Electronics Forum | Mon Sep 30 16:36:00 EDT 2013 | richardconnell
I have a Universal Instruments Corporation TAB Bonder. Oldish machine. Initial fault on machine : - "Axis Head 1 Z DAC Limit error during move absolute command" Other fault seen after we reset power, Zeroed axis etc. - Axis Head 1 - Z error not re
Electronics Forum | Tue Oct 01 18:44:24 EDT 2013 | richardconnell
Hi, I have limited capability on the Z axis. The axis will home to the mechanical switch limit and then drop to a point which I asssume to be the fiorst zero point below the mechanical switch limit. Then it gives the error. There is power to the mo
Electronics Forum | Tue Oct 01 17:56:10 EDT 2013 | swag
I'd take a look at the power supply for the failed axis and see if it's still working. I've also seen encoders fail on motors but it's rare in my experience. Usually it's a power issue.
Electronics Forum | Mon Apr 11 06:54:03 EDT 2011 | mosborne1
Wipe off your linear scales and clean your quadalign lense.
Electronics Forum | Mon Apr 11 15:57:25 EDT 2011 | bobpan
If the feeders that you are having problems with have tall parts in them.....and these are the ones the machine is stopping on.....check to see that you are not scanning higher than what your function 30 nozzle height is. In other words...if your fun
Electronics Forum | Mon Apr 11 08:27:10 EDT 2011 | leemeyer
I have had similar problems before where the machine will intermittently stop with a limit error. Reset the machine and away it goes. Replacing the ribbon cable that runs from the head (37 pin D-sub)has solved this problem. This cable gets flexed a l
Electronics Forum | Fri Apr 08 21:39:17 EDT 2011 | jimlas53
Hi, We have a Quad IVc set up with all picks, placements, and sequence working. I have managed to get through several passes with some pain, mainly from SOT-23 parts, but it is getting better. On occasion, when picking from one of three feeders loc
Electronics Forum | Tue Apr 19 14:58:05 EDT 2011 | rdoss
The ribbon cable would be my guess. I ran a IVc for about 3 years and we use to have to change out our cable at least once per year. I also wanted to add that you can contact Precision Placement Machines (PPM) for parts and service. We use to use
Electronics Forum | Thu Sep 08 13:07:18 EDT 2016 | claudea2
Hello Bob, we changed the nozzle z parameter until we got limit errors and backed up 1 mil. There was a slight reduction in the limit errors on the pickup of the component but it is still a problem. With the mod code we adjust the soft z height to ab
Electronics Forum | Thu Sep 08 15:22:32 EDT 2016 | bobpan
If its a tall part and you are trying to scan it lower than 200 or so...you can have this problem (limit error). Thinking of things to look at.....Is your z-rod spring sticking? Push up on it and it should spring back with NO hesitation...if it does.
