Huawei SUN2000-75KTL Series User Manual page 92

SUN2000-(75KTL, 100KTL, 110KTL, 125KTL) Series
User Manual
Parameter
String connection mode
Automatic OFF due to
communication interrupted
Automatic ON due to
communication resumed
Communication interruption
duration (min)
Soft start/boot time (s)
Shutdown gradient (%/s)
Night-time hibernation
MBUS communication
Delay upgrade
Issue 11 (2021-11-10)
Description
Specifies the connection mode of PV strings.
● When PV strings connect to the inverter separately (All PV
strings separated), there is no need to set this parameter.
The inverter can automatically detect the connection mode
of the PV strings.
● When PV strings connect to one another in parallel outside
the inverter and then connect to it independently (All PV
strings connected), set this parameter to All PV strings
connected.
The standards of certain countries and regions require that the
inverter must shut down after the communication is
interrupted for a certain time.
If Automatic OFF due to communication interrupted is set
to Enable and the inverter communication is interrupted for a
specified time (set by Communication interruption
duration), the inverter will automatically shut down.
If this parameter is set to Enable, the inverter automatically
starts after communication recovers. If this parameter is set to
Disable, the inverter needs to be started manually after
communication recovers.
This parameter is displayed when Automatic OFF due to
communication interrupted is set to Enable.
Specifies the duration for determining communication
interruption. Used for automatic shutdown for protection in
case of communication interruption.
Specifies the duration for the power to gradually increase
when the inverter starts.
Specifies the power change speed when the inverter shuts
down.
The inverter monitors PV strings at night. If this parameter is
set to Enable, the monitoring function of the inverter will
hibernate at night to reduce power consumption.
For inverters that support RS485 communication and MBUS
communication, you are advised to set this parameter to
Disable to reduce power consumption.
This parameter is mainly used in the upgrade scenarios where
the PV power supply is disconnected at night due to no
sunlight or unstable at dawn or dusk due to poor sunlight.
After the inverter starts to upgrade, if Delay upgrade is set to
Enable, the upgrade package is loaded first. After the PV
power supply recovers and the activation conditions are met,
the inverter automatically activates the upgrade.
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