Re: Re: Old CNC controls

>
> From: ptengin@...
>
> In a message dated 02/23/2000 7:49:58 AM Hawaiian Standard Time,
> dfs@... writes:
>
> << What is the usual speed variation that can be acheived with one of
> these controls? >>
>
> Marc,
> On my cnc hardinge, I can program from 50 to 3400 RPM. RPM variation
> appears to be under +- 5 RPM at no load all across the range. Under load, I
> can see it dip 15 to 30 RPM worst case. This with a generic 3 HP 3 ph motor
> and a yaskawa 5 HP VFD. It is controlled by a Fagor cnc with a direction,
> run, stop and 0-10 v speed connections. Power is 220 volt @ 20 amps.
>
> Peter
> THRD, Inc.

What speed is the motor rated at for 220V & 60 Hz?

~1,700, ~3,400 something else?

I presume this is a standard 3 phase motor?

Marc