INVT Goodrive350-19 Series Operation Manual page 234

Goodrive350-19 series VFD
7.2.5 P04 V/F control
Function
Name
code
V/F curve setup of
P04.00
motor 1
Torque boost of
P04.01
motor 1
Motor 1 torque
P04.02
boost cut-off
Description
This group of function code defines the V/F curve
of motor 1 to satisfy different load characteristics
needs.
0: Straight V/F curve; fit for constant-torque load
1: Multi-point V/F curve
2: Torque down V/F curve (1.3
3: Torque down V/F curve (1.7
4: Torque down V/F curve (2.0
Curve 2–4 are suitable for torque-variable load of
fan pump and similar equipment. You can make
adjustment based on load characteristics to
achieve optimal energy-saving effect.
5: Customized V/F (V/F separation); under this
mode, V is separated from f. You can adjust f
through the frequency reference channel set by
P00.06 to change the curve characteristic, or
adjust V through the voltage reference channel set
by P04.27 to change the curve characteristics.
Note: The V in the figure below corresponds to
b
rated motor voltage, and f
motor frequency.
Output voltage
Linear type
Square type
In order to compensate for low-frequency torque
characteristics, you can make some boost
compensation to the output voltage. P04.01 is
relative to the maximum output voltage V
P04.02 defines the percentage of cut-off frequency
of manual torque boost to the rated motor
frequency f Torque boost can improve the
b.
- 227 -
th
order)
th
order)
nd
order)
corresponds to rated
b
Torque step-down V/F curve (1.3
Torque step-down V/F curve (1.7
Torque step-down V/F curve (2.0
Output frequency
b.
Function parameter list
Default
Modify
value
0
th
order)
th
order)
nd
order)
0.0%
20.0%
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