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