INVT Goodrive35 Series - Page 75

Goodrive35 Series Closed-loop Vector Control VFD Function parameters
68
Functio
n code
Name
Detailed instruction of parameters
Default
value
Modif
y
P04 Group SVPWM control
P04.00
Motor 1 V/F curve
setting
These function codes define the V/F curve of
Goodrive35 motor 1 to meet the need of different
loads.
0: Straight line V/F curve; applying to the constant
torque load
1: Multi-dots V/F curve
2: 1.3
th
power low torque V/F curve
3: 1.7
th
power low torque V/F curve
4: 2.0
th
power low torque V/F curve
Curves 2–4 apply to the torque loads such as fans
and water pumps. Users can adjust according to the
features of the loads to achieve a best
energy-consuming effect.
5: Customized V/F (V/F separation); on this mode, V
and F can be separated from f and f can be adjusted
through the frequency given channel set by P00.06
or the voltage given channel set by P04.27 to
change the feature of the curve.
Note: V
b
in the below picture is the motor rated
voltage and f
b
is the motor rated frequency.
Output voltage
Output frequency
Linear type
Square type
Torque step-down V/F curve (1.3
th
order)
Torque step-down V/F curve (1.7
th
order)
Torque step-down V/F curve (2.0
nd
order)
0
◎
P04.01
Torque boost of
motor 1
Torque boost to the output voltage for the features of
low frequency torque. P04.01 is for the Max Output
voltage V
b
.
P04.02 defines the percentage of closing frequency
of manual torque to f
b
.
Torque boost should be selected according to the
load. The bigger the load is, the bigger the boost is.
Too big torque boost is inappropriate because the
motor will run with over-magnetic, and the current of
the VFD will increase to raise the temperature of the
VFD and decrease the efficiency.
When the torque boost is set to 0.0%, the VFD is
0.0%
○
P04.02
Torque boost close
of motor 1
20.0%
○