Sungrow SG3125HV-20, System Manual

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parameter are satisfied, the inverter will turn from the IIn niittiia all S Stta an nd db byy mode into the
S Stta arrttu up p mode.
S Stta arrttu up p
This is the transient process between the IIn niittiia all S Stta an nd db byy mode and the R Ru un n mode.
Once the S Stta arrttu up p mode is activated, the inverter will start feeding power to the grid.
R Ru un n
In this mode, the inverter converts the DC energy into AC energy and feeds it to the grid
by way of MPPT.
The inverter tracks the PV arrays’ maximum power point (MPP) to maximize the output
energy.
S Stta an nd db byy
In R Ru un n mode, the inverter will enter the S Stta an nd db byy mode if the DC side current is as low as
0A for a while.
The inverter will continuously check if the PV array meets the grid-connection
requirements. If the DC startup voltage of the inverter and the startup time are reached,
it will turn into the R Ru un n mode.
F Fa au ulltt
If a fault occurs during operation, the inverter will enter the F Fa au ulltt mode. LCD panel will
display the fault type with the “Fault” indicator on until the fault is removed After the
fault is removed, the inverter reverts to R Ru un n mode.
If the fault is unrecoverable, stop the inverter and perform maintenance work. It will
automatically check if the fault is recoverable.
When a DSP fault or a module fault occurs, never restart the inverter through
the LCD. Perform apower-off check before reenergizing the inverter. Otherwise,
the machine may be damaged.
Otherwise, the module may be damaged.
E Em me errg ge en nc cyy--sstto op p
Stop the inverter by pressing the emergency stop button inside the monitoring window
when a fault or an emergency occurs.
The emergency stop button is used to disconnect the AC switch, the DC switch, and the
auxiliary switch. Release the emergency stop button with the corresponding key.
K Ke eyy--sstto op p
When maintenance or service work is required, the inverter turns from the R Ru un n mode to
the K Ke eyy--sstto op p mode after the user sends a stop instruction via the LCD panel.
A Alla arrm m R Ru un n
In A Alla arrm m R Ru un n mode, the inverter can keep running but send alarm signal. The user can
check the present alarm information through the Working state on the LCD default
11 Main Functions System Manual