Document #50580 Rev. C 8/12/97 P/N 50580:C
13
Components
1.5
Components
Main Circuit Board
The Master Unit main circuit board contains the
system's CPU, tone generators, auxiliary 35 mA
output, DIP switches for field programmable fea-
tures, digital message recorder/generator, inte-
gral microphone input and preamplifier, other
primary components and wiring interface com-
ponents. One amplifier module is supplied
mounted to the main circuit board. Optional
modules can be plugged in and mounted to the
main circuit board. The main circuit board is
delivered premounted in the cabinet.
Audio Amplifier Module (FC-AAM25)
A single Audio Amplifier Module is installed in the FIRE•COMMAND•25/50. The amplifier provides 25 watts
of power at 25 V
RMS
. An optional module, P/N: FC-XRM70, converts the 25 V
RMS
output to 70.7 V
RMS
. One
fully supervised and power-limited speaker circuit is provided on the amplifier module. The circuit can be wired
for Style Y (Class B) or Style Z (Class A) operation.
LEDs are provided to indicate Amplifier Supervision (green indicates amplifier is functional) and Circuit Trouble
(yellow indicates field wiring fault or amplifier fault). The LEDs are only visible with the panel door open.
Cabinet
The cabinet is red with an attractive navy blue front overlay. A clear window allows
viewing of status LEDs and location of microphone. The backbox measures 18.5" x
15.5" x 4.25" and provides space for two batteries (up to 7 Amp Hours).
Batteries
The cabinet provides space for 7 Amp Hour batteries (optional Power Supply/Battery
Charger module installation required). If larger than 7 Amp Hour batteries are to be
installed (17 AH maximum), use the Fire•Lite BB-17F battery box or similar UL listed
battery box. Batteries and BB-17F battery box must be ordered separately.
Dress Panel
The Dress Panel is supplied standard with the system. It mounts to the
cabinet with two supplied screws. The Dress Panel protects the user from
high voltages and circuit boards from accidental damage. All system
LEDs are visible with the Dress Panel installed.
1.6
Optional Modules
FC-AAM25 Audio Amplifier Module
An optional second identical audio amplifier can be plugged into connector P3 located in the lower center of the
main circuit board in the FIRE•COMMAND•25/50. This amplifier also provides 25 watts of power at 25 V
RMS
and can therefore be used to expand system power to 50 watts (providing dual 25 watt speaker circuits) or it can be
used as a backup amplifier. An option module can also be used to convert the 25 V
RMS
output to 70.7 V
RMS
.
Note: For ease of access, all wiring should be connected to the terminals on the main circuit board terminal blocks
TB2, TB4, TB5 and TB6 prior to installing the secondary Audio Amplifier Module.
FIGURE 1-4:
Main Circuit Board
Audio Amplifier
FIGURE 1-5:
Cabinet
FIGURE 1-6:
Dress Panel
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