2-16
Installing the Switch
Installation Procedures
RPS/EPS Operation
The external power supply monitors the power signal from the switch by
detecting that the external power supply is connected to a valid switch with
an external power supply cable. When the power from the switch is no longer
detected, the external power supply will provide power to the switch within
1 millisecond.
The external power supply supports hot plugging of the RPS cable only. Hot
disconnect of the EPS (PoE/PoE+ power) cable is not supported, and could
cause loss of power to the switch if disconnected while power is flowing. The
EPS cable can be connected at any time just not disconnected. The external
power supply unit must be powered down in order to unplug the EPS (PoE/
PoE+ power) cable.
Operating Characteristics of the external power supplies
The 620 external power supply has two RPS ports and the 630 external power
supply has one RPS port, each of which can provide redundant +12V power
to a connected switch. If a switch with no AC power is connected to an
operating external power supply, it will not receive power. The switch must
be initially powered on using AC power before external power supply will
provide RPS power.
The 620 external power supply has two EPS Ports and the 630 external power
supply has one EPS port. The 620 external power supply can provide a
maximum of 398 watts of PoE power to each of the two EPS ports, minus any
line lose on the EPS cable. The 630 external power supply can provide a
maximum of 382 watts of PoE/PoE+ power. PoE power is provided at 50 volts
and PoE+ power is provided at 54 Volts.
■ It is important to understand the PoE/PoE+ power requirements of the
switches because if the PoE/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/PoE+ power supply should fail. For
further information regarding the external power supply PoE/PoE+ capa-
bilities, see the following manuals:
• HP ProCurve Power over Ethernet (PoE/PoE+) Planning and
Implementation Guide
• HP ProCurve 620 Redundant and External Power Supply
Installation and Getting Started Guide
• HP ProCurve 630 Redundant and/or External Power Supply
Installation and Getting Started Guide
These manuals are on the HP ProCurve Web site at www.hp.com/go/procurve/
manuals.
To Next Page
Loading...
