Huawei SUN2000-50KTL-M0 User Manual page 88

SUN2000-(50KTL-M0, 70KTL-INM0)
User Manual (India Edition)
Parameter
Communication
interrupt shutdown
Communication
resumed startup
Communication
interruption duration
(min)
Soft start time (s)
Hibernate at night
MBUS communication
Upgrade delay
String monitor
String detection
reference asymmetric
coefficient
Issue 03 (2019-07-30)
Description
The standards of certain countries and
regions require that the SUN2000 must
shut down after the communication is
interrupted for a certain time.
If this parameter is enabled, the SUN2000
automatically starts after communication
recovers. If this parameter is disabled, the
SUN2000 needs to be started manually
after communication recovers.
Specifies the duration for determining
communication interruption, and is used
for automatic shutdown for protection in
case of communication interruption.
Specifies the duration for the power to
gradually increase when the SUN2000
starts.
The SUN2000 monitors PV strings at
night. If Hibernate at night is set to
Enable, the monitoring function of the
SUN2000 will hibernate at night, reducing
power consumption.
For SUN2000 models that support both
RS485 andMBUS communication, when
RS485 communication is used, you are
advised to set MBUS communication to
Disable to reduce power consumption.
Upgrade delay 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.
The SUN2000 monitors PV strings in real
time. If any PV string is abnormal (such as
the PV string is shaded or the energy yield
decreases), the SUN2000 generates an
alarm to remind maintenance personnel to
maintain the PV string in a timely manner.
Specifies the threshold for determining PV
string exception. The false alarms caused
by fixed shadow shading can be controlled
by changing this parameter.
Copyright © Huawei Technologies Co., Ltd.
7 Man-Machine Interactions
Remarks
If Communication interrupt
shutdown is set to Enable and the
SUN2000 communication has been
interrupted for a specified time (set by
Communication interruption
duration), the SUN2000 will
automatically shut down.
This parameter is displayed when
Communication interrupt shutdown
is set to Enable.
N/A
N/A
N/A
N/A
After the SUN2000 upgrade starts, if
Upgrade delay is set to Enable, the
upgrade package is loaded first. After
the PV power supply recovers and the
activation conditions are met, the
SUN2000 automatically activates the
upgrade.
If PV strings are easily shaded, you are
advised to set String monitor to
Disable to prevent false alarms.
This parameter is displayed when
String monitor is set to Enable.
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