Control Structure In Flux Sensorless - GE AF-650 GP Design And Installation Manual

Application Set-Up Examples AF-650 GP™ Design and Installation Guide

6.3.2 Control Structure in Flux Sensorless

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Illustration 6.6 Control Structure in Flux Sensorless Open Loop and Closed Loop Configurations
See Active/Inactive Parameters in Different Drive Control Modes in the Programming Guide for an overview of which control
configuration is available, depending on selection of AC motor or PM non-salient motor. In the shown configuration,
parameter H-41 Motor Control Principle is set to [2] Flux Sensorless and parameter H-40 Configuration Mode is set to [0] Speed
open loop. The resulting reference from the reference handling system is fed through the ramp and speed limitations as
determined by the parameter settings indicated.
An estimated speed feedback is generated to the Speed PID to control the output frequency.
The Speed PID must be set with its P, I, and D parameters (parameter group PI-0#).
Select [3] Process in parameter H-40 Configuration Mode to use the process PID control for closed loop control of that is,
speed or pressure in the controlled application. The Process PID parameters are found in parameter group PI-2# and PI-3#.
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