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Open motor servo loop in motion program
I would have suggested the same approach as Jeff did, which technically keeps the loop closed, but effectively disables it.

Note that you cannot use our automatic brake control function for this, as that function operates only on true disabling and enabling of the motor.

Our own "in-phase" PWM amplifiers yield no current ripple in the motor at zero command, and I believe that most 3-phase brushless motor amps are in-phase like this. (Many cheap brush motor and stepper motor drives use the simpler "anti-phase" PWM, which has a lot of current ripple at zero command.)

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RE: Open motor servo loop in motion program - curtwilson - 11-07-2014, 10:23 AM

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