Danfoss VLT AutomationDrive FC 301 Programming Manual page 316

Integrated Motion Controlle...
Par. 3-20 Preset target positions
Fieldbus reference 1 or pos. REF
Par. 3-16 Reference resource 2
4 4
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.
314
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VLT AutomationDrive FC 301/302
Target position
+
Speed ref.
Acceleration/Deceleration
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Profile generator
Commanded position
Speed
Acceleration
M0013101