Re: [CAD_CAM_EDM_DRO] Stupid Newbie Tricks

If their from an old Kennedy drive you should have saved the driver
boards also, it would make a start for a analog control system. AFIK
they used a pulse width mod control.
Bill Higdon (It's only been about 10 years since I had my head in one)
Jon Elson wrote:

>
> WDSmith wrote:
>
>
>>OK, I know you guys have nothing better to do than answer stupid questions so here goes.... I have searched the files (and the rest of the internet) in quest of some info on the old Amtek/Lamb Electric 50 volt DC motors used in the old tape drives. I have a couple of them and hate to let them languish when I have plenty of places to use them.... But, I need to have some idea of what they will do and what kind of power they need to do it.
>>
>>Can anybody help? I recall they were mentioned several months ago but can't find anything now.
>>Label numbers available on request. Reply off-list to mediasmith@... if you want to minimize list clutter.
>>
>>
>
> No, this is actually ON topic for a change. These motors are probably
> quite good for most purposes.
> They had a little higher armature resistance than I thought was a good
> idea for commercial use on
> a Bridgeport Series-I size machine, but will almost certainly work fine
> in hobby use even on that
> size of machine. These motors were wound for low RPM, high torque use,
> which is a bit rare
> in servo motors, but ideal for CNC'ing milling machines and lathes.
>
> I think some people have used these with Gecko servo drives with good
> results. You could also use them
> with Westamp, Servo Dynamics or Copley Controls servo amps, and an
> analog-out servo interface
> board like the Servo-to-Go or my PPMC board set.
>
> What sort of machine are you planning to use them on?