Technical Support - MDM
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599 77 39-16 Rev. 00
11.8.3 Power supply to motor
The PCB powers the motor via a TRIAC switch; the direction of rotation is reversed by switching the contacts on
the two relays (K1-K2), which modify the connection between the rotor and the stator.
In certain models, a third relay (K3) is used to power the stator (full or half field) according to the spin speed.
The motor speed is controlled by the signal from the tachometric generator.
During the spin phases, the micro-processor performs the anti-foam and the anti-balancing check procedure.
1. Main electronic circuit board
2. Door safety interlock
7. Universal motor
7a. Tachometric generator (motor)
7b. Stator (motor)
7c. Rotor (motor)
7d. Thermal cut-out (motor)
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