03 Group Ramp And S Curve - Veikong VFD500 Series Operation Manual

Chapter 5 Function code table
Function Parameter name
code
Acceleration
P03.00 deceleration curve
selection
Acceleration and deceleration curve, also known as "Ramp Frequency Generator (RFG)", is used to smooth the frequency
command. VFD300A/500 supports the following acceleration and deceleration curve:
0: linear acceleration / deceleration
The output changes at a constant acceleration or deceleration. Acceleration time refers to the time from when the inverter
accelerates from zero to the reference frequency (selected by P03.15); deceleration time refers to the time required to
decelerate from the reference frequency to zero.
1: S curve method
This acceleration and deceleration curve acceleration "a" changes in a ramp, start and stop relatively flat. Acceleration and
deceleration process as shown below, Tacc and Tdec for the set acceleration and deceleration time.
The acceleration and deceleration curve of the equivalent acceleration and deceleration time:
Acceleration time = Tacc + (Ts1 + Ts2) / 2
Deceleration time = Tdec + (Ts3 + Ts4) / 2
2: S curve method B
The time of this S-curve is defined as in the method A except that in the acceleration / deceleration process, if the target
frequency suddenly approaches or the acceleration / deceleration time changes, the S-curve is re-planned. In addition, when
the target frequency changes, the S Curves avoid "overshoot" as much as possible.
P03.01 Acceleration time 1
P03.02 Deceleration time 1
P03.03 Accelerationtime2
P03.04 Deceleration time2
P03.05 Acceleration time3
P03.06 Deceleration time3
VFD500 high performance vector control frequency inverter user manual

03 Group Ramp and S curve

and 0：linear
1：S curve A
2：S curve B
Output frequency
recommand
T
acc
T
T
S 1
S 2
Setting value depend on P03.16
P03.16 = 2, 0.00～600.00s;
P03.16 = 1, 0.0s～6000.0s;
P03.16 = 0, 0s～60000s
Setting value depend on P03.16
P03.16 = 2, 0.00～600.00s;
P03.16 = 1, 0.0s～6000.0s;
P03.16 = 0, 0s～60000s
0.01～60000s same as P03.01
0.01～60000s same as P03.02
0.01～60000s same as P03.01
0.01～60000s same as P03.02
Description
T
d e c
T
T
S 4
S 3
- 37-
Default
0
t
Depend
on model
Depend
on model
Depend
on model
Depend
on model
Depend
on model
Depend
Property
★
☆
☆
☆
☆
☆
☆