Fire-Lite LCD-80FC Remote Fire Indicator - Manual (Page 10)

10 LCD-80FC Instruction Manual — P/N 53244:B 5/13/2013
The LCD-80FC Indicator Typical Configuration
2.5 Typical Configuration
The LCD-80FC Indicator 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-80FC. Refer to the appropriate FACP manual for programming information.
The LCD-80FC offers multiple indicator locations with the capability of Local Silence and Local
Lamp Test functions.
FDU-
80
ms2
.wm
f
Indicator
Indicator
Indicator
Figure 2.3 Typical Configuration
Terminal Mode
EIA-485
(2-wires)
24VDC
(2-wires)
See Note 1
24VDC
EIA-485
Terminal Mode EIA-485
return (2-wires)
FACP
NOTE:
1. 6,000 feet (1,800 m) maximum distance @ 18 AWG (0.75 mm2) between the FACP and the
first LCD-80FC, between each LCD-80FC and from the last LCD-80FC back to the FACP.
2. Up to 32 LCD-80FC Indicators may be used on the EIA-485 circuit. Refer to the specific FACP
manual to determine the maximum current available for powering the LCD-80FC. If additional
indicators 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-80FC Indicator 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 indicator on the line.