Mitsubishi Electric MELSEC-Q Series User Manual page 661

(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".
Example
Acceleration/deceleration time
Cd.12
change value during speed
change, enable/disable
Cd.10 New acceleration time value
Cd.11 New deceleration time value
(5) The acceleration/deceleration change function cannot be used during speed
control mode or torque control mode. Refer to Section 12.1 "Speed-torque
control" for the acceleration/deceleration processing during speed control
mode.
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".)
Speed change
V
Speed change
Speed change
Disabled Enabled
0
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Chapter 13 Control Sub Functions
New acceleration/deceleration
time ( Cd. 10 , Cd. 11 )
Controlled with the acceleration/
deceleration time in the parameter.
1000 0
t