How to control EMC consistency in mass production of industrial servos?

To ensure EMC consistency in mass production of servo products and guarantee that each device meets certification requirements, a rigorous quality control process must be established. Key control points for Yinte Electronics include:

1) Key component control: Establishing a supplier approval list for components with significant EMC impact (such as common-mode inductors (CMZ), magnetic beads (PBZ), filter capacitors, and shielding gaskets), conducting incoming material inspections to ensure their parameters (such as inductance and impedance curves) are within tolerance ranges.

2) Production process control: Specifying key assembly processes, such as the grounding method of shielded cables, the installation torque of conductive gaskets, and the tightening sequence of filter screws, and creating work instructions.

3) Online testing: Setting up a rapid EMC screening station at the end of the production line, for example, using fixed-frequency point testing for conducted interference or performing simple radiated scanning, isolating and analyzing equipment exceeding standards.

4) Regular sampling: Randomly sampling samples from each batch and sending them to the laboratory for a full set of EMC type tests.

Through these controls, the EMC performance fluctuations of mass-produced products can be controlled within ±3dB, maintaining brand reputation and customer satisfaction.