Belmont FMS2000 - Computer Board

4. Theory of Operation
4-41
3. Computer Board
Computer Board Diagram
10 BIT
A/D
CPU
HARDWARE FAIL
PROCESSOR
OUTPUT
THERMOPILE
VOLTAGE
INPUT
AMBIENT
TEMPERATURE
30V
SUPPLY
PRESSURE
OUTPUT
AMBIENT
TEMPERATURE
VALVE
CURRENT
INPUT
THERMOPILE
VOLTAGE
THERMOPILE
REF.
ON/OFF
SWITCH
5V REF
.
DOOR OPEN
DETECTOR
RS232 PORT
RAM ROM
RTC
, RAM,
WATCHDOG
DATA ACCESS
CONTROL
BATTERY
DISPLAY
CONTROL
SYSTEM
VALVE MOTOR
WATCHDOG
PUMP MOTOR
WATCHDOG
DISPLAY
MEMORY
RESET
CONTROL
MOTOR SPEED
& DIRECTION
AIR DETECTOR
TEST
SOUND
CONTROL
KEYBOARD
SCAN
VALVE MOTOR
CONTROL
PUMP MOTOR
CONTROL
FLUID OUT
DETECTOR
AIR DETECTOR
ON/OFF SWITCH