Danfoss VLT AutomationDrive FC 301 Programming Manual page 165

Programming Guide | VLT® AutomationDrive FC 301/FC 302
Speed
Ramp (X) S-Ramp
Ratio at Accel.End
Linear
Ramp (X)
S-Ramp
Jerk compensated
Ratio at
Accel.End
Ramp (X)
Up Time
Figure 56: Non-linear Ramping Times
3-40 Ramp 1 Type
Default value:
[1] Linear
Setup: All setups
Data type:
Uint8
If [1] S-ramp Const Jerk is selected and the reference during ramping is changed, the ramp time may be prolonged to realize a
jerk-free movement, which may result in a longer start or stop time. Extra adjustment of the S-ramp ratios or switching initiators
may be necessary.
Select the ramp type, depending on requirements for acceleration/deceleration. A linear ramp gives constant acceleration during
ramping. An S-ramp gives non-linear acceleration, compensating for jerk in the application.
Option Name
[0]* Linear
[1] S-ramp Const Jerk
[2] S-ramp Const Time
[4] Linear anti-sway
3-41 Ramp 1 Ramp Up Time
Default value:
Size related
© 2024.09
Ramp (X) S-Ramp
Ratio at Dec.End
Ramp (X)
S-Ramp
Ratio at
Dec.End
Ramp (X)
Down Time
Parameter type:
Conversion index:
Change during operation:
NOTICE
Description
Acceleration with lowest possible jerk.
S-ramp based on the values set in parameter 3-41 Ramp 1 Ramp
Up Time and parameter 3-42 Ramp 1 Ramp Down Time.
Anti-sway ramp for smooth starting and stopping without
swinging for cranes with hanging load. With the anti-sway ramp,
the ramp time is the time it takes to accelerate/decelerate from
actual speed to the set speed reference. In addition to the ramp
time settings, other required settings for the anti-sway ramp are
found in parameter group 24-7* Anti-Sway Ramp.
Parameter type:
NOTICE
This option is only available in software version 48.96 or
newer.
AU275636650261en-003201 / 130R0334 |
Parameter Descriptions
Option
–
True
Range, 0.01 - 3600 s
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