Par
. 3 − 81 =
t
Qstop
s
x
n
s
RPM
Δ
jog
ref
(
par
. 3 − 19
)
RPM
3-82 Quick Stop Ramp Type
Option: 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.
[0] * Linear
[1] S-ramp Const Jerk
[2] S-ramp Const Time
3-83 Quick Stop S-ramp Ratio at Decel. Start
Range: Function:
50 %* [Application dependant] 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.
3-84 Quick Stop S-ramp Ratio at Decel. End
Range: Function:
50 %* [Application dependant] Enter the proportion of the total ramp-down time (par. 3-42
Ramp 1 Ramp Down Time
) where the
deceleration torque decreases. The larger the percentage value, the greater the jerk compensation
achieved, and thus the lower the torque jerks in the application.
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
. To activate the function, at least one digital input must be set up to
Increase
or
Decrease
.
FC 300 Programming Guide 3 Parameter descriptions
MG.33.M8.02 - VLT
®
is a registered Danfoss trademark
83
3