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3. Modesofoperation
There are 3 different modes of operation.
3.1 Normalmode
In this mode, the inverter works normally. Whenever the supplied power from PV panel is sufcient
(voltage>120VDC), the inverter converts power generated by the PV panel to the grid. If the power is insuf-
cient (voltage<100VDC), the inverter enters a “waiting” state. Whilst “waiting” the inverter uses just enough
power from the PV panel to monitor the internal system status. In normal mode the LED is green.
3.2 Faultmode
The internal intelligent controller can continuously monitor and adjust the system status. If the inverter detects
any unexpected conditions such as grid problems or internal failure, it will display the information on its LCD
and the LED will be red.
3.3 Shutdownmode
During periods of little or no sunlight, the inverter automatically stops running. In this mode, the inverter does
not take any power from the grid. The display and LEDs on the front panel do not work.
Note ! Operating the inverter is quite easy. During normal operation, the inverter runs automatically. However, to achieve maximum
inverter conversion efficiency, please read the following information:
3.4 AutomaticON-OFF
The inverter starts up automatically when DC power from the PV panel is sufcient.
Once the PV inverter starts it enters one of the following 3 states:
1. Standby: The PV string can only provide just enough voltage to meet the minimum requirements of the
controller.
2. Waiting: When the PV string DC voltage is greater than 100V, the inverter enters a enters a “waiting”
state and attempts to connect to the grid.
3. Normal operation (rst start up): When PV string DC voltage is greater than 150V, the inverter operates
in the normal state.
3.5 Starting-updisplaysequence
Once the PV power is sufcient, the inverter displays the following information:
Connect in xxS Connect OK Power: xxxx.xW
3.6 LCDbacklightcontrol
To save power, the LCD display’s backlight automatically turns off after 30 seconds.
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