operating speed, overriding the dry running protection (use
this function to fill the pump on initial start-up).
Voltage and current screen: on this page of the menu it is possible to view the input voltage to
the inverter and the current absorbed by the motor. The value of the output current to the motor
may differ from the value of the input current as the inverter modulates both frequency and
voltage.
Temperature screen: this displays the ambient temperatures inside the inverter and the IGBT
power module. The values of these temperatures contribute to the intelligent power management
which limits the value of the maximum frequency of the motor when the pre-alarm thresholds are
reached.
Language: The language used for the menus and the alarm messages can be selected by the user.
Use the + and – buttons to alter the parameter setting.
Pmax: this parameter enables entry of the set-point value of the device. It is a constant pressure
value required by the system (maximum pressure). During its operation Sirio regulates the revs of
the electric pump to adapt them to the actual required flow-rate, therefore maintaining the constant
pressure of the system. When it is necessary to set the Pmax to a value higher than the maximum
pump head, motor shut down on valve closure is only guaranteed if the flow switch is activated, as
Delta P start-up: this parameter sets the delta negative of pressure compared to Pmax for the start-
up of the pump. On opening of any type of utility, the pump will not start-up until the system
pressure has fallen below Pmax by a value equal to the delta set in this parameter. After the motor
is started up, the operating rotation speed is controlled to maintain the pressure value as close as
Dry-running pressure: this parameter only affects operation with the flow switch deactivated.
Define the minimum pressure value below which, with the motor at maximum frequency, the
protection against dry-running triggers.
Pressure limit: this parameter sets the threshold for the overpressure protection intervention.
The overpressure protection intervention stops the inverter until the user resets it.
Pmax2: this parameter enables entry of the secondary set-point of the device. When the auxiliary
contact (or the auxiliary I/O board input) is closed externally, the pressure value set in Pmax2
becomes the new set-point, according to which Sirio regulates the revs of the electric pump.
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