iManager NetEco 6000
Device Installation and Commissioning Guide
7 Device Maintenance
Issue 03 (2019-03-10)
Copyright © Huawei Technologies Co., Ltd.
251
Item
Mainte
nance
Frequen
cy
Method
Expected
Result
Symptom
and
Possible
Cause
Exception
Handling
The RUN
indicator is
off, indicating
that the
RS485
expansion
card or AI/DI
expansion
card is in
poor contact
with the
ECC500; or
the RS485
expansion
card, AI/DI
expansion
card, or
independent
deployment
AI/DI unit is
faulty.
Check that
the board is in
good contact
with the
ECC500 and
runs properly.
The RUN
indicator is
blinking fast
(0.125s on
and 0.125s
off),
indicating
that the
RS485
expansion
card, AI/DI
expansion
card, or
independent
deployment
AI/DI unit
fails to
communicate
with the host.
Check that
the board is in
good contact
with the
ECC500 and
runs properly.
The ALM
indicator is
on, indicating
that there is a
critical or
major alarm.
Check and
clear the
alarm.