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Messages - jasminder

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11
General Mach Discussion / Re: Mach3 VS Other motion controller for stability
« on: September 02, 2012, 03:31:32 PM »
I will post my experience after grounding the electronics.
thanks to Hood and jeff once again.

12
General Mach Discussion / Re: Mach3 VS Other motion controller for stability
« on: September 02, 2012, 03:29:12 PM »
I have found most 'stability' problems are really problems related to how the machine was put together. Poor wiring practice often leads to incorrectly grounded machines that give the PC fits. Some types of components, like VFDs produce a LOT of electrical noise and if not installed properly (grounding, isolation, etc) then there is almost always problems.
Dear jeff,

I will try grounding everything there is to be grounded.
The VFD ate my CRT monitor's display. Guess what it will be doing to the control. You are absolutely right.

regards,
jasminder singh

13
General Mach Discussion / Re: Mach3 VS Other motion controller for stability
« on: September 02, 2012, 03:25:02 PM »
I run two of my machines from via Pico motherboards which are only 1Gig CPUs. I do however use external controllers (Smoothstepper and Ethernet Smoothstepper) and that does take a lot of the stress away from the computer.
Using 25KHz should be the most stable but 1/4 stepping is probably not the best to use, I think 1/10 is optimum according the Gecko so as close to that the better. That however will make no difference to the computer so its not your problem.
Maybe your issues are power? Could your power be dirty and fluctuate a lot?

I am testing out a new external controller at the moment from CS Lab of Poland and so far it is looking very good, it also runs needs Mach but everyone I have seen so far that is using them seems to like them and no issues so far.
Hood
Hmm, you could be right. I have a a second PC hooked up on my machine and i think that when a PC is just new, it works better. But after few months it starts creating problems. It could be the dust destroying the M-board possibly. Do you know a cost effective solution to keep the electronics and control cool while keeping air tight? I was thinking about using a small refrigerator and changing the thermostat with a 25-35 degrees or using a cheap closed loop temperature controller with the fridge(17$ on ebay). Panel coolers and heat exchangers are very expensive here. A used on on ebay i found for 300$. (a new small fridge cost here 100$). The idea seems funny but i guess it should work if i keep the temperature a bit high than the Dew point.

regards,
Jasminder singh

14
General Mach Discussion / Re: Mach3 VS Other motion controller for stability
« on: September 02, 2012, 03:05:10 PM »
I have no experience with the controls you mention but also I have never experienced any of the problems with Mach that you mention. I can not remember the last time I had the computer freeze up etc.
Sounds to me like you have problems more with the computer than with Mach.

Hood
I am even more confused when everybody says me that. Seems like i should try a faster computer than a P4.
Do you think that changing the kernel speed of the program should help improving the stability?
I always use 25khz.
200 pulse/rev steppers used at 1/4 stepping. Two axis only.

thanks for your help,
Jasminder singh

15
General Mach Discussion / Mach3 VS Other motion controller for stability
« on: September 02, 2012, 02:56:07 PM »
Hi guys,
Long time since my last post. I need a suggestion from the experienced here (hello Hood)

Well, i have been using mach3 for the past 2 or 3 years on my DIY lathe (but it hardly ran for ~500 hours or a month if calculated precisely)
I love mach3 for its ease of use, simplicity and features except the stability (the unknown error triggers, system hangs etc)
but i am now going to make another CNC for commercial use and need a more stable control that won't crash or hang all the day long.
Should i go with some commercial CNC controls like Fagor or GSK (i want to keep the price low) or these new CNC lathe software + hardware combo are of any use? (planet cnc, USB cnc , Probotix USB CNC etc) They don't use Mach3 and have their own brains.
I want to know if you have any experiences with any of these (i was thinking about Mach3 + smoothstepper but i read that the setup is still not stable enough).
I contacted Mach3 support and the reply was "Mach3 is what it is for now".
I am double minded about this controller thing. Please put some light (i am afraid i will spend 2000$ on a commercial control and end up frying it's inputs and outputs maybe) I just need to control 2 axes and a turret. No fancy features are needed.

Jasminder Singh

16
General Mach Discussion / Re: mach 3 going mad. Should i try turbocnc?
« on: November 21, 2011, 12:39:19 AM »
Quote from: RICH link=topic=20086.msg139319#msg139319 date=132173745
[quote
I have a lot of casting iron being ground every day around the machine.
That grinding dust goes everywhere. You shouldn't have a cnc machine let alone a PC near it. The grinding area should be vented properly.
RICH
[/quote]

today i did a bald but working trick to the control PC. I laminated its hard disk, mb, pci cards etc with some polythene and cello tape. Just the PSU and processor heat sink is bare naked. And wow it worked. Today i ran it for a couple of hours but it didn't do any stupid or unwanted move neither it restarted automatically.
I will see if this setup can work for an 8 hour shift and will post the result.




17
General Mach Discussion / Re: mach 3 going mad. Should i try turbocnc?
« on: November 19, 2011, 02:28:21 PM »
THE absolute worse thing you could do is blow the PC/electronics  out with an Airhose IF conductive dust is the problem. It just drives the dust deeper into the board and connection points.

Rule #1 protect your electronics  from the dust.

Just a thought (;-) TP


i was a dumb till now...thanks for your suggestion.
i will air tight the cabinet and put some peltier plates in the PC for cooling. Any other cost effective way to keep it cool and air tight.

18
General Mach Discussion / Re: mach 3 going mad. Should i try turbocnc?
« on: November 19, 2011, 02:26:33 PM »
changing software is not going to solve anything if the hardware you have it on is faulty.
mach 3 is very very very stable.  I have been using it for years!  I have 6 cnc machines in my garage alone running on mach 3.

Everything from printer port operation to smooth stepper mills and lathes.  I even have mach 3 running from a acer netbook with a smooth stepper.  Get your computer lined out first and formost otherwise your not going to have luck with anything.
i would appreciate if you can suggest me a way to do so. Any place for panel AC???? the fans and filters are not gonna work here. I have a lot of casting iron being ground every day around the machine.

thanks for your help,
jasminder singh

19
General Mach Discussion / mach 3 going mad. Should i try turbocnc?
« on: November 19, 2011, 01:14:08 PM »
hello folks,
this mach3 thing is bugging me now. My pc was restarting without giving any errors or beeps so i got a new one that worked well for a couple of months and now the same situation. It is also restarting automatically when running mach. It behaves strange sometimes. For example, it automatically starts the spindle or the cycle start button even if i haven't touched their external buttons. When i saw the diag screen i see that the spindle output is not active still the spindle relay was on.

I think that too much conductive dust is shorting my pc's board or lpt ports. But i regularly use air blower on it when i am going to turn on the machine. BTW i am planning to give turbocnc a try. Mach3 is just bugging me. I want a very stable cnc controller that should keep working as it is configured (at least for a couple of months) could it be the  noise from the electronics like PSU, stepper drivers etc??

jasminder singh

20
SOMETIMES with new computers they RUN "TOO" FAST and can cause problems with CB and macros running out of sync.

NOW that is just MY opinion from past experiences.  Your mileage may vary due to local variables,

Just something to check, you may have to add some wait states into your macro code now.

(;-) TP

i was just thinking the same. point taken. i will try to put some delays there

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