BK1120 - Beckhoff EtherCAT Coupler
Beckhoff BK1120 EtherCAT Terminals provide reliable coupling of Bus Terminals with EtherCAT networks, ensuring efficient automation control.
| Brand | Beckhoff |
| Product Type | EtherCAT Coupler |
| Product | BK1120 |
BK1120 Beckhoff EtherCAT Coupler Technical Specifications
| Specification | Value |
|---|---|
| Number of Bus Terminals | 64 (255 with K-bus extension) |
| Max. number of bytes fieldbus | 1024 byte input and 1024 byte output |
| Configuration possibility | via KS2000 or EtherCAT (ADS) |
| Data transfer medium | Ethernet/EtherCAT Cat.5 cable |
| Distance between stations | 100 m (100BASE-TX) |
| Data transfer rates | 100 Mbit/s |
| Bus interface | 2 x RJ45 |
| Current supply E-bus | 1750 mA |
| Input current | 70 mA + (total K-bus current)/4, 500Â mA max. |
| Power contacts | max. 24 V DC/max. 10 A |
| Electrical isolation | 500 V (power contact/supply voltage/Ethernet) |
| Operating temperature | -25…+60°C |
| Storage temperature | -40…+85°C |
| EMC immunity/emission | conforms to EN 61000-6-2/EN 61000-6-4 |
| Relative humidity | 95%, no condensation |
| Vibration/shock resistance | conforms to EN 60068-2-6/EN 60068-2-27 |
| Protect. rating/installation pos. | IP20/variable |
| Approvals/markings | CE, CCC, UL, ATEX, IECEx |
| Ex marking | ATEX: II 3 G Ex ec IIC T4 Gc IECEx: Ex ec IIC T4 Gc |
| Weight | approx. 150 g |
| Data transfer time | 0.01 ms in the case of 10 modules for 32 bit inputs and outputs each (without K-bus run-time) |
The Beckhoff BK1120 EtherCAT Coupler is engineered to deliver robust and precise connectivity in industrial automation. It supports up to 64 Bus Terminals, expandable to 255 with K-bus extension, ensuring flexibility for complex I/O architectures. With a maximum of 1024 bytes for both input and output, the device provides fast data handling across large-scale systems. It uses shielded Cat.5 Ethernet cables and achieves 100 Mbit/s transfer rates over distances up to 100 m, backed by dual RJ45 ports for secure networking. The E-bus supplies 1750 mA current, while power contacts handle up to 24 V DC / 10 A, making it suitable for demanding industrial environments.
Built to meet EN 61000-6-2/EN 61000-6-4 EMC standards, the BK1120 ensures stable operation even under heavy electrical noise. Electrical isolation of 500 V between supply, Ethernet, and power contacts enhances safety, while its IP20 housing provides practical installation flexibility. Lightweight at around 150 g, the coupler is reliable under tough conditions, withstanding vibrations, shocks, and humidity up to 95%. Approvals including CE, UL, ATEX, and IECEx reinforce its credibility for global industrial applications.
In practical use, the BK1120 EtherCAT Coupler is favored in manufacturing plants, process industries, and automation setups where modular, high-speed communication is vital. It is particularly valuable in scenarios requiring both compact design and scalable expansion, such as packaging systems, material handling equipment, and process monitoring. With short data transfer times of just 0.01 ms in specific configurations, it enables real-time responsiveness critical for modern automation. Its proven reliability and compliance with stringent safety and performance standards make it a trusted choice for engineers aiming for efficiency and long-term stability in their control systems.
