How to ensure EMC of motion controller MC emergency stop signal?

Ensuring the EMC reliability of the motion controller's (MC) emergency stop signal is paramount for safety-related systems. The emergency stop signal loop should be powered independently of other circuits, ideally using a safe 24VDC voltage. Signal transmission should employ a dual-channel redundant and inverse logic design, such as series connection of normally closed contacts. Each channel should have independent RC filtering and TVS protection at the input. High-quality shielded cables must be used for the signal lines, with both ends of the shield grounded to ensure shielding continuity. However, the risk of ground loops must be considered; this can be mitigated by adding ferrite cores to the cable to suppress low-frequency circulating currents. The emergency stop input circuit should be physically isolated from other digital inputs. The controller's internal emergency stop handling should utilize safety relays or certified safety PLC logic. The entire emergency stop loop must undergo comprehensive EMC immunity testing, including EFT, surge, and power frequency magnetic fields, to ensure correct and timely triggering of the emergency stop function under any interference, without false triggering. It must comply with safety standards such as IEC 60204-1.