Messages

1

General Mach Discussion / Has anyone actually got a C11 to control a KB speed control via Mach?

« on: July 08, 2012, 07:37:02 PM »

Hmmm... I think those may be 2 of the pot leads that I forgot to disconnect. I will have to tear it apart again and see. The pot does nothing when I turn it.

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General Mach Discussion / Re: Has anyone actually got a C11 to control a KB speed control via Mach?

« on: July 07, 2012, 04:03:45 PM »

Well, I'm not electrician and it has been a while since I set this up but I will try to help.

Here is the C11.  The spindle control is on the bottom right.  The black and yellow cables just run to a DB9 port on the box.



The black and red wires from the C11 (for spindle power) run to a jack for this separate wall plug. 



You'll notice the power supply is actually 18V.  I know that the KB manual states the supply should be 0 to 10 or something like that but my motor is 110V and when I first set this up, I could not get it to power the motor up to full speed.  I spoke with Arturo from CNC4PC and he had me measure the voltage across the KB board with the PWM installed and it came out to more like 15V and in order to get 15V out of those leads, I had to use an 18V supply because there is a slight voltage drop.   

Here is a shot of the KB board.  The control wires from the C11 are the green/black wires in the heat shrink.  They are connected to the F- and P2 leads on the KB.



Now, I don't have my motor wired directly to the KB.  I have a g0704 and the original box had a FORWARD/REVERSE switch in place so I just left it (even though I don't use reverse).  I believe if you wanted, you could just run the A+/A- directly to the motor.  My A+ and A- go into the switch and from there it feeds back out to the motor (2 and 6 in this photo):



After that it was just a matter of setting it up in ports and pins:

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General Mach Discussion / Has anyone actually got a C11 to control a KB speed control via Mach?

« on: July 06, 2012, 01:24:34 PM »

I have my c11 and KBMM-125 using the spindle control just fine. I can pull it apart tonight to see how I wired it up. I do know that I am using a separate dc supply just for the spindle.

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General Mach Discussion / Re: Mach problem or hardware problem?

« on: October 11, 2010, 10:46:19 AM »

I get the same effect when I try any combination of 2 axes.  X/Y, X/Z, Y/Z, etc.

Also, I am running the 115V in to a 5VDC/2A power supply and am running that to both sides of the board.  Should I be running a separate power supply to the other side instead of using the same for both?

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General Mach Discussion / Re: Mach problem or hardware problem?

« on: October 10, 2010, 09:56:16 AM »

I could live at a slower velocity.  The nice thing about the higher rapids IMO is at the end of a job when I move the head and table to clear the part so I can remove it - especially if I am making multiple ones. 


The thing that bugs me is that it just seems like the machine functions fine one axis at a time, so why shouldn't it function fine with 2 axes? 

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General Mach Discussion / Re: Mach problem or hardware problem?

« on: October 09, 2010, 02:18:53 PM »

Just to add to this - it seems the reason it resurfaced once I thought it was gone was because I enabled backlash compensation.  I have between .0005 and .002 backlash between the 3 axes.  I have tried it with accel of between 10% and 100% and only turning it off makes the stalling go away.

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General Mach Discussion / Re: Mach problem or hardware problem?

« on: October 08, 2010, 09:31:39 AM »

Well, I thought I had this thing licked after copying over the other config but it appears to be resurfacing now.  One thing I noticed is that it doesn't normally stall when I have one axis moving and then just start another one moving.  It really tends to stall when I have one axis moving (e.g. Z), start another (e.g. X), then change the direction on the X.  I wonder if it has to do with the higher speeds that this mill runs and if it is not decelerating (the X) fast enough before going the opposite direction?

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General Mach Discussion / Re: Mach problem or hardware problem?

« on: October 02, 2010, 02:00:00 PM »

crud - i didn't set it back to the baseline after I was horsing with it.  I will create a new profile and test it.  the only things i originally changed were the motor tuning settings, the motor outputs and the input for the estop.

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General Mach Discussion / Re: Mach problem or hardware problem?

« on: October 02, 2010, 11:02:23 AM »

Man, I have been pulling my hair out over this.  I went out and bought a video card, parallel card, and new motherboard and figured I would start with the cheapest and work my way up.  I first tried the video card - it didn't fix it.  I then tried the parallel card and that didn't fix it.  Lastly, I installed the motherboard and completely reinstalled Windows.  While Drivertest was pretty happy about all of this (practically a completely flat line), it still didn't fix it.  I even had an old computer that was similar to the one on my working machine so I dug it out and tried to use it and even it would not work.

OK, so I took the config file from the new PC and plopped it onto my working machine (backed up its config first) and guess what - I get the same behavior on the working machine with that config file.  Previously, I just went in and modified the ports and pins when I connected it to the new mill.  I took the original config from the working machine, put it on my new machine, changed the ports and pins and it works!

So now I have boiled the issue down to a difference in the configs and I really want to know what it is.  Had I not had a working machine, I would have probably just cranked this one down super slow and figured thats how it should be working.

I downloaded the XML reader and went through it but the new (non-working) XML is twice the size of the working one.  I also don't know what every setting means.  I have attached both XMLs if anyone would be so kind as to help me identify it.


Editd to add - I did notice that Sherline mode was on in the working but that isn't the cause.  I tried that setting on the non-working file as well.

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General Mach Discussion / Re: Mach problem or hardware problem?

« on: October 01, 2010, 12:19:24 PM »

Here is what it looked like at 45k.  Mostly smooth but there are blips.    When I hook the new machine up to my other mill, of course I have the same stalling issues with multiple axes but it will even stall with a single axis.  And the times I could get the axis to move and not stall, the stepper doesn't sound smooth at all - the sound sort of fluctuates up and down.  Also every second or two it will make a loud BUMP sound.