I have the 4848 pro machine with EX control and servo motors. I also have the in-bed 4th axis rotary with the servo motor.
When I received the machine and set it up back in January I was using the Avid profile 5.18, I believe that was the latest. I have since moved to 5.22 and now 5.24.
When I homed the machine in the past, the gantry would home, then the rotary would home by spinning approx. 1 turn the back off a bit leaving the chuck jaws parallel/perpendicular to the spoil board, or at least visually close.
After installing the 5.22 profile, I noticed that when homing, the rotary would make the 1 revolution, but not turn back to a home position. After some time, it started working again. I have since installed the 5.24 profile and it is now again not backing to a home position like it originally did. I have noticed that I can, with some effort, manually turn the chuck back.
I haven’t used the rotary other than a quick test of it after setting up the machine originally, but this is something I noticed and wondered if anyone else has seen this behavior.
Go into the wizard, go under the rotary settings (under accessories) and set it to 3 axis mode only. Write the settings and then follow the instructions on screen for restarting the controls.
Power CNC12 back up, but don’t bother homing. Then go into the wizard again and select 4 axis/rotary mode and make sure you get your rotary direction correct. Write those settings and follow the on screen instructions for restarting your control. If it still doesn’t work after that let me know.
I followed the above instructions, a couple of times, and no change. The rotary rotates counter clockwise as looking at the chuck until the bolt flag trips the sensor, but it doesn’t back up like it used to.
I found a thread on here of the similar problem with an ESS system from Bstanga where the solution was to reseat the ESS wire plugs and the BOB plugs (what ever BOB is). Based on this I opened the control panel and wiggled all the connections a bit and tried again with no success.
Historically when I noticed this issue before, it seemed to correct itself from time to time. I assume it will again, but can’t find the source of the problem.
As additional info. When the bolt flag in the chuck comes by the sensor the sensor light comes on, then turns off when the chuck stops. As noted originally, I can manually turn the chuck back (clockwise)with some effort but I can’t move it any further forward (counter clockwise). When I turn it back manually the sensor light comes back on. I can only turn it back so far then it is locked and won’t turn either way manually.
One more observation is that when the rotary zero’s, the machine coordinates says that A is +0.000. When I manually rotate the chuck back until it stops, the machine coordinates don’t change and still shows A +0.000.
Wait… this sounds like it’s homing fine.. What’s the actual issue here? After homing is A not going to zero? If that’s the case than you probably altered your A zeroing.
Look in Set Part Zeros>WCS Table and see what A is set to, if it’s anything other than 0 when you’re at machine zero your A will say something other than zero
I just checked and A is zero on both machine coordinates on the main screen and in the WCS table.
The rotary is homing, but previously when homing the chuck would rotate counter clockwise at a medium pace until it tripped the sensor, then slowly go back the other way and stop. This stopping point put the jaws of the chuck visually perpendicular/vertical to the spoilboard. When it stopped it was locked in place, and I can’t move it with my hands.
Current state the rotary homes by rotating counter clockwise until it trips the sensor, then stops and doesn’t move slowly back the other direction. I can then move the chuck manually, with my hands clockwise, like it used to do automatically, until is stops approx. where it used to. But I can’t turn it by hand counter clockwise. Then the servo is locked and cant be rotated by hand. When I rotate it by hand, the degree of A does not change.
Once the rotary is homed and A shows +0.000 I wouldn’t think I should be able to turn it by hand. When I do turn it by hand once it hits the sensor again it locks in place and I can’t physically turn it any further either direction.
As stated earlier, I noticed this first after installing 5.22, but it eventually started working again. The issue came up again after updating to 5.24.
The issue seems to be similar in nature to this post, but mine has the EX controller, not ESS.
I was fiddling with it early this morning by just homing it over and over and I’m getting it to work sometimes and not others. I captured some video on my phone of both instances. Is there a way I can share these videos with you to show you what is going on?
Check those set screws. You should NOT be able to move the chuck with the servo motors are on. If you can there’s a physical problem with the rotary, not a software problem.