Re: Re-purposing surplus servo and spindle motors is it possible?
Originally Posted by
sumonetoo
Over the years I have junked several cnc machines due to lack of room , too big ,too heavy , whatever the reason. I have saved parts such as servo motors , spindle motors, etc.
Spindle Motor!
How about a 8000 rpm (max) fanuc 200V spindle motor do I need a lot of "smarts" to make that turn ? What IF I just connect 3 phase 200V (after transformer) to it will it run full speed or blow up ?
I can answer this one, having done it. I ran my lathe spindle with the same motor and a VFD for a few years until I upgraded to a servo motor. I just bought a sensorless vector capable VFD of proper HP(kW) rating. Set the parameters and pressed go. Never had a problem. That motor is just a special wound induction motor, so is perfectly happy running on a VFD, speed control was very good even with no feedback.
I used an Automation Direct GS3 VFD at the time, but there are a lot of equivalent or better drives available today.
Jim Dawson
Sandy, Oregon, USA