[draemr]

Hi,

I guess I have done a stupid thing, but I hope someone can help me out.

I wanted to put a brushless motor on my home built mill and found this great deal on this motor on ebay.... Seemed like a good idea at the time.

It was advertised as an brushless DC servo motor. It has a specifications plate (picture attached)

What literature I can find from Kobold in germany, it is a three phase synchronous servo motor. Its a Kobold KSY 464.80 servo motor. Not the current model "D" KSY, but the older one.

Seems like a strong motor, 8000 rpm, 210 volts, 13 amps. So now, I am looking for a servo motor driver to get to power it. And I am lost. I don't know what to get to power it, and I don't want to overspend.

I really don't need all that power, so if I want to run it at 1/2 to 3/4 hp, and buy a lower voltage/amperage driver, can I? I know it will limit RPM, but I can deal with that with pulley size setup. I'm doing light duty small diameter mills anyway.

Ideally, I would like to get a 115 ac line powered all-in-one driver that would allow analog speed control as well as future position/step/direction control.

Perhaps a Axiom DV10 (If I could get one cheap) or one of the A-M-C BE25A20AC devices. Would either of these do what I want?

Thanks in advance for any thing you can share.
I'm thinking I got in over my head. Maybe someone here can help me out?

Michael

[Al_The_Man]

The first thing to establish is what kind of commutation does it have, and if it includes an encoder
I believe the lower torque values are the operating values, the higher ones are the max before demagnetization.
Is it a BLDC or a AC sinusoidal with maybe resolver feedback?
Al.

[draemr]

The Kobold data sheet I have says these are "three phase synchronous". The usual configuration says resolver, but this motor seems to have a different suffix, IE, the "R6", than the usual R4 suffix. From what I can glean, this seems to be an encoder option. I hope. I won't know for sure until I get it later in the week.

Anyway, if it's a resolver, I guess I'm SOL. I was hoping to use it to drive a spindle with speed control.

[Al_The_Man]

If you can establish the pole count, you may be able to fit one of the encoders that Renco are dumping on Ebay right now for $20.00, and make it a BLDC.
Then you could use a AMC drive.
Al.

[draemr]

The manual says this is a 6 pole motor. The "464" means size 4, 6 pole.

[Al_The_Man]

So the Renco encoder or who's-ever if you should fit one, should be a /3 for 3 pole pair.
Al.