Re: [CAD_CAM_EDM_DRO] Re: Question for Kim Lux

On Monday 05 January 2004 16:02, Kim Lux wrote:

> I'd like to "over voltage" the motors so that they can run at a higher
> speed. These motors have significant armature resistance and with a 40V
> power supply we run out of supply voltage long before we are anywhere
> near the peak current of the motors.

wrong solution, infact you still haven't stated exactly what 'problem' you
are trying to address

if at max rated voltage the motors are not providing the speed you need out
of your machine and are pulling well below max rated current, then the answer
is to lower the gearing. Over-volting your motors won't 'solve' anyhting.

If you are already achieving the speeds you need, but feel that the max
current capabilities of your motors are never being used, then you have
simply over-specced your motors.

When correctly geared and appropriatly loaded, you will find that you can
pull maximum rated current at or below the rated voltage, trying to correct
you miscalculation of gearing by running the motors out of spec will not
benefit anyone, except perhaps the motor salesmen. Remember, two wrongs do
not make a right.

--
Redpoint Consulting Limited

Real Solutions for a Virtual World
http://www.redpoint.org.uk