596
12.7.6
Acceleration/deceleration processing function
The "acceleration/deceleration processing function" adjusts the acceleration/deceleration of each control to the
acceleration/deceleration curve suitable for devices.
Setting the acceleration/deceleration time changes the slope of the acceleration/deceleration curve.
The following two methods can be selected for the acceleration/deceleration curve:
• Trapezoidal acceleration/deceleration
• S-curve acceleration/deceleration
The details shown below explain about the "acceleration/deceleration processing function".
• "Acceleration/deceleration time 0 to 3" control details and setting
• "Acceleration/deceleration method setting" control details and setting
(1) "Acceleration/deceleration time 0 to 3" control details and setting
In the LD75, four types each of acceleration time and deceleration time can be set. By using separate
acceleration/deceleration times, control can be carried out with different acceleration/deceleration times for
positioning control, JOG operation, OPR, etc.
Set the required values for the acceleration/deceleration time in the parameters shown in the following table, and
write them to the LD75. The set details are validated when written to the LD75.
Refer to
Page 118, Section 5.2 for the information on detail settings.
(2) "Acceleration/deceleration method setting" control details and setting
In the "acceleration/deceleration method setting", the acceleration/deceleration processing method is selected
and set. The set acceleration/deceleration processing is applied to all acceleration/deceleration. (except for
inching operation and manual pulse generator operation.)
The two types of "acceleration/deceleration method setting" are shown below.
(a) Trapezoidal acceleration/deceleration processing method
This is a method in which linear acceleration/deceleration is carried out based on the acceleration time,
deceleration time, and speed limit value set by the user.
Setting item
Setting value
Setting details
Factory-set initial value
[Pr.9]
Acceleration time 0
Set the acceleration time at a value within the range of
1 to 8388608ms.
1000
[Pr.25]
Acceleration time 1
1000
[Pr.26]
Acceleration time 2
1000
[Pr.28]
Acceleration time 3
1000
[Pr.10]
Deceleration time 0
Set the deceleration time at a value within the range of
1 to 8388608ms.
1000
[Pr.28]
Deceleration time 1
1000
[Pr.29]
Deceleration time 2
1000
[Pr.30]
Deceleration time 3
1000
Velocity
Time
Содержание MELSEC-L LD75D
Страница 1: ...MELSEC L LD75P LD75D Positioning Module User s Manual LD75P1 LD75P2 LD75P4 LD75D1 LD75D2 LD75D4 ...
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Страница 47: ...45 CHAPTER 2 SYSTEM CONFIGURATION 2 2 1 General Image of System 1 When connected to a CPU module ...
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Страница 267: ...265 CHAPTER 6 PROGRAM USED FOR POSITIONING CONTROL 6 6 4 Positioning Program Examples ...
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Страница 685: ...683 APPENDICES A Appendix 1 Function Update Appendix 1 1 Function comparison Memo ...
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Страница 806: ...804 5 LD75D2 Unit mm 6 LD75D4 Unit mm 45 4 90 4 95 4 45 45 DIN rail center 45 4 90 4 95 4 45 45 DIN rail center ...
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