Downdraft design questions

This is what I ordered for testing purposes, 1ea only. Going to pick it up later today. Tomorrow I am going to block all but one of the ports on the vent tube and then cut directly over it to see how the 800CFM (at 0 SP) fan does. If that works I will move to the next stage.

www.alliedelec.com/product/smc-corporation/vdw10aa/70907905/

www.alliedelec.com/product/smc-corporati...mb075-0400/70070579/

Looks perfect!

I never went ahead with a downdraft table. The fan I have is one of these www.machineryhouse.com.au/F050

60 m3/min = 2120 cfm which is right on the 3' x 3' zone of 2025 cfm

But now I've seen your design, I am tempted again after I cleaned out my water tray yesterday!

That would be great if you did, so I can follow along! lol

I hope I'm not getting the cart too far in front of the horse. I have yet to connect my new LinuxCNC PC to the Mesa card. Not sure of the 'best' way to cut over from CandCNC setup to the new setup. Perhaps I will use the same plug style for my motors so I can still use the table while I learn the new system.

Kind of off topic, but do you know if the CandCNC Super Z II will work with the gear I purchased, which is the list you made for me. I did end up adding a few things, I got a 7176E as well as a Geckodrive G540.

We mocked this up today. I grabbed the wrong solenoid type, so we were limited to only one motion... also the air pressure was a bit on the high side.

Just watch the video here and get a similar valve. (5/2)

tameson.com/52-way-and-42-way-pneumatic-valve.html

You need to buy 2 silencer too with you use 5/2 (the gold piece at Rodw video)

Your cylinder model dont have cushion just bumper optional with no cost but you need too choose it. If you buy speed controler you dont wear your cylinder and reduce the noise at the end of stroke. I think you dont need full stroke so just 1 speed controller for the retract side is fine IMO but im always use 2 because customer requisite

You can use the 2/2 but need another 2 and need 3 output to control it using logic and at least one sensor to know the stroke position (5/2 is more easy because you dont know yet to program)
www.bimba.com/sites/default/files/Librar..._Pneumatic_Bimba.pdf

CKD solenoid valve is nice too if you can find it, you can abuse it a lot. SMC for manifold i like.
pneumatic we use CKD and SMC, Hydraulic Tayo/Parker.

Ok, I ordered some speed controllers... but no silencers. The silencer goes on the exhaust port of the solenoid?

If you were going to control eight of the dual action model cylinders, which manifold and valves would you choose. SMC is carried by a local vendor, but the options and configurations were hurting my head. It would be nice to have a manifold with some sort of cables harness that plugs into it and a multi-conductor cable home run to the electronic cabinet. Thanks!

If you use the 5/2 valves, you have two exhaust ports per valve. I'm no expert but as you will only ever get 2 valves activating at once (one extending, one closing) as you cross a zone boundary, you might be able to connect each side to a manifold and then you would only need two silencers which could be mounted remotely.

You should be able to use a DB9 cable as you only need one common ground wire for all valves. If you want something more industrial there are plenty of circular connectors. One cheap one you should be able to find on ebay is a Weipu SP21 series. They have 9 pin and 12 pin.

Correct. I should have posted that as a question to Himarc3D.

A brand he mentioned, SMC, makes industrial versions with manifold and bus wiring combined. If this experiment works with the cheap 5/2 valves that I bought on Amazon, I would be willing to order a custom 8 station 5/2 valve with the correct manifold and wire harness.

Ok, unzip this folder into your config folder. it will create a folder called gantry which is a basic sim I've edited to be your 6' x 12' table.
Navigate to that folder in a terminal window. typeCheck for errors and resolve or report back
turn on, home all. Load the ddraft.ngc file in the gantry folder.
From the machine menu, select show hal configuration. Select the watch tab.
in the tree for pins, find the ddraft4x2.0 component and click on all 8 triggers (numbered 0 to 7) to watch each pin.

run the ngc file and watch the magic happen!

Next step is to connect each trigger pin to a real output pin. (Remember what I said about diodes). I generally would do it like this:
So if you wish to change the zone boundaries you can edit ddraft4x2.hal file to change them

To go live, copy ddraft4x2.hal to your config folder and edit your ini file in a text editor (I use Geany!) and add it to the [HAL] section

Good luck!