NVF5 Series User Manual     Chapter 6 Parameter Function Description 
6.3.3 Accel./Decel. Time and Curve Setting 
The acceleration time refers to the time required for the inverter to accelerate from 
zero  to F0.07-maximum output frequency;the deceleration time refers to the time 
required for the inverter to decelerate from F0.07-maximum output frequency to zero. 
  Linear  Accel./Decel. 
NVF5 has 4 groups Accel./Decel. time,you can switch them by using digital inputs.For 
example:Configure DI1 and DI2 as switch terminals    to consist 2 binary digits(1means DI 
setting is effective,0 means DI setting is ineffective)   
  S Curve Accel./Decel. 
NVF5 has 2 groups S curve Accel./Decel. mode,you can select by setting parameter 
F1.12: 
S  curve Accel./Decel.1:When the target frequency is fixed, the output frequency 
increases or decreases according to the S curve. It can be used in places requiring slow 
start or stop, such as conveyor belts, etc.   
S curve Accel./Decel.2:When the target frequency is dynamically changed in real 
time, the output frequency will increase or decrease in real time according to the S curve.
 
It is suitable for occasions with high comfort and fast real-time response. 
Code  Name  Default 
Description 
F5.01 
DI1 Function 
Selection 
28 
0  ~  63 
28:
Accel. Time Selection 
F5.02 
DI2 Function 
Selection 
29 
0  ~  63 
29:
Accel. Time Selection 
 
K2  K1 
0  0 
Group1:F0.14、F0.15 
0  1 
Group2:F8.04、F8.05 
1  0 
Group3:F8.06、F8.07 
1  1 
Group4:F8.08、F8.09 
 
Code  Name  Default  Setting Range  Description 
F0.14  Accel. Time 1 
(0.0  ~  6500.0)s 
- 
F0.15  Decel.Time 1 
(0.0  ~  6500.0)s 
- 
F8.04  Accel. Time 2 
(0.0  ~  6500.0)s 
- 
F8.05  Decel.Time 2 
(0.0  ~  6500.0)s 
- 
F8.06  Accel. Time 3  Depend 
(0.0  ~  6500.0)s 
- 
- 61 -