EPS 2011-04

4-5

Introducing the HP 630 Redundant and/or External Power Supply

EPS Port Operation

The HP 630 RPS/EPS is able to detect the switch when connected to the RPS

port and also the status of the switch’s primary AC power supply. The unit

supports a hot-plug feature where a switch can be connected or disconnected

to the RPS port without causing any disruption either to switch operation or

the HP 630 RPS/EPS. Over-current protection on the RPS port prevents any

switch from exceeding the power supply limit of the unit. Any overload

condition causes the HP 630 RPS/EPS to shut down the port. See “RPS

Connections on the HP 630 RPS/EPS” on page 5-38

EPS Port Operation

The HP 630 RPS/EPS supports only one EPS port that can provide power to

PoE+ capable switches through the EPS cable. Each external power supply

unit can provide PoE+ power to a switch as a primary source or as a backup

to a switch that has its own internal PoE+ power supply. The resulting

additional PoE+ power can be used by the connected switch to allow connec-

tion of more PoE and PoE+ devices, or to provide backup PoE or PoE+ power

for the devices that are already connected.

The HP 630 RPS/EPS has only one EPS port that can provide up to 398 W of

PoE+ power at 54 V. See “EPS Connections on the HP 630 RPS/EPS” on page

5-38

Caution The EPS port is not hot-pluggable. The EPS port of the HP 630 RPS/EPS needs

to be connected to the switch EPS port before powering on the HP 630 RPS/

EPS unit.

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 must be powered down before

disconnecting the EPS (PoE+ power) cable, if power if flowing. Only the

power supply to be disconnected must be powered down.