Danfoss VLT AutomationDrive FC 302, Руководство по программированию, Страница: 260 / 346

4.3 Control
4.3.1 Control Loops
In positioning and synchronization mode, 2 extra control loops control the motor in addition to the motor controller
running flux control principle, sensorless, or with motor feedback. The position PI controller is the outer loop providing the
setpoint for the speed PID, which provides the reference for the motor controller. For a closed loop, feedback source can be
selected individually for each of 3 controllers.
For sensorless control principle, select [0] Motor feedb. P1-02 in the following parameters:
•
Speed PID: Parameter 7-00 Speed PID Feedback Source .
•
Position PI: Parameter 7-90 Position PI Feedback Source .
With this set-up, both controllers use the motor angle calculated by the motor controller. Illustration 4.6 shows the control
structure and parameters affecting the control behavior:
7-9*
Position PI
Ctrl.
Par. 7-98
Position PI
Feed
Forward
Factor
+
7-0*
Speed PID
Par. 7-08
Speed PID
Accel. Feed
Forward
Factor
+
Commanded
position
Speed
Flux motor
control
Torque
Profile
generator
Par. 7-99 4-1*
Par. 7-90 Position PI
Feedback Source
Par. 7-00 Speed PID
Feedback Source
Par. 1-69
System Inertia
Acceleration
130BE776.10
Illustration 4.6 Positioning and Synchronization Mode
Integrated Motion Controlle...
VLT
®
AutomationDrive FC 301/302
258 Danfoss A/S © 10/2018 All rights reserved. MG33MP02
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