Re: Please help!!! I have run away servos on X and Y

Jim,
I'm not sure if any of this applies in your case but the only time
I've had this happend is when the servos don't "see" the tack (an amp
run away) or the controller doesn't "see" the encoder". If it was
only a single axis I might be able to believe and output transistor
failure. Can you disconnect the controller to eliminate the
possibility of an encoder problem?

Roger

--- In CAD_CAM_EDM_DRO@y..., "Jim Montgomery" <jimbomont@y...> wrote:
> Please Help,
>
> I'm able to jog and adjust feed rate on the "Z" axis.
> The machine is a Southbend Mill, 9" x 42" (Bridgeport Style).
> The control is an older Anilam Crusader II , circa 1983 I'm
guessing.
> The motors are SEM, 100v, 30a "X" & "Y" and 20a on "Z".
> The servo amps are Westamp 30060-75
> The linear encoders read find as a DRO at the control.
> The tachs output good voltage.
> When I switch the amps from axis to axis I get the same results so,
I
> assume they are OK.
> Limits check out OK.
>
> I've built a few stepper systems but, I'm just learning servo
systems.
> I'd really like the tech specs on the servo amps so I could trash
the
> Anilam controller and upgrade to PC control. The "Servos To Go"
board
> looks good to use with the Linux/EMC project along with other
options
> like using products from "http://www.rutex.com".
>
> Any help on why I might get run aways or any info on what my servo
> amps may like as far as voltage inputs and what pins would be great.
>
> Thanks,
>
> Jim Montgomery