ZXSDR BS8900 Hardware Manual
Fan Control Module (FCE)
Function
The fan control module
FCE
provides the following functions:
�
Rotation control and monitoring of five fans
�
Provision of one 485 serial port to communicate with BBU
�
Five dry contact interfaces among which one for door control
monitoring, two for power lightning monitoring and two for PSU
alarm monitoring
�
Four temperature sensor interfaces among which one for BBU
upwind direction temperature detection, one for BBU downwind
direction temperature detection, one for RSU temperature de-
tection and one for temperature detection of the inlet under
the heat exchanger
�
One heater control output
�
One 232 serial port.
Principle
The FCE module comprises fan detection control unit, main control
unit, BBU interface unit, environment monitoring unit and power
interface unit.
Figure 89
illustrates the principle of the FCE module.
F
IGURE
89 FCE M
ODULE
P
RINCIPLE
106
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