RE: [CAD_CAM_EDM_DRO] Re: Why do stepper motors lose their magnetism when disassembled? and a dc treadmill motor ?

Dan
It may be a tach pulse. If so you can spin it by hand an read voltage
pulses across the wires.
Jim

www.soundlogicus.com
Plasma THC-300
Serial Spindle Speed control


-----Original Message-----
From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of danmauch
Sent: Saturday, December 27, 2008 9:00 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: Why do stepper motors lose their magnetism
when disassembled? and a dc treadmill motor ?

In tread mill motors what are the two blue wires for? I think they
are either for a magnetic pichup for rpm or a temperature sensor but
am not sure. Anyone know what they are? I hate to take the motor
apart just to see.
Dan


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "David G. LeVine"
<dlevine144@...> wrote:

>
> Leslie Newell wrote:
> > I have never had any problems taking DC motors apart. I admit I

haven't

> > taken my treadmill motors apart but I can't see why they should

be any

> > different. I suppose if you left them apart for a very long time

the

> > magnets may lose some strength but I can't see much happening in

a week

> > or so.
>
>

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