BECKHOFF

BECKHOFF BK8000 RS485 Bus Coupler

SKU BK8000

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  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: BECKHOFF
  • Product No.: BK8000
  • Origin Germany
  • Product Type: RS485 Bus Couplers
  • Payment: T/T, Western Union
  • Weight: 0.17 kg
  • Shipping port: Xiamen
  • Warranty: 12 months

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Product Description

Description

Designed for reliable industrial fieldbus integration, the Beckhoff BK8000 Bus Coupler links modular Beckhoff Bus Terminals directly to RS485 network architectures. This interface module processes up to 512 digital input/output channels and 256 analog input/output channels, translating physical peripheral signals into the open, documented RS485 serial communication protocol. System parameters and node addressing are easily set up using the KS2000 configuration software, ensuring seamless commissioning and diagnostics.

The BK8000 acts as the central decentralized head station, managing the internal K-bus system and distributing power to downstream terminal slices. With integrated galvanic isolation separating the fieldbus connection, the internal electronic components, and the 24 V DC power contacts, this bus coupler delivers excellent noise immunity and operational stability in demanding electrical environments.

Features

  • Efficient connection of up to 64 local Beckhoff Bus Terminals to an RS485 fieldbus network.
  • Direct configuration and advanced diagnostic mapping via the KS2000 software interface.
  • Galvanic isolation up to 500 V between power contacts, internal supply voltage, and the fieldbus interface.
  • Integrated power supply terminal designed to supply the internal K-bus with up to 1750 mA.
  • Support for standard serial transfer media via screened, twisted-pair copper cabling.

Applications

  • Industrial process automation and distributed control systems (DCS).
  • HVAC and building automation networks utilizing RS485 multidrop configurations.
  • Machine building and production lines requiring decentralized input/output blocks.
  • Energy management and remote telemetry systems.

Technical Specifications

Manufacturer BECKHOFF
Model / Part Number BK8000
Protocol Open, documented protocol
Bus Interface RS485 D-sub
Data Transfer Rates 9.6 kbaud, 19.2 kbaud, 38.4 kbaud
Max. Number of Bus Terminals 64
Max. Number of Fieldbus Bytes 512 byte input / 512 byte output
Digital Peripheral Signals 512 inputs / outputs
Analog Peripheral Signals 256 inputs / outputs
Power Supply 24 V DC (-15 % / +20 %)
Input Current 70 mA + (total K-bus current) / 4 (Max. 500 mA)
Starting Current 2.5 x continuous current
Recommended Fuse ≤ 10 A
K-Bus Current Supply 1750 mA
Power Contacts Max. 24 V DC / Max. 10 A
Electrical Isolation 500 V (power contact / supply voltage / fieldbus)
Operating Temperature 0 to +55 degC
Storage Temperature -25 to +85 degC
Relative Humidity 95 %, non-condensing
Vibration / Shock Resistance Conforms to EN 60068-2-6 / EN 60068-2-27
EMC Immunity / Emission Conforms to EN 61000-6-2 / EN 61000-6-4
Protection Rating IP20
Installation Position Variable
Weight Approx. 170 g

Installation Guidelines

  • Mounting: Install on standard 35 mm DIN rail (EN 60715) in a clean, dry control cabinet. The installation position is variable, but vertical alignment is recommended for optimal convection cooling.
  • Wiring: Always use shielded, twisted-pair copper cables (recommended cross-section: 2 x 0.25 mm²) for the RS485 communication line to prevent electromagnetic interference.
  • Grounding: Ensure the DIN rail and the PE (protective earth) connection points are bonded to a low-impedance ground plane.
  • K-bus Protection: Ensure the total current consumption of connected Bus Terminals does not exceed the maximum K-bus current supply of 1750 mA. Install a power feed terminal if current requirements exceed this limit.

Compliance and Certifications

  • CE: Yes
  • UL: Yes
  • ATEX Markings: II 3 G Ex ec IIC T4 Gc
  • IECEx Markings: Ex ec IIC T4 Gc
  • Marine Approval: DNV GL
Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
FAQ
What is the maximum number of Bus Terminals that can be connected to the BK8000?
The BK8000 RS485 Bus Coupler supports up to 64 local Bus Terminals.
How is the Beckhoff BK8000 configured?
Configuration and diagnostic parameterization are performed using the Beckhoff KS2000 software tool.
What data transfer rates does the BK8000 support?
The module supports data transfer rates of 9.6 kbaud, 19.2 kbaud, and 38.4 kbaud.
What is the maximum current capacity supplied to the K-bus?
The BK8000 supplies a maximum internal K-bus current of 1750 mA to power the connected terminal slices.
Is the BK8000 certified for use in hazardous areas?
Yes, the BK8000 carries ATEX (II 3 G Ex ec IIC T4 Gc) and IECEx certifications for Zone 2 hazardous environments.
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BECKHOFF BK8000 RS485 Bus Coupler

