Re: SLO-SYN Motors

The 48 volt or even an 80 volt power supply only indicates the voltage that
the power supply will produce with no load. What this does is make the rise
time of the current very fast and when the current reaches the set amount
the chopper drive cuts power until the current falls below another point at
which time power is again turned on. This happens at around 20 kHz.
The 2 volt 12 amp spec just tells you that if you apply 2 volts to the
winding, if your supply is capable of holding 2 volts you will pull 12 amps.
Darrell

----- Original Message -----
From: Charles Hopkins <chopkins@...>
To: <CAD_CAM_EDM_DRO@onelist.com>; 'Steve Carlisle' <quatsein@...>
Sent: Thursday, January 27, 2000 5:10 PM
Subject: RE: [CAD_CAM_EDM_DRO] SLO-SYN Motors


> From: Charles Hopkins <chopkins@...>
>
> Where can I get supplies to work with my 20 amp motors?
>
> How much power saving do you think I can have by changing power supplies?
>
> I am confused on how to pick a power supply. The motors are rated at less
than 2 volts, but are 12.7 amp and the larger ones are rated at 20 amps. I
think the Ah-ha supplies are 48 volt. Can I send 48 volt to a motor rated at
2 volts?
>
> I have done a search for power supplies, but I don't understand just what
I should be looking for.
>
> Can some one please explain what I should be looking for?
>
> Charlie Hopkins
>
> ----------
> From: Steve Carlisle
> Sent: Tuesday, January 25, 2000 5:11 PM
> To: CAD_CAM_EDM_DRO@onelist.com
> Subject: Re: [CAD_CAM_EDM_DRO] SLO-SYN Motors
>
> From: "Steve Carlisle" <quatsein@...>
>
> My thoughts on the parts that have been weathered.
> I imagine the power supplies would require slow
> drying to use them, if one wanted too. I would think
> that you may be able to pick-up surplus switching
> power supplies, cheaper and less power consumption
> Maybe some of the other fellows have a few ideas on
> that matter. The micro-stepping drives add smothness
> and finer positioning, but they do not position as reliably
> as full step drivers, because stepping between the true
> cogs of the motor. Thier torgue drops of at high speeds
> also and they require a higher step rate from the processor,
> so you need a faster computer. There are numerous companys
> that sell stepper and servo systems, and they usually have
> good comparison tables on that matter.
>
> Steve
>
> ----------
> From: Charles Hopkins <chopkins@...>
> To: 'CAD_CAM_EDM_DRO@onelist.com'
> Subject: [CAD_CAM_EDM_DRO] SLO-SYN Motors
> Date: Tuesday, January 25, 2000 12:17 PM
>
> From: Charles Hopkins <chopkins@...>
>
> Sorry it took me so long to get any information on the power supplies for
> my motors.
> I had to dig the control box out of a snow bank. Yes it was full of snow.
> It is not too weathered looking inside, but has been outside for a few
> months.
>
> Any way this is what I have. It would be nice if I could salvage any of
> this stuff. I plan to run this thing with the EMC control software.
>
> It looks like I have what may have been a boss control?
>
> The X and Y axis have 1100 oz.in. motors by SLO-SYN (type M113F J40C2)
> which are driven by SLO-SYN Motor Drives # A-201571-20. The motor driver
> has a very large power supply mounted to a large heat sink. This is
marked
> by the identification plate to be for type M113 motors.
>
> The Z axis and 4th , which was used on a rotary table, have 840 oz.in.
> motors by SLO-SYN (type M112-FJ25C2) which are driven by Motor Drives #
> A-201571-19. The power supplies look about the same as the others except
> for the numbers and they are for SLO-SYN motors type M112.
>
> All motors appear to be in good condition and are mounted to the lead
> screws at a 1 to 1 drive ratio. The motors are 200 steps per rev which
> will give me a step per .001". I Would like to end up using micro
stepping
> drivers, but it would be nice if I could save the power supply portions of
> what I have.
>
> I think I have all the parts I have in one place now, so I should be able
> to answer any questions.
>
> I have a nice pile of parts, but don't know where to go from here.
>
> Any one want to tell me where to go!
>
> Charles
>
>
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> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
discussion of shop built systems in the above catagories.
> To Unsubscribe, read archives, change to or from digest.
> Go to: http://www.onelist.com/isregistered.cgi
> Log on, and you will go to Member Center, and you can make changes there.
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