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Messages - coachm

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1
General Mach Discussion / Phantom Limit Switch
« on: March 17, 2016, 08:09:41 AM »
Breakout board is a parallel port board c10 is on it. No motion control, direct to PC.  We varied the debounce range from 1000-8000 because we could not successfully run the program more than two times in a row without the phantom limit switch. We then tried to isolate which limit switch that was creating the signal by turning off the pins in Mach3. However, it was sporadic on which one triggered it. The program runs when all of the limit switches are taken off. I also grounded all of the shielding from the input wires to try and eliminate any rogue signal from that.

We tested all of the motors and grounds for the machine which have continuity. We tried ceramic capacitors as per a suggestion which did not solve the issues. The CAP's are now removed. We are still experiencing a "limit switch triggered" almost half way through the program. We detached the proximity sensors from the machine and tried to run the program to see if vibrations were causing the limit switches to be triggered, it was not the case. The "limit switch triggered" message came up again during the process.

Machine is a Chinese KL-1212V with NEMA motors that we replaced. Purchased through Automation Technologies.  Wea re debating about swapping the VFD out with a machine that already works.

Please let us know if you have any ideas.

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General Mach Discussion / Re: Reference Home Error
« on: March 16, 2016, 02:13:12 PM »
We detached the proximity sensors from the machine and tried to run the program to see if vibrations were causing the limit switches to be triggered, it did not work.  The "limit switch triggered" message came up again during the process. 

3
General Mach Discussion / Re: Reference Home Error
« on: March 16, 2016, 01:36:15 PM »
We tested all of the motors and grounds for the machine which have continuity.  The CAP's are removed now and the limit switches work.  We are still experiencing a "limit switch triggered" almost half way through the program. 

4
General Mach Discussion / Re: Reference Home Error
« on: February 22, 2016, 11:42:11 AM »
I wired the .1mF caps in there.  When reffing home the proximity sensors will light up but not stop the jogging.  I tried to run a simple program anyhow but the phantom limit switch still triggered.  

Definitely noise somewhere so we will be continuing on the list of ideas that are in here.

5
General Mach Discussion / Re: Reference Home Error
« on: February 19, 2016, 02:05:58 PM »
We do have a VFD

6
General Mach Discussion / Re: Reference Home Error
« on: February 19, 2016, 01:06:26 PM »
Overloaded- Thanks for the troubleshooting suggestions.  We have had repeated success by turning the spindle off during the "in air" run.  No phantom limit switch errors when the spindle is off. 

Do you think switching out the proximity sensors for a physical switch would solve the problem?  Is there something else we can do instead of having to change those out?

I appreciate the ideas!

7
General Mach Discussion / Re: Reference Home Error
« on: February 17, 2016, 08:14:55 AM »
Hello,

We removed the CAPs which were .01 but and put the debounce setting at 5000 which ran the program.  We varied the range from 5000-8000 because we could not successfully run the program more than two times in a row without the phantom limit switch.  We then tried to isolate which limit switch was sending the signal by turning off the pins in Mach3.  However, it was sporadic on which one triggered it.  The program runs when all of the limit switches are taken off.  I also grounded all of the shielding from the input wires to try and eliminate any rogue signal from that. 

As far as the ESS and Gecko XML, the Middle School runs a Gecko and we are using the C10 directly to PC.  That has not helped in our troubleshooting situation.  Unfortunately the guy who built the CNC in the Middle School and rewired/worked on this one in the High School is no longer available. 


8
General Mach Discussion / Re: Reference Home Error
« on: February 16, 2016, 03:15:51 PM »
The XML is now attached. 

Other answers from questions that had been asked:

Breakout board is a parallel port board c10 is on it.  No motion control, direct to PC.

12, 13, 15 are the pins for the limit switches on the BoB.

We are looking into the debounce settings now since we now have our limit switches showing activation but will not stop the axis.

Prior to the ceramic caps we only had a phantom limit switch and everything was working.

9
General Mach Discussion / Re: Reference Home Error
« on: February 16, 2016, 03:03:37 PM »
How can I access the XML file?  I went into the C drive and into my Mach folder but I cannot find anything aside from a basic TXT doc that says profile.  When I open that it just says CNC Mill in it. 


10
General Mach Discussion / Reference Home Error
« on: February 10, 2016, 01:07:34 PM »
We unfortunately lost a colleague who was the brains behind all our automation in our district's technology education labs and need assistance.  We had a phantom limit switch triggered during our milling process and looked for information to fix this issues.  We went ahead and wired in ceramic caps where the inputs meet the BoB. 

The problem: The machine will not recognize the limit switches when we reference home.  They do not even illuminate when manually jogged to the/past the position.

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