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Industrial Servo Motor Yaskawa SGMGH-20A2A61 Sigma 2 1500rpm 200v-ac 1800w Servo Motor
The magnetic field intensity is proportional to the current forced into the motor leads. • The magnetic field rotation is automatically obtained commutating the active coil through mechanical switches (brushes). • The load angle is almost constant and it is about 90° allowing the maximum efficiency (current vs. torque proportion). • The motor is controlled by applying a voltage to the motor leads. The higher the voltage, the higher the speed. The direction is changed by reversing the polarity on the leads. • The maximum torque is limited by the current rating of the motor and it is obtained at zero speed (start-up). • The maximum speed is limited by the supply voltage and it is obtained when no load torque is present.
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SIMILAR PRODUCTS
An electric motor is a device converting electrical energy into mechanical energy (usually a torque). This conversion is usually obtained through the generation of a magnetic field by means of a current flowing into one or more coils.
The rotation is obtained thanks to the attractive force between two magnetic fields: One field is located on the rotor (the moving part). The second magnetic field is located on the stator (the body of the motor).
The angle θ between the two magnetic field is named load angle. The maximum output torque, and then the maximum efficiency, is obtained when the load angle is 90°
The electric motor operation is based on the following points: • At least one of the two magnetic field is generated by a solenoid carrying a current. • The phase relation between the rotor and stator magnetic field (i.e. the load angle) must be always greater than 0° in order to keep the motor in motion (negative angles reverse the rotation). • Output torque depends on both the solenoid current and load angle. • Motor rotation causes a back electro-motive force opposing the motion itself.