Product Description:

The XFE01.1-FB-03 is an Ethernet fieldbus extension module produced by Bosch Rexroth Indramat for the XM21 IndraControl Systems series. Installed beside an XM21 CPU, the unit serves as an interface component that lets the controller govern remote drives, I/O stations, and safety nodes on industrial Ethernet networks. Its role in an automation cabinet is to expand deterministic communication capacity without adding a separate rack or consuming the processor’s integrated ports.

The module operates from a supply of 24 V DC and draws only 200 mA, resulting in total power dissipation of 4.8 W. Power enters through a 4-pin XD1 connector, whose a1 and a2 terminals carry the positive rail while b1 and b2 provide the return. All circuits are classified under Protection Class III and Overvoltage Category 2, so the installation may use a SELV or PELV power supply. The housing provides IP20 protection, making the module suitable for cabinet installation where dust ingress is limited and direct liquid exposure does not occur. These electrical characteristics assist with the selection of upstream power supplies, fuses, and appropriate cabinet climate controls.

For network integration, the device offers two RJ45 ports that are galvanically isolated to 1200 V DC for one minute, preventing ground loops between field wiring and low-voltage logic. Acting as the fieldbus master, it handles cyclic and acyclic traffic through PROFINET and EtherNet/IP. The pair of ports supports line or star network topologies, while embedded auto-negotiation manages the link speed without requiring manual configuration. The isolation barrier protects the controller from electrical potential differences originating on the machine frame, and the dual network connections provide flexible routing for connected field devices.