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Backplane
The backplane in the integrated chassis of the S7500E series implements high-speed data exchange
as well as management and control signal exchange between SRPUs and LPUs.
The backplane mainly provides the following functions:
z
Interconnection between cards
z
Card hot-swapping
z
Automatic slot recognition
z
Automatic chassis type recognition
z
Distributed power supply to the system. The S7506E-V has two backplanes: signal backplane and
power supply backplane. The power supply backplane is connected to the power modules and is
also connected to the signal backplane with an internal cable.
z
Connection of the signal cable that monitors the fan tray and power supply
Power Supply System
The S7500E series support a variety of power modules, as listed in Table 1-3.
Table 1-3
Power modules of the S7500E series
Model
Height
Power input mode
Support PoE power
PSR320-A 1
U
AC
No
PSR320-D 1
U
DC
No
PSR650-A 1
U
AC
No
PSR650-D 1
U
DC
No
PSR1400-A 3
U
AC
No
PSR1400-D 3
U DC
Yes
PSR2800-ACV 3
U AC
Yes
PSR6000-ACV 3
U AC
Yes
Table 1-4
Features of power modules
Feature
Description
Protection functions
Support input under-voltage protection, output over-voltage
protection, short-circuit protection, over-current protection, and
overheat protection
1+1 hot backup support
Support 1 + 1 hot backup and current sharing
Hot swap support
Support hot swap with the power switch turned off while the
device is in operation
Typically, the S7502E and the S7503E-S use 1U power modules, while the other models of the S7500E
series use 3U power modules.
The S7500E series support a large variety of card types, and system power consumption of a switch
varies with different types of cards in use. You can choose an appropriate power module model for your
switch based on its system power consumption.