3.2.3 Control Structure in Advanced Vector Control
Control structure in Advanced Vector Control open loop and closed loop configurations:
In the configuration shown in the illustration above, par. H-41 Motor Control Principle is set to “Advanced Vector Control [1]” and par. H-40 Configuration Mode is
set to “Speed open loop [0]”. The resulting reference from the reference handling system is received and fed through the ramp limitation and speed limitation
before being sent to the motor control. The output of the motor control is then limited by the maximum frequency limit.
If par. H-40 Configuration Mode is set to “Speed closed loop [1]” the resulting reference will be passed from the ramp limitation and speed limitation into a speed
PID control. The Speed PID control parameters are located in the par. group PI-0#. The resulting reference from the Speed PID control is sent to the motor control
limited by the frequency limit.
Select “Process [3]” in par. H-40 Configuration Mode to use the process PID control for closed loop control of e.g. speed or pressure in the controlled application.
The Process PID parameters are located in par. group PI-2# and PI-3#.
AF-650 GP Design Guide
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