What are some low-cost EMC optimization solutions for industrial servo systems?

While ensuring basic EMC performance, seek low-cost optimization solutions for servo systems. Etymotic recommends:

1) Optimize filter design: Avoid over-designing filters through precise calculations and simulations, such as by paralleling damping resistors next to the common-mode inductor (CMZ) to allow for the use of inductors with smaller inductance values.

2) Replace components: In non-critical paths, replace special ferrite beads with lower-cost common ferrite beads (PBZ-Z series), and replace some TVS with varistors (MOV).

3) Layout and structure optimization: Reduce noise at the source by optimizing PCB layout (reducing loop area) and chassis structure (reducing the number of gaps), thereby reducing reliance on filters.

4) Simplify processes: Select lower-cost shielding pads (such as conductive foam instead of finger springs) while meeting shielding effectiveness requirements.

5) Optimize testing: Utilize pre-testing to accurately locate problems and avoid blindly adding components.

These methods can achieve a balance between EMC certification costs, component costs, and production costs, resulting in a product design with optimal cost-effectiveness.