• Perform auto tuning ONLY after the motor has completely stopped running.
• Before you run auto tuning, check the motor pole number, rated slip, rated current, rated
volage and efficiency on the motor’s rating plate and enter the data. The default parameter
setting is used for values that are not entered.
• When measuring all parameters after selecting 2 ( All - static type) at bA20: compared with
rotation type auto tuning where parameters are measured while the motor is rotating,
parameter values measured with static auto tuning may be less accurate. Inaccuracy of the
measured parameters may degrade the performance of sensorless operation. Therefore, run
static type auto tuning by selecting 2 (All) only when the motor cannot be rotated (when
gearing and belts cannot be separated easily, or when the motor cannot be separated
mechanically from the load).
• In PM synchronous motor sensorless control mode, check the motor’s rating plate and enter
the motor specifications, such as the base frequency, pole number, rated current and voltage,
and efficiency, before performing auto tuning and detecting other motor parameters by
setting bA.20 (Auto Tuning) to 7 [All (PM)]. The detected parameter values may not be
accurate if the motor’s base specifications are not entered.
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