Danfoss VLT AutomationDrive FC 301 Programming Manual page 806

Programming Guide | VLT® AutomationDrive FC 301/FC 302
PCD 0 PCD 1
Control word Master position
Figure 102: Synchronizing: PCD write configuration PCD 1 = Fieldbus Sync REF
Control
7.3
Control Loops
7.3.1
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.
l
Position PI: Parameter 7-90 Position PI Feedback Source.
l
With this set-up, both controllers use the motor angle calculated by the motor controller. See
parameters affecting the control behavior.
Par.7-90 Position PI
Feedback Source
Profile
Generator
7-9*
Commanded
Position
Position
PI Ctrl.
Ramp
Par. 7-98
Position
Speed
PI
Feed
Figure 103: Positioning and Synchronization Mode
Control and Status Signals
7.3.2
IMC control and status signals are available I/O bits and fieldbus bits.
806 | © 2024.09
PCD 2 PCD 3 PCD X
Par. 7-99
Accel. limit
+
Par.1-69 System Inertia
Acceleration
Figure 103
Par. 7-00 Speed PID
Feedback Source
Par. 4-1*
Speed Limit
7-0*
Maximum
Speed PID
Minimum
Par. 7-08
Speed PID
Accel. Feed forward
factor
Torque
Integrated Motion Controller
for control structure and
Flux motor
control
+
AU275636650261en-003201 / 130R0334