Re: [CAD_CAM_EDM_DRO] Re: Treadmill motors as Servos

Hi Bill,

What do you want to use the motor for? If it is for a spindle then you
need a DC motor controller. I didn't notice any on the Surpus center
site. DC motor controllers can vary from a simple rectified drill speed
controller to a sophisticated torque compensated drive. It depends on
how accurately you need to maintain the speed.

The specs show CW rotation, meaning that if you apply +ve to the red
wire the motor will spin CW. If you reverse the connection it will spin
CCW. Usually the fan is built into the pulley. It doesn't look like
Surplus center supply the pulley so if you want full power you will have
to rig up something yourself.

Les

William Perun Sr wrote:

> Les Newell, John, and Rich
>
> I've been trying to learn how to select a dc motor, run it, and
> control its speed for some time now. The more I search and read the
> more confused I become. Your discussion on this subject has been
> interesting to me. I was hoping that you could tell me, for the
> Surplus Center ARGORD CORP permanent magnet motor (item # 10-1783)
> the following.
>
> What do I purchase from Surplus Center to convert 110 volts AC home
> service to the dc voltage and current that this motor needs?
>
> Then what do I purchase from Surplus Center to vary the speed of the
> motor over its capable speed range?
>
> I just want to purchase the motor, converter, and controller to put
> together the system just to gain the confidence that I can actually
> do it.
>
> Also how do I wire the converter, and controller to the motor?
>
> I see that the Surplus Center spec states that the motor is
> reverseable, but the pictures that were posted showing the motor
> label shows that the motor (model PA140B) is CW rotation. The label
> says external fan, does that mean that a fan must be mounted somehow
> to cool the motor?
>
> Which Surplus Center fan is meant for the motor?
>
> Thanks for your help, and God bless you all.
>
> Bill Perun
>
>
> ---