Miele W 1918 Technical Information download pdf (Page 32)

Technical Information

W1900 Series Clothes Washers

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:

x Determining if the motor is turning. (The Door Button is disabled by

the Electronic if drum is > 7rpm)

x For imbalance monitoring (via erratic pulses)

x To monitor motor speed (used to regulate the motor speed)

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Miele W 1918 Technical Information Page 32