Hey folks,

for my LinuxCNC powered CNC-PlasmaCutter with EtherCAT components i needed a simple and space saving way to mount my MESA THCAD10 PCB (ADC). Since all avaliable mounting options with DIN rail clips are fixing the PCB horizontally, i needed to design my own. This design uses standard M3 heated inserts which fix the THCAD via four M3 x 8 mm socket head screws.

The adaptor in the pictures was printed in ABS on a Voron2.4 with 260°C nozzle, 110°C bed and 0.2 mm layer height in around 1 h.

Short technical explenation: The Finder relais are for Ohmic Sensing and triggering the plasma. The THCAD AD-Converter is used in combination with the voltage devider to convert the plasma voltage into a frequency signal, which is then meassured by a Beckhoff EL5101 incremental encoder input card.

The DIN rail mount was copied/remixed from here: https://www.printables.com/de/model/556742-adjustable-din-rail-clip-freecad/files

Used...

• VoltageDivider: (Proma) https://proma-elektronika.com/product/plasma-voltage-divider/
• THCAD-10: (Mesa) https://store.mesanet.com/index.php?route=product/product&product_id=127&search=thcad+10