Messages

141

General Mach Discussion / Re: is it my computer or is it mach 3

« on: March 01, 2013, 02:41:58 AM »

Can you define "doing things I didn't want it to do" is it the machine, the computer or the G code program. When I first started G code programming I had problems with cutter compensation G41 G42, if you don't cancel it with G40 the machine will go off in different direction to what you asked it to do. Many a component was wrecked or the table marked by cutters doing their own thing.  Remember these codes stay active if you don't insert a G40 at the start or end of you program. These strange moves can also be caused when putting in rads and mirror imaging codes. Jim

142

General Mach Discussion / Re: limit switch triggered

« on: February 24, 2013, 01:41:03 PM »

Cheers  will oder them tomorrow. Jim

143

General Mach Discussion / Re: limit switch triggered

« on: February 24, 2013, 12:49:57 PM »

Hi Hood I was busy looking at my pictures of the spindle drive when I noticed there was another capacitor exactly the same shape and size further down the input line. It measures and looks exactly the same but not burnt like a crisp. Its made by RIFA and has the following markings on it 1000v/500v MP
PME261
40/07/0756
On the top is 0.1uf which is the only thing I can read on the top of the burnt one. Does this sound feasible. I have looked around but cant find any on the net except for these http://www.ebay.co.uk/itm/121068277543?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 but think the 1000pf are too small. Jim

144

General Mach Discussion / Re: limit switch triggered

« on: February 24, 2013, 05:11:26 AM »

Cheers Hood, I think all the other LYNX drives are in museums,did find a picture of one on another CNC site but guess what the same component was burnt out.  Looked on ebay and there are a few components that might be correct, as you said its just getting the right one. Its strange worked most of the day on some mementos for a child's charity with no problem. Then after about 4 hours I heard a buzzing from the motor and it started to rotate. I can live with it till it gets warmer and I don't freeze, I just turn off the machine to change the tooling. Going to go and clean up the workshop this morning so will have another look to see whats written on it, keep you posted. Jim

145

General Mach Discussion / Re: Path to convert to Mach

« on: February 23, 2013, 04:26:07 PM »

Terry just put MFIO-3A in google, its used in lots of applications apart from your machine, you might find some wiring drawings Jim

146

General Mach Discussion / Re: limit switch triggered

« on: February 23, 2013, 12:28:36 PM »

Hi Hood and Chaoticone, well moved the Spindle Drive and solved the trigger problem, but the spindle has started creeping again so going to replace that burnt out RC Network thingy. Its so burnt I cant read the type it is. On a very badly photocopied electrical drawing it says 440G and a symbol of a Thermistor but the written text says its a varistor and along side it is a Capacitor (C6) which I think is OK. any suggestions as to what rating it might be? or do I go by the size and wire spacing on the PB?

147

General Mach Discussion / Re: Mach 3 crash - cant recover

« on: February 23, 2013, 09:06:14 AM »

Hi Danny,  I haven't a solution just a bit of information you might find usefull. I had a Dell computer running my system for years with no problems  then Mach started stopping half way thru a program after a few re-starts it would be fine and work all day. Then the computer would not come on, I summised it was the computers power supply that had failed. Bought a secondhand power supply off ebay, put it in and all run fine for a few days. Then it failed again, Mach started doing funny things like tripping out on limit switches, then the spindle started to go wrong, screen sometimes loaded in 4-3 format then 16-9 without warning. Finally found out it was not the computers power supply but a problem with the mother-board which had developed an intermittent fault which finally shorted and blew the system. So bought a secondhand Dell Optiplex 3300 (with the printer port for connecting to BOB), and all has been fine (fingers crossed) except for a slight spindle drive board problem with a dodgy capacitor I intend to fix asap. Guess what I'm saying it could be a computer failure or hard drive fault, especially as it sometimes loads half a file onto your Mach screen. Hope this helps. Jim UK

148

General Mach Discussion / Re: Path to convert to Mach

« on: February 23, 2013, 02:04:20 AM »

Hi Terry anyone who has viewed my forums knows I'm not an electronics man, but reading this
http://wefixprecix.com/news.html
You should be able to convert your machine. the last couple of lines give you a clue. Good luck. Jim

149

General Mach Discussion / Re: limit switch triggered

« on: February 22, 2013, 02:33:06 PM »

Hi Jonny I first thought that the upgrade was the cause but am moving away from that being the problem, I think my problem is electrical noise. I was advised to download the older version of Mach to see if it solves the problem (its still on the Mach download section of the web pages), but will replace the faulty part on my circuit board spindle drive first I have a feeling that is my problem. As Hood and Chaoticone say it plays havoc with 5v control signals. Keep you posted. Thanks for your thread. Jim

150

General Mach Discussion / Re: limit switch triggered

« on: February 22, 2013, 02:22:46 PM »

Cheers Hood, had the magnifier on it and it says 440G, I will go down and have closer look in the morning, I have noticed a couple of times the spindle seems to be running faster than my M3 programmed speed, but it cuts fine. Thanks mate