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Chapter 1: Overview
38
Figure 22. Two AT-PWR800 Modules for 480 to 960 Watts, with Limited
Redundancy
Another approach to dealing with a PoE+ switch that needs more than 480
watts for its powered devices is with the AT-PWR1200 Module. This
module can provide 780 watts. If you install this module in both the switch
and chassis, the switch will have PoE+ power redundancy up to 780 watts.
Figure 23. Two AT-PWR1200 Modules Providing Up to 780 Watts, with
Full Redundancy
For example, if the total power requirements of the devices connected to
the switch is 720 watts, each AT-PWR1200 Module would be responsible
for providing 360 watts. A failure of one power supplies will not affect the
ability of the switch to support all of the powered devices, because the
power capacity of the remaining AT-PWR1200 Module will be adequate to
meet the needs of all the devices.
B
B
1
2
3
4
SYSTEM
PoE+ / SYSTEM PoE+ / SYSTEM
SYSTEM
MODULE B
MODULE A
A
A
AT-PWR800
DC OUT
FAULT
100-240 VAC~12A MAX
AT-PNL800/1200
POWER SUPPLY
RPS
READY
RPS INPUT
12V/21A MAX
WARNING
This unit may have more than one power input. To reduce the risk of
electric shock, disconnect both A/C and RPS inputs before servicing
unit.
AT-PWR800
2142
DC OUT
FAULT
100-240 VAC~12A MAX
AT-x610-24Ts/X-POE+
AT-RPS3000 Chassis
Switch with powered devices
AT-PWR800 Module
AT-PWR800 Module
requiring 480 to 960 watts
B
B
1
2
3
4
SYSTEM
PoE+ / SYSTEM PoE+ / SYSTEM
SYSTEM
MODULE B
MODULE A
A
A
AT-PWR1200
DC OUT
FAULT
100-240 VAC~16A MAX
AT-PNL800/1200
POWER SUPPLY
RPS
READY
RPS INPUT
12V/21A MAX
WARNING
This unit may have more than one power input. To reduce the risk of
electric shock, disconnect both A/C and RPS inputs before servicing
unit.
AT-PWR1200
2165
DC OUT
FAULT
100-240 VAC~16A MAX
AT-x610-24Ts/X-POE+
AT-RPS3000 Chassis
Switch with powered devices
AT-PWR1200 Module
AT-PWR1200 Module
requiring up to 780 watts