Re: [CAD_CAM_EDM_DRO] Bullet-Proof G201 / G210

Mariss -

The only thing I would add would be the ability to set the motor current by
providing an external reference voltage - say, a 0-5V signal equating to
min through max current settings - rather than having to fit a resistor.
This would allow for setting the current from software (via a DAC or a PWM
output, for example), which I would need in some of the applications I have
in mind.

Regards,
Tony

At 22:34 08/02/2003 +0000, you wrote:

>Hi,
>
>I am soliciting input from the group.
>
>Some ideas came together today that seem very exciting to me. Let me
>explain:
>
>The G210 that many of you are using is a 2-PCB drive, there is the
>G201 plus the G901 multiplier board. It occured to me as I was
>working on the short-circuit protected (IP) version to completely
>split the drive into a 2-board version.
>
>Board (1) would be the power section with the motor driving MOSFETs
>and a complete short-circuit, miss-wiring, load dump, over-
>temperature and over-voltage protection circuitry on it.
>
>Board (2) would combine the microstep logic and the pulse multiplier
>logic. There would no longer be a differentiation between a G201 and
>a G210.
>
>The new drive would keep the same form factor and connector pinout.
>You could drop it into the same location and it would work just like
>the G201s / G210s did before transparently. Once the application was
>sorted out, you could use the cheaper 201s / 210s in the future, they
>will not be discontinued.
>
>The features will be:
>
>(1) A huge advantage will be it will be very difficult to destroy.
>Should you still find a way to kill it, the logic board would survive
>and all you would replace (at half the cost of a new drive) would be
>the power section.
>
>(2) The power section would emulate an L298 and would replace the
>proposed G298 on our website for those that want to "roll their own".
>
>(3) All adjustments like the "Adjust" trimpot and the G210 option
>header would be settable without removing the cover and would be
>located on the top face of the drive for convenience.
>
>At this point I'm looking for things, features and aggrevations
>people would like to change or add. This is a "clean sheet" redesign
>so now is the time for it.
>
>Thank you in advance for your suggestions.
>
>Mariss
>
>
>
>
>
>
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Regards,
Tony