Z axis has suddenly stopped going forwards <resloved>

[dmbgo]

Re-reading my post in which I said "things are still the same", I was actually saying that there was no change in the homing position for either axis, and that the X axis limit was still tripping whilst running pawn-mm.

[cnckeith]

what make model limit switches are being used? how are they mounted ...photo? etc..
and please always post a fresh report.zip so we can see the latest message log and configuration to help you.

[martyscncgarage]

Yes, please follow this post: viewtopic.php?f=60&t=1043
Include a fresh current report.
Please take the time to do a video showing the machine its limit switch positions and the limit switch themselves and demonstrate your concerns/questions in the video. Upload to YouTube, mark it as unlisted and share the video link here.

Marty

[dmbgo]

The limits are inductive proximity switches. The Z axis limit switch is now on the tailstock, the X axis limit switch is at the positive end of X travel.
I will make a Youtube video later today.

[tblough]

3/ Using the MDI, I command "G0 Z0" and press cycle start, the Z axis then doesn't move, there is no error from the servo drive, but the Z axis DRO updates from 200.00 to 0.000 almost instantly.

What do you have your rapids set at? If the Acorn is showing movement then it is outputting pulses. If the motor is not moving, then you are loosing pulses, or your motor can't move that fast. Do you get the same results if you MDI G1 Z0 F200?

[dmbgo]

Current backup report attached.

[dmbgo]

3/ Using the MDI, I command "G0 Z0" and press cycle start, the Z axis then doesn't move, there is no error from the servo drive, but the Z axis DRO updates from 200.00 to 0.000 almost instantly.

What do you have your rapids set at? If the Acorn is showing movement then it is outputting pulses. If the motor is not moving, then you are loosing pulses, or your motor can't move that fast. Do you get the same results if you MDI G1 Z0 F200?

Hi Tom, nice to hear from you.
I'm not sure what my rapids are set to, what is the quickest way to see?
When I run G1 Z0 F200 using the MDI, it grays out the command and the Z axis doesn't move.

[tblough]

Your rapid for z is currently set to 600mm/min which shouldn't be a problem (these are located under F1 setup/F3 config/F2 Mach/F1 jog. I forgot we were working with a lathe here so MDI G1 G98 Z0 F200.

[martyscncgarage]

When using proximity sensors, the target should approach the face at a right angle, not directly to the sensor.
Not that this is your issue, but its not good practice to set the sensors up the way you did.
I would not have put Z on a movable object like the tailstock. I would have fixed it at the end of the bed with the target attached to the side of the apron so that when it approached the Z+ sensor, it would pass over its face. You can't effectively set and trust any soft limits on the machine with a moveable home switch.

If you take the X+ sensor and turn it 90 degrees so the cross slide passes in front of it, that would be much better.

I watch this thread with interest to see exactly what the issue is. I would have liked to see a video of the issue too.
Marty

[dmbgo]

Your rapid for z is currently set to 600mm/min which shouldn't be a problem (these are located under F1 setup/F3 config/F2 Mach/F1 jog. I forgot we were working with a lathe here so MDI G1 G98 Z0 F200.

When I paste the sequence you posted into the MDI, the Z axis moves to Z0 as expected at a feedrate of 200mm per min
Cheers
Dave