INTRODUCTION
Brake motor is made of two parts consisting of three-phase asynchronous motors and brakes, its belongs to three-phase asynchronous motor derived series Manual brake release and bolt release are two forms of brakes.
Brakes are the main components of the brake motor.Its working power divided into two categories; One is AC brake, the other is DC braking my company produces brake motors are DC brake motors, the advantage of the braking torque is below, Easy installation braking response speed high reliability versatility and other advantages.
1.Operating principle
After the motor is equipped with a cover asbestos friction disc wear-resistant materials and excitation coil when the motor is energized by a spring brake friction disc is a pressing plate, pressing firmly on the plane after the motor cover has been yrocessed,so that the brake disc friction torque generated strong achieve braking purposes. When the excitation coil is snergized to produce electromagnetic suction, pull the spring-loadedplate, pressed board leave the friction plate. The tiction disc is released,the motor flexible rotation, depending on the motor power
between tens to hundreds of European oil resistance.
2.The DC brake can not be directly connected to the AC power to the brake coil is provided with suction cups forlow voltage winding rated DC voltage. Asingle-phase AC poweris rectiffed then supply to a sucker winding to make it work,so the brake motor terminal box ftted with a rectifier, wiring diagram below.
3.The braking time
Brake motor braking time (t)is the time from the motor and brake stopping the power to the shaft completely stopped.
Under normal circunstances, For 63 to 80 trame size motor,the braking time Is 0.5 seconds, For90-132frame size motor, the braking time is 1 second, For 160 to 180 frame size motor, the braking time is 2 seconds.
4.Adjustment and maintenance
In the gorse otbraking the motorincreases the number of brake friction disc wear condition exist, so a gap of the motor cever plate of the friction increases. Changes to the long-term operation of the motor, the motor directly affects the gap between the braking torque. When adjusting the gap is not too small, the gap is too small, the friction disc friction with the motor cover cannot be completely separated from the plane and burned the motor, the gap is too large, pressed board can not pull or pull a strong noise process. Brake pressing plate at the gap magnet chuck brakes, generally for 63 to 112 frame size motor, the brake gap between 0.25mm to 0.30mm, for 132- 180frame size motor, the brake gap between 0.50mm to 0.80mm.
5.Variable frequency operation of brake motor
With the continuous development of social productivity and the continuous improvement of science and technology. The braking and frequency conversion method has been widely used in actuator systems. All asynchronous motors produced by our company can be equipped with frequency converters for operation. At this time, the brake must provide a stable working power supply separately and cannot be connected and shared with the power terminal on the motor. Otherwise, the brake will not function properly. It should be pointed out that when the brake motor is equipped with variable frequency operation, an axial flow fan should be added, which can only be independently controlled and powered.
It is worth noting that the maximum frequency range of all asynchronous motors produced by our company is 60Hz. If users have special requirements, they can submit them to the company.
The power wiring terminals are connected in parallel and shared. Otherwise, the brake will not function properly. It should be pointed out that when the brake motor is equipped with variable frequency operation, an additional axial flow air should be added fan, this fan can only be independently controlled and powered.
It is worth noting that the maximum frequency range of all asynchronous motors produced by our company is 60Hz. If users have special requirements, they can submit them to the company.
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