Aruba S3500 Series User Manual

Aruba S3500 Series Power Supply
Installation Guide
0510915-03 | September 2014 1
The Aruba S3500-series Power Supply adapts electrical power for use with the S3500. The device chassis
has two slots that can hold individual power supplies to support load sharing, redundancy, and fault
tolerance.
The Aruba S3500 is shipped with one hot-swappable, field-replaceable, AC power supply (350W or 600W,
depending on the model) and one blank face plate. The included power supply is installed in the slot PSU 0,
while slot PSU 1 has a blank face plate covering the opening. The mobility access switch can operate with
one or two active power supplies, depending on the demands of your configuration.
 350W Power Supply: This power supply has a single voltage rail, at 12V, and does not support PoE.
 600W Power Supply: This power supply has two voltage rails, one at 12V and the other at 56V, and is
capable of supporting PoE.
 1050W Power Supply: This power supply has two voltage rails, one at 12V and the other at 56V, and is
capable of supporting PoE.
Load Sharing
Load sharing occurs when more than one power supply of the same rating is installed in the S3500 and
turned on. Load sharing divides the total power load of the switch among all available power supplies. Since
the power supplies work together, the effective power capacity of the switch is increased with each
additional power supply.
Redundancy
With power redundancy, the S3500 can continue normal operation even when a power supply fails or is
turned off. When multiple power supplies are installed, if one becomes unavailable (fails, or is turned off or
removed) the remaining power supplies will attempt to provide full power for the device. If the device’s
total power load does not exceed the combined rated output of the remaining, operational power supplies,
the switch will continue to operate. For information on how redundancy and power supply failure affect
PoE, see “Power Supplies and PoE” on page22.
Hot Swapping
Hot swapping allows you to replace one failed power supply while the others provide full power. This
makes it unnecessary to shut down the S3500 during the replacement procedure.
!
CAUTION
Never insert or remove a power supply while the power cord is connected. Verify that cord has been disconnected
from the power supply before installation or removal.
!
CAUTION
Do not install power supplies of different ratings in the same S3500.

Aruba S3500 Series Specifications

General

Power Supply Type	Hot-swappable
Input voltage	100-240V AC
Input frequency	50/60 Hz
Power Consumption	Varies by model and configuration
Input current	Varies by model and configuration. See product documentation for details.
Output power	Varies by model and configuration
Maximum Power Output	Varies by model and configuration
Efficiency	Varies by model and configuration. See product documentation for details.

Summary

Power Supply Functionality

Load Sharing

Divides the total power load of the switch among all available power supplies.

Redundancy

Allows the S3500 to continue normal operation even when a power supply fails.

Hot Swapping

Allows replacing a failed power supply without shutting down the S3500.

Power Supply Modules

Power Supply Components

Details the components of the power supply module, including LEDs and connectors.

Power Supply Status and PoE

Power Supply Module LEDs

Explains the status LEDs (AC OK, DC OK, TH OK) for monitoring power supply health.

PoE Support and Modes

Details PoE (802.3af) and PoE+ (802.3at) support and its three management modes.

PoE Power Supply Configurations

Describes available power supply configurations for PoE-capable S3500 models.

PoE Priority

Explains how ports are disabled based on priority during power reduction.

Installing and Removing Power Supplies

Installing a Power Supply

Step-by-step guide for installing a new power supply module into the chassis.

Removing a Power Supply

Step-by-step guide for safely removing an existing power supply module from the chassis.

Contacting Support