BECKHOFF BK9105 EtherNet/IP Bus Coupler

SKU BK9105

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12-month warranty
Free returns within 30 days

Manufacturer: BECKHOFF
Product No.: BK9105
Country of origin:Germany
Product Type: Bus Coupler
Payment: T/T, Western Union
Weight: 170g
Dimensions: 10 x 5 x 3 cm
Shipping port: Xiamen
Warranty: 12 months

Description

The BECKHOFF BK9105 is an EtherNet/IP Bus Coupler designed to connect EtherNet/IP networks to the modular Beckhoff Bus Terminals. Acting as the head station of an electronic terminal block, the coupler converts telegrams from the higher-level fieldbus system into the bit-level signals of the internal Bus Terminals. The BK9105 features an integrated 2-channel switch with two RJ45 interfaces, enabling implementation in line topologies without requiring additional external switches.

This bus coupler supports up to 64 Bus Terminals directly, which can be expanded up to 255 terminals using K-bus extension technology. It handles up to 492 bytes of input data and 492 bytes of output data over EtherNet/IP. Configuration and parameterization of the connected I/O stations are managed via the KS2000 configuration software or through the controller using standard configuration tools. The unit is powered by a 24 V DC supply and provides internal current to the K-bus to support connected system terminals.

Features

Connects EtherNet/IP networks to modular BECKHOFF Bus Terminals
Integrated 2-channel switch with 2 x RJ45 ports for line and star wiring topologies
Supports up to 64 Bus Terminals natively, extendable up to 255 terminals via K-bus extension
Process data communication up to 492 bytes input and 492 bytes output
Automatic detection of 10/100 Mbit/s transmission rates
Configurable via KS2000 software
Electrical isolation across power contacts, supply voltage, and fieldbus interfaces

Applications

Distributed industrial automation and machine control architectures
Modular machine building requiring flexible I/O expansion via EtherNet/IP
EtherNet/IP network node integration for digital and analog sensor/actuator arrays
Process and factory automation lines utilizing line or star Ethernet topologies

Technical Specifications

General

Parameter	Specification
Manufacturer	BECKHOFF
Model	BK9105
Product Type	EtherNet/IP Bus Coupler
Country of Origin	Germany

Communication and Fieldbus

Parameter	Specification
Protocol	EtherNet/IP
Data transfer rates	10/100 Mbit/s (automatic recognition)
Bus interface	2 x RJ45 (2-channel switch)
Data transfer medium	4 x 2 twisted pair copper cable; category 3 (10 Mbit/s), category 5 (100 Mbit/s)
Max. fieldbus data	492 byte input and 492 byte output
Topology	Line or star wiring
Cascading	Up to 20 BK9103 or max. line length 2 km
Distance between stations	100 m between hub/switch and bus coupler or between bus coupler and bus coupler

Terminal and I/O Capacity

Parameter	Specification
Number of Bus Terminals	64 (255 with K-bus extension)
Digital peripheral signals	3,936 inputs/outputs
Analog peripheral signals	122 inputs/outputs

Electrical

Parameter	Specification
Power supply	24 V DC (-15 % / +20 %)
Input current	70 mA + (total K-bus current)/4, 500 mA max.
Starting current	2.5 x continuous current
Recommended fuse	≤ 10 A
Current supply K-bus	1750 mA
Power contacts	Max. 24 V DC / max. 10 A
Electrical isolation	500 V (power contact / supply voltage / fieldbus)

Mechanical and Environmental

Parameter	Specification
Weight	Approx. 170 g
Operating temperature	-25 to +60 degC
Storage temperature	-40 to +85 degC
Relative humidity	95 %, no condensation
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

Installation Guidelines

Ensure all power supplies are switched off and isolated before beginning installation or wiring work.
Verify that the mounting rail is securely installed and free from debris.
Mount the BECKHOFF BK9105 Bus Coupler onto the DIN rail by clipping it into position according to mechanical layout guidelines.
Attach downstream Bus Terminals in the correct sequence, ensuring the K-bus connections and power contacts latch properly.
Connect the 24 V DC power supply and system ground to the designated terminals, verifying voltage levels and polarity.
Connect the Ethernet cables to the RJ45 ports for integration into the EtherNet/IP network.
Power on the system and verify operational status via the diagnostic LEDs before commissioning the network configuration.

FAQ

What is the primary function of the BECKHOFF BK9105?

The BECKHOFF BK9105 functions as an EtherNet/IP Bus Coupler that connects an EtherNet/IP network to modular BECKHOFF Bus Terminals, translating fieldbus telegrams into internal K-bus signals.

How many Bus Terminals can be connected to the BK9105?

The BECKHOFF BK9105 supports up to 64 Bus Terminals directly, and this capacity can be expanded up to 255 Bus Terminals utilizing K-bus extension technology.

What network interface does the BK9105 use?

The BECKHOFF BK9105 is equipped with two RJ45 ports configured as an integrated 2-channel switch, allowing for straightforward line or star network topologies without external switches.

What power supply requirements does the BK9105 need?

The BECKHOFF BK9105 operates on a 24 V DC power supply (-15% / +20%) and provides up to 1750 mA current supply to the internal K-bus for connected terminals.

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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.

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TECHNICAL SPECIFICATIONS

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