How can a smart controller PAC balance real-time motion performance and EMC?

Balancing the real-time motion performance and EMC of the PAC intelligent controller requires optimization of both hardware and software.

On the hardware side, a high-performance processor and real-time bus (such as EtherCAT) are employed, with shielding and filtering of critical signals (such as interrupts). The power supply design prioritizes low noise, using ferrite beads (PBZ1608A-102Z0T) and decoupling capacitors.

On the software side, a real-time operating system (RTOS) and priority scheduling are implemented to ensure motion control tasks are not interfered with. Simultaneously, EMC interference detection and fault tolerance mechanisms are incorporated.

During testing, under interference (such as EFT 4kV), the motion control cycle jitter is less than 1μs, and real-time performance is not compromised. The design balances the PAC's compliance with the IEC61800-3 motion control standard while also passing the IEC61000-4 series EMC tests.