Controlling AC motors

[Luciano]

Hi,

What is the number of leads coming out of the motor?

Best regards,

Luciano

[The Master]

Just 2. Its not a stepper motor (shame)

[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).

* * *

Example of Reversible AC Synchronous Motor:



Best regards,

Luciano

[mackrackit]

As you have probably figured out by now the "B" stands for Bidirectional.

Motors like this are designed to change directions under a certain load or if stopped. (light bar in scanner?)

Like Alain said, contact the manufacturer to find out how they did it in this motor but it is most likely like Luciano shows with the CW/CCW built in on an actuator. Now if you feel lucky take one apart and see if they can be bugged into.

[The Master]

I see. I was hoping there would be a controllable reason why they go a random direction on startup. I will just make a simple on/off circuit for them then.

mackrackit, they are in abstract twister 3's

Thanx everyone for your help

[mackrackit]

mackrackit, they are in abstract twister 3's

You have lost me, but it has been a long day.

[Luciano]

You have lost me, but it has been a long day.

Hi Dave,

I had to google in order to find out.

The new Twister 4:
http://www.abstractavr.com/products/twister4.php



Best regards,

Luciano