Operation When Specifying Acceleration/Deceleration 0 - Mitsubishi Electric MELSEC iQ-R Series User Manual

Operation when specifying acceleration/deceleration 0

When "0.0" is specified for the acceleration/deceleration, the operation differs at startup and the rest.
When "1: mcFixedTime" is selected in the "acceleration/deceleration method setting" (Options bit 0 to 2) of the FB, the
operation is the operation when "0.0" is specified for the acceleration/deceleration time. The operation is the same as
specifying "0.0" for acceleration/deceleration.
Specifying 0.0 at start
Select the operation when "0.0" is specified for the acceleration and the deceleration in
AxisName.Pr.AccelerationZeroBehavior.
■When selecting "-1: ACCError"
The error "Acceleration/Deceleration 0 Specified Operation Error at Start" (error code: 1A0CH) occurs, and the axis does not
start.
■When selecting "1: MaximumAcceleration"
If "0.0" is specified for the acceleration or the deceleration, an error will not occur. For acceleration, even if the jerk is set,
trapezoidal acceleration/deceleration is operated and the acceleration/deceleratio is performed in one operation cycle. In
these case, acceleration/deceleration is performed exceeding the acceleration limit value and deceleration limit value.
Speed
Target
speed (V)
Acceleration
Precautions
Pay full attention when setting "1: MaximumAcceleration", because operation is rapid motion.
Specifying 0.0 other than at start
■At the acceleration change/At the deceleration change
When "0.0" is specified at the acceleration change or the deceleration change, the change will not be accepted, and the
operation is continued at the target acceleration or the target deceleration before change.
■At multiple start
When "0.0" is specified for the acceleration or the deceleration in the multiple started FB, the target acceleration or the target
deceleration of the previous FB is taken over.
Specifying 0.0 at stop processing
In MC_Stop/MC_GroupStop and the deceleration at stop setting, when "0.0" is specified for the deceleration, the axis
immediately stops without an acceleration/deceleration.
9 RELEVANT FUNCTIONS TO VELOCITY
308
9.1 Acceleration/deceleration Processing Function
0 is specified for acceleration/deceleration
Time
Accelerates to the target speed in one operation cycle.
Time
Decelerates to the target position in one operation