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My K2-CNC stopped responding to Mach3. Last night when I was finished for the day I sent the router back to its home position using Reference All Home, which is what I usually do so the table is...

Craig,

I thought the Z travel was 5 inches on this machine, but it seems to be a bit more. I reset the Z SoftMin to -5.25 and that seemed to do the trick.

Another problem solved. On to...

My K2 KT3925 came with the Homing/Limit switches installed at the far right XY corner and top of the Z of the machine, so when doing a reference all home that becomes the 0,0,0 machine coordinates. ...

Jim,

Well I cleaned all the contacts with 2000 grit polishing paper and electronic contact cleaner, reseated all the connections in the Servo.... so far so good. It has been up for 4 hours with...

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Hi Jim,

May have narrowed the issue down to the...

Very strange. I can pull the parallel cable out both with the Servo controller on and off and it doesn't trip the limit switch error. I going to leave the cable out and just let the computer idle...

Just another piece of information. I noticed even with my Servo control box powered off Mach 3 eventually reported that a limit switch was tripped. Could this be trigged by something in the Dell-PC...

Original to the K2 CNC - 2010.

Thanks. I will keep looking at possibilities.

Thanks Al. The machine ran fine when new so I would assume at that point in time it was grounded/shielded properly. Nothing had changed in terms of equipment when this showed up over a year ago....

I replace all the limit switches. I have ordered a new parallel cable to try to eliminate that. If it is in the control box that will be a bit harder to figure out. I have not been able to get it...

Each switch is separate. The ethernet cables that connect to the encoders also carry the power to the limit switches. They go directly into the K2 servo control box (This system came all setup,...

Thank you for the suggestion. I am not exactly sure how to do that.

Thanks Jim, The switches are wired (NC) normally closed and the Mach 3 ports are set to Active Low.

I am hoping someone can shed a bit more light on this issue. I have been struggling with this problem for quite some time, and now that many of us have a bit more free time I was hoping to get some...

Does anyone know what the function of this connection is on the K2 Servo Controller box? It is a single wire that is attached to the 5V pin on a male USB plug....

K2 users, I have a KG3925 (parallel interface version) and the Servo Motors seem to twitch when idle. You can hear the audible intermittent noise and if I put my finger on the Z axis motor belt I...

It did not eliminate the problem completely, but the frequency is much, much less. What would you like a picture of?

Thanks, I am sure it would be a good idea to make sure all those cables are making a good connection and are secure. For me it was X-axis that would show up being tripped on the diagnostics tab. ...

Russ,

I have order a bunch of Ferrite Cores and will look into getting the EMI protection.

An interesting development today as I was running some tests. I had set my xyz zero location on the...

Thanks!

Do you think this EMI/Surge protection would do the same thing as the EMI filter?

https://www.amazon.com/dp/B0000513US/_encoding=UTF8?coliid=I3QYLCMT886I32&colid=2X3UK6ITAUI2P&psc=1
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Russ,

Thought maybe we found the issue, but after installing the braided shield on the router power cable and grounding it, the machine ran for a good 30 minutes and then up and stopped. I had to...

Thanks again. I really appreciate the time you have taken to respond to my questions.

Bob

Russ,

Looks like you shield just about everything. On my K2 the 24V DC power cables to the servos don't look shielded and they are running along side the data cables. That is they way it came. ...

Also I think I will need 3/8" rather than 1/4". Measured the cable and it is bigger than 1/4" diameter.

Russ,

Thanks! I will order that today. Just have to figure out how to shield this connection point. I may have enough length on the AC cord to get this past the end of the drag chain. This...

Ah, used the wrong term in my early post when I said "spindle". My K2 (which has the issue) has a porter-cable router, the other machine I use an Axiom has a liquid cooled spindle. Sorry for the...

I am looking at this usb connection and I suspect this is not carrying any data. It comes out of the pc as a regular usb connection, but connects to the servo controller as a single post electrical...

Thanks Russ,
So the aluminum frame is grounded to the Servo Controller, and I believe the K2 has shielded Cat5 cables. What I am noticing after I read up a bit on what you were saying is that the X...

Thanks for the thought, but it is a full licensed version of MACH3