Method for setting parameters of electronically-commutated motor for use as permanent-split capacitor motor

A method for setting parameters of an electronically-commutated motor (ECM) for use as a permanent-split capacitor (PSC) motor,

• the ECM motor comprising:
• a stator assembly, a rotor assembly, a housing assembly, and a motor controller;
• the motor controller comprising:
• a power circuit, a microprocessor, an inverter circuit, and a voltage measuring circuit;
• the voltage measuring circuit measuring an AC input voltage Vac of an external input power;
• the power circuit supplying power to each circuit part;
• the voltage measuring circuit inputting a measured voltage signal into the microprocessor;
• the microprocessor controlling the inverter circuit to drive the stator assembly;
• and
• the method comprising the following steps:
• 1) energizing the motor and measuring the AC input voltage Vac;
• 2) allowing the motor to run according to recorded rotational direction data and rotational speed data when Vac>Vset1, in which, Vset1 represents a first set value of AC voltage;
• 3) enabling the motor to enter a programming state of rotational direction data and rotational speed data when Vac<Vset2, in which, Vset2 represents a second set value of AC voltage;
• 4) conducting the programming state comprising operating the motor in a rotational speed state, a rotational direction state, or a combined state thereof, with each state lasting for a time of T, respectively;
• and
• 5) determining that the programming state is proper when the user turns off the power;
• and storing the programming state in operation at the moment when the power is turned off as a normal operating parameter of the motor.