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Third party software and hardware support forums. / XHC USB Motion Controller Speed Input
« on: April 11, 2017, 08:58:18 AM »
I am trying to set up a Lathe using a XHC 3 axis USB Motion Controller with Mach 3. Everything works great but I cannot get Mach 3 to read a consistent index pulse, indicated speed bounces around plus or minus 50 rpm of actual speed.
I am using a Hall Effect detector with an external 5v supply and the signal connected to Input 15 (not that it seems to matter which input I use as all result in the same problem). Mach 3 is running on a 64 bit Windows 7 computer (but have also tried it on a 32 bit XP computer). I have the Index debounce set to zero and Spindle Speed Averaging ON.
I have measured the pulse frequency from the detector and it is stable and accurately gives the actual spindle speed.
I have emailed the manufacturer of the motion controller twice in the last couple of weeks but have had no response at all.
I am fairly convinced that I have either wired the detector wrong or I have set something wrong in Mach 3.
If anybody has any idea how to solve this I would be most grateful as I'm desperate to have a go at Metric threading on my old Smart & Brown Sable Imperial lathe (now a CNC Lathe!!).
Many Thanks.
I am using a Hall Effect detector with an external 5v supply and the signal connected to Input 15 (not that it seems to matter which input I use as all result in the same problem). Mach 3 is running on a 64 bit Windows 7 computer (but have also tried it on a 32 bit XP computer). I have the Index debounce set to zero and Spindle Speed Averaging ON.
I have measured the pulse frequency from the detector and it is stable and accurately gives the actual spindle speed.
I have emailed the manufacturer of the motion controller twice in the last couple of weeks but have had no response at all.
I am fairly convinced that I have either wired the detector wrong or I have set something wrong in Mach 3.
If anybody has any idea how to solve this I would be most grateful as I'm desperate to have a go at Metric threading on my old Smart & Brown Sable Imperial lathe (now a CNC Lathe!!).
Many Thanks.