Beckhoff BK1250 – Overview The Beckhoff BK1250 is a compact EtherCAT bus coupler designed to integrate traditional K-Bus terminals into an EtherCAT network. It allows seamless communication between EtherCAT and standard Bus Terminals, enabling mixed use of both types in one I/O station. This coupler supports up to 64 Bus Terminals, or up to 255 when used with a K-Bus extension, offering high flexibility for distributed I/O systems. Its compact DIN-rail design, 24 V DC supply, and reliable isolation make it ideal for modular automation environments. Key Features Connects EtherCAT network to Beckhoff K-Bus terminals Supports up to 64 Bus Terminals (255 with K-Bus extension) High-speed data transmission up to 100 Mbit/s Compact housing for DIN-rail mounting Automatic terminal recognition and process image mapping Electrical isolation between system and field levels Power contacts for field supply up to 10 A at 24 V DC IP20 protection rating for control cabinet use Technical Specifications Part Numbers: – BK1250 – BK 1250 Protocol: EtherCAT Maximum Bus Terminals: 64 (255 with extension) Data Transfer Rate: 100 Mbit/s Input/Output Data: Up to 1024 bytes each Power Supply: 24 V DC (–15% / +20%) Power Contact Load: Max. 24 V DC / 10 A Current Supply (K-Bus): Max. 500 mA Electrical Isolation: 500 V (power, supply, and communication separated) Operating Temperature: –25 °C … +60 °C Storage Temperature: –40 °C … +85 °C Protection Rating: IP20 Mounting: 35 mm DIN-rail Weight: Approx. 55 g Manufacturer: Beckhoff Automation Weight: 0.10 – 0.23 kg (0.22 – 0.50 lb) Packed dimensions: 12 × 7 × 6 cm (4.7 × 2.8 × 2.4 in) Applications Integration of legacy Bus Terminals (K-Bus) into EtherCAT systems Modular I/O architectures in compact control panels High-performance distributed automation with mixed terminal types Machine and process control systems requiring flexible I/O expansion Why Choose Beckhoff BK1250 Seamless bridge between EtherCAT and K-Bus terminals Compact, durable design for modern control panels Supports large I/O configurations without performance loss High isolation and industrial-grade reliability Order Now The Beckhoff BK1250 Compact EtherCAT Bus Coupler is available for order and ships worldwide.
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