14
5
System Power-on
1. Switch on the AC circuit breaker between the inverter and the power grid.
2. Press
DC SWITCH
at the bottom of the inverter and rotate it to the
ON
position.
3.
(Optional) Measure the temperatures at the joints between the DC terminals and the
connectors using a thermometer.
4. Observe the LED indicators to check the inverter operating status.
Indicator
Status
Meaning
PV connection
indicator
Steady green
At least one PV string is properly connected, and
the DC input voltage of the corresponding MPPT
circuit is higher than or equal to 200 V.
Off
The inverter disconnects from all PV strings, or
the DC input voltage of each MPPT circuit is less
than 200 V.
Grid-tie indicator
Steady green
The inverter is grid-tied.
Off
The inverter is not grid-tied.
Communication
indicator
Blinking green (on for 0.5s and
off for 0.5s)
The inverter receives data over RS485/PLC
communication.
Off
The inverter has not received data over
RS485/PLC communication for 10 seconds.
Alarm/
Maintenance
indicator
Alarm state
Blinking red
slowly (on for 1s
and then off for
4s)
The inverter has generated a warning.
Blinking red fast
(on for 0.5s and
then off for 0.5s)
The inverter has generated a minor alarm.
Steady red
The inverter has generated a major alarm.
Local
maintenance
state
Blinking green
slowly (on for 1s
and then off for
1s)
Local maintenance is in progress.
Blinking green
fast (on for
0.125s and off
for 0.125s)
Local maintenance has failed.
Steady green
Local maintenance is successful.
Before switching on the AC circuit breaker between the inverter and the power grid, use a
multimeter to check that the AC voltage is within the specified range.
NOTICE
NOTICE
If the DC input power cables are reversely connected and the DC switch is ON, do not turn off the
DC switch immediately. Otherwise, the inverter may be damaged. Wait until the PV string voltage
reduces to the safety range. Then, turn off the DC switch, remove the positive and negative
connectors, and rectify the connection.
