Yaskawa Matrix Converter - Manual (Page 185)

6
-20
„ Entering S-Curve Characteristics in the Acceleration and Deceleration Time
The MxC minimizes any sudden jerking or shock when starting and stopping the application by using the S-
curve pattern to smooth out acceleration and deceleration.
Set an S-curve characteristic time for the acceleration start time, deceleration start time, acceleration end time,
and deceleration end time.
Setting Example
The diagram below shows how S-curve characteristics work when changing between forward and reverse.
Fig 6.21 S-Curve Characteristic when Changing Motor Direction
INFO
Set the S-curve characteristic time to lengthen accel/decel time as follows:
Acceleration time = selected acceleration time + (acceleration start time S-curve characteristic time +
acceleration end time S-curve characteristic time) / 2
Deceleration time = selected deceleration time + (deceleration start time S-curve characteristic time +
deceleration end time S-curve characteristic time) / 2
C2-02
C2-01
C2-03 C2-04
C2-02
C2-01
C2-03
C2-04
Forward
Reverse
Output frequency