Mitsubishi MELSEC-Q QD77MS, User Manual

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Chapter 13 Control Sub Functions
13.7.6 Acceleration/deceleration processing function
The "acceleration/deceleration processing function" adjusts the
acceleration/deceleration of each control to the acceleration/deceleration curve
suitable for device.
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
Refer to Section 12.1 "Speed-torque control" for acceleration/deceleration processing
of speed-torque control.
The details shown below explain about the "acceleration/deceleration processing
function".
[1] "Acceleration/deceleration time 0 to 3" control details and setting
[2] "Acceleration/deceleration method setting" control details and setting
[1] "Acceleration/deceleration time 0 to 3" control details and setting
In the QD77MS, 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 QD77MS.
The set details are validated when written to the QD77MS.
Setting item
Setting
value
Setting details
Factory-set
initial value
Pr.9 Acceleration time 0 1000
Pr.25 Acceleration time 1 1000
Pr.26 Acceleration time 2 1000
Pr.27 Acceleration time 3
Set the acceleration time at a value within the range
of 1 to 8388608 ms.
1000
Pr.10 Deceleration time 0 1000
Pr.28 Deceleration time 1 1000
Pr.29 Deceleration time 2 1000
Pr.30 Deceleration time 3
Set the deceleration time at a value within the range
of 1 to 8388608 ms.
1000
: Refer to Section 5.2 "List of parameters" for setting details.