Re: [CAD_CAM_EDM_DRO] About 5-wire 5-phase Vexta motors

On Thu, 25 Sep 2003 17:17:56 +0100, you wrote:

>If I am not mistaken, 5 wire motors actually have 4 coils with 1 common
>connection and can only be driven unipolar; 5 phase motors have 10
>wires.

I was taking 5 phase at face value.. I'm not sure how 5 wires would
have gotten that, but that's what he said.

>The 5 wire motor is effectively what you would get if you connected
>the 2 centre taps together on a 6 wire motor. To check this, select one of
>the 5 wires & mesure the resistance between that and each of the other 4 in
>turn. If you happen to have picked the common wire as the first wire, the
>resistance readings will all be the same. Otherwise, one of the readings
>will be half the value of the other 3, and the second wire that gives the
>1/2 reading is the common connection.

Which is completely correct. Perhaps a part number for the motor
might help us figure out the current and voltage characteristics, if
they're not on the motor.

if it is a standard 2 phase motor, even unipolar only, there are a
number of chips that can drive that directly.

Harvey

>
>
>Regards,
>Tony
>
>
>
>At 10:28 25/09/2003 -0500, you wrote:
>>On Wed, 24 Sep 2003 22:33:59 -0000, you wrote:
>>
>> >Hi everybody! I just got a used 5-wire 5-phase Vexta motor. I need it
>> >for a school project. But I need to know if it can be handled by a
>> >microcontroler o PC, is it possible? I thought only a bit pattern
>> >into each of the 5 wires will do the work, is it correct?
>> >
>>
>>Microcontroller or PC will do the job, but you will have to take the
>>logic level signals you generate and make them drive the motor. You
>>will have to use darlington or FET transistors to do this, but I'm not
>>personally familiar with 5 phase motors. I'd go to their website for
>>all the information I could find, and pay special attention to the
>>parts that tell you how to drive the motor.
>>
>>The actual program in a microcontroller is going to be relatively
>>simple, involving the timer/counter part of the chip, 5 output lines,
>>and some input lines to tell the chip what you want to do.
>>
>>Harvey
>>
>>
>> >Thanks for any help, I'm new at this!
>> >=D
>> >JAV
>> >
>> >
>> >
>>
>>
>>
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>Regards,
>Tony
>
>
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>OFF Topic POSTS: General Machining
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>http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list.
>
>NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
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