BECKHOFF BK3520 Fiber Optic Bus Coupler

Description

BECKHOFF BK3520 Fiber Optic Bus Coupler

Product Dimensions：

The Beckhoff BK3520 is a high-performance Economy plus Bus Coupler designed to bridge the gap between the Economy and Standard series. It specifically links the CANopen bus system to the modular Beckhoff Bus Terminal system.

Below is a detailed breakdown of the product in English.

## 1. Product Overview

The BK3520 acts as a gateway, connecting the CANopen fieldbus to a scalable set of electronic terminal blocks (Bus Terminals). Unlike the basic economy versions, the “plus” series offers enhanced memory and performance, making it suitable for medium-to-complex automation tasks.

## 2. Technical Specifications

Here are the core technical parameters for the BK3520:

## 3. Product Advantages

• Cost-Efficiency: Offers a higher performance ceiling than the standard Economy series while remaining more affordable than high-end PLC controllers.

• Modular Flexibility: You can mix and match digital, analog, and specialty terminals (like RS232, encoder interfaces, etc.) based on your specific needs.

• Standard Compliance: Fully supports the CANopen DS301 profile, ensuring compatibility with various third-party CANopen masters and configuration tools.

• Automatic Configuration: The coupler automatically maps the connected terminals into the process image, simplifying the setup of the I/O map.

• Compact Design: Small footprint saves valuable DIN rail space in electrical cabinets.

## 4. Important Considerations (Precautions)

• Terminal Limitations: While it supports up to 64 terminals, the actual limit may be dictated by the total current consumption on the K-bus (max 1750 mA).

• Termination Resistors: Ensure that both ends of the CANopen network are terminated with 120 $\Omega$ resistors to prevent signal reflections and data errors.

• Addressing: The node address and baud rate are set via DIP switches. Ensure these are configured before powering up the device.

• Isolation: Maintain proper galvanic isolation between the fieldbus and the internal electronics to prevent damage from power surges.

## 5. Product Applications

The BK3520 is widely used in distributed I/O systems where a central PLC controls remote hardware via CANopen. Common industries include:

• Machine Building: Controlling sensors and actuators on conveyor belts or packaging machines.

• Building Automation: Managing HVAC systems or lighting controls via a CANopen backbone.

• Material Handling: Real-time monitoring of automated storage and retrieval systems (AS/RS).

• Testing Rigs: Data acquisition from multiple analog sensors in laboratory environments.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

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