Figure 2-15 Working modes
Table 2-2 Working mode description
Working
Mode
Description
Standby The SUN2000 enters Standby mode when the external environment does not
meet the operating requirements. In Standby mode:
● The SUN2000 continuously performs status check and enters the Operating
mode once the operating requirements are met.
● The SUN2000 enters Shutdown mode after detecting a shutdown command or
a fault after startup.
Operating 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.
● If the SUN2000 detects a fault or a shutdown command, it enters the
Shutdown mode.
● The SUN2000 enters Standby mode after detecting that the PV string output
power is not suitable for connecting to the power grid for generating power.
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 that the fault is rectied.
SUN2000-(75KTL, 100KTL, 110KTL, 125KTL) Series
User Manual 2 Overview
Issue 11 (2021-11-10) Copyright © Huawei Technologies Co., Ltd. 21
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