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This mode works for applications with cheap utility power or using battery in power outages.
01 SOL: Solar Priority
In this mode, the solar energy provides power to the loads as the first power source.
If solar energy is insufficient, battery energy will be consumed.
Utility power will engage when one of below conditions happens:
1 Solar energy is not available (No PV production).
2 Battery voltage drops to either low-level warning voltage or the setting point in program 12 (DC to AC
Transfer Voltage in “SOL Priority”).
Once the solar power is lost, the utility will have higher priority than battery. This mode can be regarded as
“SUB”(Solar>Utility>Battery).
In this mode, the inverter will transfer between DC and AC as per the settings of program 12 and 13. Users
can set it to utility priority to stop the cycling.
01 SbU: SBU Priority
As indicated by the abbreviation, the power priority comes as solar>battery>utility.
Solar energy provides power as first priority.
If solar energy is insufficient, battery energy will be consumed.
Utility provides power to the loads only when battery voltage drops to either low-level warning voltage or
the setting point in program 12(DC to AC Transfer Voltage in “SBU Priority”).
When solar is gone in SBU mode, the power priority becomes battery>utility, battery priority is higher than
utility priority.
In this mode, the inverter will transfer between DC and AC as per the settings of program 12 and 13. Users
can set it to utility priority to stop the cycling.
Note: When the inverter power priority mode is changed between the three different modes, the
setting of other programs will be saved with the associated power priority mode.
Program 02: Maximum Charging Current
6KW model: default 80A, 10A~140A Settable
12KW model: default 80A, 10A~180A Settable
(Note: the max charging current is not the simple sum up of utility charging c solar charging current
for M12048D)
The MPPT charger will stop when charging is completed. To activate the charger, the battery voltage must
drop at least 2 voltages below the lower value in program 19 and 20.
Program 03: AC Input Voltage Range
The AC Input voltage range in program 03 means the acceptable AC input voltage for load bypassing, it is
wider than the “utility charger voltage”
There are two selectable AC input bypass ranges, Appliance Mode and UPS Mode.
The Appliance Mode will give the appliance the maximum amount of power by accepting a wider range of
voltage than UPS Mode.
AC Input Bypass Voltage
Utility Charger Voltage
AC Input Frequency
Appliance Mode
154~272Vac±5V
164~262Vac±5V(Recover)
154V-260Vac
164V-250Vac(Recovery)
45-65Hz
47-63Hz(Recovery)
UPS Mode
184~272Vac±5V
194~262Vac±5V(Recover)
184V-260Vac
194-250Vac(Recovery)
45-65Hz
47-63Hz(Recovery)
