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4 PARAMETERS FOR POSITIONING CONTROL
(3) Advanced S-curve acceleration/deceleration time is calculated as a function of the
acceleration/deceleration time set in the parameter block by using the parameter
setting of advanced S-curve acceleration/deceleration as shown below.
• Advanced S-curve acceleration time
Condition Advanced S-curve acceleration time
Acceleration section 1 ratio (A1R) = Acceleration section 2 ratio (A2R) = 0.0
Same as acceleration time of the parameter block
(Trapezoidal acceleration processing)
Acceleration section 1 ratio (A1R) or Acceleration section 2 ratio (A2R) ≠0.0
Longer acceleration time compared with the
parameter block.
Acceleration section 1 ratio (A1R) + Acceleration section 2 ratio (A2R) = 100.0 Double the acceleration time of the parameter block.
• Advanced S-curve deceleration time
Condition Advanced S-curve deceleration time
Deceleration section 1 ratio (D1R) = Deceleration section 2 ratio (D2R) = 0.0
Same as deceleration time of the parameter block
(Trapezoidal acceleration processing)
Deceleration section 1 ratio (D1R) or Deceleration section 2 ratio (D2R) ≠0.0
Longer deceleration time compared with the
parameter block.
Deceleration section 1 ratio (D1R) + Deceleration section 2 ratio (D2R) = 100.0 Double the deceleration time of the parameter block.
(4) Deceleration processing is executed by using the deceleration section 1 ratio
(D1R) and deceleration section 2 ratio (D2R) at rapid stop deceleration.
(5) When the FIN acceleration/deceleration (Fixed acceleration/deceleration time
method) is set in the constant-speed control, the setting for advanced S-curve
acceleration/deceleration is invalid. However, advanced S-curve acceleration/
deceleration can be used regardless whether the speed switching point specified
flag (M2040) is ON or OFF.
(6) Advanced S-curve acceleration/deceleration control is enabled at home position
return operation.
When executing a home position return using a proximity dog, the movement
amount to decelerate to creep speed is different compared to trapezoid
acceleration/deceleration and s-curve acceleration/deceleration. This is to ensure
smoothness of acceleration/deceleration. For this reason, the stop position (zero
point) upon completion of home position return is different to when trapezoid
acceleration/deceleration and s-curve acceleration/deceleration is used.
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