Author Topic: XHC USB Motion Controller Speed Input  (Read 1825 times)

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Offline TurbineTed

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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.

Online Tweakie.CNC

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Re: XHC USB Motion Controller Speed Input
« Reply #1 on: April 12, 2017, 02:18:17 AM »
Hi Ted,

You could try sending an email to   cdxhctech_ly@163.com.   This is their after-sales service engineer.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline TurbineTed

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Re: XHC USB Motion Controller Speed Input
« Reply #2 on: April 12, 2017, 04:58:39 AM »
Hi Tweakie,

Thanks for the response, unfortunately this is the guy I have emailed twice with no response, maybe he is on holiday or something. I'll send another email to them soon.

Ted

Offline Alex He

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Re: XHC USB Motion Controller Speed Input
« Reply #3 on: May 25, 2017, 11:54:36 PM »
Daer Ted,

I will feedback this matter to our  after-sales engineer.


Regards

Alex He

Offline TurbineTed

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Re: XHC USB Motion Controller Speed Input
« Reply #4 on: May 26, 2017, 09:07:32 AM »
Thanks Alex