Re: [CAD_CAM_EDM_DRO] motor runaway

Thanks Jon, that is the direction I am looking too.

Thomas

----- Original Message -----
From: "Jon Elson" <elson@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, August 01, 2004 8:06 PM
Subject: Re: [CAD_CAM_EDM_DRO] motor runaway


> Thomas Powell wrote:
>
> > I have my control box almost finished. I hooked up the servos on the
bench
> >(actually the kitchen table but we will not go there) and I can not get Z
to
> >work properly. It wants to spin at a high rate as soon as the Gecko is
up
> >and running. If I try and jog the motor it just jumps (in the correct
> >direction) and faults the Gecko. I am sure of my wiring. I am using
> >amphenol connectors and swapped the Z and Y axis connections. The
problem
> >followed the Z motor. I rechecked the encoder hook up on the Z and it is
> >correct and just like the other motors.
> >
> >
> The encoder is not providing signals to the motor. If it keeps going
> more than a rev or two, it must not be getting ANY counts from the
> encoder, or it would
> fault out. So, I think something is wrong with the encoder, the power
> to the encoder,
> or the signals coming from the encoder.
>
> The fault when you jog is because the commanded position has moved more
than
> 128 counts from the original position when the Gecko was reset.
>
> Jon
>
>
>
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