Mitsubishi Electric MELSEC Q Series Programming Manual page 155

4 PARAMETERS FOR POSITIONING CONTROL
(6) Automatic decelerating flag (M2128 to M2159)
When the automatic deceleration processing is started during acceleration, the
acceleration is decreased according to the acceleration section 2 ratio setting
until the acceleration reaches zero. Therefore, the speed increases for a while
before deceleration stop processing is executed.
(Deceleration is smooth.)
Speed change V
Speed
Command speed V
1
Command speed V
0
0
Acceleration
AmaxA
0
DmaxA
Automatic decelerating flag
(M2128 to M2159)
POINTS
When the automatic deceleration processing is started during acceleration
processing of advanced S-curve acceleration/deceleration, in order to maintain
smoothness of acceleration, the speed will continue to increase until acceleration
reaches zero.
(Acceleration)
1
ON
OFF
4 - 34
The acceleration decrease processing
after automatic deceleration start
Deceleration stop processing
Time
Time