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Speed Control:
The speed control board is mounted to the bottom plate
of the washer in the left rear corner of the washer. The
speed control board controls the following operations:
Note: The control board is mounted in the console.
The speed control board is mounted in the
left rear corner of the washer.
1. The speed of the drive motor by converting input line
to neutral single phase 60 Hertz voltage, to a varying
frequency, three phase output voltage from zero to
300 VAC. By varying the amount, frequency, and
polarity of the voltage and comparing the input from
the tachogenerator on the drive motor, the speed
control board can operate the drive motor at a
preprogrammed speed and direction.
2. The balance of the load in the washer during the
spin cycle by converting the sine wave from the
tachogenerator to square waves and comparing the
distance between the square waves.
Motor:
The motor is mounted to the bottom of the outer tub.
The motor is an induction, three phase AC motor that
varies speeds when the voltage from the speed control
board varies in frequency and amount. The motor has a
tachogenerator that inputs the speed of the motor to the
speed control board.
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