Re: [CAD_CAM_EDM_DRO] Re: Monarch conversion to VFD

In a message dated 1/6/2002 5:21:45 PM Mountain Standard Time,
implmex@... writes:

> The solid state DC controller that you mention is the route the machinery
> dealership has been struggling with for the last 4 months.
>

One of the critical aspects of hooking up a DC motor to a DC drive is the
polarity of the field windings, sometimes there is one that is in series of
with the armature, reverse it and all hell brakes loose when you power it up.
Thas trapped a lot of electricians when they did not understand this.
bill


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