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Press the bu�on of the limiter to the se�ng interface. Long press the bu�on to switch the
an�-backflow mode. The limiter has two an�-backfolw modes, the minimum mode and the
average mode. In the minimum mode, the limiter will control the power of the inverter according
to the phase with the lowest power to ensure that no reverse current will occur in each phase. In
average mode, The limiter controls the output of the inverter according to the average of the
total power of the three-phase load, which may cause single backflow. The controller is produced
in the minimum mode to ensure no an�-backflow happens to the customers.
When the connec�on is completed, the following steps should be referenced to use this func�on:
1. Turn on the AC switch.
2. Turn on the DC switch, Wai�ng inverter LCD ligh�ng up.
3. Press Enter bu�on on the LCD panel in the main interface into the menu op�ons, select
[parameter se�ng] to Enter setup submenu, and then select [run param], at this �me please Input
the default password 1234 through pressing the bu�on [up down, confirm], enter the opera�on
parameter se�ng interface, Shown as figure:
Pic 7.8 Zero-export func�on via SUN limiter se�ng interface
7.3 Debugging Limiter
Turn on the an�-backflow func�on of the inverter refer to the manual , then turn on the limiter's
power supply, and last turn on the inverter.
MENU》Setup》Run Param
OK
Cancel
ActiveP 100%
ReactiveP 0.0%
PF 1.000
Fun_ISO OFF
Fun_RCD OFF
SelfCheck 10S
Island OFF
Meter OFF
Limiter ON
E_Coef 0.00
Meter_CT 0
MPPT Num 3
4. Operate the bu�on [up down], move se�ng cursor to limit func�on and press the bu�on [enter].
At this �me you can turn on or turn off the limit func�on by choosing [up down] bu�on, please
press [enter] bu�on to confirm when se�ng done.
5. Move the cursor to [confirm] , press ENTER to save the se�ngs and exit the running parameters
page, otherwise the se�ngs are invalid.
6.If set up successfully, you can return to the menu interface, and display the LCD to [home page]
by press the [up down] bu�on. If it displayed as [u�lity power], the limiter func�on se�ngs will
be completed. Shown as picture 7.9.
