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MELSEC-Q
12 CONTROL SUB FUNCTIONS
(4) If the "new acceleration/deceleration time" is set to "0" and the speed is
changed after the "new acceleration/deceleration time" is validated, the
operation will be controlled with the previous "new acceleration/deceleration
time".
Disabled Enabled
00
1000
Speed change
t
V
New acceleration/deceleration
time ( Cd. 10 , Cd. 11 )
Cd.12
Cd.10 New acceleration time value
Cd.11 New deceleration time value
Example
Speed change
Speed change
Acceleration/deceleration time
change during speed change,
enable/disable selection
Controlled with the acceleration/
deceleration time in the parameter.
(5) The acceleration/deceleration time change function is disabled for JOG
operation and inching operation.
POINT
If the speed is changed when an acceleration/deceleration change is enabled, the
"new acceleration/deceleration time" will become the acceleration/deceleration time
of the positioning data being executed. The "new acceleration/deceleration time"
remains valid until the changeover to the next positioning data. (The automatic
deceleration processing at the completion of the positioning will also be controlled
by the "new acceleration/deceleration time".)
[3] Setting the acceleration/deceleration time change function
To use the "acceleration/deceleration time change function", write the data
shown in the following table to the QD75 using the sequence program.
The set details are validated when a speed change is executed after the details
are written to the QD75.
Buffer memory address
Setting item
Setting
value
Setting details
Axis
1
Axis
2
Axis
3
Axis
4
Cd.10
New acceleration
time value
Set the new acceleration time.
1508
1509
1608
1609
1708
1709
1808
1809
Cd.11
New deceleration
time value
Set the new deceleration time.
1510
1511
1610
1611
1710
1711
1810
1811
Cd.12
Acceleration/
deceleration time
change during
speed change,
enable/disable
selection
1
Set "1: Acceleration/deceleration time change
enable".
1512 1612 1712 1812
Refer to Section 5.7 "List of control data" for details on the setting details.