Fire-Lite LCD-80F Remote LCD Annunciator - Manual (Page 14)

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.
Terminal 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
F
D
U
-80
ms
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Annunciator
Annunciator
Annunciator