8
3. MODES OF OPERATION
There are 5 different modes of operation.
Standby mode
If the voltage from the photovoltaic panels is <100VDC the inverter has just enough power to start-up the internal controller, but
the voltage is too low to start energy conversion.
Waiting mode
When the voltage from the photovoltaic panels is >100VDC, the inverter enters a “waiting-state” and attempts to connect to the
grid.
Normal mode
In this mode the inverter works normally. Whenever the voltage from PV panel is sufficient (voltage>150VDC), the inverter
converts power into the grid. In normal mode the green LED is on.
Fault mode
The internal controller continuously monitor the system status. In case of unexpected conditions such as grid problems or an
internal failure, it will display the information on its LCD-display and light up the red “Fault” LED.
Shutdown mode
During periods of little or no sunlight, the inverter automatically stops. The display and LED’s on the front panel do not work.
Starting-up display sequence: Once the PV power is sufficient, the inverter displays information as follows:
“User: xxxx”
→
“Spec:xxxx”
→
“Model:x.xkW”
→
“SW Version :xx.xx”
→
“Checking xxS”
→
“Normal State”
→
“Pac= xxx.x W”.
The LCD display backlight automatically turns off after 30 seconds to save power.
LCD display
The first line of LCD
State
Display content
Remark
Wait State
Waiting
Initial waiting
Checking xxS
System checking
Reconnect in xxS
System checking
Standby
PV voltage low
Normal State
Pac = xxxx.x W
Inverter output power
Auto Test State
Auto testing
Protection auto test
Fault State
System xx Fault
System fault
Permanent State
Inverter xx Damaged
Inverter fault
Program State
Programing
Update software
The second line of LCD
Cycle display
Display time /s
Remark
User: xxxx
1
The user type
Spec: xxxx
1
The inverter spec type
Model:x.xkW
1
The inverter model
SW Version:xx.xx
1
The software version
Etotal: xxxkWh
2
The energy total
Etoday: xx.xkWh
2
The energy today
Ttoday:xxhxxmin
2
Operation hours today
PV:xxxV BUS:xxxV
2
The PV and Bus voltage
AC:xxxV xx.xHz
2
The Grid voltage and frequency
