I was thinking about drives such as these on Ebay.
https://www.ebay.com/itm/AC220V-2HP-1-5KW-8A-VFD-Variable-Frequency-Drive-Inverter-Controller-Converter/124311510881?hash=item1cf18b1f61:g:dDIAAOSwj1hfRNRg
https://www.ebay.com/itm/1500W-2HP-8A-Variable-Frequency-Drive-Inverter-VFD-Single-To-3-Phase-220V/233690529209?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200520130048%26meid%3D9c6e725f17cc4ccfa318eb7326a84fa0%26pid%3D100005%26rk%3D2%26rkt%3D12%26mehot%3Dco%26sd%3D124311510881%26itm%3D233690529209%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWebWithDarwoV3BBEV2b%26brand%3DUnbranded&_trksid=p2047675.c100005.m1851
If you do a search for "VFD 1.5KW" on Ebay those will pop up.
These are crazy cheap. But if they work and you have a 3 phase drill
press, or a grinder you picked up at a auction, these would be hard to
beat.
Something like this might work on a 3 phase mill spindle motor as well.
Ebay seems to be flooded with dirt cheap VFDs, of unknown quality right now.
Dave
On 12/26/2020 6:22 PM, Gregg Eshelman via Emc-users wrote:
I picked up a couple of 220V 1PH to 220V 3PH VFDs, rated for up to 3HP, for
under $300 each new. Don't recall the brand and I'm not home where I can go
look in the shop.
What I find insane is how *simple* electronic phase converters that do nothing
but change single to three phase, doing nothing to the voltage, no speed
adjusting, no remote control, no where to connect a braking resistor, are so
expensive. $1500 and all it does is exactly the same thing as an old rotary
phase converter.
So rather than a "plug and play" box for my Monarch 12CK I had to buy a fancy
box with almost 100 settings I had to fiddle with just to get it to run the antique 3HP
motor without hitting overload. Still have to slip the clutch a little in higher gears
but once it's turning it's 100% solid. Adding some MolySlip gear lube to the headstock
made it quieter and easier to get spinning.
On Saturday, December 26, 2020, 11:50:37 AM MST, John Dammeyer
<[email protected]> wrote:
I looked at prices for a 2HP 3phase and a VFD (like Hitatchi Vectorless?) and
found without shipping the price was approaching $600. For less than that I
ended up with Bergerda.
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