XFE01.1-FB-03 by Bosch Rexroth Indramat

The XFE01.1-FB-03 module is produced by Bosch Rexroth Indramat within the XM21 IndraControl Systems series. It functions as a fieldbus master interface, allowing an XM21 controller to supervise distributed drives, I/O racks, and safety devices across industrial Ethernet lines. Installed in a control cabinet backplane, the unit manages real-time telegrams so that process data reach actuators and sensors with predictable latency in machining cells, packaging lines, and material-handling stations. This role lets the central controller coordinate command traffic and status feedback across the network without a separate gateway module. It is intended for backplane integration, which keeps the communication hardware inside the control system and reduces external cabling between the controller and the field network interface.

The module is powered from a nominal 24 V DC supply that is delivered through its 4-pin XD1 connector; at full load it draws only 200 mA, so overall heat dissipation is limited to 4.8 W. Correct wiring follows the pin assignment a1/a2 = +24 V and b1/b2 = GND. Network access is provided through 2 × RJ45 sockets, each galvanically isolated to 1200 V DC for one minute to prevent surge coupling between the machine network and the logic circuits. The housing meets IP20 protection, which suits installation inside an enclosed cabinet and helps protect the electronics from accidental contact.

The device falls under Overvoltage Category 2, indicating tolerance for the transient levels normally present in fixed-installation machinery. Acting as the master, it exchanges cyclic and acyclic data over PROFINET and EtherNet/IP, so real-time control traffic and parameter data can be handled on the same communication platform. It also complies with Protection Class III, which requires connection only to a safety extra-low-voltage source. This arrangement reduces electrical shock risk and supports use alongside other low-voltage automation components.