Advice needed for controller box layout

[Bustercnc]

Hi,

Any advice would be greatly appreciated. I have just purchased a little cnc router for PCB work.

I have been trying different layout options while I wait for cables and connectors to turn up

There are three options that I can see and wondered if there are any issues with these, like electrical interference, heat concerns/ventilation or anything I may have missed.

Options 1 and 3 involved mounting the BOB onto acrylic and attaching this to the door panel.

The external case dimensions are 400mm x 300mm x 150mm but the removable steal base panel is 350 x 250 which is what I want to keep all the electrics on for ease of removal. All the connetors wil be mounted on the access panel on the side

Option 1 - and preferred option for me





Option 2





Option 3

[cncJim]

My preference would be to have all parts in the case and not mounted to the door - Is there enough room to mount the powers supply on its side? Might give more room/options?

http://literature.rockwellautomation...m001_-en-p.pdf
This document makes an interesting read if you want to focus on handling electrical noise in a system (thanks EddyCurrent!)

Jim

[Bustercnc]

Hi Jim,

Thanks for the quick reply.

I did look at mounting the power supply veritally but the lock on the door hits the top of the PSU on one side and on the other there is a bar which sticks proud of the door panel visible in the second picture next to the gounding wire, which also hits the top of the PSU meaning I have to move the PSU more to the centre of the case.
Besides, being lazy I wanted it flat so I can easily access the screw terinals

Cheers
Dave

[Bustercnc]

Thanks Jim,

I just remeasured and the lip on the door clears the PSU by 1mm.

Looks like your suggestion is the better one and it does give me a lot more space. I origanlly wanted to keep the PSU flat for ease of access to the screw terminal but I can live with it this way, how many times should I need to access these anyway, famous last words.




Cheers
Dave.

[Clive S]

Have you thought about safety relay, estop, fuses etc

[Bustercnc]

Have you thought about safety relay, estop, fuses etc

I bought a EMI Panel Mount IEC Filter 10A from cnc4you to plug the power lead into thinking it was fused, just checked and its not.

I have a red panic button and proximity sensors for the estops.

Not sure what you mean by safety relay

[Bustercnc]

Have you thought about safety relay, estop, fuses etc

Safety relay, I get it now. I hadn't thought that deepely about it, I assumed the estop and circuit breaker would be good enough.