Re: [CAD_CAM_EDM_DRO] Re: G201 modifications/update

ballendo@... wrote:

> Ballendo,
>
> The G201 is a STEPPER drive. No fault indicator. No "braking"
> necessary. Duh. Sorry list.

This is not necessarily true. Stepper motors can take advantage of
braking. If you have a large machine, with a lot of moving mass, it can

continue traveling quite a distance if the drive is simply shut off,
without
a dynamic braking mode. It won't make much difference on a Sherline.
Stepper motors can be easily braked in a controlled manner by connecting

a braking resistor where the DC power supply normally feeds the
full-bridge
switches (for a bipolar drive). The regenerated voltage from the motor
will be rectified by the freewheeling diodes and fed to the braking
resistor.

Jon