CU1128 - Beckhoff EtherCAT Components
Beckhoff introduces the CU1128 Infrastructure Component, a high-performance EtherCAT Component engineered to couple multiple junctions for reliable automation networking.

| Brand | Beckhoff |
| Product Type | EtherCAT Components |
| Product | CU1128 |
CU1128 Beckhoff EtherCAT Components Technical Specifications
| Specification | Value |
|---|---|
| Task within EtherCAT system | coupling of EtherCAT junctions |
| Data transfer medium | Ethernet/EtherCAT cable (min. Cat.5), shielded |
| Bus interface | 8 x RJ45 |
| Distance between stations | max. 100 m (100BASE-TX) |
| Protocol | EtherCAT |
| Delay | approx. 1 µs per port |
| Data transfer rates | 100 Mbit/s |
| Configuration | not required |
| Power supply | 24 (18â¦30) V DC, 3-pin connection (+, -, PE) |
| Operating temperature | -25...+60°C |
| Storage temperature | -40...+85°C |
| Vibration/shock resistance | conforms to EN 60068-2-6/EN 60068-2-27 |
| EMC immunity/emission | conforms to EN 61000-6-2/EN 61000-6-4 |
| Protect. rating/installation pos. | IP20/variable |
| Approvals/markings | CE, UL |
| Current consumption 24 V DC | typ. 185 mA |
| Dimensions (W x H x D) | 122Â mm x 100Â mm x 38Â mm |
The Beckhoff CU1128 Infrastructure Component is designed to strengthen automation networks by providing efficient coupling of EtherCAT junctions. Featuring 8 x RJ45 ports, this unit ensures seamless connectivity with Ethernet/EtherCAT Cat.5 shielded cables over distances up to 100 m, supporting data transfer rates of 100 Mbit/s. With a minimal delay of just 1 µs per port and no configuration required, it guarantees smooth integration in demanding industrial setups.
Built to endure challenging environments, the CU1128 operates within -25°C to +60°C and withstands vibration and shock in compliance with EN 60068-2-6/27 standards. Its 24 V DC supply and typical current consumption of 185 mA offer energy-efficient performance, while EMC immunity and emission compliance per EN 61000-6-2/6-4 ensure reliable operation even in electrically noisy conditions. The compact design, with dimensions of 122 x 100 x 38 mm and IP20 rating, makes it suitable for DIN rail installations where space and durability are critical.
Applications of the Beckhoff CU1128 EtherCAT Component include machine control, process automation, and distributed I/O systems where high-speed data exchange and precise synchronization are essential. CE and UL approvals highlight its global reliability and safety standards. By integrating the CU1128, industries benefit from faster commissioning, enhanced scalability, and robust network stability—making it a trusted choice for engineers and system integrators worldwide.




