Control Structure In Flux With Motor Feedback - Danfoss VLT AutomationDrive FC 300 Design Manual

FC 300 Design Guide
Introduction to FC 300

Control Structure in Flux with Motor Feedback

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Control structure in Flux with motor feedback configuration (only available in FC 302):
In the shown configuration, par. 1-01 Motor Control Principle is set to "Flux w motor feedb
[3]" and par. 1-00 is set to "Speed closed loop [1]".
The motor control in this configuration relies on a feedback signal from an encoder mounted
directly on the motor (set in par. 1-02 Motor Shaft Encoder Source).
Select "Speed closed loop [1]" in par. 1-00 to use the resulting reference as an input for the Speed
PID control. The Speed PID control parameters are located in par. group 7-0*.
Select "Torque [2]" in par. 1-00 to use the resulting reference directly as a torque reference. Torque control
can only be selected in the Flux with motor feedback (par. 1-01 Motor Control Principle) configuration. When
this mode has been selected, the reference will use the Nm unit. It requires no torque feedback, since the
torque is calculated on the basis of the current measurement of the frequency converter. All parameters are
selected automatically on the basis of the set motor parameters in connection with torque control.
Select "Process [3]" in par. 1-00 to use the process PID control for closed loop control of
e.g. speed or a process variable in the controlled application.
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