EMI is the energy that produces a negative response to any device, which can be generated through sparks on the motor brush, power circuit switches, activation of inductive and resistive loads, relay activation, switches, circuit breakers, fluorescent lamps, heaters, car ignition, and atmospheric discharge. Even electrostatic discharge between people and devices, microwave devices, mobile communication devices, etc. All of these can lead to changes and overvoltages, undervoltages, peaks, transients, etc. This may affect the communication network. This is very common in industries where EMI is common, as machines (such as welding machines), motors (CCMs), and nearby digital networks and computers are heavily used

The biggest EMI problem is that sporadic situations gradually reduce the performance of the device and its components.

. EMI can cause most different problems, such as communication failures between device networks and computer devices in electronic devices, unexplained alarms, relay actions, lack of logic or commands, and burning of components and electronic circuits. Due to poor grounding and shielding, and even engineering errors, power noise is common

Topology and wiring distribution, cable type, and protection technology are factors that consider minimizing the impact of EMI. Please remember that at high frequencies, the behavior of cables is similar to a transmission system with intersecting and chaotic lines, which reflect energy and propagate it from one circuit to another. Maintain good connectivity. Long term reactive power connections may generate resistance or become RF detectors A typical example of how EMI affects the behavior of electronic components is when the voltage peak of a capacitor is higher than its specific nominal voltage. This may cause the dielectric to deteriorate, with its thickness limited by the operating voltage of the capacitor, resulting in a potential gradient lower than the dielectric stiffness of the material, and causing the capacitor to malfunction or even burn out. It can also change the polarization current of the converter to reach saturation or cutting, or even burn the element through the Joule effect, depending on the intensity

Improper installation or use of equipment in non recommended applications may damage system performance, thereby damaging process performance, and also pose a source of danger and accidents. Therefore, it is recommended to only use trained and qualified professionals for installation, operation, and maintenance services Due to poor installation, the reliability of control systems is often threatened. Usually, users overlook their care, but more informed analysis shows that there are issues with the devices involved in cables, their routing and packaging, shields, and ground It is very important that every participant is aware of and most are committed to adopting reliability, operability, and personnel safety in the factory Noise control in automation systems is crucial as it can become a serious problem even for the best equipment and hardware for data collection and operation Any industrial environment contains power noise, including AC power lines, radio signals, machines, and radio stations