Re: [CAD_CAM_EDM_DRO] Re: AC servos

Graham Stabler wrote:

>
> Hi Jon, I've found some Yaskawa ServoPack SGDH-04AE drives on ebay,
> item number: 170126303284
>
> Price looks good ($201 or best offer) so I'm asking for a price for a
> pair with shipping to the UK.
>
> It looks like they can run in three pulsed modes, one is step and
> direction, the other CW/CCW and the other the 2-phase quadrature mode
> (which can also have a pulse multiplier applied to it).
>
> So all looks good, hook up seems fairly straight forward, I have one
> set of motor/encoder leads already and the details on the other cables
> are available on the website along with the required connectors.
>
> Its also great not to have to build a PSU for a change as we have 230v
> out of the plug.
>
> Something else I wanted to check; one of my motors is 100W and the
> other is 200W, will these be big enough for a router doing typical
> duties in wood and ali?

I don't know that much about routers, but I think it will be
plenty for a modest router with a commercial hand-tool router
motor as the spindle. These brushless motors have much better
heat removal, and therefore can do much more work for their size
than a brush motor.
At the moment the larger motor is on the

> smaller stage as this was origionally a vertical axis but I think it
> would make more sense to swap them. Both actuators have 5mm lead
> screws,the smaller motor has a 5:1 planetary on the output and the
> larger motor is directly coupled.

The planetary reduction may slow your maximum speed, but maybe
not, as those motors can usually spin pretty fast.

Jon