•
If a conversion gain is not set correctly when inputting or outputting numerical values from Analog data, an
error will occur. At this time, it is necessary to readjust the conversion gain.
•
The current control gain can adjust the amount of current control by adjusting the feedback amount of line
current control.
4.4 System protection function
◐
When an error occurs, buzzer is sounds, system is stops, and alarm history is saved.
◐
System fault function
Type Description
OverHeat
When the temperature of the heat sink becomes 35°C, the fan turns and a fault occurs
when the HS NTC OH(default: 25°C) is exceeded.
DC over vtg.
Fault occurs when DC-link voltage exceeds PV Over voltage(default: 510V)
Overload
It occurs when it exceeds 110% of the rated current and lasts for 1 minute or more.
OC inverter
Inverter overcurrent detection
IGBT error
Fault occurs when IGBT error signal of Drive board is detected for Driver fault cnt only
PV over vtg.
Fault occurs when PV over voltage(510V) is larger than setting value
Island
Fault occurs when anti-island is detected due to grid system outage
OV inverter
Fault occurs when grid voltage is above Fault high volt(Def. 11%) setting value
UV inverter
Fault occurs when grid voltage is below Fault high volt(Def. 12%) setting value
OF inverter
Fault occurs when grid frequency is above Fault high freq(Def. 2.0%)
UF inverter
Fault occurs when grid frequency is below Fault low freq(Def. 2.0%)
OC PV
PV over current detection
Battery OC
Battery over current detection
Battery OV
Battery over voltage detection
Battery UV
Battery under voltage detection
OC Grid
over current detection(Grid to battery, battery to grid)
AD Offset err
When the analog sensing circuit value is abnormal (sensing circuit failure)
EEPROM Fail
Errors in EEPROM Read or Write
