Wobblycogs CNC Mk2

[Wobblycogs]

Cheers Eddy. Once the case is finished it will be dust tight (I think your case is the same design). I figure anyone inside the case should have a pretty damn good idea of what they are doing or they shouldn't be in there! The cover over the power supply is stop stupid accidents, it wouldn't stop a concerted effort to electrocute yourself.

I don't remember seeing any spec's for space around the rectifier although I'm guessing there will have been some. There's a good bit of space around it though and the aluminium it's bolted too will act as a great heat sink. I'll keep an eye on it but I don't envisage a problem. I don't like the way the bleed resistors are connected at the moment, it feels like a bodge although it works fine. I was asking about the power supply over on another forum and someone pointed me in the direction of active rectifiers, apparently they dissipate almost no power - I bet they cost a fortune though.

Something else I meant to ask, how are you connecting the various bits inside your cabinet to the various bits on the outside e.g. steppers, e-stop / limits etc. I'd like to be able to just unplug everything and take the case away but I'm concerned plugs and sockets will introduce noise.

[EddyCurrent]

I figure anyone inside the case should have a pretty damn good idea of what they are doing or they shouldn't be in there!

You can't use that as an excuse though.

I don't remember seeing any spec's for space around the rectifier although I'm guessing there will have been some.

I meant the VFD, sorry I never usually call them VFD's

Something else I meant to ask, how are you connecting the various bits inside your cabinet to the various bits on the outside e.g. steppers, e-stop / limits etc. I'd like to be able to just unplug everything and take the case away but I'm concerned plugs and sockets will introduce noise.

I'm going straight into terminals via compression glands in the bottom gland-plate, I can't see me wanting to move it much but I'm prepared to disconnect if I do. From my experience, albeit on much larger VFD's, the plugs & sockets did not like the high frequencies coupled with the current, although they were sized for the job the insulation used to break down over time.