Re: [CAD_CAM_EDM_DRO] motor types

> Stupid guy question coming... How many wires
> *typically* come from the motor itself on a servo?
> (so I can try and figure out what I'm looking at when I get it)

Not stupid at all, you've also reach the end of my knowledge as encoders go
as I don't have any myself to look over. Well I do but they're from model
planes. I saw on a web page that a guy only took one lead from a model
plane's servo to get the feedback. Since the servos and encoders are
seperate on the motors we're talking about the encoders will need cables for
supply power as well. Reverse engineer the sucker, find out how many cables
are used to power the motor itself. I would expect there to be a few more
'extras' for the encoders. The encoder should be quite easy to spot because
it's likely it can be removed to replace it. You could try spinning the
motor up to a few hundred or thousand rpm then attaching your multimeter to
suspect cables. I _THINK_ you won't get any back from the encoder's cables
because you're not supply it with power, the encoder simply measures it does
not generate current. The supply to the motor should show up on the
multimeter with the rotor spinning though. Just an idea.

John

> Yep, he sells and services copiers, printers, and fax machines.
> Been doing it for 30+ years.
> He found this one (and the others) in his parts bins.
> The steppers he got me (85 oz/in) come out of HP LaserJet II's and III's.
> The previously mentioned 5 wire DC gearmotor was out of an unknown copier,
> used to drive the gear train and squirrel cage fan.
> This possible servo, he has no idea where it came from.
> He just called me and read the stuff to me and described it.
>
> My intention is that if he finds stuff for me that I can use,
> to find out where it came from and let everyone know
> where to get them. (i.e. - what machines they came out of and such)
> Hopefully, this will save people money.
> (like knowing the steppers come out of the HP's)
>
> I saw them advertised for $40 each, and he says if someone's
> got them in their shop they would probably sell one to ya for about $10.
>
> Thanks for your help,
>
> Weyland
>
>
>
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