Messages

1

General Mach Discussion / Re: Setting up Longs Motor breakout board

« on: October 18, 2019, 10:02:07 PM »

I set up a new profile from scratch.  The changes I made were to go to 35000Hz, checked the enabled for X/Y/Z as well as the PIN numbers for step and direction.  Also turned the motors down to 10ipm and 3 inches of acceleration.  It was still acting the same way.  Only some steppers were buzzing, at least one wasn’t.  Either page up or page down would buzz Z, but also lock on X.

So the exact behavior as before, and the same as the previous board which I was thinking was faulty.  At this point I am almost wanting to go with something with better documentation.  I’m happy to take any suggestions with this current board, but would also be open to other controllers that are better documented for setting up in mach3.  Don’t have the budget for G540s, but there has to be something else out there.

2

General Mach Discussion / Re: Setting up Longs Motor breakout board

« on: October 17, 2019, 02:00:19 AM »

Here it is.  Didn't know that was a thing.  Good to know.

3

General Mach Discussion / Setting up Longs Motor breakout board

« on: October 16, 2019, 11:42:15 PM »

Hello All.  Once upon a time I had Mach3 configured for a micro CNC mill.  It was working great, but was outgrown by my projects.  I sold it to free up space.

Now, using what was the default profile, not the one for the previous mill, I am working on a new setup.  It's a NEMA 23 Longs Motor kit.  The micro mill ran fine at 10 IPM and 3 in/s/s acceleration.  It is set to inches in the units area.

If I turn off the e-stop, I get zero movement or buzzing with X, nothing with Y, and buzzing with Z.  Here's the fun part.  When I press the down arrow key, an LED in a row of 4 (so not the 3 green ones that says each axis is working) lights up and it locks up the X axis!  It gets hot from this until I turn it off.  I measure the XA+ and XA- and am getting 24V, which is what my power supply is.  I thought this was a failure of the board, so I asked about it.  They sent me another one and it acts the same way.  If I press the up key the light goes off and the stepper cools down.

In the Port and Pins window, first tab, I have the port #1 checked and it says 0x378 and has 35000Hz selected.

On the next tab I have:
X step: 1
X dir: 7
Y step: 8
Y dir: 3
Z step: 5
Z dir: 4

All are enabled with the check mark.  Step and dir port is set to 1 for all, just like in the manual.  The other tables match the manual too.  One thing that is curious, with the 25 pin cable it says there are enabled pins for X/Y/Z.  Those are 14/2/6.  In the output signals tab they are shown.  In the ports and pins tab, I can put these numbers in with the enabled check mark, but when I click away, it goes away.  Not sure if this matters, but I've seen it, so I'll point it out.

The dip switches are: on off on on on off for each axis.  I think this is important for the microstep, and is set to 1/2, but don't remember where to confirm this.

Really appreciate any help with this.  I've read a few threads, including this one (https://www.machsupport.com/forum/index.php?topic=35229.msg241737#msg241737) and a few on locked up steppers.  I'd love to even get that far.

Just for fun, I went into the MAXNC profile, which was for the old mill.  All 3 axis work, but very odd.  Sometimes when moving Y, X will move as well.  Something happened with Z and another as well.  Z movement makes the relay on the board click on and off a lot.  None of them will spin an opposite direction.  Always the same no matter which key is pressed.  I know I should expect things to be off since this isn't the profile given in the instructions, but I find it funny that it works more than the profile I made following the instructions.

The step/direction pins are as follows in that profile:
X: 6/7
Y: 4/5
Z: 8/9

4

General Mach Discussion / Re: MAXNC-10, HSM, alignment issue

« on: June 14, 2014, 08:29:31 PM »

Let's see if I can post the txt of what the machine is trying to do:

Code: [Select]

(CONE_SLOT)
(CONE_SLOT)
(T3  D=0.054 CR=0. - ZMIN=-0.38 - FLAT END MILL)
G90 G94 G40 G49 G17
G20
G28 G91 Z0.
G90

(2D POCKET1)
M5
M9
T3 M6
S1000 M3
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M9
G28 G91 Z0.
G90 G53 X0. Y0.
M30


5

General Mach Discussion / MAXNC-10, HSM, alignment issue

« on: June 14, 2014, 08:10:21 PM »

Machine 0,0 is at the bottom edge of my hole plate and the right edge of the 1x1x4 bar seen in the second picture.  Orientation of the cut is ok, but the position is off.  Out of ideas and could use a few.  I have not made any cuts with this machine yet, but it is set up IAW a pdf online for this specific machine and everything seems to be acting as it should.


Here is the way the job is set up.  0,0,0 is the center axis and the top of the part.


Here is what the cut preview looks like.  Looks good to me.


Here is the part on the machine.  It's hard to see, but the spindle is lined up with the axis.


Job zero, after hitting regen toolpath:

My machine does not have limit switches.  It is set up IAW the pdf in this thread: http://www.machsupport.com/forum/index.php/topic,11409.0.html

Machine coords, same spot:


Offset tabs, just in case.  Job coords:


And machine coords:


My question is, why is the toolpath to the top left of my g54 zero?  Shouldn't it be center and below?

6

FAQs / Re: Older MAXNC-10, no jog only steps

« on: January 29, 2014, 10:34:07 AM »

They were set correctly, but longer movements were being reduced to almost nothing.  I ran it last night and just about ran about of room. 

7

FAQs / Re: Older MAXNC-10, no jog only steps

« on: January 28, 2014, 02:36:15 PM »

Sounds good.  I was just thinking about that earleir today.

8

FAQs / Re: Older MAXNC-10, no jog only steps

« on: January 28, 2014, 10:05:54 AM »

Try lowering you velocity and accel in motor tuning. Say 50% and see what happens.
RICH

Hi Rich, you know what's funny, I had seen a post in my searching that said to cut them in half, so I had done that.  Didn't work.  In the spirit of things, I cut those in half again and guess what, it worked.  I went from the 120 and 10 that the pdf shows to 50 and 5, then to 25 and 2.5.  That last one works just fine (only did X this morning, will do the others when I get home) and doesn't seem to be very slow at all.

On your video, the first run (continuous) looks and sounds like a classic resonance problem (growl) followed by a stall (higher whine). The second run (step) looks and sounds like resonance with (possible) missed steps but with no actual stall.

Two other things I noticed from your video: You have Max NC 10 Wave drive selected whereas in the PDF you linked to he's using Max CL Mode. The other is a lesser point: He has an output set to pin 10. Pin 10 is an input so this makes little sense.

In one of the first paragraphs in the pdf it mentions that post-2004 machines have the same board for open and closed loop, so the CL option should be used for both.  From my understanding, the wave option is for pre-2004 boards that are open loop.  I have no idea about the pin 10 setting in the pdf, will research that a little more to try and understand.

Now to work on the spindle, assuming the Y and Z mimic the X settings that are now working.  I saw a few people just control the spindle with a variable switch.  I might just do that since I have used the same exact thing to control a mini lathe in the past.

9

FAQs / Re: Older MAXNC-10, no jog only steps

« on: January 27, 2014, 10:30:00 PM »

I made a video of what I am seeing.  I don't stay at each menu very long, so please pause the video if you want to see them a little more closely.

http://www.youtube.com/watch?v=3PPySSPR6Rg&feature=youtu.be

10

FAQs / Re: Older MAXNC-10, no jog only steps

« on: January 25, 2014, 12:25:56 PM »

Should have mentioned that I have the units set up for inches.