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michael G

trouble with Servo tuning MR-J3

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I have two problems - firstly tuning a MR-J3-70B on a belt system I get smooth movement with no overshoot - but the movement has a huge droop Remove the Droop using 100% Velocity Feed forward and I get overshoot (Accel /Decel time target is 200 ms from 5000 rpm) I have looked at the vibration filters and have not have much success How do I remove the droop yet still have no overshoot? Any pointers - what parameters to look at Been bashing my head on this for a couple of days Secondly A MR-MQ100 that has to follow a synchronous encoder reference closely What are the parameters to look at - does anyone have a mechanical program that does encoder speed dependent phase advance?

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