Table 2-4 Working mode description
Working
Mode
Description
Standby The SUN2000 enters the standby mode when the external
environment does not meet the requirements for starting the
SUN2000. In the standby mode:
● The SUN2000 continuously checks its status and enters the
operating mode once the operating requirements are met.
● The SUN2000 enters the shutdown mode after detecting a
shutdown command or a fault after startup.
Grid-tied In operating mode:
● The SUN2000 converts DC power from PV strings into AC
power and feeds the power to the power grid.
● The SUN2000 tracks the maximum power point to maximize
the PV string output.
● The SUN2000 enters shutdown mode after detecting a fault
or a shutdown command, and enters standby mode after
detecting that the PV string output power is not suitable for
connecting to the power grid to produce power.
Independent In independent mode, the SUN2000 switches to the o-grid
mode when the power grid fails.
● If the power grid fails, the SUN2000 switches to the
independent mode to supply power to specic loads.
● After the mains recovers, the SUN2000 automatically switches
back to the grid-tied mode.
Shutdown ● In standby or operating mode, the SUN2000 enters shutdown
mode after detecting a fault or shutdown command.
● In shutdown mode, the SUN2000 enters standby mode after
detecting a startup command or detecting that the fault has
been rectied.
SUN2000-4.95KTL-JPL1
User Manual 2 Product Overview
Issue 05 (2023-02-17) Copyright © Huawei Technologies Co., Ltd. 21
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