BECKHOFF

BECKHOFF BK5250 DeviceNet Compact Bus Coupler

SKU BK5250

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: BECKHOFF
  • Product No.: BK5250
  • Origin Germany
  • Product Type: Bus Couplers
  • Payment: T/T, Western Union
  • Weight: 0.1 kg
  • Shipping port: Xiamen
  • Warranty: 12 months

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Product Description

Description

The BECKHOFF BK5250 is a compact Bus Coupler designed to establish a direct connection between the DeviceNet fieldbus system and modular BECKHOFF Bus Terminals. As a communications adapter, this device efficiently bridges physical DeviceNet networks with modular K-bus I/O signals, enabling decentralized control architectures to interface with a wide range of digital, analog, and specialized terminal units.

Housed in a compact form factor, the BECKHOFF BK5250 features automatic data transfer rate detection, which simplifies system integration by adjusting automatically to the network baud rate. It supports up to 512 bytes of input data and 512 bytes of output data, accommodating high-density I/O configurations while optimizing communication performance on the DeviceNet network. Configuration and commissioning can be performed through the standard controller or using the dedicated BECKHOFF KS2000 configuration software package via the serial interface.

Features

  • Direct integration of modular BECKHOFF Bus Terminals into DeviceNet industrial networks.
  • Automatic baud rate detection for simplified network commissioning and setup.
  • Supports various DeviceNet operating modes, including polling, bit strobe, cyclic, and change of state (COS).
  • Integrated serial configuration interface for local diagnostics and configuration.
  • Robust electrical isolation between the power contacts and the internal logic supply.
  • Clear status and diagnostics via local LED indicators for power, K-bus status, and fieldbus communication.

Applications

  • Decentralized industrial automation and control systems using DeviceNet networks.
  • Machine building and production line integration requiring compact, high-density I/O distribution.
  • Interface translation between modular sensor/actuator signals and master DeviceNet controllers.

Technical Specifications

General

Parameter Specification
Manufacturer BECKHOFF
Model BK5250
Product Type DeviceNet Compact Bus Coupler
DeviceNet Type Communications adapter
Number of Bus Terminals 64 (up to 255 with K-bus extension)
Digital Peripheral Signals Max. 1,020 inputs/outputs
Analog Peripheral Signals Max. 256 inputs/outputs
Configuration Options Via KS2000 software or the master controller

Fieldbus and Communication

Parameter Specification
Fieldbus Protocol DeviceNet
Max. Input Data Image 512 bytes
Max. Output Data Image 512 bytes
Data Transfer Rates Automatic detection
Bus Interface 1 x 5-pin open pluggable connector (included)
Data Transfer Medium Screened, twisted copper wire with power supply, 5-pin
Operating Modes Bit strobe, polling, cyclic, change of state (COS)

Electrical

Parameter Specification
Power Supply (Logic) 24 V DC (-15% / +20%), through bus cable 11 to 25 V DC (conforms to DeviceNet specification)
Current Supply K-bus 1750 mA (1.75 A)
Power Contacts Voltage Max. 24 V DC
Power Contacts Current Capacity Max. 10 A
Electrical Isolation 500 V (power contact / supply voltage Bus Coupler)

Mechanical and Environmental

Parameter Specification
Weight Approx. 100 g
Operating Temperature -25 degC to +60 degC
Storage Temperature -40 degC to +85 degC
Protection Class IP20
Vibration and Shock Resistance Conforms to EN 60068-2-6 / EN 60068-2-27
EMC Immunity and Emission Conforms to EN 61000-6-2 / EN 61000-6-4
Installation Position Variable

Compliance and Approvals

Parameter Specification
Certifications CE, UL, ATEX, IECEx
ATEX Protection Class II 3 G Ex ec IIC T4 Gc
IECEx Protection Class Ex ec IIC T4 Gc

Diagnostics and Status Indicators

Interface / indicator Function
Power Supply LEDs (2x) Indicates local logic power and power contact status
K-bus LEDs (2x) Indicates local K-bus communication status and error states
Fieldbus LEDs (2x) Indicates DeviceNet communication activity and physical layer status
Serial Interface Physical connection point for local configuration using KS2000 software

Installation Guidelines

  1. Ensure all power sources feeding the bus coupler and the connected I/O terminals are completely de-energized before mounting.
  2. Mount the BECKHOFF BK5250 onto a standard 35 mm DIN rail (DIN EN 60715) in the designated mounting position.
  3. Securely slide the necessary BECKHOFF Bus Terminals onto the right side of the coupler until the side lock mechanism clicks into place.
  4. Connect the 5-pin open pluggable DeviceNet connector to the fieldbus cable following standard DeviceNet shielding and wiring practices.
  5. Apply the 24 V DC power supply to the logic input and the power contacts, ensuring polarity is correct and voltage tolerances are within specification.
  6. Verify communication using the integrated diagnostic LEDs upon powering on the system.

