EPS 2011-04

2-4

Introducing the HP 610 Redundant and External Power Supplies

Back of the Unit

EPS Ports on the HP 610 EPS

The HP 610 EPS has four external power supply ports. You can connect one

to four HP PoE switches to provide PoE power as a primary or backup source.

Power is equally shared between the EPS ports in pair A (that is, ports A1 and

A2) and between the EPS ports in pair B (ports B1 and B2). If only a single

port is used in a pair, that port supplies the maximum available power (408 W).

Port Status LEDs

The backup power port status LEDs on the HP 610 EPS back panel are a

duplication of those on the front panel. For a description of these LEDs, see

Table 2-1 on page 2-2.

Internal Power Status LED

The Internal Power Status LED on the HP 610 EPS back panel is a duplication

of the one on the front panel. For a description of this LED, see Table 2-1 on

page 2-2.

EPS Backup Power Ports

The HP 610 EPS has two backup power ports that allow up to five EPS units

to be connected together and thereby provide backup power to a failed unit.

However, note that the power load on the remaining active units must be

limited so that there is still enough reserve power to support a failed unit. The

simplest way is to have one unit in the group that has no direct PoE load on

it (no switches connected to the EPS ports). Sample topologies are shown at

the end of chapter 4 in this book.

Internal

Powe r

Status

Out

Ready

EPS Backup Power Ports

Internal

Powe r

Status

Out

Ready

EPS Backup Power Ports

Multiple power sources disconnect both the AC cord and EPS Backup power cables to completely remove power from the unit.

Line: 50/60

110

240 V~

11 6 A

HP 610 EPS

AC power connector

EPS Backup Power ports

EPS Backup Power port LEDs

Internal Power Status LED