Main Motor; Motor Speed Control; Tachogenerator - Miele W1903 User Manual

Technical Information
4.13

Main Motor

The Main Motor operates on DC (Direct Current) and operates at various
speeds. The front section of the motor is removable for access to the
Tachogenerator and Motor Brushes. The front section is removable with
the motor installed, allowing it to remaining connected to the drives.
Figure 4-6: Main Motor Assembly
4.14

Motor Speed Control

Motor speed is controlled via the Electronic. The Electronic controls the
switching for the voltage applied to the motor and the field windings.
4.15

Tachogenerator

The Tachogenerator monitors the status of the Main Motor. As the motor
turns, the Tachogenerator creates pulses. These pulses are monitored by
the Electronic for:
Determining if the motor is turning. (The Door Button is disabled by
the Electronic if drum is > 7rpm)
For imbalance monitoring (via erratic pulses)
To monitor motor speed (used to regulate the motor speed)
W1900 Series Clothes Washers
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