DOCR-070645-E
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(2) “
Factory Default
” menu: The manufacturer’s default parameters value can be
restored when the inverter is not in operation mode. If you try to change the
parameters while the unit is operational “Fault Operated” will be displayed.
(3) “
Auto Test
” menu: Used for factory test only. Not intended to be used by the
user.
(4) “
MPPT Scan
” menu: “MPPTScan” is to execute the MPPT scanning manually.
Move the cursor to this item, and press ENT to initiate the scanning. The LCD screen
will skip to normal operation interface if the MPPT scanning succeeds, or remain on
the “MPPTScan menu” interface if the scanning fails.
MPPT scan function is used for multi-MPP point tracking, if the PV panels are partly
shadowed or installed with different angle. The factory default setting of MPPT scan
is Enabled, and it can also be Disabled. When the MPPT scan function is enabled, the
scan period is 60 minutes; the inverter will scan the maximum power point in the
MPPT range, according to below condition
:
In independent mode, each input power is lower than 75% of the rated power
of each MPPT tracker.
Once this MPPT scan function is activated thru the LCD, it will search the
maximum power point at a voltage step of 5V in the MPPT range for full load,
and get the maximum power point.
(5) “
ARC Detect
” In the “Parameters Setting”
”Control Command” menu, execute
the “ARC Detect”, the inverter will stop working and test ARC.
Arcing check and protection is mainly divided into two parts, the Arcing check board
is responsible for detecting if there is arcing in the PV line, and sends the arcing
protection signal to the DSP in the control board. The control board “DSP” is
responsible for turning the inverter off the grid after receiving the arcing signal to
ensure safety. The arcing board failure will cause ‘arc board err’ shown on the LCD
and it will not connect to the grid until the arc board is OK. If there is Arcing fault, the
LCD displays the fault which can only be cleared manually.
(6) “
ARC Clear
” is used to clear the ARC fault. Move the cursor to this menu, and
press ENT. The operation result will appear on the LCD, ie. “Succeed” or “Failed”.
automatically if alarm or protection faults occur. This function will not
respond when the inverter is in operation mode and a “FaultOperated”
alarm interface is indicated.