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6.5.3 FN: Rated frequency settings
This parameter defines the rated frequency of the electric pump, and can be set from a minimum of 50 [Hz] and
maximum of 200 [Hz]. In the case of a type M/M inverter, the FN setting may be 50 or 60 Hz.
Press "+" or "-" to selected the required frequency starting from 50 [Hz].
The values 50 and 60 [Hz] have priority over other selections as they are the most common: on entry of any frequency
value, when the value 50 or 60 [Hz] is reached, the increment or decrement stops; to modify the frequency from one of
these two values, release each button and then press "+" or "-" for at least 3 seconds.
Each modification to FN is interpreted as a system change, and therefore the parameters FS, FL and FP are adjusted
automatically according to the set FN. On each variation to FN re-check FS, FL, FP to ensure settings are as required.
6.5.4 UN: Setting the rated voltage
This parameter is present only on type M/M inverters, size 11 and 14 [A].
It defines the rated voltage of the electropump and may be set on two possible values:
110/127 V
220/240 V
6.5.5 OD: Type of system
Set with two possible values (1 and 2) according to a rigid or flexible system.
The inverter leaves the factory set to mode 1, suited to most systems. In the event of pressure variations that cannot
be stabilised by adjusting parameters GI and GP, switch to mode 2.
IMPORTANT: In the two configurations, the values of adjustment parameters GP and GI also change. Furthermore,
the values of GP and GI set in mode 1 are stored in a different memory from the GP and GI values
set in mode 2. Therefore, for example, the value of GP in mode 1, when switching to mode 2, is
replaced by the GP value of mode 2, but is stored and restored on return to mode 1. The same value
seen on display has a different meaning in each of the modes, as the check algorithm is different.
6.5.6 RP: Setting the pressure drop for restart
This shows the drop in pressure, with respect to the value SP which causes pump restart.
For example, if the setpoint pressure is 3.0 [bar] and RP is 0.5 [bar] the pump is restarted at 2.5 [bar].
RP is normally set from a minimum of 0.1 to maximum 5 [bar]. In special conditions (for example in the case of a
setpoint lower than RP) this can be limited automatically.
To facilitate the work of the user, the RP setting page, highlighted below the symbol RP, shows the effective restart
pressure; see Figure 11.
6.5.7 AD: Address configuration
This is only applicable on multi-inverter systems. It sets the communication address to be assigned to the inverter.
The possible values are: automatic (default), or manually assigned address.
The manually assigned addresses can have values from 1 to 8. Configuration of the addresses must be uniform for all
inverters in the series: either all automatic or all manual. Identical addresses are not admitted.
If the address assignment modes are mixed (some manual and some automatic), and also if an address is duplicated,
the relative error is shown. The error is indicated with a flashing "E" in place of the unit address.
If selected assignment is automatic, each time the system is turned on, the addresses are assigned automatically and
may be different from the previous time; this has no effect on correct operation.
6.5.8 PR: Pressure sensor
The sensor must be connected to the specific input (See par. 2.3.5)
The PR parameter is used to select a remote pressure sensor. The default setting is with no sensor present.
When the sensor is active, the display shows an icon of a stylised sensor with a P inside it.
The remote pressure sensor operates in synergy with the internal sensor so that the pressure never falls below the
setpoint pressure in either of the two points in the system (internal and remote sensors). This allows compensation for
any pressure drops.
NOTE: in order to maintain the setpoint pressure in the point with lower pressure, the pressure in the other point may
be higher than the setpoint pressure.
ENGLISH
Figure 10: Setting the restart pressure
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