Mitsubishi Electric MELSEC iQ-R Series User Manual page 332

■When velocity/acceleration/deceleration limit value over occurs at switching of FB by buffer
mode
The control change of buffering FB is executed at swiching of FB.
When the control is changed at switching of FB, velocity/acceleration/deceleration limit value over may occur. When velocity/
acceleration/deceleration limit value over occurs, velocity/acceleration/deceleration and override factor at multipul start are
used to control.
Also when velocity/acceleration/deceleration limit value over occurs at swiching of FB, the import of override factor is
executed. If the limit value is not exceeded at the next control change, the override factor after change will be operated.
AxisName.Cd.
VelocityOverride
AxisName.Md.
VelocityOverride
Axis warning
FB1
Execute
Busy
Active
Done
FB2
Execute
Busy
Active
Done
Speed limit
(1500000)
FB1 Target speed (800000)
before changing
VelocityOverride
FB1 Target speed (400000)
before changing
VelocityOverride
9 RELEVANT FUNCTIONS TO VELOCITY
330
9.3 Override Function
2.0
2.0
Multiple start
400%
200% FB1 set velocity
(200000)
4.0
4.0
Speed limit value over
When the acceleration is increased to 400% by
4 speed, change the velocity to 200% using the
override factor at multiple start of FB2 since the
velocity limit value is exceeded. (Axis warning
occurs.)
FB2 Target speed (1200000)
200%
FB2 set velocity (600000)