First time build - Steel Frame CNC Router

[examorph]

Will look at this properly for you later but see one thing I'd change. Use contactor rather than relay contact for turning on transformer. Still use relay for safety but have turn it on contacter which is better suited to high current.

Also what kind of limit switch are you using.? On quick look if Proximity then think you have them wired wrong. If Prox what type NPN or PNP.?

Thanks Dean, they are NPN proximity switches, I think you recommended these for another user http://www.ebay.co.uk/itm/1417817891...c=1&rmvSB=true
Another thing I noticed I had cocked up on was showing them as "limits" on the diagram, they are actually homes and I was planning on using soft limits within Mach3, will get the drawings updated showing this and the contactor. Thanks

EDIT: Is it also worth running the VFD through the same contactor as the transformer or should I keep that one running through the relay?