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Braking principle of three-phase AC brake motor
- Categories:Industry news
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- Time of issue:2020-08-06 15:31
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(Summary description)Because the three-phase asynchronous motor has the advantages of simple structure and reliable operation, it has been widely used in industrial production for several years. However, in many use cases, especially in the industry of processing components
Braking principle of three-phase AC brake motor
(Summary description)Because the three-phase asynchronous motor has the advantages of simple structure and reliable operation, it has been widely used in industrial production for several years. However, in many use cases, especially in the industry of processing components
- Categories:Industry news
- Author:
- Origin:
- Time of issue:2020-08-06 15:31
- Views:
Because the three-phase asynchronous motor has the advantages of simple structure and reliable operation, it has been widely used in industrial production for several years. However, in many use cases, especially in the industry of processing components, it is inevitable to require it to have a braking function, that is, when the motor needs to be stopped, it will stop running immediately. To some extent, this is not a joke. The three-phase AC brake motor has its own unique advantages in this respect, and it is also a type of brake motor that is currently used more in the industry. What is its braking principle?
Three-phase AC brake motors are born for braking devices, and the "speed relay" is a core control element that determines the degree and risk of braking. Its accuracy often has great requirements on the processing accuracy of the product. The braking is too strong or too slow to meet the standard, so the performance performance is a big test for the three-phase AC brake motor and machinery.
The working principle of the three-phase AC brake motor: After clicking the start button, the motor works normally. At this time, the normally open contact of the speed relay is in the closed state to prepare for the possible braking. When the stop button of the machine is pressed, the three-phase AC brake motor starts to work and the main contactor is released. Because the motor is still rotating at high speed under the action of inertia at this time, the normally open contact of the speed relay is closed at this time, and the power supply passes through the normally closed contact of the main contactor and the normally open contact of the speed relay at this time. The function is to turn on the brake contactor of the motor for the purpose of reversing the motor. When the motor speed is close to 0 under the action of the three-phase AC brake motor, the speed relay is normally open and the brake contactor is released. The motor stops working.
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