What Are the Common Failure Modes and Troubleshooting Techniques for Brake Motors?

The common failure modes and troubleshooting techniques for brake motors include the following:
Motor does not rotate but makes a buzzing sound after being powered on:
Failure mode: This could be due to a single-phase operation caused by power connection issues, an open or disconnected rotor circuit in a wound brake motor, a jammed driven mechanism, incorrect or disconnected wiring at the stator's internal starting position, or overload of the brake motor.
Troubleshooting: First, try unloading the motor and starting it under no-load or partial-load conditions. Second, check if there are any issues with the driven machinery. Then, inspect the contact condition of the brushes, slip rings, and starting resistors. After that, check the power lines, especially the motor's wiring and fuse, for any damage. Finally, re-determine the starting and ending points of the three-phase windings and inspect for any broken or short-circuited windings.
Issues with the braking system:
Failure mode: There may be leaks in the hydraulic lines, fittings, or brake fluid reservoir of the braking system, improper adjustment of the braking system, or issues with the brake motor itself.
Troubleshooting: First, inspect the hydraulic lines, fittings, and brake fluid reservoir of the braking system to ensure there are no leaks and perform necessary bleeding. Second, adjust the tightness of the braking system according to the manufacturer's recommendations. Finally, test the brake motor to ensure it is operating normally. If there are any issues, repairs or replacements may be necessary.
Circuit connection issues:
Failure mode: There may be disconnections, loose connections, or poor contact in the circuit connections of the brake motor.
Troubleshooting: Check the circuit connections of the brake motor to ensure they are secure and free from any disconnections or poor contact.
Overload:
Failure mode: The load that the brake motor needs to brake may exceed its rated load capacity.
Troubleshooting: Ensure that the brake motor is used within its rated load capacity. If the load is too heavy, a more suitable brake motor may need to be replaced.
During troubleshooting, professional tools and equipment such as multimeters and oscilloscopes are often required to accurately measure parameters like voltage, current, and resistance, helping to identify the fault location. For complex faults, it may be necessary to refer to the technical manual of the brake motor or contact professional maintenance personnel for further diagnosis and handling.
Overall, prevention and regular maintenance are equally important for brake motors. Regular inspections of the braking system, circuit connections, and load conditions can help detect and address potential issues in a timely manner, ensuring the normal operation and safety of the brake motor.