Messages

361

General Mach Discussion / Re: motor settings

« on: October 29, 2014, 12:48:20 PM »

should have also asked for your microstepping value. I'm trying to see what rpm your motors would be doing at your max velocity.

Also can you describe in a bit more detail under what circumstances/speeds you get stalling.

The thing is I suspect you're attempting speeds that your motors just aren't capable of because they're quite "under-volted". They're very high inductance motors really and are not ideal. To get their optimum speed/torque they'd need a PS voltage of 84V. Your 36V means their max speed is less than half what it should/could be. As I said earlier those motors are a poor match for the drivers.

362

General Mach Discussion / Re: motor settings

« on: October 28, 2014, 12:26:45 PM »

Is this your kit that we're talking about? (from a previous post)

http://kelinginc.net/CNCNEMA23Package3x.html
CNC 3 Axis Stepper Motor Kit with 425 oz-in motor and KL-4030 Bipolar Driver with 36V /9.7A Power Supply (110V/220VAC):
(3) 425 oz-in stepping motors, NEMA 23
(3) KL-4030 Drivers (3.0Amp 24-40 Volts, 1-1/64 microstepping)
(1) 36VDC/ 9.7A Power Supply 110VAC/220VAC
(1)C10  Breakout board
(1) 5V power supply

if so and these are your motors:

NEMA 23 BIPOLAR STEPPER MOTOR 425  oz-in KL23H286-20-8B

Then the motors are not the best match for those drivers and power supply. What do you have set in motor tuning for steps/per and max velocity?

363

General Mach Discussion / Re: gcode to mill half ball with cnc mill

« on: October 28, 2014, 07:35:34 AM »

I can't remember what I did last week - never mind 7 years ago  but from a quick look - yes - the comments in the code should tell you which values to change for your particular hemisphere.

364

General Mach Discussion / Re: Closed loop system, encoder connected to mach3

« on: October 28, 2014, 07:31:10 AM »

LOL - no worries Scott - seems that thread resurrection is happening a lot lately 

Ian

365

General Mach Discussion / Re: motor settings

« on: October 28, 2014, 07:27:29 AM »

Back to the original question

Which is 4 years old BTW 

As your machine WAS running ok for a while, this would not be the first thing I'd be looking at. That said, these values should only need to be changed if the specs of your drivers or BOB demands it. That of course means you need the specs from your manuals.

366

General Mach Discussion / Re: Closed loop system, encoder connected to mach3

« on: October 27, 2014, 12:59:51 PM »

We do all realize the thrux of this thread is 4 and 1/2 years old? - Not sure why it was resurrected or whether I can summon the effort to read who said what all over again TBH 

367

G-Code, CAD, and CAM discussions / Re: GetVar(2002)

« on: October 22, 2014, 02:50:24 PM »

your original post asked about MsgBox ZProbePos always printing 0

Not only is there no call to MsgBox in this code there is also no variable called ZProbePos

368

G-Code, CAD, and CAM discussions / Re: GetVar(2002)

« on: October 22, 2014, 07:30:18 AM »

post your macro

369

G-Code, CAD, and CAM discussions / Re: GetVar(2002)

« on: October 21, 2014, 10:39:58 AM »

depends on which concatenation operator you use (+ or &)

Test = 1234.5
MsgBox "Test = " & Test

is fine.

370

General Mach Discussion / Re: 1 drive 3 axes and mach 3

« on: October 10, 2014, 07:25:49 AM »