Centroid Community CNC Support Forum

Hello all, here is a link to my home built plasma table, and retrofit.

LINK TO PHOTO ALBUMN


2x4x.25 hot rolled tube framing, welded on jig table.

4" deep water pan .125" thick cold rolled steel

Cutting table capacity 5feet by 7feet (specific size for location when first built)

Teknic Clearpath SDK SERVO nema 34 motors, Teknics power supply and power hub. Servo part# CPM-SDSK-2311S-RQN

20pitch rack and pinion x and y axis from AVID CNC

Parker 404XR linear actuator. Ballscrew is precision ground 16mm dia. x 5mm pitch and the rails are model Hiwin MGNR9H with two bearings on each rail.

All limits are Pepperl + Fuchs NBN8-12GM50-E0-V1 NPN inductive proximity switch.

Limit switches installed on X, both ends, Y (2) on Y- and (1) on Y+ left side. Z+ (1)

Control panel is 24x24x6, Sagamaw NEMA1, with foam seal installed to keep dust out.

3to1 belt reduction system (AVID)

Speed Demon lineal rails, with 5 wheel bearings trucks SGR-20 model. Two trucks on each Y rail, two rails, two trucks on X gantry.

Cable retainers from McMaster Carr

Wire 18/2 or 18/3 plenum rated sheilded from Reliable Wire (Chicago)

Hypertherm XP45 with machine torch.
Torch Holder, collision detection, floating head, two prox sensors for collision, one for floating head. Made in house.

New NUC pc Part number# BOXNUC8i3BEK1 , purchased thru Newegg computers, with Win10 Pro.

REMOVED COMPONENTS
Neuron Simplicity THC (TO BE REMOVED)
UCCNC AXBB-E controller TO BE REMOVED)

thanks for posting looking forward to working with you. -Keith

Received my package for Centroid Acorn/Plasma today, also received new NUC PC, and picked up a new 24x24x6 enclosure from my old company, nice seeing some of the crew again!
Will start layout tomorrow.

Unpacked package, short (1) 7 pin green connector for THC.
Made stand offs out of din rail flipped over, with nylon spacers. Removed cord from Acorn power supply, and made a short din rail for all 120vac and grounds, installed 3amp din rail circuit breaker as on/off and short protection on line voltage side.
Kinda playing around with layout. I am using Teknic Clearpath SDK, so no drives inside controller cabinet.
Updated photo albumn

looks great thanks for the update!

Was the green connector at the end of the power supply cable? That's where mine was.

A few pointers since I just finished my plasma retrofit with Clearpath motors a few days ago:

- remember to keep the RX and TX boards as far apart as possible in your layout.
- does your Z axis motor have a motor brake or counter balance? If not consider wiring the orange "enable" lead for this axis to COM so it's enabled as
soon as the motor powers up. If not it'll drop when ever you press estop, the reset button or the breakaway trips and when you shut down. I wired
mine to enable as soon as it powers up and then I can remove my mechanical stop.
- dont forget the 100 ohm 1/2 watt resistors for the motors, you'll need 12 of them.

I wired two Clearpath motors to the third axis output as I plan on adding a rotary axis to the 4th output. The system was designed with a 4th rotary axis from ShopSabre but it was missing as I bought this used at auction. I have all the cables ready to go to add a 4th rotary axis.

Good luck and thanks for posting.

Thanks for the tips Shawn!

Has anyone used the CNC4PC C86ACCP card (Clearpath SDSK) with the Plasma application? I see there is a wiring diagram base on using this card. My 2nd question is: Are the 100ohm .5watt resistors required when using the above referenced interface card, or is that built into it?

I don’t know of any other beta tester using one yet. Why do you want to use this board? Do you think it’ll be easier?

Frankly it’s just not needed and is just another part that can fail. Have you heard the term KISS? Keep it simple stupid. I’m not at all calling you stupid as I don’t know but rather making a point. I know there are many who’ve used this board on other CNC machines and I’ve seen a lot of topics and posts asking questions on how to get it to work. I just wired 4 Clearpath motors on my plasma table directly to the Acorn headers with the required resistors and it worked perfectly the first time. Why complicate the issue with yet another part that can fail? Just my two cents so take it at face value.

Thanks for the input as usual. Correct me if I am wrong, would I not get better diagnostics when a drive fails (visual led)? Also the wiring diagram from Centroid shows an external board monitoring the faults, then wired into a single input on Acorn. Isn't this C86ACCP board eliminating another board?