Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: Buchanan on October 15, 2015, 08:14:23 PM

Title: Mach 3 Driven Wire Straightener Stopping Issue
Post by: Buchanan on October 15, 2015, 08:14:23 PM

Hello,

We are using Mach 3 with a looped G-code program to  operate a two axis sequence continuously for 8 hour stretches.

We have an issue where the Mach 3 stops every 45 - 60 minutes. The reset button has to be pressed and it starts up fine again.

It is happening more and more frequently.


Be glad of anybody's comments.

Thanks.

Title: Re: Mach 3 Driven Wire Straightener Stopping Issue
Post by: Overloaded on October 15, 2015, 08:48:23 PM

Is there anything reported in the STATUS line ?

Watchdog ? ?  turn it off.
E-Stop ? ? ?   Noise ? ? ?  correct/eliminate it.

Title: Re: Mach 3 Driven Wire Straightener Stopping Issue
Post by: Buchanan on October 18, 2015, 07:16:23 PM

It just says 'External Emergency Stop requested'  or something close to that.

Title: Re: Mach 3 Driven Wire Straightener Stopping Issue
Post by: Tweakie.CNC on October 19, 2015, 01:42:31 AM

Try increasing the Debounce Interval (Config. / General Config.) to 2000 or so.

If this reduces or cures the problem then you need to look for the source of the problem which could well be electrical noise pickup from your Inputs wiring. Check that good quality, shielded, cable is being used and that the shield is connected to Earth at the controller end only - also check the quality of your switches and perhaps fit a 0.1uF miniature capacitor between each used Input and Earth at the controller end.

Also, as Russ said, make sure 'Use WatchDogs' is unchecked (Config. / General Config.)

Hope this helps.

Tweakie.

Title: Re: Mach 3 Driven Wire Straightener Stopping Issue
Post by: Buchanan on October 22, 2015, 03:31:42 AM

Tweekie.

Thank you. we have had the best run ever. All i did was to increase the debounce as you said, the'use watchdogs ' was unchecked.

I have found the help here wonderful.

thanks again.

Buchanan.

Title: Re: Mach 3 Driven Wire Straightener Stopping Issue
Post by: Tweakie.CNC on October 22, 2015, 03:47:36 AM

I am pleased you have got it sorted.

Please remember that increasing the Debounce is a fix a bit like a sticky plaster you really should find the root cause and cure that.

Tweakie.