KEB COMBIVERT F5 Reference Manual page 172

LS - Speed Profile Parameters
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172
In general, higher values result in a hard/fast profile, while lower values give
softer, slower transitions.
Higher
Values
Start Jerk
Empirical values:
2.00...3.00 for retirement homes, hospitals, apartment buildings
3.00...4.50 for office buildings, banks etc.
Each jerk rate will have a calculated minimum value depending on the
value of the rate of acceleration or deceleration that the jerk must work
with. Therefore the minimum jerk value is limited by the actual adjusted
value of the acceleration or deceleration. If a lower jerk value is required,
you must first reduce the rate of acceleration or deceleration.
For externally generated speed profile control modes, analog and serial
speed control modes (US04 Control Type = Bi-polar Analog Speed (3),
Absolute Analog Speed (2), Serial Speed DIN66019 Service 49 (4), Serial
Speed DIN66019 Service 50 (5)), the profile is generated by the controller
and the rates set in the drive will have no effect (except when ESD , ETS,
or NTS functions are activated) unless LS15 = Internal Profile.
Correction Speeds
In addition to profile rate settings, speed profiles High Speed, Inspection,
Intermediate Speeds 1, 2, 3 will have an additional 'correction' parameter
associated with each. The correction parameters are used to compensate
leveling distance, when decelerating from the corresponding speed, by
the amount adjusted. Refer to LS27 High Speed Correction for additional
information.
Accel Jerk
Lower
Values
Acceleration