Action Instruction LCD display
Long press“Down”button until the icon in
the red box in the right picture flashes,
indicating that the inverter is trying to
communicate with MPPT. The icon
disappears after the inverter loosens
the button for 10 seconds.
Matching
MPPT
function is
prohibited
8.3 Matching MPPT function successfully enabled:
Action Instruction LCD display
If MPPT is in charging state
：
When the
MPPT function is successfully enabled,
the icon in the red box in the right picture
will appear
Match MPPT
function to enable
successfully
If MPPT is not in the charging state, but
PV voltage is greater than 30V and is in
the startup state
：
When the MPPT
function is successfully enabled, the
icon in the red box in the right picture
will appear
Match MPPT
function to enable
successfully
8.4 Matching MPPT function is prohibited successfully:
Action Instruction LCD display
When the matching MPPT function is
prohibited successfully
，
MPPT icon
information will no longer be displayed
Match MPPT
function
1. If the MPPT function is enabled, the
LCD interface page turning will display
PV voltage, power and other information
；
2. If the matching MPPT function is
prohibited, the LCD interface page
turning will not display PV voltage,
power and other information
；
Whether matching
MPPT function
enables judgment
INPUT
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INPUT
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INPUT
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INPUT
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PV
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19
MPPT solar charge controller
8.MPPT charger controller match to the Inverter
In actual application system, MPPT controller and inverter will charge the battery at the same
time, the charging current will excessive to occur unsafe situation, so we add the function of
matching the inverter to limit the charging current of the battery. However, since it needs to be
matched with MPPT of different manufacturers , but the MPPT charging current cannot be limited.
The current solution is to limit the charging current of the inverter.
The inverter match to the MPPT controller is mainly including two function:
1.Enabling or disable inverter to match the MPPT function. (Special attention: when upgrading
the firmware of the inverter, it needs to disable the function matching MPPT first);
2.Limited the charging current of the inverter. The methods are as follows:
a) When the MPPT charging current ≥ inverter setting charging current, the maximum allowable
charging current of the inverter equal to 0;
b) When the MPPT charging current
＜
inverter setting charging current, the maximum allowable
charging current of the inverter equal to inverter setting charging current subtract MPPT
charging current;
8.1 Match the inveter to the MPPT controller:
1.To enable the inverter to match the MPPT controller, the inverter and MPPT controller should be
switched on first, and the communication lines between them have been connected;
2.Then press the “Down”button of the inverter for more than 2.5 seconds, until the MPPT charger icon
flashes. At this time, you can release the button. The icon flashing indicates that the inverter is trying to
communicate with the MPPT. The inverter is releasing. After pressing the button for 10 seconds, the
icon stops flashing. When the communication is successful, it means that the function is successfully
enabled.
3.After successfully enabling, the matching MPPT function flag will be saved in the EEPROM. Restarting
the inverter does not need to be manually enabled again.
4.After successfully enabling, turning the page on the LCD screen will display MPPT PV voltage, power
and other information.
Action Instruction LCD display
Long press “Down”button until the
icon in the red box in the right picture
flashes, indicating that the inverter is
trying to communicate with MPPT. The
icon stops flashing after the inverter
loosens the button for 10 seconds.
Match the MPPT
function enable
8.2 Matching MPPT function is prohibited:
1.To prevent the inverter from matching the MPPT function, the MPPT should be turned off or the
communication connection between the two should be disconnected.
2.Then long press the “Down”button of the inverter for more than 2.5 second, until the MPPT charger
icon flashes. At this point, the button can be released. The flashing icon indicates that the inverter is
trying to communicate with MPPT. The flashing icon will stop 10 seconds after the button is released.
When communication fails, it means it is forbidden successfully.
INPUT
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MPPT solar charge controller
