RE: [CAD_CAM_EDM_DRO] Inverter Drives

Unless your motor is rated for double the speed that it gets at 60 hz I
would not even suggest going to 120 hz. So, I seriously doubt you need a
drive that will let you go above that. An exploding armature is not a
pretty sight.

Tim
[Denver, CO]
Sherline products at Deep Discount
Mach1 & DeskCNC with credit card ordering
www.KTMarketing.com/Sherline
Now selling Visual Mill 4.0

> -----Original Message-----
>
>
> I'm looking at purchasing an Inverter drive for my milling
> machine. The machine has a 3phase 3hp motor with a variable
> speed head. The spindle speeds range from 80-4200 rpm.
>
> I'm currently looking at two Teco drives - the FM50 and
> FM100. The basic difference seems to be that the FM50 only
> goes up to 120hz, whereas the FM100 goes to 400hz. Will I
> ever need/want to run the motor at >120hz? Also, ultimately I
> want to control the rpm with Mach1/2 or EMC. Are there any
> potential problems with either drive for doing this? Has
> anyone else used either of these particular drives?
>
> Thanks,
>
> --C.S.
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html