Only 10 item(s) left in stock
  • Manufacturer: BECKHOFF

  • Product No.: BK8000

  • Country of origin:Germany

  • Product Type: RS485 Bus Couplers

  • Payment: T/T, Western Union

  • Weight: 170g

  • Shipping port: Xiamen

  • Warranty: 12 months

Quantità
Visualizza dettagli completi

Product Description

Description

Designed for reliable industrial fieldbus integration, the Beckhoff BK8000 Bus Coupler links modular Beckhoff Bus Terminals directly to RS485 network architectures. This interface module processes up to 512 digital input/output channels and 256 analog input/output channels, translating physical peripheral signals into the open, documented RS485 serial communication protocol. System parameters and node addressing are easily set up using the KS2000 configuration software, ensuring seamless commissioning and diagnostics.

The BK8000 acts as the central decentralized head station, managing the internal K-bus system and distributing power to downstream terminal slices. With integrated galvanic isolation separating the fieldbus connection, the internal electronic components, and the 24 V DC power contacts, this bus coupler delivers excellent noise immunity and operational stability in demanding electrical environments.

Features

  • Efficient connection of up to 64 local Beckhoff Bus Terminals to an RS485 fieldbus network.
  • Direct configuration and advanced diagnostic mapping via the KS2000 software interface.
  • Galvanic isolation up to 500 V between power contacts, internal supply voltage, and the fieldbus interface.
  • Integrated power supply terminal designed to supply the internal K-bus with up to 1750 mA.
  • Support for standard serial transfer media via screened, twisted-pair copper cabling.

Applications

  • Industrial process automation and distributed control systems (DCS).
  • HVAC and building automation networks utilizing RS485 multidrop configurations.
  • Machine building and production lines requiring decentralized input/output blocks.
  • Energy management and remote telemetry systems.

Technical Specifications

Manufacturer BECKHOFF
Model / Part Number BK8000
Protocol Open, documented protocol
Bus Interface RS485 D-sub
Data Transfer Rates 9.6 kbaud, 19.2 kbaud, 38.4 kbaud
Max. Number of Bus Terminals 64
Max. Number of Fieldbus Bytes 512 byte input / 512 byte output
Digital Peripheral Signals 512 inputs / outputs
Analog Peripheral Signals 256 inputs / outputs
Power Supply 24 V DC (-15 % / +20 %)
Input Current 70 mA + (total K-bus current) / 4 (Max. 500 mA)
Starting Current 2.5 x continuous current
Recommended Fuse ≤ 10 A
K-Bus Current Supply 1750 mA
Power Contacts Max. 24 V DC / Max. 10 A
Electrical Isolation 500 V (power contact / supply voltage / fieldbus)
Operating Temperature 0 to +55 degC
Storage Temperature -25 to +85 degC
Relative Humidity 95 %, non-condensing
Vibration / Shock Resistance Conforms to EN 60068-2-6 / EN 60068-2-27
EMC Immunity / Emission Conforms to EN 61000-6-2 / EN 61000-6-4
Protection Rating IP20
Installation Position Variable
Weight Approx. 170 g

Installation Guidelines

  • Mounting: Install on standard 35 mm DIN rail (EN 60715) in a clean, dry control cabinet. The installation position is variable, but vertical alignment is recommended for optimal convection cooling.
  • Wiring: Always use shielded, twisted-pair copper cables (recommended cross-section: 2 x 0.25 mm²) for the RS485 communication line to prevent electromagnetic interference.
  • Grounding: Ensure the DIN rail and the PE (protective earth) connection points are bonded to a low-impedance ground plane.
  • K-bus Protection: Ensure the total current consumption of connected Bus Terminals does not exceed the maximum K-bus current supply of 1750 mA. Install a power feed terminal if current requirements exceed this limit.

Compliance and Certifications

  • CE: Yes
  • UL: Yes
  • ATEX Markings: II 3 G Ex ec IIC T4 Gc
  • IECEx Markings: Ex ec IIC T4 Gc
  • Marine Approval: DNV GL

What is the maximum number of Bus Terminals that can be connected to the BK8000?

The BK8000 RS485 Bus Coupler supports up to 64 local Bus Terminals.

How is the Beckhoff BK8000 configured?

Configuration and diagnostic parameterization are performed using the Beckhoff KS2000 software tool.

What data transfer rates does the BK8000 support?

The module supports data transfer rates of 9.6 kbaud, 19.2 kbaud, and 38.4 kbaud.

What is the maximum current capacity supplied to the K-bus?

The BK8000 supplies a maximum internal K-bus current of 1750 mA to power the connected terminal slices.

Is the BK8000 certified for use in hazardous areas?

Yes, the BK8000 carries ATEX (II 3 G Ex ec IIC T4 Gc) and IECEx certifications for Zone 2 hazardous environments.

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
Germany

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