Shield Not In Conduit - Honeywell Fire-Lite Alarms LCD-80F Manual

Remote fire annunciator

Table of Contents

EIA-485 Shield Termination

5.1

Shield Not in Conduit

The EIA-485 line allows the FACP to communicate with the LCD-80F

Annunciator. The shield for the EIA-485 line must be connected to earth

ground at the FACP but must be left floating (no connection) at the

annunciator if it is the first or only device on the EIA-485 line. If a

second annunciator is connected, the shield leaving the first annunciator

must be left floating. The shield entering the second annunciator must

be connected to the three-gang box or Earth Ground terminal (P2-7) on

the second annunciator. If additional annunciators are connected, the

shield leaving each enclosure must be left floating and the shield enter-

ing each must be connected to the three-gang box or the Earth Ground

terminal (P2-7) on the annunciator.

Figure 5-1:

EIA-485 Without Conduit

Connect the drain wire to the outside of the

FACP cabinet via a BX-type connector.

Shield Drain Wire

FACP

Document 51338 Rev. B 08/24/05 P/N 51338:B

FACP Backbox

Shield

annunciator

EIA-485 Loop

not in conduit

Shield Not in Conduit

(+) EIA-485

(-) EIA-485

FACP

annunciator

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