Controlling AC motors

[Luciano]

Hi,

If your AC synchronous motor has only two leads (one winding), then
you cannot control the initial direction unless the motor uses a
mechanical device (anti-return) which is placed on the rotor.

Reversible AC Synchronous Motors have 4 leads or more. (Two windings or more).

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Example of Reversible AC Synchronous Motor:



Best regards,

Luciano