Mitsubishi Electric MELSEC iQ-R Series User Manual page 301

■S-curve acceleration/deceleration processing method
In this method, the motor burden is reduced during starting and stopping.
This is a method in which acceleration/deceleration is carried out gradually, based on the acceleration time, deceleration time,
speed limit value, and "[Pr.35] S-curve ratio" (1 to 100%) set by the user.
V
When a speed change request or override request is given during S-curve acceleration/deceleration processing, S-curve
acceleration/deceleration processing begins at a speed change request or override request start.
When speed change
request is not given
Set the required values for the "acceleration/deceleration method setting" in the parameters shown in the following table, and
write them to the Motion module.
The set details are validated when written to the Motion module.
Setting item
[Pr.34]
[Pr.35]
Refer to the following for the setting details.
Page 411 Basic Setting
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t
Speed change (acceleration)
Command speed
before speed change
Speed change request
Speed change (deceleration)
Acceleration/deceleration
process selection
S-curve ratio
• Parameters are set for each axis.
• It is recommended that the parameters be set whenever possible with the engineering tool. Execution by a
program uses many programs and devices. The execution becomes complicated, and the scan times will
increase.
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Setting Setting details
value

Set the acceleration/deceleration method.
0: Trapezoidal acceleration/deceleration
processing
1: S-curve acceleration/deceleration processing

Set the acceleration/deceleration curve when "1"
is set in "[Pr.34] Acceleration/deceleration
process selection".
Factory-set initial value
0
100
8 CONTROL SUB FUNCTIONS
8.8 Other Functions
8
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