Hitachi SJ300 Serie Guía Referencia Rápida página 38

Auto-tuning Procedure
The SJ300 auto-tuning feature calibrates the inverter to the parameters of
a specific motor such as winding resistance and reactance. For optimum
sensorless vector control, it is important to auto-tune during the initial
installation, and after replacing either the motor or the inverter.
Auto-tuning requires that you configure the inverter for the desired type
of vector control (set A044 = 03, 04, or 05). Then you can perform the
auto-tuning procedure, which is detailed in the SJ300 Inverter Instruction
Manual.
36