recommend a 3 phase converter..cost spread issue

[retired]

i am looking at a 3 phase converter for a 3hp 220 3p lathe.
strange price spread
under $100 or over $200
any input ?
here are 2 samples

https://www.ebay.com/itm/2-2KW-3HP-V...-/232756241295

and
https://www.amazon.com/Teco-Variable.../dp/B01IFEOVSE

thanks

[savet06]

I have an Hitachi 2.2kw for my lathe and an automation direct 2hp for my mill and am very happy with both. The automation direct drive was a little easier to set up, but both work well. Once you get the hang of reading the manuals and get yourself a membership to thehobbymachinist.com you will be all set. There is a member there, mksj, that is a wizard with these drives and has links of parameters to get the best from your drive. I use mine simply as a phase converter (inverter? I can't keep them straight) and don't use the speed pot or other features requiring a whole lot of extra wiring.
Hope this helps,
Mike.
I got my automation direct from their website and the hitachi from...maybe wolf automation? Amazon? I can't recall, but I went for the best price. I also picked up a breaking resistor from ebay for like $30 or so. Great addition to the machine and very easy to install. Stops a chuck going 1200rpms in about 2 seconds, and faster if I want in the slower speeds. Anything over 1200 rpms you would have to set the stop speed to about 4 seconds or so.

[Butch Lambert]

Both my mills are step pulley Bridgeports. One has a Hitachi VFD with speed control pots and braking resistors. The other is a Motortronics with speed control and braking resistors. I love them.

[Michael Huebner]

i am looking at a 3 phase converter for a 3hp 220 3p lathe.
strange price spread
under $100 or over $200
any input ?
here are 2 samples

https://www.ebay.com/itm/2-2KW-3HP-V...-/232756241295

and
https://www.amazon.com/Teco-Variable.../dp/B01IFEOVSE

thanks

I used the Hitachi Wj200-022sf Variable Frequency Drive 3 HP 230 VAC Single Phase Input which is in the next bracket around $300.
Also depending on how safe you want the installation to be, you should have a "Safety Relay" like a Omron 9SX-G226-T15, which you wire up to stop the inverter working when you e/stop your machine. (I would suggest most don't do this, but I did)
You can try www.CLRWTR.com and ask about the cheaper drives.

[retired]

i am planning on just phase conversion and std lathe speeds. knowing i can vary speed
if i pick up a vibration at a fixed speed is nice. i have seen others with this issue ,, so far i have not.
foot brake on the lathe so no need for a electric brake.

i'll go look at your suggestions.

[retired]

i went with a lapond 4hp for 199. looked at the hitachi , but the current model
had no reviews.
got electricians coming over for an est to run 220.
a may have a working lathe before Christmas.
nice present to myself!

thanks

[burtona]

I use a static phase converter (PHASE-A-MATIC) on my Emco V13 Maximat 3 phase motor. It's worked well on my lathe for 15-17 years with no peoblem. I don't have a brake - foot or electric - on my lathe but I got plenty of time for it to come to a stop. I think I paid $100 for the PHASE-A-MATIC when I bought the lathe.

[killswitch505]

I put an automation direct GS2 3hp on my mill and lathe last year super easy setup and controls you can remotely locate the HMI on your lathe or mill. I set up the brake function on my lathe for a thread stop using a precision micro switch giving me .0002 repeatability after playing around with the deceleration times. Itmakes threading to a shoulder a dream I went from threading at 30 RPM to 300 no need for a relief cut

https://www.automationdirect.com/adc..._vac)/gs2-23p0

https://youtu.be/Ncc72aKgzVY

[retired]

yes but OUT OF STOCK.
I DID LOOK AT IT
no one answered when i called...
2 strikes and you are out in this case
i did a search no one else had it

I put an automation direct GS2 3hp on my mill and lathe last year super easy setup and controls you can remotely locate the HMI on your lathe or mill. I set up the brake function on my lathe for a thread stop using a precision micro switch giving me .0002 repeatability after playing around with the deceleration times. Itmakes threading to a shoulder a dream I went from threading at 30 RPM to 300 no need for a relief cut

https://www.automationdirect.com/adc..._vac)/gs2-23p0

https://youtu.be/Ncc72aKgzVY

[killswitch505]

Damn..... they’re usually great to deal with I’ve used their brand drives on dozens of projects over the years

[retired]

yes . just poor timing

Damn..... they’re usually great to deal with I’ve used their brand drives on dozens of projects over the years

[savet06]

Retired,
I don't have a foot brake ok my lathe either which is why the bra king resistor is so nice. When I kill the power to the forward or reverse lever the chuck stops very quickly and doesn't put too much pressure on the circuitry of the drive. I don't have a thread dial for my machine yet so I have to kill the power and quickly get the cross slide dial backed out or I will hit the shoulder. The faster that chuck stops the less chance I have of hitting the shoulder...that micro switch idea might just have to be on my Christmas list. I really need to just build the darn thread dial!

[Pete Wass]

turning your tool upside down and threading backward? I do this and have since I started, even with the Heavy 10. Never had the chuck loosen. The Europeans and Ausies I have watched on Youtube don't use threading dial. It's nice to be able to stop quickly though. Joe Pie has a good Youtube on threading the way I have just described.

Happy Holidays,

Pete

[retired]

well gentlemen,
i am back.
i have it all wired and the vfd will NOT change to 60 hz...stuck on 50.
i go to the setup step for hz, it starts in default at 50, but no action by me will get it to
change to 60. not happy.

rep says i cannot "START VFD, THEN START LATHE"
they say, start lathe then vfd.....will this work ?

i do not want to rewire my ENTIRE lathe, i just want 3p.

please some one tell me how to start my lathe with a vfd WITHOUT rewiring my lathe

[brickeyee]

The hardest thing is instant stopping a 3-phase motor.

The currents and voltages spike up very badly and can instantly destroy the driver devices in the VFD unit.