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Chapter 1: Chassis and Power Supplies
LEDs
26
chassis.
The AT-SBxPWRSYS2 AC System Power Supply was added to
the management software in release 5.4.5-1. It will work with
earlier releases, but Allied Telesis recommends updating the
software on controller cards with previous versions to the latest
release to ensure full compatibility.
Note
The AT-SBxPWRSYS1 DC Power Supply is not compatible with the
other system or PoE power supplies and should not be operated in
the same chassis with other power supplies. You may, however,
operate the chassis for a short period of time with AC and DC power
supplies if you are converting it from one type of power supply to
another, such as from AC to DC. This allows you to transition the
chassis without having to power it off.
Slots A and B are for the AT-SBxPWRPOE1 AC Power Supply. The unit
provides power to the PoE feature on the twisted pair ports on the AT-
SBx81GP24 Line Card. For more information, refer to "Power over
Ethernet on the AT-SBx81GP24 Line Card" on page 62. Please review the
following items concerning the PoE power supply:
You may install either one or two power supplies in the chassis.
PoE power supplies are installed in slots A and B of the chassis.
If you are installing only one power supply, you may install it in
either slot A or B.
A single PoE power supply provide up to 1200 watts of power for
PoE. Two PoE power supplies provide up to 2400 watts of power.
The PoE power supply is hot swappable. You do not have to power
off the chassis to install or replace it.
The total number of powered devices the chassis can support on
the ports on AT-SBx81GP24 Line Cards depends on the number
of AT-SBxPWRPOE1 AC Power Supplies in the chassis and the
power requirements of the devices. For instance, a chassis can
support 40 ports of Class 4, PoE+ (IEEE 802.3at) powered devices
with one power supply or 80 ports with two power supplies. For
further information, refer to "Power over Ethernet on the AT-
SBx81GP24 Line Card" on page 62.
Note
Power supplies are not included with the chassis and must be
purchased separately.
The LEDs on the AT-SBxPWRSYS1 and AT-SBxPWRSYS2 System
Power Supplies are described in Table 1 on page 27.
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