Configuration and Commissioning

The BECKHOFF BK5250 supports automatic detection of the DeviceNet network transmission speed. For manual parameter configuration, diagnostic reading, or mapping adjustments, connect a PC running the BECKHOFF KS2000 configuration software to the integrated serial configuration port of the bus coupler. Alternatively, parameters can be set directly via the master DeviceNet controller using standard EDS files.

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
How many Bus Terminals can be connected to the BECKHOFF BK5250?
The BECKHOFF BK5250 can host up to 64 modular Bus Terminals directly on its local K-bus interface, which can be extended up to 255 terminals when utilizing a K-bus extension system.
Does the BECKHOFF BK5250 require manual baud rate configuration?
No, the BECKHOFF BK5250 features automatic baud rate detection, allowing the coupler to automatically match and synchronize with the existing DeviceNet network communication speed during startup.
What configuration software is used with the BECKHOFF BK5250?
The BECKHOFF BK5250 can be configured directly from the master DeviceNet controller or locally through the serial configuration interface using the BECKHOFF KS2000 software tool.
What is the maximum current capacity of the BECKHOFF BK5250 K-bus supply?
The BECKHOFF BK5250 features an integrated K-bus power supply capable of delivering a maximum current of 1750 mA (1.75 A) to the internal electronic modules of the attached Bus Terminals.
Is the BECKHOFF BK5250 approved for use in hazardous areas?
Yes, the BECKHOFF BK5250 carries ATEX and IECEx certifications with the marking Ex ec IIC T4 Gc, making it suitable for use in Zone 2 hazardous locations when installed inside an appropriately rated enclosure.
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BECKHOFF BK5250 DeviceNet Compact Bus Coupler

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

  • Product No.: BK5250

  • Country of origin:Germany

  • Product Type: Bus Couplers

  • Payment: T/T, Western Union

  • Weight: 100g

  • Shipping port: Xiamen

  • Warranty: 12 months

Quantity
View full details

Product Description

Description

The BECKHOFF BK5250 is a compact Bus Coupler designed to establish a direct connection between the DeviceNet fieldbus system and modular BECKHOFF Bus Terminals. As a communications adapter, this device efficiently bridges physical DeviceNet networks with modular K-bus I/O signals, enabling decentralized control architectures to interface with a wide range of digital, analog, and specialized terminal units.

Housed in a compact form factor, the BECKHOFF BK5250 features automatic data transfer rate detection, which simplifies system integration by adjusting automatically to the network baud rate. It supports up to 512 bytes of input data and 512 bytes of output data, accommodating high-density I/O configurations while optimizing communication performance on the DeviceNet network. Configuration and commissioning can be performed through the standard controller or using the dedicated BECKHOFF KS2000 configuration software package via the serial interface.

Features

  • Direct integration of modular BECKHOFF Bus Terminals into DeviceNet industrial networks.
  • Automatic baud rate detection for simplified network commissioning and setup.
  • Supports various DeviceNet operating modes, including polling, bit strobe, cyclic, and change of state (COS).
  • Integrated serial configuration interface for local diagnostics and configuration.
  • Robust electrical isolation between the power contacts and the internal logic supply.
  • Clear status and diagnostics via local LED indicators for power, K-bus status, and fieldbus communication.

Applications

  • Decentralized industrial automation and control systems using DeviceNet networks.
  • Machine building and production line integration requiring compact, high-density I/O distribution.
  • Interface translation between modular sensor/actuator signals and master DeviceNet controllers.

