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Office alarm cable installation

Description

Office alarms are the common method used in a central office for maintenance personnel

to quickly isolate a failure. Perform this procedure if connection to the office alarm system

is required.

Note:

capable of switching 1 amp at 50 volts, or 2 amps at 25 volts. Their ability to switch

large transient currents means that they can, if necessary, switch up to ten 5-watt aisle

pilot lamps.

If transient voltages or currents are above these limits, transient noise-suppressing devices

such as diodes or contact protection networks must be used to keep within the voltage and

current limits. If these protection devices are not sufficient, an external buffer relay MUST

be provided.

In all cases, and as a matter of good practice, suppression devices such as diodes or contact

protection networks must be provided across any external relay coil being driven by the

Alcatel-Lucent 1665 DMX High-Capacity shelf to limit transient voltages and currents.

Office alarm cable assemblies are listed in

(p.

1-82).

Alarm Mult

Office alarm cabling in a Alcatel-Lucent 1665 DMX High-Capacity shelf bay starts at the

bottom shelf which is cabled directly to the office alarm system. Then as shelves are added

to the bay, the office alarm connection is extended by multing the alarm cabling from shelf

to shelf (bottom to top). Alarm mults do not leave the bay.

For example, J12 of one shelf should be connected to the office alarm terminal. J13 of the

same shelf should be connected to J12 of the next Alcatel-Lucent 1665 DMX High-

Capacity shelf and the same procedure should be continued to connect more shelves.

1 - 7 8

The office alarm relay contacts are rated at 50 VA which means that they are

Office alarm cable installation

Table 1-25, "Office alarm cable assemblies"

365-372-304R7.1

Issue 2 March 2008

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Office Alarm Cable Installation - Alcatel-Lucent 1665 Installation Manual