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17Autotuning on Sensorless Vector DrivesFACT: Most motor electrical parameters aredifficult to obtain from the manufacturer.ROTOR RESISTANCEROTOR REACTANCEMAGNETIZING CURRENTSTATOR RESISTANCELEAKAGE REACTANCE?????Not typically found on motor nameplateA Sensorless Vector AUTOTUNE function makes the job easy:1. Enter nameplate motor parameters (base speed, full load amps, voltage,frequency, power factor).2. Run the ‘AUTOTUNE ‘ function. The controller will pulse the motor &determine approximate motor electrical characteristics for SENSORLESSVECTOR Operation.3. The S-V algorithm can now compute torque- and magnetizing currentvectors for more precise motor control.
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