Giant 20' x 3' x 2' router build

[charlieuk]

Ok so we tried the new switch with not much improvement so tony put his oscilloscope on it and basically the large kinco driver for the x axis is putting out a huge amount of noise.

[EddyCurrent]

The input filter in the plugin is used to stop spurious signals induced in the limits wiring acting as though the limit has been triggered when it has not.
If you are not getting these false triggers then the value in the filter setting needs to be as low as possible with zero being the best. Any higher setting is going to ignore the limit signal for a brief period of time and all that is demonstrated in your video.

It may be that noise is a problem once the limit has triggered but the main issue seems to be with resetting the system using some kind of override for the limits, I can't be more specific because I don't have access to a csmio board or plugin.
I do know that if you set up the software limits they should stop the machine before reaching the hardware limits and you should use those all the time, but obviously the hardware limits MUST be working for safety.

Are you using the most recent plugin software ?

[charlieuk]

Just a quick update. We have managed to sort the problem which was noise being created by the x axis drive and the long cable. We first re did some of the earthing on various bits and put them in a nice brass terminal block which made quite a difference. We then swapped the cheap Chinese proximity switches for some made by Schneider which cost as much for one as 10 of the cheap Chinese ones (should have know better). The last step was adding a small resistor on the csmio end and it now all seams happy.we also got the PC water pump running and even on the long pipes it still pushes a nice flow of water. We have also fitted a relay so that it switches on with the spindle and dust extractor. Not quite to sure what is left bar finishing trying to set it up on mach3 and learning how to use mach3 and load g code ect. Again if there is anyone anywhere near Brighton that can help me learn how to use mach 3 that would be a massive help.

[EddyCurrent]

Sounds like a combination of things, pleased to hear it's now working.

[charlieuk]

We'll after a bit of trial and a lot of error I started to cut my first road runner. However the power socket trip out shortly after as I think I had to many things plugged in like a oil heater ect.

I now have two question, not that it worries me for this but would would you do if that happened on a big job?

And second the feed rate is really slow for cutting road runner in foam , I have increased it to max feed rate via the over ride on the main screen but it is still very slow so wondering were I increase it further? In the g code?

[EddyCurrent]

I now have two question, not that it worries me for this but would would you do if that happened on a big job?

The problem is getting back to exactly where you were with regard to X,Y,Z zero positions. This is where Home switches come in, at least you can zero the machine coordinates with these, regarding work coordinates, when I've jogged the machine to where I want work zero X,Y,Z, I make a note of the corresponding machine coordinates from the Mach3 screen so if juice fails I can return to the same place. Maybe there's a better way but that's what I do because it's easy and understandable. You can then run the G code from the start or a line further on.

And second the feed rate is really slow for cutting road runner in foam , I have increased it to max feed rate via the over ride on the main screen but it is still very slow so wondering were I increase it further? In the g code?

Speed for rapids is set in Mach3 motor tunings, then feed speed is set with the F command in the G code, e.g. F800. You can override it while the G code is running using the slider on Mach3 screen.

[charlieuk]

Cool will try adjusting it in the g code many thanks!

[JAZZCNC]

Maybe there's a better way but that's what I do because it's easy and understandable. You can then run the G code from the start or a line further on.

Yes there is and it's really simple to do. Infact it's something you should get in the habbit of doing if long or important jobs just incase power or PC crashes.

Save the work offset. On the Standard Mach 1024 screen set you'll find it OFFSET's Tab on lower right under SAVE WORK OFFSETS.
On Gerry's screen you'll fing it on the small Tab offset's Tab again Save OFFSETS.
If you notice when you close Mach you get the message box "Fixtures Changed" and "Save Fixture" option this is the same as Saving work offsets.
See pics.


Charlie the Road runner file uses Imperial measurements and if using metric units then while Axis scaleing will increase the size it doesn't change the feed rates so you'll need to do this manually by editing G-code.