CU1123-0010

CU1123-0010 is a Beckhoff component in the CU EtherCAT Junctions series. It couples EtherCAT junctions within an industrial communication system and uses the EtherCAT protocol. Three RJ45 bus interfaces provide network connections, while the 100 Mbit/s data rate supports real-time transmission. The supported transmission medium is shielded, four-wire CAT 5 Ethernet/EtherCAT cable with AWG22 conductors. A station can be located up to 300 m away, allowing junctions to be distributed across larger installations.

Distributed Clocks support synchronized operation among EtherCAT devices, and Hot Connect allows compatible sections to be connected or disconnected without reconfiguring the complete network. The unit operates from a 24 VDC supply with a tolerance of -15% to +20% and typically consumes 100 mA. Power is connected through a three-pole spring terminal with positive, negative, and protective-earth contacts.

The junction mounts on a 35 mm DIN rail in accordance with EN 60715, providing standard control-cabinet installation. Its installation position is variable, allowing flexible orientation within the enclosure. The IP20 protection class guards against contact with hazardous internal parts and entry by solid objects larger than 12.5 mm, but it does not provide water protection.