Rps port operation, Eps port operation, Rps port operation -5 – HP 620 User Manual
Page 11: Eps port operation -5
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Introducing the ProCurve 620 Redundant and External Power Supply
RPS Port Operation
In
trodu
cing
the
ProCurve
620
Redu
ndan
t an
d Ext
ernal Pow
e
r
RPS Port Operation
The 620 RPS/EPS can be connected to two switches through RPS cables. Each
RPS port is independent of the other. Therefore if one fails the other can still
provide RPS power. The unit can provide up to 195 W of power at +12 VDC to
a each switch.
The 620 RPS/EPS is able to detect switches connected to each RPS port and
also the status of their primary AC power supply. The unit supports a hot-plug
feature where switches can be connected or disconnected to the RPS ports
without causing any disruption either to switch operation or the 620 RPS/EPS.
Over-current protection on each RPS port prevents any switch from exceeding
the power supply limit of the unit. Any overload condition causes the 620 RPS/
EPS to shut down the port.
EPS Port Operation
The 620 RPS/EPS supports two EPS ports that can provide power to PoE
capable switches through EPS cables. 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.
Each EPS port operates individually. The 620 RPS/EPS has two EPS ports that
can provide up to 398 W of PoE power at 50 VDC each.