Lucent Technologies Release 6 manual Connect Remote Power Off Cable External Alarm Cable

DEFINITY Enterprise Communications Server Release 6	Issue 5
Installation and Test for Multi-Carrier Cabinets 555-230-112	May 1998
1 Install and Connect Cabinets
Connect Remote Power Off Cable and External Alarm Cable	Page 1-25

Connect Remote Power Off Cable and

External Alarm Cable

Figure 1-9 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 outside of the equipment room.

Carrier

circuit

breakers

Connect RPO cable here (J21)

Connect external alarm cable here (J18)

Pin 6 (-RPO)

Pin 2 (+RPO)

	External
psdf002 CJL 081596	alarm cable

Figure 1-9. Remote Power Off Cable Connections — Part 1

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 Figure 1-9.

2.Route the opposite end of the wires to the EPO switch. The opposite end of the RPO cable connects to the internal relay.

NOTE:

The EPO switch and the auxiliary contacts (inside the EPO switch assembly) are customer-provided.