Messages

1611

General Mach Discussion / Re: Very odd rapids stepper motor stalling problem

« on: February 23, 2013, 02:41:15 PM »

OK, can you try those same test in CV mode and exact stop?  This is interesting.

Brett

1612

General Mach Discussion / Re: Very odd rapids stepper motor stalling problem

« on: February 23, 2013, 01:54:11 PM »

Try setting your backlash comp speed to 0.1 and let me know how it does.

Brett

1613

General Mach Discussion / Re: Very odd rapids stepper motor stalling problem

« on: February 23, 2013, 01:23:41 PM »

Are you running in exact stop mode or CV?  Does it chage the results if you change the mode?

Brett

1614

General Mach Discussion / Re: limit switch triggered

« on: February 23, 2013, 01:14:33 PM »

   Good deal Jim, that's great news.  I know what a pain noise can be.  I have no idea about your crispy component though.  Maybe looking in Allied or Newark will give some ideas.  Size and spacing may well be a big clue.  I just got a 300 watt resistor for a VFD.  Hated to spend the money as I have a couple the exact same size (wattage and physical) but the one I needed was 70 ohm and the ones I have are 26.  So, long story short, I have noticed the size of a resistor usually gives a good idea as to the wattage rating.  Has nothing to do with resistance value though.  I also have no idea if that is a standard that is adhered to across the board or just the product of common manufacturing processes or what.  I understand why larger wattage resistors are larger in size but no idea if you used different materials if they would have to be a certain size because of a standard.  I also know I have one PC that is 17 x 16 x 7 and another that will fit in one of the 5.25 bays on it that has more ram, storage and a faster processor than the big one.  

Brett  

1615

General Mach Discussion / Re: Very odd rapids stepper motor stalling problem

« on: February 23, 2013, 12:47:48 PM »

I think your accel rates are too high.  Short snappy moves will show this.  Backlash comp. will as well.  There isn't enough time to change direction of the motor and all the mass hooked to it.  All of this has to be done in a fixed time window so your path will be accurate.  Naturally a huge Arc allows time for an axis to slow and change direction.  I know your machine can travel much faster than you typically run or even rapid at, but it doesn't have the guts to snatch the amount of mass around your trying to in such a short amount of time even though it is a short distance.

Brett  

1616

General Mach Discussion / Re: Settings lost?

« on: February 22, 2013, 07:53:43 PM »

 

Brett

1617

General Mach Discussion / Re: limit switch triggered

« on: February 22, 2013, 02:24:32 PM »

Johnny, again, going back to an earlier version would be simple enough to try.  Let us know if it helps.


Yeah Jim, as Hood said, that could be the source of your pain.

Brett

1618

General Mach Discussion / Re: Need lots of help!! Nothing is working....

« on: February 22, 2013, 12:56:31 PM »

You can also use this bang up xml reader to compare XMLs.  Klauss did a great job on this.

http://www.machsupport.com/forum/index.php/topic,9561.msg122956.html#msg122956

Brett

1619

One on one phone support. / Re: Please can i get some phone support

« on: February 22, 2013, 12:53:15 PM »

What company sold you the Lathe?  If you go to the manual page and spin the spindle by hand, do any of the spindle speeds show how fast your spindle is turning?

Brett

1620

General Mach Discussion / Re: Need lots of help!! Nothing is working....

« on: February 22, 2013, 12:48:16 PM »

Sorry Peter, I did get started on looking at them and had to pull off.  You don't have much set up in your Gecko profile. The steps per in motor tuneing doesnt seem right in either one of them.  How did you arrive at those numbers?  I think if you go through your settings in the profile that works and then make the one that doesnt work match, you will be good to go, at least a lot closer.  Take some screen shots of the one that works or a pen and paper and write them all down.  If you can get another pc (laptop) beside your machine pc, put Mach on both and set up your new profile as you scroll through your old.  I have sent you a personal message.

Brett