To make special adjustments for Advanced Open Loop [A1-02 = 4] (AOLV) control, note these items:
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Do Rotational Auto-Tuning first.
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When there is a load, applications must stay constant around zero speed in AOLV control. If the application will not stay constant around zero speed, set A1-02 = 3 [Closed Loop Vector].
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The tolerance of regenerative torque at low speeds decreases in AOLV control. When regenerative torque is necessary in the low speed range, set A1-02 = 3.
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You cannot use AOLV control in elevators or other lifting applications because there is a risk that the load could slip.
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If you operate the drive at a frequency lower than n4-70 [Speed Command Comp @ Low Freq] (default setting: 1.00 Hz), the motor can rotate at a frequency that is approximately 1/2 of the n4-70 setting. Set E1-09 [Minimum Output Frequency] > 0 to not let the motor to rotate at a lower frequency than the n4-70 setting. When the frequency reference ≤ E1-09, the drive output will turn OFF.