Torque reference
(Reference value for
torque control)
6-4-2 Torque Bias Function Settings
Use this function to apply bias to the torque reference in the torque control mode.
•
This function is enabled when the 1st/2nd Control Method (A044/A244) is set to 03 (Sensorless vec-
tor control).
•
Set the Torque Bias Selection (P036) to 01 (Input via Digital Operator).
•
The torque control function regards the torque reference value equivalent to the rated output current
To convert it to the rated motor torque ratio, use the following formula:
Rated motor torque ratio = [Torque bias set value] ï‚´ [Rated output current of inverter] / [Rated
motor current]
•
In the Torque Bias Polarity Selection (P038), set the polarity of the torque bias value.
00: As per sign
The forward torque increases when the Torque Bias Value is positive (+) and the reverse torque
increases when the Torque Bias Value is negative (−), independent of the RUN direction.
01: Dependent on RUN direction
The direction in which the torque bias function works depends on the RUN command direction.
Forward command: Forward torque increases when Torque Bias value is positive (+).
Reverse torque increases when Torque Bias value is negative (−).
Reverse command: Reverse torque increases when Torque Bias value is positive (+).
Forward torque increases when Torque Bias value is negative (−).
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