Messages

1

General Mach Discussion / Re: Limit Switch Trips

« on: March 14, 2011, 09:18:07 AM »

Feed speeds now adjusted down quite a bit and machine is now milling quite happily.
Hopefully my issues are now solved until find some new ones.

Thanks to for the assistance

Paul

2

General Mach Discussion / Re: Limit Switch Trips

« on: March 14, 2011, 07:33:26 AM »

Overloaded,

My set up has encoders and feedback from the stepper motors to the controller.
I will go have a look at the config

cheers

Paul

3

General Mach Discussion / Re: Limit Switch Trips

« on: March 14, 2011, 07:07:49 AM »

Tweakie

I am on to a solution now and its not electrical noise as such.
At fast traverse there would appear to be a slight tight spot on the X axis which is causing an error signal on the closed loop controller. Turning the Jog speed down and running the table around a bit has got some oil into to the right places and reduced the trip frequency.

I am currently trying to figure out how to alter the fast traverse speeds [told you I was green at this] to something a bit slower so the stepper motors aren't working as hard. Have opened some configuration windows and am scared to change anything.

Paul

4

General Mach Discussion / Re: Limit Switch Trips

« on: March 14, 2011, 06:43:58 AM »

Hi Tweakie

No there are no other inputs and the emergency stop is a very mechanical big red stop button not likely to be a generator of electrical noise.
Its been suggested to me that it might physically have become a little tight and that i should oil/clean the slideways and screws as well as turning down the jog speed so I'm off to try that now

Paul

5

General Mach Discussion / Limit Switch Trips

« on: March 14, 2011, 06:06:21 AM »

I am a very raw user of Mach3 having had it set up on a Taig Mill for me and up until now I have just run wizards and G code created elsewhere so whilst  I have used it for awhile I don't know my way round its insides very well hence what may be to others a very obvious question.......

My machine keeps tripping out occassionally when fast traversing, usually but not always, in the X axis. The screen says "limit swtich tripped".  It will do this whether its under control of some G code program or if I am fast traversing it with the shift/arrow keys on the keyboard. There seems to be some random element to it in that it doesn't always do it as if it could be down to something like it all being too hot or too cold. It has been milling most of the last few days.

My question is prompted now because its being a particular pain this morning and won't traverse at all in the X axis at speed tripping the instant it starts to move.

There are no physical limit switches so what is tripping and why. Is it traversing too fast? (how to you alter the traverse speed?). The stepper motor apparently have feedback on them so would it be accelerating to fast for the feedback to keep up or something? It could possibly be an acceleration/speed issue because this morning sulk seems to trip as it starts to fast traverse.  I have checked that its in mid travel of the table so its not physically hitting anything and xyz readouts are all within working range.

Grateful for any suggestions, meanwhile I'll be scouring the manual as, typically, its chosen to misbehave with an urgent job on the table

Thanks in anticipation

Paul Martin