On 2010-06-27, RogerN wrote:

"Ignoramus11285" wrote in message
...
I was able to run the Y axis motor with a 30A8 servo drive today. Used
a 30v power supply as power source and another power supply as a
command source. I used a reversing switch for Legos as a control. It
worked pretty well! Next thing I will do is switch to tachometer mode
instead of voltage mode.

i

Do your motors have tachometers on them?

Yep.

I still have not decided if I should use voltage mode or tachometer
mode.

Tachometer mode seems to be more accurate, but with potential for
trouble if tachometer stops working.

i

It's good for you to know how to run the drives like this, if there is a
problem and an axis doesn't move sometime, you will be able to tell if the
problem is in the drive or somewhere else.

RogerN