Specifications

Ampac Technologies Pty Ltd
FireFinder
TM
Operators Manual
PAGE 14
DOC No:G0109WO1.doc DIR: L:\MANUALS DATE: 30/11/00 REVISION: 3
6.8.1 Brigade / PSU Monitor Board
The API 673 Brigade/PSU Monitor Board is designed to monitor some of the Brigade board outputs,
monitor and control the battery charging/power supply inputs and outputs and to provide relay outputs as
shown in the Fig 5.
The Bells may be terminated to bell outputs 1 and 2 on the API 673 Brigade/PSU Monitor Board. The
alarm outputs are also available on this board.
The FireFind er
TM
provides a monitored bell circuit split to drive two 2 Amp circuits. Each bell circuit
requires a 10K EOL resistor to give a system normal indication. If either circuit is open or shorted, the
buzzer will sound on the panel and a bell fault will be indicated on the LCD in the brigade status display.
These lines are monitored using a small current in reverse polarity to normal. For this reason it is
necessary to connect the bells via diodes, 1N4004 diodes (1A 400V) or equivalent are recommended.
Also observe bell/sounder polarity.
Relay outputs marked NO C and NC are voltage free contacts. Outputs marked +ve and -ve are fitted
with monitoring resistors (10k).
For all outputs combined, total output current is 2A (if 2.5A power supply is being used).
Once you have ensured that all field wiring and devices are installed and terminated correctly the
FireFinder
TM
is now ready to turn on.
Turn the mains power on, and connect the batteries observing correct polarity. The green power on led
should be lit.
OUTPUT RATINGS
Bell 1 2 Amp Fused (F2)
Bell 2 2 Amp Fused (F3)
Plant (Aux) Monitored 1 Amp Fused (F4)
Plant (Aux) Non-Monitored 1 Amp Voltage Free Contacts
Warn Sys (Evac) Monitored 1 Amp Fused (F5)
Warn Sys (Evac) Non-Monitored 1 Amp Voltage Free Contacts
Fault Monitored 1 Amp Fused (F6)
Fault Non-Monitored 1 Amp Voltage Free Contacts
Isolate 1 Amp Voltage Free Contacts
Alarm 1 Amp Voltage Free Contacts
Valve Monitor 1 Amp Voltage Free Contacts
Batt Fail 1 Amp Voltage Free Contacts
Battery Output Thermistor Protected