Parts Replacement - Huawei ECC500 User Manual

ECC500
User Manual
Module
RS485
expansion
card, AI/DI
expansion
card, and
AI/DI module

6.4 Parts Replacement

Context
This section describes how to replace parts of the ECC500.
Issue 03 (2020-01-06)
Symptom
The Run indicator is blinking fast (0.125s
on and 0.125s off), indicating that
communication between the main control
module and the host is abnormal.
The Alarm indicator is on, indicating that
there is a critical or major alarm.
The PWR indicator is off, indicating that
the RS485 expansion card, AI/DI
expansion card, or AI/DI module is faulty
or has abnormal power supply.
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 AI/DI module 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 AI/DI module fails to
communicate with the host.
The ALM indicator is on, indicating that
there is a critical or major 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.
For details about how to view alarm information, see
Copyright © Huawei Technologies Co., Ltd.
6 Maintenance and Troubleshooting
Solution
Check that the
communications cable
between the main control
module and the host is
properly connected.
Check and clear the alarm.
Check that the board in the
ECC500 has normal power
supply and runs properly.
Check that the board is in
good contact with the
ECC500 and runs properly.
Check that the board is in
good contact with the
ECC500 and runs properly.
Check and clear the alarm.
Reinstall the board.
7.10 How Can I Handle Alarms?.
83