??? ??? Al there are ton's of info online bout recycling
treadmill motors for use in lathes & smaller mills? . I have a
few I've been collecting for when I learn enough to program &
make some simple pwm controller's with
??? ??? a Arduino .seem's simple enough , just gettin my 62 year
old brain to make it happen
??? ??? animal
On 1/6/2019 10:50 AM, a_rodi2 wrote:
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Greetings
group... while I have recently upgraded from my 1036 model ¡°d¡± (I
think) atlas to a 12¡± (model?101.28990)... but with VFD
discussion, I have this... an old bandsaw I repowered with a
treadmill motor... the motor being 2 1/2 hp DC with the matching
controller included on a Craigslist found treadmill. ?I replaced
the slide POT with a rotary and revised the drive for really slow
band speed.. I wonder if this could be done on a lathe..maybe with
addition of a rpm readout ....
(The guards, belt and motor are not shown)....
Al (newbie to the group but long time atlas user)
Sent magically?
On Jan 6, 2019, at 10:27 AM, cwlathes <
carvelw@...>
wrote:
Hi Raymond ,
?
The VFD¡¯s that I am familiar
with ( Hitachi and Yaskawa) , are current limited /
protected ?. . .?
So if the motor attempts to draw more current than the
VFD is capable of delivering , then it will reduce its
voltage to limit the current to its maximum rating . .
.?
So one wouldn¡¯t be able to get more than say 750 watts
out of a 750watt VFD irrespective of the motor size as
I understand it . . .
Take care,
?
Carvel
?
From:
[email protected]
[mailto:[email protected]]
On Behalf Of mondosmetals
Sent: 06 January 2019 06:57 PM
To: [email protected]
Subject: Re: [atlas-craftsman IO] Finally
workbench for my lathe
?
Carvel:
You don't see any possibility of an over-current
condition burning up the VFD? If that is a 1Hp motor and
it is put under a heavy load the electrical demand in
Watts (or joules if you want to get that deep) will
still be there but the 3/4 Hp rated VFD will not be able
to deliver so the current will increase.? No?
Raymond
