The Beckhoff EL9400 is a compact power-supply plug‑in module for refreshing the E‑bus in Beckhoff EtherCAT System Terminals. It accepts 24 V DC input and can deliver up to 2 A to the E‑bus, ensuring reliable data exchange between EtherCAT couplers and terminals. As a member of the EL9xxx family, the EL9400 provides the required supply and return connections for the E‑bus (24 V and 0 V) and weighs approximately 65 g, making it a small, unobtrusive addition to an automation installation. This module is strictly a bus power component intended to refresh the E‑bus rather than serve as an I/O point, supporting stable operation in compact control architectures.
