Re: [CAD_CAM_EDM_DRO] Which is best?

In a message dated 19-Dec-00 06:51:49 Central Standard Time,
nuspel@... writes:

> Motor 1:
> Astrosyn 23LM-K005-P3
> 8 Wire
> 7.0V ?A
>
>
> Motor 2:
> Japan Servo KP6M2-020
> 6 Wire
> 1.7V 3.4A
>
>

Greg: As I have never seen either motor, nor do I have "spec sheets" on
either, I can only make a [nearly-]educated-guess for you: The Japan Servo
(brand) of motor is made for use with a "unipolar" driver. However, the low
1.7 volts/3.4 amps says the windings are very low-resistance, so, you might
do nicely using that one as a "bipolar" motor by NOT using the center-taps
(insulate the ends!), and connect only the ENDS of each winding, so that you
have, in effect, a "4-lead motor". It might be just fine for you.

The other one can be wired either with pairs of windings in parallel (lower
voltage and inductance, higher current; best choice for this application),
or, in series (much higher voltage, lower current, probably not good choice
for this application). But I have no way to guess if this might do. It
might be just fine, even excellent for you.

Just be sure your connections are very good! I.e., soldered properly, OR
"gas-tight crimps". A bad solder-joint, or a crummy "screw terminal
connection" (such as with two strands of 7 under the screw-head, and the
other-5 crumpled and/or busted off, etc!) is often worse than having the
wrong kind of motor and/or drive for the application, when, were connections
properly made, all would work well!

Jan Rowland, Old Troll


[Non-text portions of this message have been removed]