Topics

1

General Mach Discussion / no movement on y axis

« on: November 20, 2013, 09:34:00 AM »

This is my first attempt to start a new thread on this website.  Please excuse my blundering if this a mistake.
I have been using a gecko G540 on a CNC router for over a year. We recently changed the table from a 4' x 4' to a 5' x 10' table. Then we started to experience recurring faults and E-stop reset messages on Mach3. Now we get a reset message occasionally when we move the Y axis. The X and Z axes work fine. The G540 red fault light comes on and the power green light goes off when movement  stops along the Y axis as the result of an e-stop. We also experience an unusual phenomenon during a rapids command.  When executing the following:
G00X10.8125Y78.5000Z0.2000
The router moves the correct distance along the x axis, but makes no movement along the y axis.  The router also seems to drop at a slow rate along the z axis while moving in along the x axis.
We eliminated the limit switches as the problem by shorting them out during a trial run with no perceptible performance change.
Please provide any troubleshooting advice you can.

2

General Mach Discussion / z-axis will not back off home switch

« on: July 13, 2012, 11:29:56 AM »

We have received & installed all of the physical equipment on our Joe's R&P CNC Router and have everything working with one exception. All of the limit switches (five of them-X,Y & Z Home, x++ & y++,no z++ switch) are hooked up in series and three of them also duplicate home switches. I'm using Mach3. I cannot get the system to home. The z axis closes the limit switch at the top (also the z axis home) but will not back off the switch. I have read the instructions thoroughly and have tried every variation I can think of to no avail. The homing & limit pins are set, home neg is not enabled and auto zero is. Slow zone is set to .125" & I’ve varied “home off” from .125 to 2, both positive & negative. None of this works. Can someone give me or direct me to help on this item. I think I'm ready to go when this is solved. I’m very new at CNC work and also at using forms.  This, in fact, is my first attempted  post, so please excuse any errors.  I will try to attach my .xml file.