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Parameter description
Suppose the input voltage source is X (X is 0 to 100% of the value), the output voltage V F of the
relationship between the inverter and the frequency is:
V / F=2*X* (Motor rated voltage) / (rated motor frequency)
Torque boost
P3-01
Setting range
Cut-off frequency of torque
P3-02
Setting range
As to compensate for V / F control low frequency torque characteristics, make increase
compensation for the low-frequency inverter output voltage. However, the torque boost is set too large,
the motor overheating, inverter over-current.
When the load is heavy and the motor starting torque is not enough, it is recommended to increase
this parameter. Light can be reduced when the load torque boost. When the torque boost is set to 0.0, the
inverter is automatic torque boost, torque boost at this time according to the drive motor stator resistance
parameters calculated automatically required.
Torque boost Torque cut-off frequency: Under this frequency, torque boost torque is effective.
More than this set frequency, torque boost will failure. See details in Figure 6-3.
Figure 6-3 Diagram of manual torque boost
Multi-VF frequencies F1
P3-03
Setting range
Multi-VF
P3-04
Setting range
Multi-VF frequencies
P3-05
Setting range
Multi-VF
P3-06
Setting range
Multi-VF frequencies
P3-07
Setting range
Multi-VF
P3-08
Setting range
P3-03 ~ P3-08 six parameters to define multi-segment V / F curve.
Multi-point curve V / F should be set according to the load characteristics of the motor. What need
to be aware of is that, Relationship between the voltage and frequency three points points must be met:
V1＜V2＜V3, F1＜F2＜F3. Figure 6-4 is a schematic view of multi-point setting VF curve.
Voltage is set too high may cause motor overheating and even burned at low frequencies, the drive
may be too stall or over-current protection.
Factory default
0.0%～30%
Factory default
0.00Hz～
Output voltage
VI: Manual torque boost voltage
fl: Manual torque boost cut-off frequency fb:Rated operating frequency
Factory default
0.00Hz～P3-05
Voltage point V1 Factory default
0.0%～100.0%
F2
Factory default
P3-03～P3-07
Voltage point V2 Factory default
0.0%～100.0%
F3
Factory default
P3-05 ~ motor rated frequency (P1-04) Note:
second motor rated frequency is A2-04
Voltage point V3 Factory default
0.0%～100.0%
Specification of high-performance vector convertor
Model confirmation
50.00Hz
maximum output frequency
Vb: Maximum output voltage
0.00Hz
0.0%
0.00Hz
0.0%
0.00Hz
0.0%
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Output frequency
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