Mitsubishi Electric MELSEC Q Series Programming Manual page 139

4 PARAMETERS FOR POSITIONING CONTROL
(b) The rapid stop deceleration time can be set to a value larger than the
deceleration time by turning ON the rapid stop deceleration time setting error
invalid flag (SM805).
1) Turn ON the rapid stop deceleration time setting error invalid flag
(SM805) before operation to use the rapid stop deceleration time setting
error invalid.
(The setting value is input at start.)
2) For the advanced S-curve acceleration/deceleration, operation is
controlled with either small value of setting value for rapid stop
deceleration time and deceleration time even if the rapid stop
deceleration time setting error invalid flag (SM805) turns ON.
POINTS
(1) If the rapid stop deceleration time is longer than the deceleration time, an
overrun may occur.
Speed command
Rapid stop command
(M3201+20n)
(2) If a value larger than the deceleration time is set as the rapid stop deceleration
time for the parameter block and positioning data of servo program, a warning
will occur. However, writing to the Motion CPU is possible.
(2) Rapid stop deceleration time  Deceleration time
When the rapid stop cause occurs during deceleration, the axis decelerates to a
stop in the rapid stop time.
Ver.! : Refer to Section 1.3 for the software version that supports this function.
Ver.!
V
ON
OFF
Deceleration stop processing
Rapid stop cause
Stop
4 - 18
The deceleration distance increases
by rapid stop command.
t
Real deceleration time
Rapid stop detection processing