Filter
Top Products
12 - 75
MELSEC-
A
12 CONTROL AUXILIARY FUNCTIONS
12.7.7 Acceleration/deceleration processing function
The "acceleration/deceleration processing function" adjusts the
acceleration/deceleration when each control is executed.
Adjusting the acceleration/deceleration processing to match the control enables more
precise control to be carried out.
There are three acceleration/deceleration adjustment items that can be set:
"Acceleration/deceleration time size selection", "acceleration/deceleration time 0 to 3",
and "acceleration/deceleration method setting".
The details shown below explain about the "acceleration/deceleration processing
function".
(1) "Acceleration/deceleration time size selection" control details and setting
(2) "Acceleration/deceleration time 0 to 3" control details and setting
(3) "Acceleration/deceleration method setting" control details and setting
(1) "Acceleration/deceleration time size selection" control details and
setting
In the "acceleration/deceleration time size selection", the sizes (setting ranges) of
the acceleration time, deceleration time, and sudden stop deceleration time are
selected and set.
Acceleration time: The time from speed 0 until the " Pr.7 Speed limit value" is
reached.
Deceleration time: The time from the " Pr.7 Speed limit value" until speed 0 is
reached.
Sudden stop deceleration time: The time from " Pr.7 Speed limit value" until
speed 0 is reached.
Set the required values for the acceleration/deceleration time size in the
parameters shown in the following table, and write them to the D75P2.
The set details are validated at the rising edge (OFF
ON) of the remote station
READY signal [RX(n+7)B].
Setting item
Setting
value
Setting details
Factory-set
initial value
Pr.25
Size selection for
acceleration/dece
leration time
Select the acceleration/deceleration time size (setting
range) from the following two sizes, and set the
appropriate value.
0: 1 to 65535ms
1: 1 to 8388608ms
0
* Refer to section "5.2 List of parameters" for setting details.