Meikai ENERGY
Page
15
Copyright
MeiKai
ENERGY 2012
REV 1.0
Note
:
the
starting
voltage
for
Meikai
micro
-
inverter
is
24
V
,
the
Meikai
micro
-
inverter
start
to
operate
only
after
the
DC
input
voltage
is
24
V
or
above
,
the
RED
LED
indicates
the
Meikai
micro
-
inverter
is
in
normal
operation
.
Sarting Grid connect indication
After startup, if the utility grid voltage and the PV module energy output are normal in 2 minutes,the
micro-inverter will start to connect to the utility grid, three short Orange blinks shows the micro-inverter
is attempting to connect to the grid,after the blinks,the micro-inverter start producing power and the
Green LED still on.
Normal operation indication
After 4 seconds the Green LED off and the micro-inverter enter MPP Tracking operation the Green LED
stay on with long interval blink.
Communication indication
When operats normaly, the micro-inverter reports operation data to the Messenger every 5 minutes, at
this moment, the Green LED will blink quickly until the reporting completed.
Failure indication
N270 is designed with 9 different kind of failure protections, all will spark the RED LED and stay on until
the failure is maintained.
NOTE: Only for low voltage protection, the recovery time is variable, for other situation the
recovery time is 2 minutes. The initial recovery time for low voltage protection is 2
minutes;it varies if the low voltage situation continues. The recovery time return back to 2
minutes if the MPP Tracking starts working and the GREEN LED blinks in long interval.
Failure Report
There are 9 protections for N270
Micro-Inverter and all failure information reported to the Messenger,
please refer to the installation and operation manual for details. The operation status can be directly
detected.
The 9 protections are as following:
Over high input voltage
Over low input voltage
Over high BUS voltage
Over low BUS voltage
Utility grid voltage Over low
Utility grid voltage Over high
Utlity grid current Over high
Micro-inverter temperature over high