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.
Electronics Forum | Thu Aug 25 07:43:24 EDT 2016 | claudea2
We have been having a recurring error on one of our Quad 4Cs. When it picks up the first of 8 47uF SMT capacitor it stops with a limit error. If we do 2 consecutive function 30s, the problem goes away until the next board. The first function 30 re
Electronics Forum | Thu Sep 08 15:45:21 EDT 2016 | claudea2
Thanks Bob, I will change the z-rod just to make sure. It is a tall part read at 180. The nozzle height bugs me because we have 3 machines and the first one has a nozzle height of 238 while the 2 others around 200. I am thinking this parameter may ad
Electronics Forum | Thu Aug 25 08:22:41 EDT 2016 | bobpan
If I have to guess then I would say the machine is first picking up a larger nozzle to pick up this part.....the nozzle is not seating on the z-rod correctly and causing a problem. Check to make sure the nozzle is being mounted correctly. You may als
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