Rps Port Operation; Eps Port Operation - HP ProCurve J8161A Installation And Getting Started Manual

Introducing the HP ProCurve 600/610 External Power Supplies

RPS Port Operation

RPS Port Operation
The HP 600 RPS/EPS can be connected to six switches through RPS cables,
but can provide redundant power to only one switch whose AC power or
internal power supply fails. The unit can provide up to 180 W of power at
+12 VDC to a single switch.
Each RPS port has a priority, with port 1 the highest and port 6 the lowest.
The HP 600 RPS/EPS always provides power to a switch connected to a higher
priority port, if necessary by dropping power to a switch on a lower priority
port. The switching of power from low-priority ports to high-priority ports is
completely automatic and effectively instantaneous.
The HP 600 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 HP 600
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 HP 600 RPS/EPS to shut down the port.

EPS Port Operation

The HP 600 RPS/EPS supports two EPS ports and the HP 610 EPS supports
four 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.
The EPS ports operate as a pair. The HP 600 RPS/EPS has one pair of EPS
ports that can provide up to 408 W of PoE power at -50 VDC. The HP 610 EPS
has two pairs of EPS ports, each of which can provide up to 408 W of PoE
power at -50 VDC. There are four possible power allocations for each EPS port
pair:
1-8
Maximum power allocated to the first port and none to the second
Maximum power allocated to the second port and none to the first
Each port in the pair are allocated half of the maximum power
No power allocated to either port in the pair