Huawei iSitePower-M MAP05A1 - Page 186

Module Alarm Name Alarm
Severity
Causes Suggestion
Mains AC
Underfrequenc
y
Major 1. AC
underfreque
ncy occurs.
2. The alarm
threshold is
improperly
set.
1. If the alarm occurs accidentally,
the power grid may be abnormal
temporarily. The inverter
automatically recovers after
detecting that the power grid
becomes normal.
2. If the alarm occurs frequently,
check whether the power grid
frequency is within the allowed
range. If yes, change the power
grid overfrequency protection
threshold on the mobile app or
management system.
● FusionSolar app (local
commissioning): Home >
Mains >
Conguration > AC
Overfrequency Alarm
Threshold
● Management system:
Navigate to the device and
choose Mains >
Conguration > Basic
Parameters > AC
Overfrequency Alarm
Threshold.
iSitePowe
r-M
Communicatio
n Failure
Major The iSitePower-
Ms involved in
the parallel
system fail to
communicate.
1. Check whether the
communications cables to the
parallel iSitePower-Ms are
disconnected or loose.
2. Check whether the address DIP
switches for the master and slave
products are set correctly.
iSitePower-M (MAP05A1, MAB05B1)
User Manual 12 System Maintenance
Issue 06 (2023-04-24) Copyright © Huawei Digital Power Technologies Co., Ltd. 177