Huawei SUN2000-M3 User Manual page 93

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-
M3
User Manual
ID Name
2085 Built-in
PID
operatio
n
abnorma
l
2090 Abnorm
al active
power
scheduli
ng
instructi
on
Issue 11 (2023-01-10)
Severity Cause
Minor Cause ID = 1, 2
● The output resistance of
PV arrays to ground is
low.
● The system insulation
resistance is low.
Major Cause ID = 1
● The DI input is
abnormal.
● The DI input is
inconsistent with the
configuration.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Solution
● Cause ID = 1
1. Turn off the AC output
switch and DC input
switch, wait for a period of
time (for details about the
wait time, see the
description on the device
safety warning label), and
then turn on the DC input
switch and AC output
switch.
2. If the alarm persists,
contact your dealer or
Huawei technical support.
● Cause ID = 2
1. Check the impedance
between the PV array
output and the ground. If
a short circuit occurs or
the insulation is
insufficient, rectify the
fault.
2. If the alarm persists,
contact your dealer or
Huawei technical support.
1. Check whether the cables are
connected correctly to the DI
ports.
2. On the DI active scheduling
screen under the dry contact
scheduling settings, view the
DI signal configuration
mapping table. Contact the
power grid company to check
whether the configurations in
the mapping table are
complete and meet the
requirements.
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