Re: [CAD_CAM_EDM_DRO] Cooling Rutex drives

Cool, thanks for the picture. That's pretty much what I was thinking of
doing, but with a heatsink attached to the bracket and a fan for cooling.
The enclosure I'm using is fairly small so it will need some airflow.

C|

On Sun, 18 May 2003, Peter wrote:

> Hi Chris,
>
> The Rutex drives seem to run a bit cooler than a Gecko for the same
> power inputs. This is partly because the Rutex drives need a 17-30 V
> supply to produce the internal 5V rail whereas the Gecko has to drop
> from a higher voltage down to 5V for the internal logic and there is a
> bit more constant dissipation. Overall, the servo drives seem to run a
> lot cooler than stepper drives, too. For my R990H's I have them bolted
> to a 1/4" aluminum bracket which is in turn bolted to the 3mm thick
> aluminum front panel of a 3U rack mount cabinet without any fan or
> additional heatsinking and the front panel only gets very slightly warm
> to the touch even after several hours of driving my Nema42 servos hard
> at 65V and peak 20A from a 1500VA toroidal Transformer. I've just
> posted a pic in the "files" folder "BP Clone CNC Retro" on CCED showing
> how I mounted the Rutex's. You're looking at the drives and the bracket
> which is bolted to the 3mm aluminum front panel.
>
> If you're planning to run the drives hard you will need some additional
> heatsinking over and above the aluminum bracket. I personally feel a
> fan is just one more think to break and prefer passive heatsinking - but
> I know others have excellent results with fans.
>
> Cheers, Peter
>
>
>
> Chris Baugher wrote:
>
> >Hi,
> >Anyone here that is using Rutex servo drives, can you give a rough idea of
> >how much cooling is needed? The instructions say to use a "large"
> >
>
>
>
>
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