Mitsubishi Electric MELSEC Q Series Programming Manual page 491

7 AUXILIARY AND APPLIED FUNCTIONS
(k) For control with changed acceleration/deceleration time, even if
acceleration/deceleration time change enable device is turned OFF (invalid),
control at acceleration/deceleration time after change continues until the
operation ends.
Acceleration/deceleration
time change enable device
New acceleration time
value device
New deceleration time
value device
Speed change request
(CHGV)
(l) When position follow-up control (PFSTART) is performed in an axis where
trapezoidal acceleration/deceleration is set, and deceleration time is
changed to a value smaller than the operation cycle by the
acceleration/deceleration time change function during automatic
deceleration, positioning to the set address is completed instantly.
This can cause vibrations or collisions, and depending on the remaining
movement amount, servo errors can occur.
Add automatic decelerating flag (M2128+n) to an interlock condition to so
that acceleration/deceleration time change is not performed during
automatic deceleration, or change the acceleration/deceleration time at a
deceleration time where deceleration stop can be performed without fail.
V
Control at acceleration/
deceleration time after change
ON
OFF
0
0
ON
OFF
7 - 46
2000
500
t