7.3 Power factor correction settings
7.3.1 Cosphi setpoint
The default value is "0.98", inductive. The permitted range for the numerical value is [0.50÷1]. In addition, both an
inductive or capacitive load can be set.
NOTE: This parameter, together with the Cosphi setpoint tolerance define together the value range within which
the controller will consider system as corrected and, consequently, also the activation thresholds for the power factor
correction failed and power factor overcorrection alarms. For further details, refer to Chap. 7.3.2 .
If a permitted value is entered, the controller will move to the next parameter setting screen (Cosphi setpoint
tolerance).
7.3.2 Cosphi setpoint tolerance
The default value is "0.03". The permitted range for the parameter is [0.01÷0.1].
Together with the Cosphi setpoint, this parameter defines the range of values within which the controller will
consider system corrected. For example, with cosphi setpoint = 0.97 inductive and cosphi setpoint tolerance = 0.02, the
controller will try to reach a cosphi value between 0.95 inductive and 0.99 inductive. In these conditions: with a cosphi
value < 0.95 the controller will connect a capacitor bank (or will display under-compensation error after the time set by
parameter P.23 – Power factor correction failed alarm delay (Chap. 7.6) in which the value remains continuously out
of tolerance) with a cosphi value of 1.00 or with a capacitive cosphi value, the controller will disconnect a capacitor bank
(or will display over-compensation error after the time set by parameter P.22 – Power factor overcorrection alarm
delay (Chap. 7.6) in which the value remains continuously out of tolerance).
If a permitted value is entered, the controller will move to the next parameter setting screen (Re-connection time).
7.3.3 Average measurement time
The default value is "15". The permitted range for the parameter is [1÷60] minutes.
Example: if it is necessary to obtain the average value of powers every 5 minutes set the value 5.
NOTE: average values are only available via the communication interfaces RS485 and Radio 868MHz for the
provided models.
If a permitted value is entered, the controller will move to the next parameter setting screen (Protocol).
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