How to optimize RS (radiated interference immunity) for industrial servo systems?

Optimizing the radiated immunity of the servo system (RS, IEC 61000-4-3) primarily relies on cabinet shielding and internal circuit protection. Etymotic's optimization strategy includes:

1) Cabinet shielding: Ensuring the shielding integrity of the cabinet (especially doors, gaps, and cable entry points), aiming for a shielding effectiveness >40dB in the 80MHz-1GHz frequency band.

2) Internal board-level protection: Filtering all cables (including power and signal cables) entering the cabinet at the entry point, for example, using feedthrough filters or connectors with filtering capabilities.

3) Critical circuit protection: Using local metal shielding for sensitive circuits on the PCB (such as crystal oscillators and reset lines).

4) Software fault tolerance: Adding watchdog timers, redundant verification of critical data, and error recovery mechanisms.

During testing, the equipment should exhibit no performance degradation or malfunction under field strengths of 3V/m or 10V/m. After optimization, the servo system should be able to operate stably in typical industrial electromagnetic environments, resisting radiated interference from peripheral devices (such as walkie-talkies and mobile phones).