Inovance MD280NT3.7GB - Group FB: Overload & Protection

Description of Function Codes MD280 User Manual
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drive may degrade.
After the rated motor power is changed, the AC drive calculates the rated current, no-load
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current, no-load current, and stator resistance.
Function Code Parameter Name Setting Range Default
F1-04 V/F curve setting
0: Linear V/F
1: Multi-point V/F
2: Square V/F
0
 0: Linear V/F
It is applicable to common constant torque load.
 1: Multi-point V/F
It is applicable to special load such as dehydrator and centrifuge. Any such V/F curve
can be obtained by setting parameters of F1-03 to F1-08.
 2: Square V/F
It is applicable to centrifugal loads such as fan and pump.
Function Code Parameter Name Setting Range Default
F1-05 Torque boost
0.0%–30.0%
)L[HG
1.0%
F1-06
Cut-off frequency of
torque boost
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50.00 Hz
To compensate the low frequency torque characteristics of V/F control, you can boost the
output voltage of the AC drive at low frequency by modifying F1-05.
If the torque boost is set to too large, the motor may overheat, and the AC drive may suffer
overcurrent.
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If the load is small, decrease the value of F1-05. If it is set to 0.0, the AC drive performs
automatic torque boost. In this case, the AC drive automatically calculates the torque boost
value based on motor parameters including the stator resistance.
F1-06 specifies the frequency under which torque boost is valid. Torque boost becomes
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