FireFinder
™
Installation Commissioning & Operation
Page 16
5.18 Main Board BRD85MBA
The Main Board is the " heart " of the FACP and carries the devices for interconnecting to all the other
Boards, a buzzer for auditory indication, the backlight power supply for the LCD and CPU Reset.
The Main CPU is mounted on this board and connected to it by CN11. The main connection board then
provides interfacing to
➢
Up to 4 Slave CPU’s
➢
A printer
➢
A Modem/Graphics Output
➢
An Expansion Panel
➢
An Internal serial bus
➢
An External communication bus.
CN8 provides a serial data (RS232) port for interfacing to the outside world eg modems. This facility is
implemented via U15.
U21 provides the real time clock for the panel.
U19 provides non volatile memory in the form of an EEPROM.
The board also provides a data bus for the BRD85CPU processor.
RV1 – LCD contrast adjust
Supply and Current = 27VDc @ 120mA
Connections
CONNECTOR
CONNECTS
TO
CN1
Keyswitch
Input
CN2
Expansion
Panel
CN3
Serial
Communication
Port
CN4
Front
Keypad
CN5
Printer
CN6
Misc
CN7
Brigade
Output
CN8
Modem
CN9
External Buzzer Output
CN10
Slave CPU output 1
CN11
Main
CPU
CN12
LCD
Expansion
Lead
CN13
Slave CPU connection
CN14
Slave CPU connection
CN15
Slave CPU connection
CN16
27VDC
in
CN17
To LCD Backlight supply
CN18
External
Loop
Communication
CN19
LCD
Characters
CN20
RS485 Communications Port 1
CN21
RS485 Communications Port 2
Summary of Contents for SP Series
Page 2: ......
Page 110: ...FireFinder Installation Commissioning Operation Page 104 Notes ...
Page 111: ......