speed controller

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sarex - 28 Jan 2006 09:28 GMT

i have a v belt driven woodlathe that i want to change to variable
electronic speed control. i dont know if it is single or 3 phase . runs on
240 v. i know enough about electronics to follow a schematic but not enough
to know what i am looking for. i tried google but got lost in the maze. if
anyone could point me in the right direction i would be most thankfull.
thanks in advance
sarex

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Phil Allison - 29 Jan 2006 01:04 GMT

"sarex"

>i have a v belt driven woodlathe that i want to change to variable
>electronic speed control. i dont know if it is single or 3 phase . runs on
>240 v. i know enough about electronics to follow a schematic but not enough
>to know what i am looking for. i tried google but got lost in the maze. if
>anyone could point me in the right direction i would be most thankfull.
> thanks in advance

** You must find out what that motor is first.

If YOU cannot tell by inspection you are in no position to make any sort of
drive unit for it.

Here are some commercial "variable frequency drives" that suit small single
and three phase motors.

http://uk.farnell.com/jsp/endecaSearch/searchPage2.jsp?Ntt=variable+frequency+dr
ive+&newSearch=true&Nto=variabl+frequency+drive+&Nty=1&showImages=true&N=401&Ntk
=gensearch

......... Phil

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Jasen Betts - 29 Jan 2006 02:04 GMT

> i have a v belt driven woodlathe that i want to change to variable
> electronic speed control. i dont know if it is single or 3 phase . runs on
[quoted text clipped - 3 lines]
> thanks in advance
> sarex

240V sounde like single phase a three phase motor would be marked for 415V
and have a 5-pin plug.

if that lathe is driven by an inducion motor (large, quiet, most lathes are)
you're looking for a variable frequency drive, but may should also check
withe the maker of the motor, there's some issues related to running single
phase induction motors under speed...

Signature

Bye.
Jasen

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Electronics Forum / Basics / January 2006

speed controller