Re: [CAD_CAM_EDM_DRO] Re: 201 Drivers and 42 Motors

In my opinion,
The amplifier(s)(per winding) would be just as complicated as the higher
voltage drive and would
defeat the purpose of buying the Gecco drive since it would only serve as a
controller.

Lee

At 07:43 AM 9/29/00 -0000, you wrote:

>It must be the sign of a demented mind replying to one own post but
>we now have Mariss interested in building a larger 160v servo drive
>which is probably the best way to go.
>However as someone else posted there are loads of older [read very
>cheap ]machines out there still on type 42 stepper motors in good
>condition just looking for drivers.
>As this list has some very experianced people on it could we have a
>definitive answer as to whether a smaller stepper drive such as the
>201 could run larger motors through an amplifier stage?
>This is one part of my original post quoted below that never got
>addressed.
>
>--- In CAD_CAM_EDM_DRO@egroups.com, John Stevenson <machines@n...>
>wrote:
>> I have been following this thread with interest and have read
>Mariss's and
>> Darrell's input.
>> What I gather Darrell is trying to do is to use the 201 drivers
>with the
>> original Bridgeport power supplies. As the 201 is limited to 80volt
>this
>> creates problems as the origin machine supply is a lot more than
>that. To
>> replace the transformers is quite a costly operation and this is
>what some
>> retro fitters are trying to avoid.
>> I'm not an electronics guy at all but it appears to me that perhaps
>it's
>> possible to use Mariss's 201 driver at say 50v which is well within
>it's
>> capabilities and them put the output through an amplifier stage
>powered by
>> the machines own transformer.
>> It's possibly not as simple as that but it may be a more economical
>way
>> than to either use old original suspect boards or source more
>powerful
>> boards.
>> Any input on this? Mariss, Jon ??
>> --
>>
>> Regards,
>> John Stevenson
>> Nottingham, England
>
>
>
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