Re: [CAD_CAM_EDM_DRO] Varispeed Motor Control

You could use a variable frequency drive to control the motor speed
electronically. Most freq drives use a 0-10 volt signal to set speed,
but also have at least a few digital inputs for preset speeds. A source
for surplus freq drives is www.dealerselectric.com

Terry

Smoke wrote:

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> The machine must be set to highor low gear and then turned on. The speed is then changed using a handwheel. I suspect I'd have to put some sort of stepper motor attachment in place of the hand wheel....leaving the hand wheel on also to allow for manual use of the machine too.
>