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3.2.2.
Maximum PV System Power
This MPPT controller has a function to limit the charging current. The charging current is limited
within the rated range, so the controller charges the battery with the rated current even if the input
power from the PV module exceeds this limit.
The current operating power of the PV system follows the conditions stated below:
1) Current power PV system
≤
controller rated power, the controller charges the battery according
to current Maximum Power Point.
2) Current PV system power > controller rated power, the controller charges the battery according
to current maximum rated power.
If the PV power exceeds than the maximum rated controller power, the charging time at rated power
is longer, and more energy is stored in the battery.
WARNING
The controller has a maximum PV rated input power (Watt) and allows the PV
power to be higher than the rated power. However, once the PV power is three
times higher than the rated power, the controller will be damaged.
WARNING
If the PV system is connected in anti-parallel to the controller, 1.5 times the rated
power (watts) will damage the controller.
In addition to the above power limitation, when sizing a PV system for a charge controller, be sure to
select PV panels that combined (or individually) will not exceed the maximum input current (Isc) as
well as the rated open circuit voltage (Voc) of the controller. Refer to the technical data of the
respective MPPT PRO-X model.
MPPT PRO-X 10A / 20A
max 100V (Voc)
①
max 92V (Voc)
②
MPPT PRO-X 30A / 40A
max 150V (Voc)
①
max 138V (Voc)
②
①
At minimum ambient operating temperature.
②
At an ambient temperature of 25
℃
WARNING
The controller may be damaged if the maximum PV open-circuit voltage (Voc) is
exceeded at the minimum operating ambient temperature.
