ECC500
User Manual
6 Maintenance and Troubleshooting
Issue 05 (2020-03-16)
Copyright © Huawei Technologies Co., Ltd.
103
Module
Symptom
Solution
AI/DI expansion card, or
Independent Deployment
AI/DI Unit is faulty.
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.
After the RS485 expansion
card or AI/DI expansion
card is powered on the first
time, the ALM indicator is
on. One minute later, the
RUN indicator blinks fast,
indicating that the board is
in poor contact.
Reinstall the board.
For details about how to view alarm information, see
6.4 Parts Replacement
Context
This section describes how to replace parts of the ECC500.
Before replacing parts, ensure that the power supply to the ECC500 has been disconnected
and power cable terminals have been removed.
Only trained and qualified personnel are allowed to perform the operations.
Operation personnel must wear electrostatic discharge (ESD) gloves.
The main control module, RS485 and AI/DI expansion cards can be replaced in the same way.
This section describes how to replace the main control module.