What are the advantages of motors

In the actual production of motor, because there are a large number of simple program control processes controlled by switching value, and the actual production process and flow are often changed, the traditional relay contact control system often can not meet this requirement.

Therefore, a control device combining relay contact control and electronic technology has appeared, which is called sequence controller. It can change the control program according to the production needs, and its structure is much simpler and cheaper than that of electronic computer. It realizes the relay contact control through the insertion or programming of combined logic elements. However, its device volume is large and its function is also limited. With the development and application of large-scale integrated circuit and microprocessor technology.

Servo motor has the advantages of simple structure, reliable operation and high efficiency; The disadvantages are large volume and poor starting characteristics. Due to the use of permanent magnet excitation, the excitation loss and related stray loss are eliminated, so the efficiency is high. Because there is no collector ring and brush required by electromagnetic synchronous motor, its mechanical reliability is the same as that of induction (asynchronous) servo motor, but the power factor is much higher than that of asynchronous motor, so that the volume of permanent magnet synchronous motor is smaller than that of asynchronous motor.

China's motor standard stipulates that the nameplate data does not include this item, so this parameter must be obtained from the motor manufacturer. The accurate slip or rated speed value and power factor can be calculated according to the nameplate data once the motor is determined, or the accurate value can be obtained from the motor manufacturer.