What is a brake motor? Brake motor is also called electromagnetic power loss brake motor and braking asynchronous motor.
It is a fully enclosed, self fan cooling, squirrel cage asynchronous motor with DC electromagnet brake.
summary.
Brake motors, also known as electromagnetic power loss braking motor and braking asynchronous motor, are fully enclosed, self fan cooled, squirrel cage asynchronous motors with DC electromagnet brakes.
Mainly divided into: European and American brake motor, imported brake motor, Taiwan brake motor, domestic YEJ series brake motor and ABB brake motor.
Classification.
Brake motor is divided into DC brake motor and communication brake motor.
The DC brake motor needs a rectifier.
The rectified voltage is 99v, 170V or 90-108v.
Due to the rectified voltage, the fastest braking time of the DC brake motor is about 0.
6 seconds.
Due to the direct 380V voltage of the communication brake motor, there is no need for rectification, and the braking time can be completed in 0.
2 seconds.
The DC brake motor has the advantages of simple layout, low cost, fast heating and simple burning of the motor.
The communication brake motor has disorderly layout, high cost, remarkable braking effect and durability, which is the driving force for the ambition of active control.
However, some of the DC brake motors and the brakes communicating with the brake motors (i.e. brakes) cannot be connected to the variable-frequency voltage, and other wiring is required for synchronous control!.
Application scale.
The brake motor has high-precision positioning requirements.
As a brake motor, it probably has the characteristics of agile braking, accurate positioning, safety and reliability, interchangeable braking system, simple layout, simple replacement and repair, etc.
Many factories need brake motors to control motor inertia, reach the precise positioning required, and complete the active operation of machinery.
Such as: improvement machinery, ceramic printing machinery, coating machinery, leather machinery, etc.
Brake motors are widely used and can be seen in all fields of mechanical equipment.
Operating principle there is an electromagnetic holding brake at the tail of the motor.
When the motor is powered on, it is also powered on and closed.
At this time, it does not brake the motor.
When the motor is powered off, it is also powered off.
The holding brake stops the motor under the effect of tension spring.
The two wires connect the two communication input terminals of a rectifier full bridge to the two input terminals of the motor in parallel to communicate with the synchronous input 380V of the motor, and the two DC output terminals are connected to the brake excitation coil.
The operating principle is that when the motor is powered on, the DC current of the coil generates suction to separate the two conflicting surfaces at the tail, and the motor rotates freely.
On the contrary, the motor is braked by the restoring force of the tension spring.
Depending on the motor power, the coil resistance is between tens and hundreds of ohms.
Specification method power supply: three-phase, 380V50Hz operation method: S1 continuous operation system protection grade: IP55 cooling method: ic0141 insulation grade: Class F connection method: “Y” connection method below 3KW and “△” connection method above 4kw (including 4kw).
Operating conditions: ambient temperature: – 20 ℃ – 40 ℃ altitude: below 1000m braking method: power loss braking, braking power supply is supplied by rectifier in junction box, ac220v-dc99v below H100 and ac380-dc170v above h112.
It is applicable to: various machine tools, printing machinery, forging press, transportation machinery, packaging machinery, food machinery, construction machinery, woodworking machinery and other machinery requiring rapid suspension, accurate positioning, reciprocating work and avoiding sliding as spindle drive and auxiliary drive.
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