Sharing about the working principle of the brake motor

Publish Time:

2020-07-01

The brake motor has high-precision positioning requirements. As a brake motor, it should have the following characteristics: rapid braking, accurate positioning, reliability, interchangeable braking system, simple layout, and convenient replacement and maintenance. Many manufacturers require brake motors to control motor inertia, achieve accurate positioning, and complete automated machine operation. Examples include lifting machines, ceramic printing machines, coating machines, and leather machines. Brake motors have a wide range of applications and can be found on various machine equipment platforms.

The brake motor has high-precision positioning requirements. As a brake motor, it should have the following characteristics: rapid braking, accurate positioning, reliability, interchangeable braking system, simple layout, and convenient replacement and maintenance. Many manufacturers require brake motors to control motor inertia, achieve accurate positioning, and complete automated machine operation. For example: lifting machines, ceramic printing machines, coating machines, leather machines, etc. Brake motors have a wide range of applications and can be found on various machine equipment platforms.

There is an electromagnetic brake at the tail of the motor. When the motor is energized, it is also energized and engaged, at which time it does not brake the motor. When the motor is de-energized, it is also de-energized, and the brake stops the motor under the action of the spring.

Two wires connect the two switching input terminals of a full-bridge rectifier to any two input terminals of the motor, synchronously inputting 380V AC, and the two DC output terminals are connected to the brake excitation coil. The working principle is that when the motor is energized, the coil receives DC current to generate suction, opening the two contact surfaces at the tail, releasing the motor to rotate. Conversely, the spring restoring force causes the motor to brake. Depending on the motor power, the coil resistance is between tens and hundreds of ohms.

DC brake motors have a simple structure, low cost, and relatively fast heating, which can easily damage the motor. AC brake motors have a complex structure, relatively high cost, obvious braking effect, and durability, making them an ideal power source for automated control. However, the brake pads (i.e., brakes) of both DC and AC brake motors cannot be connected to variable frequency voltage and require separate wiring for synchronous control!

In the field of industrial automation and mechanical equipment, brakes are core components that ensure safe operation and precise control. Their performance directly affects production efficiency and personnel safety. AC brakes, as braking devices driven by AC power, play an irreplaceable role in various industrial scenarios due to their high efficiency, reliability, and rapid response.

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