There is not currently a carousel motor controller on the machine?


On Fri, Jul 26, 2024 at 6:07 AM andrew beck <andrewbeck0...@gmail.com>
wrote:

> hey guys just have a question about the carousel component
>
> I have a 80 tool carousel on my mazak horizontal 5axis
>
> and i need to control it.
>
> i know the carousel component can be used with a stepper motor and it just
> needs one home switch and then calculates step and direction signals for
> any movement from there
>
> I have a couple of options here to make this work
> i could pull the current motor out which is a yaskawa inverter rated motor
> with a 5v differential encoder on the end(ready to plug into a mesa card).
> And then just replace it with a servo motor and use step and direction to
> control it and away we go.  the downside of this is there is a spline on
> the original motor i don't really want to have to touch..  and the cost of
> a servo and driver  approx 350usd
>
> the 2nd option is a expensive vfd that has 0 +-10v i am hoping that i can
> control that as a servo and the carousel component tells it what to rotate
> to for each tool.  cost 300usd
>
> the 3rd option and the one i am hoping i can use is i buy a cheap vfd that
> has a encoder card for closed loop control (approx80usd)  and just plug it
> into motor and wire encoder in to vfd and then back to mesa card.  the
> problem is the cheap vfds only have 0-10v not +-10v
>
> so i would have to have a direction pin plus 0-10v.  Andy would that be
> able to work ok?  it means that i can't run a PID in linuxcnc on it i
> think.  but it might work ok still.  I know that i can get full servo-like
> control down to about 10rpm still and it works great.  i use them on my
> other cnc mills for the spindle and they are great and provide pretty good
> spindle orientation definitely good enough to do toolchanges with no issue
> in about 10000 toolchanges so far.
>
> anyway let me know what you guys think
>
> just looking at options currently though want to chose some sort of option
> in the next week as we need this cnc mill going.
>
> i have jobs for it to do soon:)
>
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