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03-07-2016 #4
Yes there will be board but it's not forced to be Breakout board in the same sense as what your thinking. It will I/O board that's designed to work with the Accurite controller. Similiar to this below. This can't be used as BOB like what your thinking.
Regards Replacement I would think very carefully about what you use and all that goes with each. ie:
Steppers are simple and easy to impliment and can be if required (but wouldn't) run direct from parallel port. However they do not compare to DC Servo's so you'll take a big hit on performance/smoothness/power.
AC Brushless servo's which you'll most likely repace the DC Brushed ones with will be direct replacement and will perform equal or better. However then they cannot be run direct from PP because doesn't provide high enough pulse rate. This then means you need External motion controller to get full performance from servos.
That said even with Steppers you'd be best advised to fit external motion controller to get the best from steppers.
Another option If the drives and motors are working fine is to just replace the controller with Analog external motion controller designed for mach3. Like the excellent Cslabs IP-A which I personaly use or Kflop from Dynomotion.
Third option is to just replace the DC drives with Step/Dir drives and then you can use Standard setup.
The honest truth is that there's no cheap way to do this correctly. Yes you could just replace the motors with steppers and use the PP. But do this correctly still isn't cheap because large steppers are not exactly cheap also require drives that can accept high voltage which are not cheap. Then take into account the massive performance hit you'll take and potential hassle the PP can give. This to me would rule them out.
This approach is the old school way it was done because Servos where stupidly expensive and external motion controllers for mach few and far between. This is no longer the case.
Chinese AC Servos while still not exactly cheap are much lower in price than years ago and within reach of DIY. Put it this way you'll pay as much for large Stepper/Drive setup. You'll still need an external motion controller for mach because of pulse rate required but to be honest you'd need one for steppers to get the best from them.
If it was me and the DC Drives/motors are working fine then I'd just buy the IP-A controller and away you go. There's no Break out board required and it offers loads of I/O along with built in spindle speed control.
If at later date have any issues with drives/motors then replace with Chinese Servo/drives which accept both step/dir and Analog input.
See this Video I made showing the chinese servos/drives. It also shows the Cslabs IP-A and explains couple of things why I used it rather than Step/Dir version. (which I also own)
Last edited by JAZZCNC; 03-07-2016 at 10:42 AM.
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