Goodrive170-PV Series Solar Pump Inverter Function parameter list
-27-
P04 group Space voltage vector control
This group of function code defines the V/F
curve of motor 1 to meet the needs of
different loads.
0: Straight-line V/F curve, applicable to
constant torque loads
1: Reserved
2: Torque-down V/F curve (power of 1.3)
3: Torque-down V/F curve (power of 1.7)
4: Torque-down V/F curve (power of 2.0)
Curves 2–4 are applicable to the torque
loads such as fans and water pumps. You
can adjust according to the characteristics
of the loads to achieve best performance.
5: Reserved
Note: In the following figure, V
b
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 order)
Torque step-down V/F curve (1.7 order)
Torque step-down V/F curve (2.0 order)
In order to compensate for low-frequency
torque characteristics, you can make some
boost compensation for the output voltage.
P04.01 is relative to the max. output
voltage V
b
.
P04.02 defines the percentage of cut-off
frequency of manual torque boost to the
rated motor frequency f
b
. Torque boost can
improve the low-frequency torque
characteristics in space voltage vector
control mode.
You need to select torque boost based on
the load. For example, larger load requires
larger torque boost, however, if the torque
boost is too large, the motor will run at
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