Huawei iSitePower-M MAP05A1 User Manual page 186

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