Huawei SUN2000-50KTL-JPM0 - Page 83

SUN2000-(50KTL-JPM0, 50KTL-JPM1, 63KTL-JPM0)
User Manual
7 Man-Machine Interactions
Issue 01 (2018-09-30)
Copyright © Huawei Technologies Co., Ltd.
77
No.
Parameter
Description
Unit
Default
Value
Value Range
Remarks
19
PLC
communica
tion
For SUN2000 models
that support both
RS485 and PLC
communication, when
RS485
communication is
used, you are advised
to set PLC
communication to
Disable to reduce
power consumption.
N/A
Disable

Disable

Enable
N/A
20
Upgrade
delay
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.
N/A
Enable

Disable

Enable
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.
21
String
monitor
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.
N/A
Disable

Disable

Enable
If PV strings are
easily shaded, you
are advised to set
String monitor to
Disable to prevent
false alarms.
22
String
detection
reference
asymmetric
coefficient
Specifies the
threshold for
determining PV string
exception. The false
alarms caused by
fixed shadow shading
can be controlled by
changing this
parameter.
N/A
20
[5, 100]
This parameter is
displayed when
String monitor is
set to Enable.