Mitsubishi Electronics MR-MC240 ユーザーズマニュアル

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6. APPLICATION FUNCTIONS 
 
6.3.4 S-curve acceleration/deceleration (Sine acceleration/deceleration) 
This is a method where acceleration/deceleration is performed gradually based on the Sin-curve. To make the 
S-curve acceleration/deceleration valid, set the S-curve ratio (1 to 100%). At this time, the acceleration time 
and deceleration time is the same as in the case of the linear acceleration/deceleration. 
 
POINT 
 
When using the S-curve acceleration/deceleration for JOG operation, 
incremental feed operation and home position return, set the S-curve ratio in 
S-curve ratio (parameter No.0221). For automatic operation and linear 
interpolation operation, set the S-curve ratio in the point table. 
 
API LIBRARY  
When using the S-curve acceleration/deceleration for JOG operation, 
incremental feed operation and home position return, use the 
sscChange2Parameter/sscCheck2Parameter functions to set the S-curve 
ratio (Parameter No.0221). 
When using the S-curve acceleration/deceleration for automatic operation 
and linear interpolation operation, set the S-curve ratio in the point table using 
the sscSetPointDataEx function. 
 
 
Speed
Speed limit value
Deceleration
time
Sin-curve
Command speed
Acceleration time
constant
Deceleration time
constant
Acceleration
time
 
 
Control parameters 
 
Parameter 
No. 
Abbreviation Name 
Initial 
Value 
Unit
Setting 
range
Function 
0221 SRATE 
S-curve 
ratio 
%
0  to 
100 
Set the S-curve ratio of the S-curve acceleration/deceleration 
(Sine acceleration/deceleration). 
  0: S-curve acceleration/deceleration invalid 
  1 to 100: S-curve acceleration/deceleration 
(Note 1) (Note 2)
 
Note 1. S-curve acceleration/deceleration is performed for the acceleration/deceleration selected in acceleration/deceleration method 
(parameter No.0220). 
2. The S-curve ratio set by this parameter is used in JOG operation, incremental feed operation and home position return. For 
automatic operation and linear interpolation operation, set the S-curve ratio in the point table.