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« on: June 17, 2013, 10:20:43 PM »
Start by having the velocity set to a low number, say 10 ipm and the accel = 1.
Now just keep doubling the the vel until they skip. Say they skip at 120 ipm, then somewhere between
60 and 120 is the max velocity. So try 100, if they don't skip then leave it at that setting. Now at 100 increase the accel to 2 and start doubling it until they skip. Say it skips at accel =6, then reduce the vel to say 80 and try.
You will find a max velocity and accel value quite quickly.
Whatever that value is that they skip at some max vel and accel reduce the velocity by maybe 30%. Now you
do some testing while machining and over time you will have a reliable value for vel and accel.
Just trial and error. Even if the values are calculated you still need to test and confirm.
Of course having a motor curve always helps.
What you really want is power and that is speed x torque.
If you can set the drives for microstepping and greater than 10 is of no value.
BTW, make sure the steps per unit are correct.
RICH