LCD-80F Annunciator Typical Configuration
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Document 51338 Rev. B 08/24/05 P/N 51338:B
1.4 Typical Configuration
The LCD-80F Annunciator mimics the FACP display, has full point-
display capacity and requires no programming. Note that the FACP may
require programming to allow communication with the LCD-80F. Refer
to the appropriate FACP manual for programming information.
The LCD-80F offers multiple annunciator locations with the capability
of remote Acknowledge, Signal Silence, Drill and Reset functions.
Notes:
1. 6,000 feet (1,800 m) maximum distance @ 18 AWG (0.75 mm
2
)
between the FACP and the first LCD-80F, between each LCD-
80F and from the last LCD-80F back to the FACP.
2. Up to 32 LCD-80F Annunciators may be used on the EIA-485
circuit. Refer to the specific FACP manual to determine the
maximum current available for powering the LCD-80F. If
additional annunciators are connected, the FCPS-24 may be used
to supply additional power. Power supplies used for this purpose
must have their negative terminals commoned together.
3. Between each LCD-80F annunciator are four wires - a twisted
shielded pair for data communications and a pair for 24 VDC
power. The return circuit only requires two wires for data
communication supervision, wired from the last or only
annunciator on the line.
Ter mi nal Mode
EIA-485
EIA-485
Terminal Mode EIA-485
return (2-wires)
See Note 1
(2-wires)
(2-wires)
24 VDC
24 VDC
FACP
Figure 1-5: Typical Configuration
FDU-80ms.cdr
Annunciator
Annunciator
Annunciator
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