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This is off the topic of PLC's, but does anyone have experience using motion controllers with hydraulic servo valves? Specifically, we have a press which exerts 8000 tons of force @ a 3 degree toggle cycling 60-65 times a minute. We are flowing 45 gal/min @ 2200psi. The motion controller we are using is an (discontinued) Parker 6270 with a DY45 servo valve. There are two problems I am trying to solve:
1. On initial start-up (begining of the day) the heads tend to 'jump'
sometimes hard and sometimes not so hard, but there is no pattern
to the action.
2. When running, there is a 'fluttering' at the top of the stroke
before it comes to its position.
Like I said, I know this is off topic, but if anyone has an idea where I can find some information I would appreciate it. I can probably give some more information if it would help, this project is a couple of years old, and all of the designs/controls were done before I got here. I was just handed this project and told to 'fix it'. I have tried everything I know and could find.
Thanks in advance, the info and help on this site is outstanding, which is why I have posted this problem.
1. On initial start-up (begining of the day) the heads tend to 'jump'
sometimes hard and sometimes not so hard, but there is no pattern
to the action.
2. When running, there is a 'fluttering' at the top of the stroke
before it comes to its position.
Like I said, I know this is off topic, but if anyone has an idea where I can find some information I would appreciate it. I can probably give some more information if it would help, this project is a couple of years old, and all of the designs/controls were done before I got here. I was just handed this project and told to 'fix it'. I have tried everything I know and could find.
Thanks in advance, the info and help on this site is outstanding, which is why I have posted this problem.