How to simply understand the three operating modes, self-powered, time-based control and backup mode?

1. Self-powered: The system firstly uses solar power and supply to the home loads, the excess solar power to charge the battery, if there still has excess solar power, it will be output to the grid according to the settings of feed-in percentage. If the solar power is not enough to power the load, battery will discharge to loads, if the battery power is still not enough, this time the power will be taken from the grid. The use of the grid will only happen when there are not enough solar power and battery power.
2. Time-based control: According to the requirements, you can set the battery charging and discharging time periods, such as charging the battery when the electricity price is low, and selling electricity when the price is high. The system supports four charging and discharging periods. During the discharge period, the battery can generate full power exporting to grid.
3. Backup: The critical loads need to be connected to the EPS port. Under normal circumstances, the battery will retain more than 80% SOC. After the power grid is cut off, the system will continuously supply power to the EPS critical loads.