Chapter 4 Parameters
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VFD-L-I Series
Revision July 2009, SW V1.1
4-15
01-16
Auto-Acceleration / Deceleration
Factory Setting: 0
Settings
0
Linear
Accel/Decel
1
Auto Accel, Linear Decel
2
Linear Accel, Auto Decel
3
Auto Accel/Decel (Set by load)
4
Linear Accel; Auto Decel, Stall Prevention during Decel
5
Auto Accel/Decel, Stall Prevention during Decel
If the auto acceleration/deceleration is selected, the AC drive will acceleration/deceleration in
the fastest and smoothest means possible by automatically adjusting the time of
acceleration/deceleration. When Pr.01-16 is set to linear accel/decel, the AC drive will
acceleration/deceleration with linear or S curve way.
01-17
Acceleration S-Curve
01-18
Deceleration S-Curve
Settings
0 to 7
Factory Setting: 0
These two parameters allow you to configure whether the acceleration and/or deceleration
ramps are linear or S-shaped. The S-curve is enabled when set at 1-7. When this function is
enabled, the AC motor drive will accel/decel with different speed according to the original
accel./decel. time. When it is set to 0, it is linear acceleration/deceleration.
From the diagram shown below, the original setting acceleration/deceleration time will be for
reference when the function of the S-curve is enabled. The actual acceleration/deceleration
time will be longer with the increased setting.
3
1
2
4
1
3
4
2
1 2
3 4
Disable S curve
Enable S curve
Acceleration/deceleration Characteristics
Summary of Contents for VFD-L-I Series
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