Chapter 5 Function Code Table
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Function
Code
Parameter Name Function Description Setting Range Default
b4.02 Acceleration mode 0: Linear acceleration/deceleration
The output frequency increases or decreases
linearly.
1: S-curve acceleration/deceleration
The output frequency increases or decreases
according to the S curve. S curve is applied in the
applications where smooth start or stop is required.
2: Coast to stop (only for b4.03)
Once the output of stop command is active, the
AC drive stops output immediately. Then the motor
coasts to stop due to mechanical inertia.
0, 1 0
b4.03 Deceleration mode 0 to 2 0
b4.04 Time proportion of
S-curve start segment
These two parameters respectively dene the
time proportions of the start segment and the end
segment of S-curve acceleration/deceleration.
In the following gure, t1 is the time dened
in b4.04, within which the slope of the output
frequency change increases gradually. t2 is the
time dened in b4.05, within which the slope of the
output frequency change gradually decreases to
0. Within the time between t1 and t2, the slope of
the output frequency change is xed, that is, linear
acceleration/deceleration.
0.0% to 40.0% 30.0%
b4.05 Time proportion of
S-curve end segment
b4.06 Dynamic auto-tuning
acceleration time
These two parameters are used to set the
acceleration time and deceleration time when the
AC drive performs dynamic auto-tuning (b0.04 = 2).
The calculation and denition are the same.
0.1s to 600.0s 20.0s
b4.07 Dynamic auto-tuning
deceleration time