Re: Step/direction servo amps

Hi David,
Thats a very nice drive but it isn't enough of an upgrade to justify
the cost. My machine, a Tree, is significantly bigger than a
Bridgeport series II. The original drives, now deceased, could do a
continuous 22 amps at 100 volts and surge to 45 amps. They were rated
at 2.7 hp.

The Granite's additional voltage, 30 more than the Gecko's, would be
welcome but without the amperage it won't do much good. My biggest
problem is accileration, not speed.

Thanks,
Roger

> http://www.granitedevices.fi has the best value in servo drives BY
> FAR. They are 100% digital and can be tuned right from your PC.
> There is no guessing involved when it comes to how much
> overshoot/following error your machine will have. However, these
> drives are rated at 15A peak, which is a little below what you want.
> However, I think 20A for a servo drive is very high. If you need more
> speed, it's the voltage you should worry about. How big a machine are
> you talking about where you would need such high power/current levels?