Hi darko9000 – I’m an engineer with Teknic and I’d like to offer some suggestions regarding your application.
ClearPath has a built-in homing algorithm, called "precision hard stop homing", that provides accurate and repeatable homing and can potentially reduce wiring and sensors in your machine. To use precision hard stop homing, your machine would need to have reasonably stiff, physical hard stops (e.g. high durometer rubber or a metal such as steel or aluminum). Here is a video link (start at 3:34) showing the accuracy and repeatability of this hard stop homing feature:
https://youtu.be/-LubKmpB5-8?t=214
The HLFB (High Level FeedBack) output from your ClearPath motor is an optically isolated, open collector output, so it supports any voltage source, 5-24Vdc. I would recommend that you wire HLFB to an appropriate input on the MACH4 breakout board and configure HLFB to inform your CNC controller that ClearPath has completed the homing routine. Please refer to the ClearPath User Manual for more information on configuring and wiring HLFB:
https://www.teknic.com/files/downloa...ser_manual.pdf
The TWTADE/TA-8108 sensor is an electromechanical sensor that can directly control an electrical load. You can certainly use this sensor, but I find that customers (mostly in the commercial space) often use a logic sensor. For example, you could consider a non-contact, inductive sensor because they are non contact, typically smaller yet still robust for CNC applications. Although these sensor types are generally more expensive, I did find a reasonably priced one on Allied Electronics. Since you would wire this sensor to the MACH4 breakout board, be sure to verify MACH’s electrical preference: PnP or NpN type.
https://www.alliedelec.com/product/o...1-b1/70330923/
Some controllers also offer “software” travel limits – the controller will issue an error code and prevent motion if you try to jog the motor or command a position past these limits. I would check with MACH4 (New Fangled Solutions) to see if they provide this functionality. If they offer controllers with these software limits, then you could also eliminate the physical limit switches (and save more wiring). If this feature is not available, then you would need to wire limit switches to the MACH4 breakout board.
I hope this information helps. If you have any questions, or you'd like to talk about your specific application, please feel free to give us a call at 585-784-7454, or use our "Contact Us" form online at
https://www.teknic.com/contact/.
Thanks,
Abe A. - Teknic Servo Systems Engineer