Huawei SE2900 - Fan Tray

HUAWEI SE2900 Session Border Controller
Hardware Description
1 Service Processing Device
Issue 01 (2016-01-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
28
1.4.2 Fan Tray
Functions
Table 1-18 describes the functions of the fan tray.
Table 1-18 Fan tray functions
Function
Description
Heat dissipation
The fan trays draw in cool air from the front of the subrack and
exhaust warm air from the rear of the subrack.
Monitoring
Fan monitoring boards are configured for fan trays to:

Provide ports for communicating with the switch boards.

Detect and report the fan operating status and speed values.

Control the health indicators on the fan trays.

Support fan blocking status detection and reports fan
alarms.

Support online software upgrades and log uploads.

Monitor and report the fan temperature.

Detect the fan tray installation status.
Speed adjustment
The fan speed can be automatically or manually adjusted based
on the ambient temperature, implementing fan speed
adjustment for low-power operating.
Hot swap
Online replacement is supported.
Appearance
Figure 1-22 shows a fan tray.