Beckhoff BK9103

SKU: BK9103

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$1,280.00

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Beckhoff BK9103 – Overview

The Beckhoff BK9103 is a PROFINET RT bus coupler designed to connect the modular Beckhoff Bus Terminal system to a PROFINET network. It supports up to 64 connected bus terminals and can be expanded up to 255 when using the K-bus extension. The device offers 10 Mbit/s and 100 Mbit/s Ethernet speeds and features a built-in two-port RJ45 switch for flexible line or star topologies.

This coupler simplifies I/O station wiring and automates terminal recognition and process image mapping, making it ideal for industrial automation systems requiring modular, high-performance infrastructure.

Key Features

Supports PROFINET RT protocol Class B
Gigabit Ethernet compatibility: 10/100 Mbit/s automatic recognition
Two RJ45 ports provide integrated Ethernet switch for line topology
Supports up to 64 bus terminals standard; 255 with K-bus extension
512 bytes input / 512 bytes output process image capacity
24 V DC power supply (-15% / +20%)
Automated I/O mapping of connected bus terminals
Line topology support: up to 20 devices cascaded, max 2 km length
Electrical isolation: 500 V (power contacts / supply / fieldbus)
IP20 protection rating, 35 mm DIN-rail mountable

Technical Specifications

Part Numbers:
– BK9103
– BK 9103
Protocol: PROFINET RT (Class B)
Data Transfer Rate: 10/100 Mbit/s (automatic recognition)
Bus Interface: 2 × RJ45 ports, integrated switch
Max Bus Terminals: 64 standard, 255 with K-bus extension
Max Process Data: 512 bytes input / 512 bytes output
Power Supply: 24 V DC (-15% / +20%)
Current Consumption: 70 mA + (K-bus current)/4, max 500 mA
K-bus Power Supply Capacity: up to 1750 mA
Topology Support: Line or star wiring, up to 20 devices cascaded, max 2 km line length
Max Distance Between Stations: 100 m
Electrical Isolation (Dielectric Strength): 500 V
Operating Temperature: -25 °C … +60 °C
Storage Temperature: -40 °C … +85 °C
Weight: Approx. 170 g
Dimensions (W × H × D): 51 mm × 100 mm × 69 mm
Mounting: 35 mm DIN-rail
Protection Rating: IP20
Manufacturer: Beckhoff Automation

Weight: 0.10 – 0.23 kg (0.22 – 0.50 lb)
Packed dimensions: 12 × 7 × 6 cm (4.7 × 2.8 × 2.4 in)

Applications

Modular I/O systems requiring PROFINET RT connectivity
Machine control panels with distributed bus terminals
Industrial plants with flexible station topology (line or star)
Automation setups where up to 64 (or expanded 255) terminals are needed

Why Choose Beckhoff BK9103

Enables seamless PROFINET integration for Beckhoff bus terminal systems
High flexibility in topology and scalability for large I/O counts
Built-in line topology support reduces wiring complexity and cost
Compact, industrial-grade design with global certifications

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The Beckhoff BK9103 PROFINET Bus Coupler is available for order and ships worldwide.

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Description

Beckhoff BK9103 – Overview

Key Features

Supports PROFINET RT protocol Class B
Gigabit Ethernet compatibility: 10/100 Mbit/s automatic recognition
Two RJ45 ports provide integrated Ethernet switch for line topology
Supports up to 64 bus terminals standard; 255 with K-bus extension
512 bytes input / 512 bytes output process image capacity
24 V DC power supply (-15% / +20%)
Automated I/O mapping of connected bus terminals
Line topology support: up to 20 devices cascaded, max 2 km length
Electrical isolation: 500 V (power contacts / supply / fieldbus)
IP20 protection rating, 35 mm DIN-rail mountable

Technical Specifications

Part Numbers:
– BK9103
– BK 9103
Protocol: PROFINET RT (Class B)
Data Transfer Rate: 10/100 Mbit/s (automatic recognition)
Bus Interface: 2 × RJ45 ports, integrated switch
Max Bus Terminals: 64 standard, 255 with K-bus extension
Max Process Data: 512 bytes input / 512 bytes output
Power Supply: 24 V DC (-15% / +20%)
Current Consumption: 70 mA + (K-bus current)/4, max 500 mA
K-bus Power Supply Capacity: up to 1750 mA
Topology Support: Line or star wiring, up to 20 devices cascaded, max 2 km line length
Max Distance Between Stations: 100 m
Electrical Isolation (Dielectric Strength): 500 V
Operating Temperature: -25 °C … +60 °C
Storage Temperature: -40 °C … +85 °C
Weight: Approx. 170 g
Dimensions (W × H × D): 51 mm × 100 mm × 69 mm
Mounting: 35 mm DIN-rail
Protection Rating: IP20
Manufacturer: Beckhoff Automation