No. Parameter Description Remarks
32 Upgrade delay 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 Upgrade delay is
set to Enable, the upgrade
package is loaded rst. After
the PV power supply recovers
and the activation conditions
are met, the inverter
automatically activates the
upgrade.
33 RS485-2
communication
If this parameter is set to Enable,
the RS485-2 port can be used. If
the port is not used, you are
advised to set this parameter to
Disable to reduce power
consumption.
-
34 String monitor The inverter monitors PV strings
in real time. If any PV string is
abnormal (such as the PV string is
shaded or the electric energy
yield decreases), the inverter
generates an alarm to remind
maintenance personnel to
maintain the PV string in a timely
manner.
If PV strings are often shaded,
you are advised to set String
monitor to Disable to prevent
false alarms.
35 Tracker controller Selects a controller vendor. -
36 String detection
reference
asymmetric
coecient
Species the threshold for
determining PV string exception.
The false alarms caused by xed
shadow shading can be controlled
by changing this parameter.
This parameter is displayed
when String monitor is set to
Enable.
37 String detection
starting power
percentage (%)
Species the threshold for
starting PV string exception
detection. The false alarms
caused by xed shadow shading
can be controlled by changing
this parameter.
38 Quick startup for
short-time grid
disconnection
Species whether to allow the
device to quickly start after the
power grid recovers from a short-
time failure.
-
SUN2000-(100KTL, 110KTL, 115KTL)-M2
User Manual 7 Man-Machine Interactions
Issue 02 (2022-06-30) Copyright © Huawei Technologies Co., Ltd. 79
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