Chapter 6  Control Mode of Operation  ASDA-A2 
6-26     Revision February, 2017 
6.3.3  Smooth Speed Command 
S-curve Filter 
During the process of acceleration or deceleration, S-curve filter applies the program of three-stage 
acceleration curve for smoothing the motion command, which generates the continuous 
acceleration. It is for avoiding the jerk (the differentiation of acceleration) came from the sudden 
command change and indirectly causes the resonance and noise. Users can use acceleration 
constant of S-curve (TACC) to adjust the slope changed by acceleration, deceleration constant of 
S-curve (TDEC) to adjust the slope changed by deceleration and acceleration / deceleration 
constant of S-curve (TSL) to improve the status of motor activation and stop. The calculation of the 
time to complete the command is provided. 
 
 
Related parameters: 
P1-34    TACC  Acceleration Constant of S-Curve 
Address: 0144H 
0145H 
 
Operational 
Interface: 
Panel / Software  Communication 
Related Section: 
6.3.3 
 
Default: 
200 
 
Control 
Mode: 
S 
 
Unit: 
ms 
 
Range: 
1 ~ 65500 
 
Data Size: 
16-bit 
 
Format: 
Decimal