Re: [CAD_CAM_EDM_DRO] Servo Motor Hookup with Gecko's

Bill Vance wrote:

>On Sat Nov 16 23:51:14 2002, William Scalione, <wscalione@...> wrote:
>
>[snip]
>
>
>
>>Gecko stepper drivers do not take encoder feedback, and only one or two
>>controller programs will support encoders if you have an encoder card in
>>your computer to hook them to. Dan Mauch was selling one but he just
>>mentioned he was out and would probably not have any more made, so you would
>>have to build your own. If you use Gecko's there really is not that much
>>difference in the setup between steppers and servos. With a stepper you need
>>to connect 4 wires from the drive to the motor, and set the current limit
>>with a resistor. On a servo system you need 2 wires for the motor and 4
>>wires for the encoder. The hookup to the computer is about the same for
>>both. Go with the servos, they have much better performance, feedback loop
>>to detect problems so no lost steps to worry about and costs are about the
>>same if not cheaper. On a Bridgeport size machine, stepper motors are quite
>>expensive.
>>
>>Bill
>>
>>
>
>If there's no more encoder cards, what do you hook the encoders up to? Some
>other brand of card, or something else?
>
>

You can use my universal stepper controller. See
http://pico-systems.com/univstep.html for more
details. This produces very smooth trains of step pulses, up to 300,000
steps/second (in case
you have very high resolution encoders). It can either count its own
step pulses or use an encoder.

Jon