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8 CONTROL SUB FUNCTIONS
8.5 Functions to Change the Control Details
Acceleration/deceleration time change function
The "acceleration/deceleration time change function" is used to change the acceleration/deceleration time during a speed
change to a random value when carrying out the speed change by the "speed change function" and "override function".
In a normal speed change (when the acceleration/deceleration time is not changed), the acceleration/deceleration time
previously set in the parameters ([Pr.9], [Pr.10], and [Pr.25] to [Pr.30] values) is set in the positioning parameter data items
[Da.3] and [Da.4], and control is carried out with that acceleration/deceleration time. However, by setting the new acceleration/
deceleration time ([Cd.10], [Cd.11]) in the control data, and issuing an acceleration/deceleration time change enable
command ([Cd.12] Acceleration/deceleration time change value during speed change, enable/disable) to change the speed
when the acceleration/deceleration time change is enabled, the speed will be changed with the new acceleration/deceleration
time ([Cd.10], [Cd.11]).
Control details
After setting the following two items, carry out the speed change to change the acceleration/deceleration time during the
speed change.
• Set change value of the acceleration/deceleration time ("[Cd.10] New acceleration time value", "[Cd.11] New deceleration
time value")
• Setting acceleration/deceleration time change to enable ("[Cd.12] Acceleration/deceleration time change value during
speed change, enable/disable")
The following drawing shows the operation during an acceleration/deceleration time change.
t
V
Disabled
[For an acceleration/deceleration time change disable setting]
Disabled
Enabled
t
V
[For an acceleration/deceleration time change enable setting]
Operation with the acceleration/deceleration
time set in [Da.3] and [Da.4].
Speed change
request
[Cd.15]
[Cd.12] Acceleration/deceleration time
change value during speed
change, enable/disable
Operation with the acceleration/deceleration time
([Cd.10] and [Cd.11]) set in the buffer memory.
Speed change
request
[Cd.15]
[Cd.12] Acceleration/deceleration time
change value during speed
change, enable/disable
Содержание RD77MS16
Страница 1: ...MELSEC iQ R Simple Motion Module User s Manual Application RD77MS2 RD77MS4 RD77MS8 RD77MS16 ...
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Страница 316: ...314 9 COMMON FUNCTIONS 9 4 External Input Signal Select Function Program example ...
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Страница 574: ...572 13 PROGRAMMING 13 4 Positioning Program Examples Parameter initialization program Flash ROM write program ...
Страница 575: ...13 PROGRAMMING 13 4 Positioning Program Examples 573 13 Error reset program Axis stop program ...
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