MITSUBISHI ELECTRIC Mitsubishi Programmable Logic Controller QD75D - Manual (Page 127)

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MELSEC-Q
5 DATA USED FOR POSITIONING CONTROL
Pr.35 S-pattern ratio
Set the S-pattern ratio (1 to 100%) for carrying out the S-pattern
acceleration/deceleration process.
The S-pattern ratio indicates where to draw the acceleration/deceleration curve
using the Sin curve as shown below.
A
B
B/2 B/2
V
t
V
t
b/a = 0.7
b
a
sin curve
S-pattern ratio = B/A 100%
(Example)
Positioning
speed
Positioning
speed
When S-pattern ratio is 100%
When S-pattern ratio is 70%