Fan Tray Monitoring Principles; Led; Led Of The Fan Tray - Huawei UA5000 Manual

UA5000 Universal Access Unit
Environment Monitoring

9.1 Fan Tray Monitoring Principles

This topic describes the principles of monitoring the fan tray through the fan monitoring board.
Figure 9-1
Figure 9-1 Fan tray monitoring principles

9.2 LED

The LED on the front panel of the fan tray indicates the running status of the fans. This topic
describes the status and meanings of the LED.
The LED is on the right of the fan tray.
Table 9-1 LED of the fan tray
LED
Issue 01 (2012-08-17)
shows the fan tray monitoring principles.
control system
Backplane
Fan Fan
Fan monitoring board
NOTE
l The fans connect to the fan monitoring board through the signal cable. The fan monitoring board
monitors the working status of the fans.
l The fan tray is connected to the backplane of the shelf through cables directly or indirectly.
l The fan monitoring board reports the collected status to the control system through the backplane.
Status
Green: on for 1s and off for 1s
repeatedly
Green: on for 0.125s and off for
0.125s repeatedly
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Fan
Fan tray
Table 9-1 describes the LED of the fan tray.
Description
The fan tray works in the normal state.
The fan tray is faulty.
9 Fan Tray Monitoring Solution
152