Power Supply /Controller Modules; Figure 2-8 Power Supply/Controller Module (Typical) - PESA Cougar 3 User Manual

2.4 P S
OWER UPPLY
Two Power Supply/Controller Modules are available in the Cougar3 system architecture. Both supplies
are constructed as a modular unit that can slide into either of the two available slots in the chassis frame.
In redundant power supply applications, a power supply/controller module is used in both slots of a
chassis frame.
A typical power supply/controller module is shown in Figure 2-8. Although virtually identical in
appearance, the two modules are distinctly different in controller function. For purposes of this brief
introduction the basic functional difference is discussed in the following paragraphs. The two modules
are identified as follows:
Power Supply/Fan Controller Module - This module contains the power supply circuitry, a pair of
fans used to circulate cooling air through the chassis frame, and a controller circuit that controls
operation and reports status of the on-board cooling fans.
Power Supply/System Controller Module - This module also contains power supply circuitry, a pair
of fans used to circulate cooling air through the chassis frame and fan controller functions. In addition it
contains the Small-Scale System Controller circuitry that allows the router to function in a stand-alone
configuration.
Proprietary Information of PESA
/C M
ONTROLLER ODULES

Figure 2-8 Power Supply/Controller Module (Typical)

C 3 V
OUGAR
Publication 81-9059-0660-0, Rev. B
R
IDEO OUTER
March 2011
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