Description
The Beckhoff BK2000 is a Lightbus Bus Coupler designed to connect Lightbus fieldbus systems to Beckhoff electronic terminal blocks. It supports up to 64 terminals with automatic configuration and provides high-speed fiber optic communication at 2.5 Mbaud, enabling efficient and reliable data exchange in modular automation systems.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Beckhoff |
| Category |
Industrial Automation |
| Part Number |
BK2000 |
| Subcategory |
Lightbus Bus Coupler |
| Bus System |
Lightbus |
| Supported Terminals |
Up to 64 terminals |
| Digital Peripheral Signals |
512 inputs/outputs |
| Analog Peripheral Signals |
128 inputs/outputs |
| Max. Fieldbus Data |
512 bytes input / 512 bytes output |
| Data Transfer Rate |
2.5 Mbaud |
| Bus Interface |
2 × standard fiber optic connectors (Z1000 plastic fiber / Z1010 HCS fiber) |
| Transmission Medium |
APF (1,000 µm plastic fiber) or HCS (200 µm) |
| Distance Between Stations |
Up to 45 m (APF fiber) / 300 m (HCS fiber) |
| Configuration Method |
Via KS2000 software or controller |
| Power Supply Voltage |
24 V DC (-15% / +20%) |
| Input Current |
70 mA + (total K-bus current)/4, max. 500 mA |
| Starting Current |
Approx. 2.5 × continuous current |
| Recommended Fuse |
≤ 10 A |
| K-Bus Current Supply |
1750 mA |
| Power Contacts |
Max. 24 V DC / 10 A |
| Electrical Isolation |
500 V (power contact/supply voltage) |
| Protection Rating |
IP20 |
| Operating Temperature |
0°C to +55°C |
| Storage Temperature |
-25°C to +85°C |
| Relative Humidity |
Up to 95%, non-condensing |
| Dimensions (W × H × D) |
47 mm × 68 mm × 94 mm |
| Weight |
0.88 lbs (approx. 150 g) |
Information About BK2000
The BK2000 is part of Beckhoff’s Bus Coupler family and serves as a communication bridge between the Lightbus system and modular Beckhoff I/O terminals. It enables flexible system expansion by supporting up to 64 terminals, with automatic input/output mapping to the process image for simplified configuration. The unit employs fiber optic transmission, using APF or HCS fibers for long-distance communication—up to 300 meters—ensuring high-speed and noise-immune data transfer. With a data rate of 2.5 Mbaud and optimized telegram structure, the BK2000 achieves transmission times as fast as 25 µs for 32-bit data exchange. This makes it ideal for time-critical industrial automation environments that demand precision, safety, and modular expandability.
Key Features:
- High-Speed Lightbus Communication: Operates at 2.5 Mbaud for rapid data exchange between field devices and control systems.
- Modular Expansion: Supports up to 64 terminals (512 digital I/Os and 128 analog I/Os) for scalable automation setups.
- Automatic Configuration: Recognizes connected terminals and maps inputs/outputs automatically to the process image.
- Fiber Optic Connectivity: Uses APF or HCS fibers for reliable long-distance and interference-free data transmission.
- Flexible Station Distances: Supports 45 m with plastic fibers and up to 300 m with HCS fibers between stations.
- Strong Power Handling: 24 VDC operation with 10 A power contacts ensures stable and efficient energy distribution.
- Robust Electrical Isolation: 500 V isolation enhances system safety and signal integrity.
- Industrial Reliability: IP20-rated, DIN-rail mountable design with CE compliance ensures long-term stable performance.
The BK2000 delivers the reliability and precision required for Lightbus-based automation systems, distributed I/O control, and modular industrial communication networks.
