On 9/20/2011 11:34 AM, Andrew wrote:
> It looks like lack of capacity at
> higher speed.
>    

You may be simply running out of servo power.

Servos oftentimes have some reserve power that you can use for a short 
period of time, but that is limited.

If your drive power supply is undersized, that will also limit max servo 
power.

I don't know what kind of overload your drive is indicating but 
sometimes you can adjust the current limits on servo drives
and get more peak power out of them.     The default settings are 
oftentimes quite conservative.

Dave

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