CU2608 by Beckhoff

The Beckhoff CU2608 module delivers robust EtherCAT junction capabilities as part of the CU EtherCAT Junctions series engineered for industrial automation. This screw-in module integrates two high-speed 2 CAN interfaces with electrically isolated channels to prevent ground loops and ensure signal integrity across distributed CAN networks. Powered by a 100-240 VAC supply, the unit operates with a modest 14.5 W power consumption that minimizes heat generation in densely packed control cabinets. Segmented EtherCAT connectivity eliminates the need for external switches, simplifying network topologies and reducing system footprint. Its compact profile and rugged construction support reliable operation in demanding production environments.

Detailed technical specifications emphasize resilience and versatility. The CU2608 accepts a wide input voltage range of 100-240 VAC and incorporates electrical isolation on each CAN port for enhanced safety. Mounting is simplified via a screw-in module design (TB712 terminal block ordered separately), securing the device firmly even under high vibration. Eight integrated Ethernet ports operate at 10/100 Mbits/s with auto-negotiation, adapting link speeds to connected devices automatically. It boasts an extended operating temperature span from –30°C to +70°C and achieves IP65/IP66/IP67 protection ratings, shielding internal electronics from dust ingress and high-pressure water jets.

Operational features and performance parameters are optimized for continuous industrial use. The unit supports cable lengths up to 100 m of shielded twisted pair, extending network reach across large machine layouts without degradation. Automatic crossover detection and correction remove the need for dedicated crossover cables, while D-coded, 4-pin M12 Ethernet interfaces provide secure connections that resist shock and vibration. In unmanaged store-and-forward switching mode, complete Ethernet frames are buffered to prevent packet loss and maintain data integrity under burst traffic. A dedicated hardware diagnostic LED per channel offers clear, real-time status feedback, accelerating troubleshooting and minimizing downtime.

System integration is streamlined by the CU2608’s compatibility with standard EtherCAT masters and CANopen layers, enabling seamless embedding into existing control architectures. The absence of external switches reduces wiring complexity and lowers total cost of ownership in centralized and decentralized automation layouts. Its rugged design and ingress protection make it ideal for applications ranging from packaging machinery to food and beverage wash-down environments. With its blend of high availability, electrical safety, and protocol bridging, the Beckhoff CU2608 module addresses the connectivity requirements of modern industrial systems.