5DATA USED FOR POSITIONING CONTROL

Pr.35 S-pattern ratio

MELSEC-Q

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

 

 

sin curve

 

S-pattern ratio = B/A

100%

(Example)

 

 

V

 

 

Positioning

 

 

speed

 

 

 

 

t

When S-pattern ratio is 100%

V

 

 

Positioning

 

 

speed

 

 

b

 

b/a = 0.7

 

a

 

 

 

 

t

When S-pattern ratio is 70%

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Mitsubishi Electronics QD75D, QD75P user manual Pr.35 S-pattern ratio