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Topics - DEW

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General Mach Discussion / Need Help, Please. Homing issue
« on: April 10, 2020, 05:17:08 PM »
Hi all,

I've been running Mach 3 for better than 10 years on my CNC, which has a CNC4PC C23 BOB with USB Smooth Stepper.
I've not run the machine in many months, but today I decided to fire it up and do a little trouble shooting.
The machine uses two motors to drive the gantry, with Y being the primary axis and A set up as the slave axis.
There are home limit switches on both ends of the gantry, at the Y and A.

I went to the Diagnostics screen to home the machine axes.
I first want to set the homing on the X axis, hit the Ref X button, and that went smoothly.

Then, I hit the button Ref Y button...
I knew that the gantry was a little bit racked, so was expecting the gantry to move forward, hit the Y limit switch, and then continue moving the A side.  What happened was, the Y switch did trigger as expected, but A side stopped.  Then, the Y continued to drive forward until the machined indicated that the limit switch went off.   Broke the limit switch.
I replaced the switch, same results.

Any thoughts?


Pages: 1