Chris Radek wrote:
>
> The Z on my mill is counterweighted and heavy.  I was getting a
> serious thud that would make the machine and floor bounce.  Now it
> smoothly sails past the index like you say.  I don't feel or hear any
> disturbance.
>   
It made the *****FLOOR***** bounce?!?  Yikes!  The very early servo amps
on my Bridgeport have very wimpy transistors, and so I have the fault 
trip set pretty
low.  I would occasionally get a fault on one of the servos due to that 
disconituity,
and also always got a "ping" out of my Z servo which has a very lively 
ironless-rotor
servo motor.
> Thanks to Jon and Frank for testing it on different machines so
> fast.
>   
Not just different machines, but most especially different servo 
interface hardware.
I have tested on my PPMC (analog servo interface), but not yet on the UPC.
> Are either of you using FF2?  I'm not, but it would be nice if that
> was tested too.
>   
I've been using FF2 since 1999.  Did you change something in FF2?
If so, I will have to do more detailed testing with halscope.  I can say
I didn't notice any disturbances or serious problems, but I didn't do much
more than slow jogs and home operations.

Jon

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