User Manual of A90 Series Inverter
165
conveyor belts. In the acceleration process shown in Fig. 7-15, t1 is the set value of F04.15,
and t2 is the set value of F04.16. In the deceleration process, t3 is the set value of F04.17,
and t4 is the set value of F04.18. The slope of the output frequency remains unchanged
between t1 and t2 as well as between t3 and t4.
F04.14=2: intermittent S-curve acceleration and deceleration
Compared with the continuous S-curve, the intermittent S-curve will not be over-tuned.
The current S-curve trend will be stopped immediately according to changes in the settings
and acceleration/deceleration time, and the new planned S-curve trend will be applied.
t1
t2
t3
t4
Output
frequency
Linear
acceleration
and
deceleration
S-curve
acceleration
and
deceleration
Acceleration time
Deceleration time
Fig. 7-16 Acceleration/Deceleration Time Control Diagram
Function
code
Function code name
Parameter description
Unit
Default
setting
Attribute
F04.19
Stop mode
0: Slow down to stop
1: Free stop
0
○
F04.19=0: deceleration to stop
The motor decelerates to stop according to the set deceleration time [default setting:
based on F00.15 (deceleration time 1)].
F04.19=1: free stop
When the stop command is valid, the inverter will stop output immediately, and the
motor will freely coast to stop. The stop time depends on the inertia of the motor and load.
