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5 ELECTRICAL COMPONENTS AND FUNCTIONS
5.1 EDW2000 electronic control system
The EDW2000 electronic control system is composed of a main board ("input board", see fig. 1) and a
display board ("output board", fig. 2) that are housed in the control panel, and a "mother board" (fig. 3),
which is located at the bottom of the appliance (toward the front). The board is anchored to the base by a
plastic support.
fig. 1
5.1.1
Functions provided by the mother board
SENSORS
Acquires cycle programming through the input and output boards.
Powers all the electrical components (solenoids, wash pump, detergent/rinse aid dispenser, drain
pump, heating element, fan motor)
Controls the temperature of the wash water using a signal from an NTC sensor, and controls the
speed of the wash pump using a signal from a tachometric generator.
Monitors the pressure switches and the rinse aid / salt sensors.
5.1.2
Memories contained in the electronic control system
External serial
port
ROM
Asynchronous
The main board is equipped with an EEPROM that is external to the microprocessor and which is
used to store data on machine configuration, description of the cycle, and status of the cycle in case of a
power failure or alarm.
The configuration data is programmed at the factory by a computer with a DAAS interface. This
data determines the operation of the appliance (number and types of programmes, options, LEDs, etc.).
SOI/TD - PR
fig. 2
INPUT AND OUTPUT BOARDS
LEDs
µP
Internal serial
RAM
Synchronous
Display
Buttons
µP
(Buzzer)
MAIN BOARD
EEPROM
port
19
fig. 3
ELECTRIC
LOADS
Power failure and
machine status
Configuration of
appliance
Description of
cycle
599 35 94-03
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