Re: [CAD_CAM_EDM_DRO] EMC: Spindle drive options ?

Hi Andrew

There are some digital outputs for spindle speed speed increase and decrease
along with two for direction. Run EMC with Tkemc and using IO_Show, monitor
the IO pins on the second parallel port to get some idea of what is happening
- You'll need to use Bridgeportio to control the extra IO.
When you execute an M03/M04, make sure you also specify an S otherwise the
spindle won't turn on.

If you were hoping for an analog output to interface directly to a VFD, that
is still some way off.

Regards, Paul.

On Thursday 20 December 2001 9:42 pm, awemawson wrote:
> Hi,
>
> I'm now committed to converting my Denford TRIAC mill to EMC - I'll
> be using the exisiting steppers via Gecko 210's but what are my
> options for spindle speed control?
>
> The spindle motor is three phase 240 /440v (ie star or delta) 0.37KW
> which on the original machine was driven by a VFD (1985 vintage) that
> has been 'hacked' to interface it. I expect that I'll have to
> buy a new VFD but what are the options for speed control & direction
> with EMC? Any pitfalls to avoid ? Anyone got a suitable VFD ?
>
> Any help much appreciated
>
> Andrew Mawson