CU1123-0010 Beckhoff
Wake Industrial LLC is not an authorized distributor of this product.
The Beckhoff CU1123-0010 is part of the CU EtherCAT Junctions series and is designed for coupling EtherCAT junctions in automation systems. It features a 3 x RJ45 bus interface, supports data rates up to 100 Mbit/s, and can be installed on a 35 mm DIN rail. The unit operates at 24 VDC supply voltage, uses IP20 protection class, and allows variable installation positions with a maximum station distance of 300 meters.
Internal Product Review
The CU1123-0010 is a Beckhoff EtherCAT junction for coupling EtherCAT junctions, featuring 3 x RJ45 bus interfaces and a 100 Mbit/s data rate. Support for Distributed Clocks and Hot Connect gives the unit excellent synchronization and service flexibility in EtherCAT networks. DIN rail mounting and IP20 protection make the device a strong choice for clean cabinet installations.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
Beckhoff’s CU1123-0010 belongs to the CU EtherCAT Junctions series and functions as a compact multiport junction for segmenting EtherCAT branches inside control cabinets. The unit couples several subordinate lines to a single trunk without disrupting the deterministic communication required by coordinated automation equipment. This arrangement supports star or tree network topologies while allowing connected controllers, drives, and I/O devices to exchange time-sensitive process data across separate machine sections.
The junction routes EtherCAT telegrams through three front-mounted RJ45 sockets at a sustained data rate of 100 Mbit/s. Its internal electronics draw only 100 mA from the control circuit, limiting the load placed on the cabinet power distribution system. The logic operates from a 24 V DC field supply connected through a spring-loaded, three-pole terminal that also provides a protective conductor for functional grounding. Rapid plant reconfiguration is supported by the EtherCAT Hot Connect feature, which allows individual branches to be inserted or removed without halting adjacent axes. The device also forwards Distributed Clocks information with nanosecond-level alignment, preserving synchronized timing for motion control and other coordinated operations. Its low current demand allows multiple junctions to share a low-current backplane feed when the available supply capacity is sufficient.
Cable runs may extend up to 300 m between stations when compliant, shielded twisted-pair media are used. The assembly has an IP20 enclosure rating, making it suitable for installation in protected indoor cabinets that prevent exposure to water and excessive contamination. Snap-locking clips attach the housing directly to a 35 mm DIN rail in accordance with EN 60715, and the variable mounting position allows installation in any orientation. Signal integrity is maintained over the required CAT 5 transmission medium, which uses four-wire AWG22 copper conductors with continuous shielding. The junction remains transparent to the EtherCAT protocol, allowing the master to communicate with every downstream node as a native network device without assigning separate addresses to the junction itself.
