Depends how much cash you have and how much trouble you want. For a "plug
and play" solution look at the Newton Tesla setup:
Not cheap but very easy to fit and works like a dream - just swap the motor
pulley to the new motor, bolt the motor into place and plug into the
Alternatively, a three phase motor and something like the Eurotherm drive:
Either way, well worth doing
On 2 Mar, 17:10, "Norman Billingham" <norman.at.tumulus.org.uk> wrote:
post in the yahoo myford group that you would like to do this
and I'm sure there will be one or two members there ...who have gone
the other way
and taken all the three phase equipment off their three phase
and gone to 240 volt
and will only be too willing to sell you the old gear .
all the best.markj
and if you can find them
they also make single phase to single phase inverters as speed
BTW .......i still have a myford three phase motor ........transformer
for the lighting and control circuit ...and the myford three phase
suds pump ....make me an offer ......
all you need to find after that is ......a myford 3 phase motor
starter relay and possibly reverse switch
all the best.....markj
Its really simple; just get a 3-phase motor to replace the single phase
one you have, and a matching single to 3 phase inverter VFD. Make sure
the motor you get is the type that can be rewired for delta (240v) or
star (415v) - these have 6 terminals and 3 "straps" inside the
connection box. You can get 1-3 phase inverters with built-in voltage
transformers (240-415), but they are expensive - its cheaper to get a
The biggest problem I came across was in deciphering the manual for the
inverter - I eventually discovered that they are notoriously abstruse.
My first inverter was a Mitsubishi S520 and when I eventually figured it
out it worked fine. I have subsequently converted 3 milling machines and
a drill press - all using Mitsubishi inverters.
I can help with setting-up the inverter - as long as its a Mitsubishi.
Once you have electronic speed control you'll never want to go back.
Regards, Gary Wooding
(To reply by email, change feet to foot in my address)
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