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