Common faults of electromagnetic brakes

Publish Time:

2018-09-12

The operation of electromagnetic brakes is affected by mechanical and electrical faults.

The operation of electromagnetic brakes is affected by mechanical and electrical faults. Faults are more likely to occur during startup, followed by periods of load or idling. Mechanical faults include:

(1) Intrinsic faults: Prolonged operation of the electromagnetic brake causes its windings to overheat and oxidize, corrode and burn, leading to frequent system failures during operation徑

(2) Electrical aspects: Insufficient power input and output voltage of the electromagnetic brake's rectifier module prevent the electromagnetic brake from engaging properly during operation. Long-term corrosion and oxidation of power leads can cause grounding or short-circuit overcurrent switch tripping. Dirty, loose, or overheated wiring terminals and leads of the electromagnetic brake's rectifier module can prevent the electromagnetic brake from releasing normally, leading to wear of the shaft friction disc, and even increasing motor current, causing overload tripping.ß

(3) Auxiliary component issues: During long-term operation, the fixing bolts contacting the electromagnetic brake and the motor body may suffer wear, corrosion, and deformation, as well as vibrations generated during operation, leading to loose fixing bolts, delayed engagement or inability to properly engage between the electromagnetic brake and the electromagnetic friction disc, causing the interlock system to malfunction.ß

(4) Wear: Due to excessive clearance between the electromagnetic brake and the electromagnetic friction disc, coupled with dust and water mist contamination, the electromagnetic force between them is reduced. This prevents the electromagnetic brake from engaging normally with the electromagnetic friction disc when energized, and increases the wear on the motor shaft friction disc.ß

(5) Braking faults: Insufficient braking force, brake arm unable to open, slow brake release action, braking torque unable to brake in time, brake failure, excessive wheel temperature, smoking brake shoes, and other faults.

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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