1.1 Normal working mode：FREQUNCY in the LCD display is setas 01. No matter whether there are AC loads connected to the inverter or not, theinverter’s output terminal will always have voltage ready to supply power tothe loads. Under this mode, the LCD will be displayed as bellow: 

1.2 Sleep mode：FREQUNCY in the LCD display is setas 02. If the power of the loads that connected to the inverter is lower than5% of the inverter’s rated power, there will be no output from theinverter. That is to say, only the chip of inverter is working under suchcondition and the power consumption is only 1-6W; If the power of the loadsthat connected to the inverter is higher than 5% of the inverter’s rated power, thenthe inverter will automatically start the inversion function and supply powerto the loads within 5s. As shown below:

2.  UPS function under utilitymode(connected to battery and utility .Can be set as utility first, batterystandby mode and battery first, utility standby mode).

2.1 Utility first, battery standby UPSmode: FREQUENCY in the LCD display is set as 01. When both utility and batteryare connected to the inverter, utility will supply power to the loadsprior to the battery. When utility is cut off, the battery will automaticallycontinue to supply power after inversion. 

Steps are as follows: 

Step 1: When utility power is available, it will output directly aftervoltagebeing stabilized and charge batteries at the same time. 

Step 2: When utility power is cut off suddenly, the inverter will convertDC power to AC power automatically to ensure uninterrupted power supply within5ms. 

Step 3: When utility power becomes available again, it will automaticallytransfer to utility supplying power to loads and charge batteries at the sametime. 

See Workflow as below. 

LCD displayed as bellow:

2.2 Battery first, utility standby UPSmode: FREQUENCY in the LCD display is set as 03.  When both utility andbattery are connected to the inverter, battery will supply power to theloads prior to utility. When battery capacity is not enough, utility willcontinue to supply power automatically. 

Steps are as follows: 

Step 1: When battery has enough power, it will supply power to the loadsdirectly 

Step 2: When battery does not have enough power, it will automaticallytransfer to utility supplying power to the loads 

Step 3: After the battery is fully charged (e.g. by solar or wind chargecontroller), it will then automatically transfer to battery supplyingpower to the loads. 

See Workflow as below. 

LCD displayed as bellow:

parameters