Controlling AC motors

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  1. - 19th October 2007, 13:11 #1
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    If the motors are not 3 phase then they will have a starting cap or in small motors could have a starting winding that drops out at a certain speed.

    You are correct about the sine wave, that is why the above is needed.
    Dave
    Always wear safety glasses while programming.
  2. - 19th October 2007, 16:47 #2
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    ok. there must be one built into it. does that mean it is or isnt possible to control the direction?
  3. - 19th October 2007, 17:26 #3
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    Quote Originally Posted by The Master View Post
    ok. there must be one built into it. does that mean it is or isnt possible to control the direction?
    Do you have the make and model number of the motor?
    Dave
    Always wear safety glasses while programming.
  4. - 19th October 2007, 17:46 #4
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    They are Rotalink 5025-24050-30B. Google found nothing and i cant find that exact model on their site. shame they dont have a search box
  5. - 20th October 2007, 09:44 #5
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    Quote Originally Posted by The Master View Post
    They are Rotalink 5025-24050-30B. Google found nothing and i cant find that exact model on their site. shame they dont have a search box
    Decoding their code ...

    shows 5024 is a 24 mm thick case and 5025 a 25 mm thick case ...

    You'd better send them a mail ... for your problem !

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    certainly the answer is " RTFM " or " RTFDataSheet " !!!
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  6. - 20th October 2007, 10:19 #6
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    This is a general question for any motors like that. There are some others that i would like to do the same thing with but i dont know the numbers of those.

    It seems like they were designed to move in a random direction. I just want to know what causes the randomness so maby i can make it predictable.

    Not sure about these motors but the other ones i have will change direction if you stop them with your hand.

    I think i might end up with a simple on/off circuit instead of directional control
  7. - 20th October 2007, 10:54 #7
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    Hi,

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

    Best regards,

    Luciano
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