Part Number:

BK4020

Manufacturer: Beckhoff
Series: BK EtherCAT Bus Coupler Series
  • Rated 4.6 (12 total ratings)
  • Straightforward Pricing: No Rush Fees, No Credit Card Fees
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The Beckhoff BK4020 is part of the BK EtherCAT Bus Coupler Series and supports up to 64 Bus terminals, extendable to 255 with a K-bus extension. It offers a data transfer rate of 500 kbaud and can handle up to 512 digital and 32 analog peripheral signals. The power supply requirement is 24 V DC.

Part Number:

BK4020

Manufacturer: Beckhoff
Series: BK EtherCAT Bus Coupler Series
  • Rated 4.6 (12 total ratings)
  • Straightforward Pricing: No Rush Fees, No Credit Card Fees
  • Call for Expedited Shipping and Product Condition Options
Free Ground Shipping
Worldwide Delivery
Repair Options Available

The Beckhoff BK4020 is part of the BK EtherCAT Bus Coupler Series and supports up to 64 Bus terminals, extendable to 255 with a K-bus extension. It offers a data transfer rate of 500 kbaud and can handle up to 512 digital and 32 analog peripheral signals. The power supply requirement is 24 V DC.

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Product Description

Beckhoff produces the EtherCAT Bus Coupler, model number BK4020. In industrial automation, this device is essential because it serves as a link between the field devices and the EtherCAT network. It makes it easier for the central controller and different input/output terminals to communicate and exchange data, allowing industrial operations to be smoothly controlled and monitored. Connectivity to several bus terminals is one of the BK4020's key characteristics. For a variety of automation applications, this coupler provides flexibility and scalability by supporting up to 64 terminals directly and expanding to 255 with a K-bus extension. Comprehensive automation solutions are made possible by this wide connection, which combines a variety of sensors, actuators, and other field equipment.

With a 500 kbaud data transmission rate, the BK4020 is crucial for real-time data interchange in industrial settings. Because of the rapid and effective transmission of control signals made possible by this high-speed connection, linked devices may be precisely and responsively controlled. The coupler's adaptability is further increased by its capacity to handle up to 512 digital and 32 analog peripheral signals, which meets a variety of automation requirements. For dependable performance in industrial environments, the BK4020 is engineered with EMC immunity. Because electromagnetic interference is common in industrial settings and may interfere with communication and lead to problems, this feature shields the device from it.

By ensuring steady and error-free data transfer, the coupler's resistance to such interference adds to the automation system's overall dependability. The BK4020 runs on a 24 V DC power source, which is a typical industrial automation standard voltage. Because of this compatibility, integrating into current systems is made easier, and less new power conversion devices are required. In addition, the coupler's temperature ranges of 0°C to +55°C for operation and -25°C to +85°C for storage guarantee that it will perform in a variety of environmental circumstances. Wake Industrial gives consumers extra security and peace of mind by offering a one-year guarantee on this product.

BK4020 Technical Specifications

Number Of Bus Terminals: 64 (255 with K-bus extension)
Current Supply K-bus: 1750 mA
Power Contacts: max. 24 V DC/max. 10 A
Operating Storage Temperature: 0…+55°C/-25…+85°C
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
Max Digital Peripheral Signals: 512 inputs/outputs
Analog Peripheral Signals: 32 inputs/outputs
Data Transfer Rates: 500 kbaud
Bus Interface: 2 x D-sub plug, 9-pin, plug and socket with screening and vibration lock
Data Transfer Medium: LiYCY 3 x 2 x 0.22 mm²
Power Supply: 24 V DC (-15%/+20%)
Input Current: 70 mA + (total K-bus current)/4, 500 mA max.
Recommended Fuse: ≤ 10 A

Frequently Asked Questions about BK4020


Q: What is the Beckhoff BK4020 EtherCAT Bus Coupler?

A: The Beckhoff BK4020 is an EtherCAT Bus Coupler designed to bridge the EtherCAT network with field devices in industrial automation. It supports up to 64 Bus Terminals and is expandable to 255 using a K-bus extension. This coupler is a key component for industrial applications requiring connectivity between a central controller and multiple I/O devices.

Q: How many signals can the BK4020 handle?

A: The BK4020 can manage up to 512 digital peripheral signals and 32 analog peripheral signals, making it suitable for applications that require extensive signal processing and monitoring in industrial environments.

Q: What data transfer rate does the BK4020 offer?

A: The BK4020 EtherCAT Bus Coupler has a data transfer rate of 500 kbaud, which is vital for real-time data exchange. This high-speed communication ensures rapid, reliable signal transmission, providing precise control of connected devices in automation settings.

Q: What power supply is required for the BK4020?

A: The BK4020 operates on a 24 V DC power supply with a tolerance of -15% to +20%. This standard voltage makes it compatible with most industrial systems and helps simplify integration by reducing the need for additional power equipment.

Q: Does the BK4020 have EMC immunity?

A: Yes, the BK4020 is designed with robust EMC immunity, protecting it from electromagnetic interference common in industrial environments. This feature enhances the reliability and stability of data communication, preventing disruptions or malfunctions caused by external interference.

Internal Product Review

  • ‘‘This bus coupler offers versatile connectivity for many Bus Terminals. It supports extensive digital and analog signals and provides comprehensive I/O capabilities. The BK4020 ensures reliable communication with high EMC immunity.’’

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