Chapter 2 Modules
Note:
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Insertion of jumper cap indicates “close” or “ON”, i.e. “1”.
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Removal of jumper cap indicates “open” or “OFF”, i.e. “0”.
Fan Array Module (FA)
Function
provides the following functions.
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Fan control and air inlet temperature check
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Provides the interface for fan control
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Provides a temperature sensor for
module to check the
temperature of air inlet
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Provides LED status display of the fan plug-in box
Principle
FA module consists of temperature sensor unit, fan drive unit, LED
drive, power, fan, backplane interface and FL unit.
illus-
trates the principle block diagram of FA module.
F
IGURE
20 FA M
ODULE
W
ORK
P
RINCIPLE
Panel
illustrates the panel appearance of FA module.
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