Dual Loop Basics

Dual Loop control of an axis in NT products is more flexible compared to previous ACS Motion Control products. The user can assign feedbacks from various channels or from an analog input to the axis, with the constraint that the axis and channels must relate to the same Servo Processor.

In Dual Loop the control of the axis is based on at least two feedback sources:

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Load position feedback - used as input for the Position Loop.

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Motor position feedback - used as input for the Velocity Loop and for the motor’s Commutation as well.

provides a block diagram showing the various elements in a dual loop control system.