Material overview, wiring over view, and suggestions please

I have built two plasma machines, the first one because I wanted to do metal working and didn’t have enough money. I realized I could do a much better job, so I sold it and used that money to make a better table. But I wasn’t satisfied. I sold that one and I want to make a great table.

I’m attaching a spread sheet of the electronics, and hardware I am using or plan on using. I at the bottom there is a room for improvement number as well. Please feel free to download the spreadsheet and upgrade things within that number. I want to use better components but I’m not sure which sites are legit and which aren’t. I have most of my things from Amazon just because it’s fast.

along with that I have a VERY basic step by step of wiring for the machine. im Sure I messed up some places, and I don’t know what kind or fuses or resistors to use. So please feel free to edit that.

you can also of course drop your suggestions down below. Thank you!!!




docs.google.com/presentation/d/10AUt24bO...T53mwfOj9KA48qw/edit


docs.google.com/spreadsheets/d/11eXPo2dd...rSzyX5pDd9XAxqk/edit

Okay, I’m trying to find a way to upload it

I think I fixed the links! Try again!

Oops that was a my bad. I fixed it. You can edit the slide and add comments to the spread sheet if you please.

i have 2 12V. The first is suppose to be field power. I have been told the more voltage you can send the proximity sensors the better bc it counteracts noise. The second is to power the fan, the board, thc, and the e-stop.

should I get a 5v and a 12v instead. Keeping the 12 for the proximity sensors and the fan, then using the 5v for the board and THC? Which should I wire the e-stop to?

do you have any suggestions on the spreed sheet? 

I'd probably use a mains powered fan as there are some nice industrial ones with matching vents..
the standard voltage to use is 24v. You only need about 2 amps. Small din rail mounted ones are nice and compact.
The THCAD can use 5v power from the Mesa card. There are pins with the encode to use for this.

What do you mean by main powered fan? I think I fixed the 5th slide, how does it look now?

any other suggestions on what I’m planning on buying? I have $700 to make sure everything is a good as I can get it. The links are on the spreadsheet. Please give everything a look over

Aldenflorio wrote:

What do you mean by main powered fan? I think I fixed the 5th slide, how does it look now?
 

Mains power = 240v AC here

Fans need a fair bit of power so it does not really make sense to run them off DC voltage as it just means you need a lot bigger power supply than otherwise required. Here is an industrial one I used.

Fan inside
 
Fan outside
 

Matching vent
 

What do you think about this one?

www.automationdirect.com/adc/shopping/ca...A4TByyEaAvQLEALw_wcB

would that require me to get another or separate power supply? What do you think about my other components in the google sheets? I would like to make the machine with the best components possible with my budget. The overall budget is 7k after taxes