BK2000 | Beckhoff Lightbus Bus Coupler 24 VDC, Fiber Optic, 2.5 Mbaud, 64 Terminals
Beckhoff · Cables & Connectivity
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.
Brand: Beckhoff · Category: Cables & Connectivity
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.
Specifications
| Manufacturer part number | BK2000 |
|---|---|
| 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) |
| Product type | Lightbus Bus Coupler |
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