Messages

21

General Mach Discussion / Re: Losing Zero

« on: January 18, 2016, 11:23:03 AM »

Hi Russ, hope your feeling better?

Now these look like steppers and not servos, can't tell from the pics what size they are so do a quick measure of the front mounting plate and see what size you get, measure in imperial.............2.3" = NEMA 23, 3.4" = NEMA 34 and 4.2" = NEMA 42. We can then take it from there.

22

General Mach Discussion / Re: VFD Signal Issues

« on: January 12, 2016, 02:18:58 PM »

Think you'll need to match it to your VFD, most CNC suppliers will have them for £50 or there abouts.

23

General Mach Discussion / Re: VFD Signal Issues

« on: January 11, 2016, 10:59:49 PM »

Have you an EMI filter on your invertor, essential to stop noise............?

24

General Mach Discussion / Re: Limit switch issues

« on: December 28, 2015, 09:17:03 AM »

LOL - you're both right of course - but given the way this thread's gone so far, aren't you both making the rather rash assumption that Mike's view of Ohm's Law is the same as everyone else's? 

And what has Ohms law got to do with it, or any law come to that. The guy is/was having difficulties, yes the thread went on and on, but it got resolved. The fact that a global moderator has to ridicule or belittle someone baffles me? Or is it ok for you to do that?

25

General Mach Discussion / Re: Limit switch issues

« on: December 28, 2015, 07:10:24 AM »

It suprising how often the smallesr simplest things get over looked and cause hours of untold grief. The amount of times i get called to breakdowns (maintenance technician) were, after asking the machine op is it switched or the likes, i find that it was not plugged in,  or switched on or the e stop was in, after showing the op the error you get replies like, well it was plugged in yesterday, or i didnt think to look...............ARGHHHHHHH
Never overlook the simplest of things. Thats all i ask.

26

General Mach Discussion / Re: Limit switch issues

« on: December 28, 2015, 05:24:50 AM »

Glad you are making progress Mike.

OK , you remember the little diagram I posted about limit switches, put one probe of your multimeter on one cable and the other probe on the other end of the cable and press each switch in turn, each time you press a switch it should read zero, and therefore it should beep or read 100% when no switch is pressed indicating a complete circuit. Is that how you have it? If not check each limit switch, it should be moulded into the casing what each leg is - COM = common, N/C = normally closed and N/O = normally open.
Lets make sure this circuit is working correctly before we jump into settings.

27

General Mach Discussion / Re: Limit switch issues

« on: December 27, 2015, 01:13:46 PM »

Agree, electronics look fine, drivers and steppers fine, Mach3 fine but what it is all connected to is garbage, unfortunate but true.
continue to get the electonics and mach3 sorted and you'll be fine with the rest.

28

General Mach Discussion / Re: Limit switch issues

« on: December 27, 2015, 12:47:45 PM »

N/C or normally closed means just that, in a dormant state the switch is closed, therefore makes the circuit, visa versa N/O or normally open means the exact opposite.
High looks for the signal voltage, in this case +5vdc, Low means the opposite it looks for 0v or in this case a switch going fron N/C to N/O - your limit switch being triggered.

No magic smoke will get out setting them high or low, it is just a way of stating what the pins are looking for.

29

General Mach Discussion / Re: Limit switch issues

« on: December 27, 2015, 12:42:37 PM »

It might be wiser to bite the bullet and get rid of it, start afresh with a more robust and modern machine, there seems to be more and more problems getting uncovered that are going to bite your ass the more you try to improve things.

30

General Mach Discussion / Re: Limit switch issues

« on: December 27, 2015, 12:08:41 PM »

If I snap a tool during a run, I simply stop the program, note what line Gcode the break happened, press ref home all, fit a new tool, re zero the tool height, set Gcode to the line of Gcode needed and press run from here, takes about 5 minutes and am back up and running with no problem. As long as Mach3 has all the info it will do want you want it to.