BK2020 | Beckhoff Lightbus Bus Coupler 2.5 Mbaud
Beckhoff · Industrial Automation & Electrical
Description The Beckhoff BK2020 Lightbus Bus Coupler connects the Lightbus system to modular electronic terminal blocks, allowing flexible expansion up to 64 terminals or 255 with K-bus extension. It processes 1,020 digital and 128 analog signals per slave with automatic terminal recognition and high-speed data exchange via fiber optics. Technical Specifications Condition New/Never Used Surplus Brand Beckhoff Category Industrial Communication Part Number BK2020 Subcategory Bus Couplers Bus System Lightbus Data Transfer Rate 2.5 Mbaud Number of Bus Terminals Up to 64 (255 with K-bus extension) Digital Peripheral Signals 1,020 inputs/outputs Analog Peripheral Signals 128 inputs/outputs Configuration Via KS2000 or controller Bus Interface 2 x fiber-optic connector (Z1000/Z1010) Data Medium Plastic or HCS fiber Power Supply 24 V DC (-15%/+20%) K-bus Current Supply 1,750 mA Power Contacts Max. 24 V DC / 10 A Electrical Isolation 500 V (power/supply) Operating Temperature 0…55°C Storage Temperature -25…+85°C Relative Humidity 95%, non-condensing Mounting DIN rail Enclosure Protection IP20 Weight 0.33 lbs (approx. 150 g) Information About BK2020 The BK2020 is part of Beckhoff’s Economy plus series, developed to interface the Lightbus system with Beckhoff’s modular Bus Terminals. It automatically identifies connected terminals and maps their input/output signals to the process image without manual configuration. The unit supports up to 255 distributed terminals with K-bus extension, ensuring scalable system design across large installations. With 2.5 Mbaud transfer rate and support for both plastic and HCS optical fibers, the BK2020 enables fast, interference-free communication ideal for modern industrial environments. Key Features: Modular Expansion: Supports up to 64 terminals or 255 with K-bus extension for flexible I/O configurations. High Signal Processing: Handles up to 1,020 digital and 128 analog channels per slave. Auto-Configuration: Detects and assigns terminal data automatically for simplified setup. High-Speed Data Transmission: Operates at 2.5 Mbaud over optical fiber for rapid communication. Reliable Connectivity: Uses standard fiber-optic connectors (Z1000/Z1010) compatible with plastic or HCS fiber. Efficient Power Handling: Supplies 24 V DC with 1,750 mA K-bus current and 10 A power contacts. Electrical Isolation: 500 V isolation ensures safe separation of control and power circuits. Durable Operation: Functions reliably in environments from 0 to 55°C with high humidity resistance. The BK2020 delivers the reliability and precision required for distributed control systems and industrial automation networks.
Brand: Beckhoff · Category: Industrial Automation & Electrical
Key features
- Modular Expansion: Supports up to 64 terminals or 255 with K-bus extension for flexible I/O configurations.
- High Signal Processing: Handles up to 1,020 digital and 128 analog channels per slave.
- Auto-Configuration: Detects and assigns terminal data automatically for simplified setup.
- High-Speed Data Transmission: Operates at 2.5 Mbaud over optical fiber for rapid communication.
- Reliable Connectivity: Uses standard fiber-optic connectors (Z1000/Z1010) compatible with plastic or HCS fiber.
- Efficient Power Handling: Supplies 24 V DC with 1,750 mA K-bus current and 10 A power contacts.
- Electrical Isolation: 500 V isolation ensures safe separation of control and power circuits.
- Durable Operation: Functions reliably in environments from 0 to 55°C with high humidity resistance.
Specifications
| Manufacturer part number | BK2020 |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Beckhoff |
| Category | Industrial Communication |
| Part Number | BK2020 |
| Subcategory | Bus Couplers |
| Bus System | Lightbus |
| Data Transfer Rate | 2.5 Mbaud |
| Number of Bus Terminals | Up to 64 (255 with K-bus extension) |
| Digital Peripheral Signals | 1,020 inputs/outputs |
| Analog Peripheral Signals | 128 inputs/outputs |
| Configuration | Via KS2000 or controller |
| Bus Interface | 2 x fiber-optic connector (Z1000/Z1010) |
| Data Medium | Plastic or HCS fiber |
| Power Supply | 24 V DC (-15%/+20%) |
| K-bus Current Supply | 1,750 mA |
| Power Contacts | Max. 24 V DC / 10 A |
| Electrical Isolation | 500 V (power/supply) |
| Operating Temperature | 0…55°C |
| Storage Temperature | -25…+85°C |
| Relative Humidity | 95%, non-condensing |
| Mounting | DIN rail |
| Enclosure Protection | IP20 |
| Weight | 0.33 lbs (approx. 150 g) |
| Product type | Bus Couplers |
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