Re: Stepper Motor Driver Help Needed

Matt,
If you still have the Bridgeport power supply, get Microkinetic's 8010
drivers and use the Bridgeport power. The 8010 will handle up to 80 volts
and 10 amps. I think they are about $350.00 each.
Darrell

----- Original Message -----
From: Matt Shaver <mshaver@...>
To: <CAD_CAM_EDM_DRO@onelist.com>
Sent: Wednesday, October 13, 1999 12:27 AM
Subject: [CAD_CAM_EDM_DRO] Stepper Motor Driver Help Needed


> From: "Matt Shaver" <mshaver@...>
>
> I'm basically finished with my retrofit of an old Bridgeport BOSS6 using
the
> original stepper motors and a Camtronics 5A 3 axis driver board. My
problem
> is that my top speed is about 12-15 inches per minute. I think the problem
is
> that I don't have a high enough output voltage to accelerate those giant
> motors. It's my fault, Dan Mauch did say that he thought that I would find
> this setup to be underpowered for my application, but I thought I might
> squeeze by since the original supply voltage was 56V and I've got 40V now.
I
> also lowered the value of the current sense resistors on the Camtronics
board
> to allow running at more than 5A. I'm set up at 7A now and I don't have
any
> overheating problems at all, but I don't have the performance I need
either.
> What I've done is apply a 40V/5A solution to an 80V/10A problem. Anyway
> (there is a point to this), I have a couple of questions:
>
> 1. Can anyone recommend a source of high power bipolar stepper motor
drivers
> and the associated power supply, preferably cheap? I don't need
> microstepping, half stepping would be fine and I'd even consider a good
full
> step only solution if the price was right, however it seems that most all
the
> drivers have half step capabilities at a minimum. I've looked at Ahha
> (microstepping & expensive, but really nice) and Microkinetics (gonna call
in
> the morning, I mean like when it gets light outside...) I'd prefer
something
> off the shelf (I know, bend over...) since I'd like to wrap this project
up
> and move on to my next fiasco.
>
> 2. Anyone wanna buy a complete Camtronics 5A 3 axis stepper driver system
> already built with fans, power supply, and a really spiffy mounting
bracket
> (I'll post a picture later)?
>
> Thanks,
>
> Matt (soon to be about $1500 poorer) Shaver
>
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