Danfoss VLT AutomationDrive FC 300 Programming Manual page 84

FC 300 Programming Guide
t Qstop s x n s RPM
Par . 3 − 81 =
( . 3 − 19 )
Δ jog ref par
3-82 Quick Stop Ramp Type
Option:
[0] * Linear
[1] S-ramp Const Jerk
[2] S-ramp Const Time
3-83 Quick Stop S-ramp Ratio at Decel. Start
Range:
50 %* [Application dependant]
3-84 Quick Stop S-ramp Ratio at Decel. End
Range:
50 %* [Application dependant]
3.5.9 3-9* Digital Pot.Meter
The digital potentiometer function allows the user to increase or decrease the actual reference by adjusting the set-up of the digital inputs using the
functions Increase , Decrease or Clear
RPM
Function:
Select the ramp type, depending on requirements for acceleration and deceleration. A linear ramp
will give constant acceleration during ramping. An S-ramp will give non-linear acceleration, com-
pensating for jerk in the application.
Function:
Enter the proportion of the total ramp-down time (par. 3-42) where the deceleration torque increa-
ses. The larger the percentage value, the greater the jerk compensation achieved, and thus the
lower the torque jerks in the application.
Function:
Enter the proportion of the total ramp-down time (par. 3-42
deceleration torque decreases. The larger the percentage value, the greater the jerk compensation
achieved, and thus the lower the torque jerks in the application.
. To activate the function, at least one digital input must be set up to
®
MG.33.M8.02 - VLT is a registered Danfoss trademark
3 Parameter descriptions
Ramp 1 Ramp Down Time
) where the
Increase or Decrease .
3
83