Cable Glands Used in Motor Controller

This blog will talk about the gland's role in a motor controller and its ability to protect against electromagnetic waves

1. The function of the gland in the motor controller

EMC cable glands, commonly known as electromagnetic shielded glands, are utilized in motor control systems to protect against the effects of electromagnetic noise on nearby electronic equipment. These glands encase the internal circuit of the motor controller and prevent the spread of electromagnetic waves, ensuring minimal interference with other electronic devices.

2. The impact of electromagnetic waves and protection methods

In simpler terms, electromagnetic waves are created by electromagnetic fields that move through space and can disrupt nearby electronic devices. Sensitive equipment often needs to minimize electromagnetic interference, even beyond international regulations. In motor controllers, changes in current can generate radiation that leads to electromagnetic interference in nearby electronics.

For optimal protection against electromagnetic wave interference in the motor controller, consider implementing the following methods:

2.1. Use components' current-specific ESD power filters or wire side-by-side design to effectively suppress current noise.

2.2. Add additional noise filters to the motor controller to improve its ability to resist noise interference from external sources.

2.3. Consider adding a metal mesh covering to the controller, providing both cost savings and increased stability. A metal mesh covering has a strong shielding effect

3. Whether the gland of the motor controller has the effect of preventing electromagnetic waves

While the gland does block electromagnetic waves in its immediate area, it is not enough to fully prevent the impact of waves from other devices. For better protection against electromagnetic interference, additional measures are necessary, including simplifying the wiring process, using separate transmission and ground wires, and implementing advanced cable sealing techniques.

4. Conclusion

The motor control system's gland is crucial in mitigating electromagnetic wave interference. While it may not completely eliminate interference, it serves as a barrier for the circuit within the motor controller, preventing the spread of electromagnetic waves in the surroundings. Additional protective measures are also necessary in order to achieve optimal protection against electromagnetic interference in practical applications.