Re: [CAD_CAM_EDM_DRO] Re: Safety -- servo vs. stepper

Torsten wrote:

>I have been contemplating about this for some time.
>No solution I am fully satisfied with yet.
>I am thinking about possibly running the Servos
>dc powerline through the limit switches.
>Anybody with any input about this?
>
>When my encoder gets unpluged or malfunctions the
>servos take off at full speed and there is nothing
>the software would be able to do about it.
>
>I plan on using seperate Home switches so during
>normal operation no limit switch should ever be
>triggered.
>
>Is this a reasonable aproach on a feedbackless system?
>
>
>

Well, it is probably all you can do, but having encoder feedback to
the computer has a number of advantages. Not only can you monitor
for at least some sorts of runaways, but you can monitor the
actual servo performance, too. And, you can also switch back and
forth between manual and CNC, which some people like.

Jon