Re: [CAD_CAM_EDM_DRO] Rewiring a mill to auto-start on power?

Hi Abby,

You might be able to use the coolant controls, M3,4,5 to pulse a start
relay on and then back off.

Alan KM6VV

AbbyKatt wrote:

> Hi hi All,
>
> I have a bench mill, which uses a combo-start/stop button combo to power
> on/power down the mill. I've got a nice relay system bult which can
> apply power to the mill and this works. As the mill uses a start-wire
> (probably a solonoid?) it will only activate the mill, until I press the
> start button, and then it can be shutdown by turning the relay off (PC
> side). This is a kind of nice safety feature, which prevents the spindle
> starting up when the computer reboots, but it doesn't lend itself well
> to CNC, where I have to manually race to press the button in the dwell
> time of an M3! :)
>
> I was wondering how I'd go about modding it, so that the computer can
> _start_ it too? I'm guessing I don't wire it so that the start-solonoid
> is always powered, do I?
>
> Thanks,
> Abby
>