On Sat, 04 Aug 2007 12:24:17 -0700, Grant Erwin wrote:
Ignoramus12500 wrote:
On Sat, 4 Aug 2007 09:11:30 -0700, azotic wrote:


Thanks for the tip, the rotary phase converters don't have the
flexability i want and are to noisy for me. I was thinking about
using one of my old note book computers interfaced to some power
semiconductors and hopefully end up with a user programable vfd.



Do not underestimate the cost of this project, and you will end up
with something rather substandard. But it is fun.

For example, single phase input rated, 1 horsepower VFDs can be bought
on eBay for about $47 plus $12 shipping. It is hard to beat that.

i

Got an example of that price point, Igor?

Well, check out eBay item 180144202452, "ALLEN BRADLEY AC DRIVE".

Allen Bradley VFD
CAT NO. : 160S-AA04NSF1P1

The manual for it is he

http://igor.chudov.com/manuals/Allen...VFD-Manual.pdf

Check page 14 of it to see that it is a Bulletin 160, single phase
input, 240v, 1 HP, open enclosure, analog signal follower, P1
(includes programmer keypad).

It went for $47, the seller charged me $12 for shipping. It would sell
for less, if I had ability to snipe at the last second, which I did
not because I was with my 1.5 year old after he took a bath. So I
placed my last bid 3 minutes before auction end.

Beware that 160-B* drives are 380-460 volts only. You need 160-A*. The
letter S after 160 denotes single phase input.

i