Avaya S8500 Manual page 145

Connecting remote power off cable, if required
Part 1, on page 136 shows the location of the Remote Power Off (RPO) cable. The opposite end of the
cable connects to the Emergency Power Off (EPO) switch located for the equipment room.
Even though the equipment room EPO switch disconnects main AC power to the equipment room, it
cannot disconnect the battery power from the J58890CH. An auxiliary set of contacts inside the EPO are
used for this function.
1
Plug the RPO cable into the connector shown in
— Part 2,
2
Route the opposite end of the wires to the EPO switch. The opposite end of the RPO cable
connects to the internal relay.
Figure 34, External alarm cable connection,
contacts inside the EPO switch assembly and how they connect to the internal relay.
3
Connect the RPO wires to the auxiliary contacts on the EPO switch. See
alarm cable connection,
Installing the Avaya S8500 Media Server with an Avaya G650 Media Gateway
December 2003
on page 137.
NOTE:
The EPO switch and the auxiliary contacts (inside the EPO switch assembly) are
customer-provided.
CAUTION:
The auxiliary contacts inside the EPO switch assembly must close when the switch is
pressed. This contact closure energizes the relay inside the power distribution unit,
causing the connection to the battery holdover assembly to open.
on page 147.
NOTE:
The EPO switch and the auxiliary contacts for the RPO connection are customer-supplied.
Figure 32, Remote power off cable connections —
Figure 33, Remote power off cable connections
on page 138 shows the cabling from the auxiliary
Figure 41, External
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