Hello. I'm having a problem with my R2E3. It has the BOSS 8 control. I turn on the machine and it powers up fine, no errors. I enable the drives and they turn on. But my X-axis will VERY slowly move or drift by itself. Now when I go to home the machine the Z-axis homes first no problem, but then the X-axis will rapid about 1-inch towards its home position and then the drives will kick out and I get an "axis limit" error.
Every time I enable the drives my X-axis will drift really slow by itself. I can move it in JOG mode in both directions before executing the machine HOME. But whether I press the + or - direction it will rapid fast in that direction about 1" and then the drives kick out and I will get the "axis limit" error.
The machine had its initial problem in the middle of running a program. The x-axis did a programed rapid move and then the drives kicked out, spindle turned off, and I had an "axis limit" error. Now I've had this x-axis drift problem ever since.
I cleaned the connectors on the NC400 boards. I tried swapping the controllers but that didn't make a difference.
I've had this machine for 3 years now and this is probably the first problem I've had with it.
Anyone have any suggestions?
If an axis drifts when powered it has an open position loop. This could be the encoder, or cable, or a board.
Swap the motor with the Y axis and see if the problem follows the motor.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)