Activity relays must be supervised by an IRC “S” zone when FCCA-
4/6 is not adjacent to the ATP.
TB1-5/6 Channel 1 Pre-Amp Output
This supervised FCCA-4/6 output signal is connected to the channel 1
pre-amp input terminals of the Amplifier Terminal Panel (ATP) or an
AA75 series amplifier. This output is supervised by the FCCA-4/6 for
open circuits. When a trouble is detected a 4110 supervisory open
condition is generated at address 41 for PCB A (bottom panel); 42 for
PCB B (middle panel); and 43 for PCB C (upper panel). Additionally,
the channel 1 output features backup pre-amp switching. A channel 1
pre-amp failure switches the channel 2 pre-amp signal to the inputs of
both the channel 1 and channel 2 power amplifiers.
The method of the FCCA-4/6 pre-amp output circuit supervision
required is determined by the number of amplifiers on the pre-amp
riser as shown on the table below.
TB1-7 Pre-Amp Shields
Terminate pre-amp cable shields. This is connected to earth ground.
TB1-8/9 Channel 2 Pre-Amp Output
This supervised FCCA-4/6 output signal is connected to the channel 2
pre-amp input terminals of the Amplifier Terminal Panel (ATP) or an
AA75 series amplifier. This output is supervised by the FCCA-4/6 for
open circuits. When a trouble is detected, a 4111 supervisory open
condition is generated at address 41 for PCB A (bottom panel); 42 for
PCB B (middle panel); and 43 for PCB C (upper panel). Additionally,
the channel 1 output features backup pre-amp switching. A channel 2
pre-amp failure switches the channel 1 pre-amp signal to the inputs of
both the channel 1 and channel 2 power amplifiers.
The method of the FCCA-4/6 pre-amp output circuit supervision
required is determined by the number of amplifiers on the pre-amp
riser as shown on the table below.
FCCA Pre-Amplifier Termination
# Amps/Model
Termination
None or DAPM Module
10 k
Ω
1/2 W P/N 260002
1 to 25 AA-75
DAPM Card P/N 130101
1 to 5 IB3 125/250
1.8 K
Ω
1/2 W P/N 260044
6 to 10 IB3 125/250
2.2 K
Ω
1/2 W P/N 260045
11 to 15 IB3 125/250
3.0 K
Ω
1/2 W P/N 260046
16 to 20 IB3 125/250
3.9 K
Ω
1/2 W P/N 260001
21 to 25 IB3 125/250
6.8 K
Ω
1/2 W P/N 260047
22
FCCA Series Manual
firealarmresources.com
