Danfoss VLT AutomationDrive FC 301 Programming Manual page 225

Integrated Motion Controlle...
Par. 3-20 Preset target
positions
Fieldbus reference 1 or 2
Par. 3-16 Reference
resource 2
Par. 3-17 Reference
resource 3
Par. 3-03 Default speed
Fieldbus reference 1
Par. 3-15 Reference
resource 1
Ramp settings:
Parameter groups
3-4*–3-7*
Illustration 4.1 Positioning References
In each control cycle (1 ms) the profile generator calculates position, speed, and acceleration required to do the specified
movement. The outputs from the profile generator are used at inputs for the position and speed controller as described in
chapter 4.3.1 Control Loops.
4.2.2 Homing
Homing is required for creating a reference to the physical machine position in closed-loop control principle with
incremental encoder or in sensorless control principle. IMC supports various homing functions with or without a homing
sensor. Select the homing function in parameter 17-80 Homing Function. After selecting a homing function, complete homing
before executing absolute positioning.
4.2.3 Synchronization
In synchronization mode, the frequency converter follows the position of a master signal. The master signal and the offset
between the master and the follower are handled as shown in Illustration 4.2.
MG33MO02
Programming Guide
Target position
+
Speed ref.
Acceleration/Deceleration
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Profile generator
Commanded
position
Speed
Acceleration
4 4
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