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HP ProCurve 5400zl Installation And Getting Started Manual: Eps Operation; Operating Characteristics Of The Eps (j8714a); Eps Operation; Operating Characteristics Of The Eps (j8714a)

Procurve 5400zl series switches.
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Installing the 5400zl Switches
Installation Procedures
The HP ProCurve Switch zl Power Supply Shelf, (J8714A), hereafter referred
to as the EPS, is an accessory product for the 5400zl switches. The EPS
provides External Power-over-Ethernet (PoE) or PoE+ power for up to two
5400zl switch products.
The EPS can supply up to 1800 watts (depending upon which power supplies
are installed) of PoE or PoE+ power to the switch if the internal PoE power
supply should fail, or as additional PoE power to be made available to the
switch's PoE ports. For further information regarding the EPS PoE
capabilities, see the PoE (ProCurve Power over Ethernet) Devices Planning
and Implementation Guide and the ProCurve Power Supply Shelf
Installation and Getting Started Guide, which are on the ProCurve Web site
at www.procurve.com/manuals. See
The EPS is an unmanaged power supply that only provides information by
way of LEDs.

EPS Operation

The EPS has a mechanism for detecting that it is connected to a valid switch
with an EPS cable. When the EPS is connected to a powered switch it will
provide additional PoE or PoE+ power to the switch within 2 seconds.
C a u t i o n
Disconnecting the EPS (PoE power) cable with power flowing is not
supported, and could cause loss of PoE power to all network devices
connected to the switch. The Power Supply Shelf must be powered down
before disconnecting the EPS (PoE power) cable, if power is flowing. Only
the power supply to be disconnected must be powered down. The EPS cable
may be connected at any time.
Operating Characteristics of the EPS (J8714A)
The Power Supply Shelf has two EPS Ports. The EPS can provide a maximum
of up to 900 watts of PoE power to each of the two EPS ports depending on
which power supply is used. It is important to understand the PoE (and PoE+)
power requirements of the 5400zl switches because if the PoE power is not
planned and implemented correctly the end devices connected to the switch
ports may not receive power if an internal switch PoE power supply should
fail. For further information regarding the Power Supply Shelf PoE and PoE+
capabilities, see the PoE (ProCurve Power over Ethernet) Devices Planning
and Implementation Guide and the ProCurve Power Supply Shelf
Installation and Getting Started Guide, which is on the ProCurve Web site.
See
2-20
page 5-1
for details.
page 5-1
for details.

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