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ASDA-A3

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Control Mode

6.3.3 Smooth Speed command

S-curve filter

During the process of acceleration or deceleration, the S-curve filter uses the three-stage

acceleration curve and creates a smoother motion profile. It avoids jerk (rapid change of

acceleration), resonance, and noise caused by abrupt speed variation. You can use the

following parameters for adjustment.

 The S-curve acceleration constant (P1.034) adjusts the slope of the change in acceleration.

 The S-curve deceleration constant (P1.035) adjusts the slope of the change in deceleration.

 The S-curve acceleration / deceleration constant (P1.036) improves the stability of the

motor when it starts and stops.

6

Speed

Rated

speed

Acceleration

Deceleration

0

Torque

Time

(ms)

0

P1.036

2

P1.034

P1.036

2

P1.036

2

P1.035

Figure 6.3.3.1 S-curve speed profile and time setting

Time

(ms)

P1.036

2

Refer to Chapter 8 for detailed descriptions of the relevant parameters.

Parameter

P1.034

P1.035

P1.036

Function

S-curve acceleration constant

S-curve deceleration constant

S-curve acceleration / deceleration constant

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