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Chapter 1: Overview of the Chassis and Power Supplies
LEDs
26
The AT-SBxPWRSYS2 AC System Power Supply was added to
the AlliedWareNSP software in version R6.18.0.2. And while it will
work with earlier releases, Allied Telesis recommends updating the
software on controller cards with earlier versions to the latest
release to ensure full compatibility.
The system power supplies are hot swappable. You do not have to
power off the chassis to replace a power supply.
Note
The AT-SBxPWRSYS1 DC System Power Supply is not compatible
with the other system and 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 when converting it from one type of power
supply to another, such as from AC to DC.
Slots A and B are for the AT-SBxPWRPOE1 Power Supply. This module
provides power for the PoE feature on the twisted pair ports on the AT-
SBx31GP24 Line Card. Please note the following items concerning the
PoE power supply:
PoE power supplies are installed in slots A and B of the chassis.
You may install either one or two PoE power supplies.
If you are installing only one power supply, you may install it in
either slot A or B.
A single PoE power supply provides 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 replace it.
The total number of powered devices the chassis can support on
the ports on AT-SBx31GP24 PoE Line Cards depends on the
number of AT-SBxPWRPOE1 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 Budgeting" on page 58.
Note
Power supplies are not included with the chassis and must be
purchased separately.
The LEDs on the AT-SBxPWRSYS1 and AT-SBxPWRSYS2 AC System
Power Supplies are described in Table 1 on page 27.
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