Learning Advanced Features
As the motor is not rotating while the parameters are
measured, the measurements are not affected when
the load is connected to the motor spindle. However,
when measuring parameters, do not rotate the motor
spindle on the load side.
Rs+Lsigma (rotating
type)
Measures parameters while the motor is rotating. The
measured motor parameters are used for auto torque
boost or sensorless vector control.
Measures the rotor time constant (Tr) with the motor
in the stopped position and Control Mode (dr.09) is set
to 4 (IM Sensorless).
Displays motor parameters measured by auto tuning.
For parameters that are not included in the auto tuning measurement list, the default
setting will be displayed.
• 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 voltage
and efficiency on the motor’s name plate and enter the data. The default parameter setting is
used for values that are not entered.
• When measuring all parameters when motor is static after selecting 2[(All(Static type)] at bA.20
(auto tuning), the accuracy is less than the method of selecting 1 (ALL) and measuring the
parameters when the motor is rotating. This means that the performance sensorless operation
may be lowered. 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).
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