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MELSEC-Q
12 CONTROL SUB FUNCTIONS
12.7.7 Acceleration/deceleration processing function
The "acceleration/deceleration processing fu nction" adjusts the
acceleration/deceleration when each control is executed.
Adjusting the acceleration/deceleration proc essing to match the control enables more
precise control to be carried out.
There are two acceleration/deceleration adjustm ent items that can be set:
"Acceleration/deceleration time 0 to 3", and "acceleration/ deceleration method setting".
The details shown below explain about the "acce leration/deceleration processing
function".
[1] "Acceleration/deceleration time 0 to 3" contr ol 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 QD75, four types each of acceleration time and decelerati on ti me ca n be
set. By using separate acceleration/decelerati on times, control can be carried out
with different acceleration/deceleration tim es 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 t he QD75.
The set details are validated when written to the Q D75.
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.