Gentlemen,
Setting up my Conquest T42 (1998) for the very first time, I made the mistake of assuming a software limit would stop the Z travel toward the back of the machine but instead, I heard a noise and got a Torque limiter error. Funny though, the diagnostic bit ZTQLM still shows 1, suggesting it didn't pop? So I am following the Z-axis Zero Return Setup now, but something strange is occurring.
The procedure (condensed)
3. 3" gage block between turret and spindle
4. In relative mode, zero W
5. Move to 10.90" and press home and Z+ (machine homes itself and puts W at 12.5000 ?!)
6. Go back to 3.000
7. If block is a slip fit, you're done.
8. If turret must be moved, record current Diag 301 value
9. Move turret for another slip fit, record new Diag 301 value and subtract this from original. I always get 40,000 as a result
10a If turret moved -Z direction, add value as negative to current 1850 parameter, recycle machine, and perform this procedure again.
10b If turret moved +Z direction, add value as positive to current 1850 parameter, recycle machine, and perform this procedure again.
Here's the strange part. After each homing procedure, the relative position is reset to 12.5000! And of course, if I go back to the instructions which say to go back to 3.000 to see if the block is a slip fit, it never is. It is always 1.4352" further out than it should which means I calculate the offset, add it (negative number) to the grid shift, and start the procedure all over again. Yet I'm on my third try, the grid-shift is getting more and more negative, yet my machine is still off by the same ~1.4352" What gives?
Any of you guys familiar enough with the Z-axis Zero Return Procedure to tell me what I'm doing wrong?
While I wait for your response, I will go back to my machine, fold my arms, and glare at the control until it bursts into flames.
Oh, and one other thing... there are three displays showing position. Absolute, Relative, and an "All" screen that shows relative and "machine" position. Both the absolute and relative screens show (after homing) a position of 12.5000, but the "All" screen shows the "machine" position as 14.0000 which I thought ought to be shown in the absolute screen as well. Is "machine" and "absolute" not the same thing?
Here, the "machine" Z position appears to be correct.
![Click image for larger version.
Name: IMG_2971.JPG
Views: 8
Size: 56.6 KB
ID: 195482]()
The relative position weirdly gets set to 12.5
![Click image for larger version.
Name: IMG_2973.JPG
Views: 8
Size: 64.2 KB
ID: 195483]()
And so does the Absolute!
![Click image for larger version.
Name: IMG_2974.JPG
Views: 9
Size: 70.3 KB
ID: 195484]()
Sorry about the image rotation.
If it's not too much to ask, a quick phone call (pm me your number) might be easier than writing a long essay. I will reciprocate by publishing the results here.
(Thanks, Ox, by the way for your power + CAN + P suggestion in a different thread which got me past the overtravel limit problem I had earlier today.)
I wonder if this is a function of the work shift... going to go check that now.
Torin...
Setting up my Conquest T42 (1998) for the very first time, I made the mistake of assuming a software limit would stop the Z travel toward the back of the machine but instead, I heard a noise and got a Torque limiter error. Funny though, the diagnostic bit ZTQLM still shows 1, suggesting it didn't pop? So I am following the Z-axis Zero Return Setup now, but something strange is occurring.
The procedure (condensed)
3. 3" gage block between turret and spindle
4. In relative mode, zero W
5. Move to 10.90" and press home and Z+ (machine homes itself and puts W at 12.5000 ?!)
6. Go back to 3.000
7. If block is a slip fit, you're done.
8. If turret must be moved, record current Diag 301 value
9. Move turret for another slip fit, record new Diag 301 value and subtract this from original. I always get 40,000 as a result
10a If turret moved -Z direction, add value as negative to current 1850 parameter, recycle machine, and perform this procedure again.
10b If turret moved +Z direction, add value as positive to current 1850 parameter, recycle machine, and perform this procedure again.
Here's the strange part. After each homing procedure, the relative position is reset to 12.5000! And of course, if I go back to the instructions which say to go back to 3.000 to see if the block is a slip fit, it never is. It is always 1.4352" further out than it should which means I calculate the offset, add it (negative number) to the grid shift, and start the procedure all over again. Yet I'm on my third try, the grid-shift is getting more and more negative, yet my machine is still off by the same ~1.4352" What gives?
Any of you guys familiar enough with the Z-axis Zero Return Procedure to tell me what I'm doing wrong?
While I wait for your response, I will go back to my machine, fold my arms, and glare at the control until it bursts into flames.
Oh, and one other thing... there are three displays showing position. Absolute, Relative, and an "All" screen that shows relative and "machine" position. Both the absolute and relative screens show (after homing) a position of 12.5000, but the "All" screen shows the "machine" position as 14.0000 which I thought ought to be shown in the absolute screen as well. Is "machine" and "absolute" not the same thing?
Here, the "machine" Z position appears to be correct.
The relative position weirdly gets set to 12.5
And so does the Absolute!
Sorry about the image rotation.
If it's not too much to ask, a quick phone call (pm me your number) might be easier than writing a long essay. I will reciprocate by publishing the results here.
(Thanks, Ox, by the way for your power + CAN + P suggestion in a different thread which got me past the overtravel limit problem I had earlier today.)
I wonder if this is a function of the work shift... going to go check that now.
Torin...