3.2.6 Control Structure in Flux with Motor Feedback130BA054.11P 3-** P 7-0*P 7-2*+_+_P 7-20 Process feedback1 sourceP 7-22 Process feedback2 sourceP 4-11 Motor speedlow limit (RPM)P 4-12 Motor speedlow limit (Hz)P 4-13 Motor speedhigh limit (RPM)P 4-14 Motor speedhigh limit (Hz)HighLowRef. ProcessPIDSpeedPIDRampP 7-00PID sourceMotorcontroller-f max.+f max.P 4-19Max. outputfreq.P 1-00Config. modeP 1-00Config. modeTorqueIllustration 3.5 Control Structure in Flux with Motor Feedback Configuration (only available in FC 302)See the chapter Active/Inactive Parameters in Different Drive Control Modes in the Programming Guide for an overview ofwhich control configuration is available, depending on selection of AC motor or PM Non salient motor. In the shown config-uration, 1-01 Motor Control Principle is set to [3] Flux w motor feedb and 1-00 Configuration Mode is set to [1] Speed closedloop.The motor control in this configuration relies on a feedback signal from an encoder mounted directly on the motor (set in1-02 Flux Motor Feedback Source).Select [1] Speed closed loop in 1-00 Configuration Mode to use the resulting reference as an input for the Speed PID control.The Speed PID control parameters are located in parameter group 7-0*.Select [2] Torque in 1-00 Configuration Mode to use the resulting reference directly as a torque reference. Torque control canonly be selected in the Flux with motor feedback (1-01 Motor Control Principle) configuration. When this mode has beenselected, the reference will use the Nm unit. It requires no torque feedback, since the actual torque is calculated on thebasis of the current measurement of the frequency converter.Select [3] Process in 1-00 Configuration Mode to use the process PID control for closed loop control of e.g. speed or a processvariable in the controlled application.Introduction VLT® AutomationDrive FC 300 Design Guide, 0.25-75 kW20 MG33BE02 - VLT® is a registered Danfoss trademark33RSPSupply - 1-888-532-2706 - www.RSPSupply.comhttp://www.RSPSupply.com/p-21462-Danfoss-131B8966-VLT-Automation-VT-Drive-VFD-FC301-230V-5-HP.aspx
