ICAR RPA Instrucciones De Uso página 48

Note: The Band mode configuration does not consent to capacitive cosφ programming.
P.16 - Standard or Linear connection mode
In Standard mode, the regulator freely selects the steps according to the logic described
in the Automatic operation section above. In Linear mode, the steps are connected in
progression from left towards right only following the step number and according to the
LIFO (Last In First Out) logic. The controller will not connect a step when the system
steps are of different ratings and by connecting the next step, theset-point value would be
exceeded.
P.17 - Co-generation cosφ set-point
This parameter is programmed when a 4-quadrant operation is needed, that is in
conditions when the system is consuming the energy produced. When the parameter is
set to OFF, the cosφ set-point is the only one and corresponds to the value programmed
with SET COSφ (see page 37). On the other hand, when it is set to a numeric value then
the set-points are two: in normal conditions (system consumes mains energy, positive
cosφ), the set-point value is considered as programmed by SET COSφ. With co-
generation conditions (system produces energy, negative cosφ), it is used as
programmed at P.17.
P.18 - Disconnection sensitivity (available only on RPA)
With this parameter at OFF, the sensitivity value set at P.05 (see basic menu) adjust the
reactive speed both during the connection and disconnection phases.
However, if P.18 is set to a different value, the programmed value of P.05 is considered
for the connection while the P.18 value for the disconnection of the steps.
P.19 - Step disconnection at change to MANU mode
By enabling this parameter, the connected steps are disconnected in sequence when one
changes from AUTO to MANU mode. At the end of the disconnection, the normal manual
mode function is restored.
P.20 - Capacitor overload alarm threshold
By using this parameter, the tripping threshold of A07 alarm Capacitor Overload can be
adjusted. The percentage of current flowing in the capacitors (deduced by the waveform
of the phase voltage) is matched up to this threshold. If the threshold value is exceeded,
after the delay, the alarm is generated and the steps disconnected.
P.21 - Overload threshold for immediate step disconnection
When the measured overload exceeds thevalue set at P.21, the capacitors are
immediately disconnected and the P.21 capacitor overload alarm generated.
Note: The delay time of A07 Capacitor overload alarm operates inversely proportional to
the overload entity, compared to the programmed thresholds of P.20 and P.21. When the
overload is lower than the P.20 threshold, the alarm will not be generated. When the
overload is equal to P.20, the delay time is equal to the one set for the alarm (3 minutes
default but can be changed via PC). As the overload increases, the delay time becomes
proportionally less until it attains zero once the value set at P.21 is reached.
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