Danfoss VLT AutomationDrive FC 301 Programming Manual page 685

VLT AutomationDrive FC 301/302
Programming Guide
Fieldbus Sync. REF
Par. 3-16 Reference Resource 2
Par. 3-26 Position Offset
Par. 3-02 Offset Speed
Ramp Settings:
Parameter groups 3-4* - 3-7*
Illustration 101: Synchronization References
In each control cycle (1 ms), the profile generator calculates position, speed, and acceleration required to do the specified move-
ment. The outputs from the profile generator are used as inputs for the position and speed controller.
6.2.4 Fieldbus References
Fieldbus references for speed and position are set via the process data (PCD) configuration as shown in the example:
PCD 0 PCD 1
Target Position
Control word
16 bit
Illustration 102: Positioning: Default settings (PCD 1 = Fieldbus REF 1)
PCD 0 PCD 1
Speed Reference
Control word
+/- 4000Hex
Illustration 103: Positioning: PCD write configuration PCD 1 = Fieldbus REF 1, PCD 2 and 3 = Fieldbus Pos REF
PCD 0 PCD 1
Master position
Control word
Illustration 104: Synchronizing: PCD write configuration PCD 1 = Fieldbus Sync REF
Danfoss A/S © 2022.12
Master position
Position ref.
Speed ref.
Acceleration/Deceleration
PCD 2 PCD 3 PCD X
PCD 2 PCD 3 PCD X
Target Position
32 bit
PCD 2 PCD 3 PCD X
Integrated Motion Controller
Profile generator
Commanded position
Synchronization:
Par. 3-22 - 3-25,
7-97,7-99
Offset handling
AU275636650261en-000101 / 130R0334 | 685
Speed
Acceleration