In this video I describe how the AVID CNC touch plate works, and how to add normally closed 3D probes or tool setters to the machine. The documentation file I used in the video is stored here: drive.google.c...
Great video once again Jim. I plan to install an additional probe and this video is very helpful. Question just to clarify the destroyed resistor on the MOSFET driver, it is the inboard resistor in line with the signal connection, correct? Thank again for the videos.
I don’t use the avid touch plate anymore. I use an opto-interrupted touch off so I don’t need any conductive wire to my CNC Depot S30C. Opto interrupt also has better repeatability. I’ve had my system drive a bit into the avid plate, thankfully it did not brake my bit.
The other thing about the AVID plate is you really don't want to use it with the very sharp tip bits because it can chip the ends off. But thats probably true of any hard topped touch off or plate. On yours, does the beam get broken by the bit, or is the opto device inside the touch off and you are breaking the beam by pushing down a top plate?
@@JNWoodworks My design presses on surface and under stat surface there is a flag that brakes a beam. Still the same issue with pointy bits and plates. When I tried breaking a beam with the actual bit I had too much variability because enough of the point end of a V bit is needed to break the beam which means you are actually below the true tip of the bit. So the plate/plunger is the most predictable. The opto or Ir sensor broken by a flag is the most consistent I have found if you cannot do a continuity loop. All that said I use the tool table so I am also not touching off every time and change tools with my ATC, I measure it once and then the length offset is applied when I use the M6 macro to change tools. Hope this makes sense.
Question: How would you identify the version of the CRP850-00E board that you have? I see physically on the board a reference to "Rev F-04" similar to the screenshots that AVIDCNC have on their support pages.
Hi Steve, If you go to the AVID schematics pages: www.avidcnc.com/support/instructions/electronics/pnp/manual/17.4/schematics/ you can see a board outline for the CRP850 board. The one I have, 17.4, is pretty different. It has 3 connector blocks in the upper right corner, whereas the newer ones only have 2.
@@JNWoodworks Thanks for the clarification. I have just Port 1 and 2 spaced apart in the top right of the board, and with your link I see the other revisions listed on the support page. I guess my board is a 20.1 or 21.2.
