0.0–100.0%
Adjust P03.28 to compensate the low frequency
torque. P03.28 is valid only when the running
frequency is less than 1Hz.
0.0–100.0%
Adjust P03.29 to compensate the torque during
running. P03.29 is valid only when the running
frequency is greater than 1Hz.
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: Multi-point V/F curve
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: Customized V/F (V/F separation); in this
mode, V can be separated from f and f can be
adjusted through the frequency setting channel
set by P00.06 or the voltage setting channel set
by P04.27 to change the characteristics of the
curve.
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
th
order)
Torque step-down V/F curve (1.7
th
order)
Torque step-down V/F curve (2.0
nd
order)
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