mutabi

Now now now this is not the case of the disappearing OP haha.. this is still ongoing, but I believe we are making progress. I have not contacted ABB or a supplier (yet) as I am not the decision maker and dont want to step on someones toes so to speak.

So the story continues....on this one particular machine, it had been stalling out pretty regularly. We changed the drive, and motor last week and sure enough last night we had the same issue. So we changed the gearbox (even though it felt/sounded/acted good). The output of the gearbox, is a head that does all the work. At the end of our shift, the setup guys were changing it out at our request. So it will be interesting to see tonight if that makes a difference.

On a sidenote, we have been sending our "bad" drives to a certain repair company, and I have noticed the last 5 or 6 that we have gotten back, run for about a week, and then fault out on overcurrent, even with the motor leads disconnected. So I got to looking through the parameters, and noticed that the control mode was set to scalar. Changed it to DTC and 48 hours later it appears to be still running. This is on one of the other 42 machines.

With regards to the auto tuning, do you mean the ID Run? If so, we generally do ID Runs, albeit Reduced ID runs. I dont think you can do a full ID run when the load is connected to the motor? heck sometimes we cant even do a reduced ID run. It just wont let is, yet when we load the parameters into the drive, she runs. Havent figured that one out yet.

John Valdes

It's about time you told whomever is in charge to get on the phone or you will! It's just plain silly and stupid to not use the free help that is available from either vendor. I have been in positions (when I was young and afraid of what others thought) where I was concerned that calling for help made you look less than qualified. On one occasion, they (night shift) worked on a problem all night. Still not working. I got it fixed the next morning in about 20 minutes after talking to the tech support team for the product. Get some balls and step on some feet if you have too. This has gone on to long. If I were in charge the first thing I would have done is had you call ABB or your motor shop for free help. Why struggle for this long when you could have this corrected before you even posted with this issue.