MPP Solar 2424LV-HS User Manual page 43

7. LCD Setting and Display
Setting Program:
Program Description
AC output mode
*This setting is only
28 available when the
inverter is in standby
mode (Switch off).
PV judge condition
(Only apply for
30 setting "Solar first"
in program 1: Output
source priority)
Selectable option
Single:
Parallel:
L1 phase:
L2 phase:
L3 phase:
One Inverter
(Default):
All of Inverters:
41
When the units are used in parallel with
single phase, please select "PAL" in program
28.
It is required to have at least 3 inverters or
maximum 6 inverters to support
three-phase equipment. It's required to
have at least one inverter in each phase or
it's up to four inverters in one phase. Please
refers to 5-2 for detailed information.
Please select "3P1" in program 28 for the
inverters connected to L1 phase, "3P2" in
program 28 for the inverters connected to
L2 phase and "3P3" in program 28 for the
inverters connected to L3 phase.
Be sure to connect shared current cables to
units in the same phase.
Do NOT connect shared current cables
between units in different phases.
Besides, power saving function will be
automatically disabled.
When "ONE" is selected, as long as one of
the inverters has been connected to PV
modules and PV input is normal, parallel or
3-phase system will continue working
according to rule of "solar first" setting.
For example, two units are connected in
parallel and set "SOL" in output source
priority. If one of the two units has
connected to PV modules and PV input is
normal, the parallel system will provide
power to loads from solar or battery power.
If both of them are not sufficient, the
system will provide power to loads from
utility.
When "ALL" is selected, parallel or 3-phase
system will continue working according to
rule of "solar first" setting only when all of
inverters are connected to PV modules.
For example, two units are connected in
parallel and set "SOL" in output source
priority. When "ALL" is selected in program
30, it's necessary to have all inverters
connected to PV modules and PV input is
normal to allow the system to provide
power to loads from solar and battery
power. Otherwise, the system will provide
power to loads from utility.