Technical Specifications

General

Parameter Specification
Manufacturer BECKHOFF
Model BK5250
Product Type DeviceNet Compact Bus Coupler
DeviceNet Type Communications adapter
Number of Bus Terminals 64 (up to 255 with K-bus extension)
Digital Peripheral Signals Max. 1,020 inputs/outputs
Analog Peripheral Signals Max. 256 inputs/outputs
Configuration Options Via KS2000 software or the master controller

Fieldbus and Communication

Parameter Specification
Fieldbus Protocol DeviceNet
Max. Input Data Image 512 bytes
Max. Output Data Image 512 bytes
Data Transfer Rates Automatic detection
Bus Interface 1 x 5-pin open pluggable connector (included)
Data Transfer Medium Screened, twisted copper wire with power supply, 5-pin
Operating Modes Bit strobe, polling, cyclic, change of state (COS)

Electrical

Parameter Specification
Power Supply (Logic) 24 V DC (-15% / +20%), through bus cable 11 to 25 V DC (conforms to DeviceNet specification)
Current Supply K-bus 1750 mA (1.75 A)
Power Contacts Voltage Max. 24 V DC
Power Contacts Current Capacity Max. 10 A
Electrical Isolation 500 V (power contact / supply voltage Bus Coupler)

Mechanical and Environmental

Parameter Specification
Weight Approx. 100 g
Operating Temperature -25 degC to +60 degC
Storage Temperature -40 degC to +85 degC
Protection Class IP20
Vibration and Shock Resistance Conforms to EN 60068-2-6 / EN 60068-2-27
EMC Immunity and Emission Conforms to EN 61000-6-2 / EN 61000-6-4
Installation Position Variable

Compliance and Approvals

Parameter Specification
Certifications CE, UL, ATEX, IECEx
ATEX Protection Class II 3 G Ex ec IIC T4 Gc
IECEx Protection Class Ex ec IIC T4 Gc

Diagnostics and Status Indicators

Interface / indicator Function
Power Supply LEDs (2x) Indicates local logic power and power contact status
K-bus LEDs (2x) Indicates local K-bus communication status and error states
Fieldbus LEDs (2x) Indicates DeviceNet communication activity and physical layer status
Serial Interface Physical connection point for local configuration using KS2000 software

Installation Guidelines

  1. Ensure all power sources feeding the bus coupler and the connected I/O terminals are completely de-energized before mounting.
  2. Mount the BECKHOFF BK5250 onto a standard 35 mm DIN rail (DIN EN 60715) in the designated mounting position.
  3. Securely slide the necessary BECKHOFF Bus Terminals onto the right side of the coupler until the side lock mechanism clicks into place.
  4. Connect the 5-pin open pluggable DeviceNet connector to the fieldbus cable following standard DeviceNet shielding and wiring practices.
  5. Apply the 24 V DC power supply to the logic input and the power contacts, ensuring polarity is correct and voltage tolerances are within specification.
  6. Verify communication using the integrated diagnostic LEDs upon powering on the system.

Configuration and Commissioning

The BECKHOFF BK5250 supports automatic detection of the DeviceNet network transmission speed. For manual parameter configuration, diagnostic reading, or mapping adjustments, connect a PC running the BECKHOFF KS2000 configuration software to the integrated serial configuration port of the bus coupler. Alternatively, parameters can be set directly via the master DeviceNet controller using standard EDS files.

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How many Bus Terminals can be connected to the BECKHOFF BK5250?

The BECKHOFF BK5250 can host up to 64 modular Bus Terminals directly on its local K-bus interface, which can be extended up to 255 terminals when utilizing a K-bus extension system.

Does the BECKHOFF BK5250 require manual baud rate configuration?

No, the BECKHOFF BK5250 features automatic baud rate detection, allowing the coupler to automatically match and synchronize with the existing DeviceNet network communication speed during startup.

What configuration software is used with the BECKHOFF BK5250?

The BECKHOFF BK5250 can be configured directly from the master DeviceNet controller or locally through the serial configuration interface using the BECKHOFF KS2000 software tool.

What is the maximum current capacity of the BECKHOFF BK5250 K-bus supply?

The BECKHOFF BK5250 features an integrated K-bus power supply capable of delivering a maximum current of 1750 mA (1.75 A) to the internal electronic modules of the attached Bus Terminals.

Is the BECKHOFF BK5250 approved for use in hazardous areas?

Yes, the BECKHOFF BK5250 carries ATEX and IECEx certifications with the marking Ex ec IIC T4 Gc, making it suitable for use in Zone 2 hazardous locations when installed inside an appropriately rated enclosure.

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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