Huawei SUN2000 Series User Manual page 21

SUN2000-(29.9KTL, 33KTL-A, 36KTL, 42KTL)
User Manual
Table 2-4 Working mode description
Working
Mode
Standby
Operating
Shutdown
Issue 11 (2019-06-08)
Description
The SUN2000 enters the standby mode when the external environment does
not meet the requirements for starting the SUN2000. In standby mode:
 The SUN2000 continuously performs self-check and enters the operating
mode once the operating requirements are met.

If the SUN2000 enters the shutdown mode after detecting a shutdown
command or a fault after startup.
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 the shutdown mode after detecting a fault or a
shutdown command, and enters the standby mode after detecting that the
PV string output power does not meet the requirements for grid-tied
electricity generation.
 In standby or operating mode, the SUN2000 enters the shutdown mode
after detecting a fault or shutdown command.
 In shutdown mode, the SUN2000 enters the standby mode after detecting
a startup command or that a fault is rectified.
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