ACD320user manual Digital Keypad Operation
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If the motor cannot disconnect from its load, set F1-11 to 2 (static tuning), and then press the
RUN. The inverter will measure the stator resistance, rotor resistance and leakage inductance in
sequence, but it will not calculate the mutual inductance and the excitation current with no load,
and the user can use the nameplate parameters that are rated voltage U, rated current I, rated
frequency f and power factor η to calculate these two parameters.
The calculation methods of the motor current with no load and the mutual inductance are
described as follows:
Excitation current with no load:
Mutual inductance calculation:
Where I
0
is the excitation current with no load, L
m
is the mutual inductance and L
δ
is the leakage
inductance.
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