Re: [CAD_CAM_EDM_DRO] Re: Monarch conversion to VFD

In a message dated 1/6/2002 11:58:52 AM Mountain Standard Time,
paul@... writes:

>
> An alternative to a VFD is a solid state DC control, if the DC motor
> is in good condition. This isn't all that hard to do, but you need
> 2 controllers: one for the armature and the other to do field weakening
> to get to the top speed, plus a safety cutout in case the field supply
> frazzes out.
>

Check out a company named FINCOR, they are big in the printing press field,
and they use a lot of DC motors there, with complete control of the motors
from stop, slow creep, high speed with field weakening, all in one package.
bill


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