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30
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7.2 Use of zero-export func�on
Pic 7.15 Meter switch
Pic 7.14 Parameter se�ng
System Param
Param
<<
Island
OFF
0FF <<
Meter
Run
When the connec�on is completed, the following steps should be refered to use this func�on:
1. Turn on the AC switch.
2. Turn on the DC switch, wai�ng for the inverter's LCD is turned on.
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 [running parameters] as shown
in picture 7.14, at this �me please input the default password 1234 through pressing the
bu�on [up down, enter], enter the opera�on parameter se�ng interface, shown as
picture 7.15.
Meter Power:
20W
Pic 7.16 Zero-export func�on via energy meter turn on
4. Operate the bu�on [up down], move se�ng cursor to energy meter and press the bu�on
[enter]. At this �me you can turn on or turn off the energy meter by choosing [up down]
bu�on, please press [enter] bu�on to confirm when se�ng done.
5. Move the cursor to [OK], 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 displays [meter power XXW], the zero-export
func�on se�ng is completed. Shown as picture 7.16.
7. Meter power XXW shows posi�ve means grid is supplying the load, and no power fed into
grid. if meter power shows nega�ve, it means PV energy is being sold to grid or energy meter
wiring connce�on has problem.
8. A�er properly connec�on is done, wait for inverter star�ng. If the power of the PV array
meets the current power consump�on, the inverter will keep a certain output to counteract
the power of the grid without backflow .