BK9103-1005

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The BK9103-1005 offers 512 byte input and output fieldbus capacity, supports 64 bus terminals, and operates with a PROFINET RT protocol. Part of the BK EtherCAT Bus Coupler Series by Beckhoff, it features a weight of approximately 170 grams and runs on a 24 V DC power supply with a current supply K-bus of 1750 mA.

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Product Description:

The Beckhoff BK9103-1005 is a bus coupler from the BK EtherCAT Bus Coupler Series, designed for use in industrial automation systems. This device is capable of supporting up to 64 bus terminals, which can be extended to 255 terminals with a K-bus extension, offering flexibility and scalability for larger applications. The bus coupler supports 512 bytes of input and 512 bytes of output on the fieldbus, allowing it to handle high volumes of data in real-time operations.

The BK9103-1005 can manage 512 digital peripheral input/output signals and supports 256 analog peripheral signals for inputs and outputs. These capabilities make it suitable for various automation tasks, from controlling digital I/O devices to handling analog data from sensors and actuators. The device operates using the PROFINET RT (Class B) protocol, which ensures fast and reliable communication in real-time applications, making it ideal for time-critical processes in industrial environments.

Configuration is done via the KS2000 software, providing a straightforward setup and customization process. The device offers 10/100 Mbit/s data transfer rates with automatic recognition of the transmission rate. It uses two RJ45 bus interfaces for communication, supporting line or star wiring topologies, which adds flexibility in network design. The data transfer medium includes 4 x 2 twisted pair copper cables, with support for category 3 cables (10 Mbit/s) and category 5 cables (100 Mbit/s). In terms of power, the BK9103-1005 operates with a 24 V DC power supply, with an input current of 70 mA plus the K-bus current, and a maximum input current of 500 mA. The K-bus current supply is rated at 1750 mA, ensuring sufficient power for connected terminals. The starting current is approximately 2.5 times the continuous current, and the device uses a recommended fuse of ≤ 10 A.

Analog Peripheral Signals
256 I/O
Bus Interface Ports
2x RJ45 (2‑channel switch)
Bus Terminals
64 (255 with K‑bus extension)
Configuration Method
via KS2000 software
Data Cable Category
Cat3 (10 Mbit/s), Cat5 (100 Mbit/s)
Data Cable Type
4x2 twisted‑pair copper
Data Transfer Rates
10/100 Mbit/s auto‑sensing
Digital Peripheral Signals
512 I/O
Fieldbus Buffer Size
512 B in, 512 B out
Fuse Recommendation
≤ 10 A
Input Current
70 mA + (K‑bus current)/4, max 500 mA
K‑bus Supply Current
1750 mA
Power Supply
24 V DC (‑15%/+20%)
Protocol
PROFINET RT (Class B)
Starting Current
2.5× continuous current
Topology
line or star wiring

Frequently Asked Questions about BK9103-1005:

Q: What is the maximum number of bus terminals for this device?

A: The device can support up to 64 bus terminals, or 255 with a K-bus extension.

Q: What is the maximum number of bytes for input and output on the fieldbus?

A: The maximum number of bytes is 512 bytes for both input and output.

Q: How many digital peripheral signals can this device handle?

A: The device can handle 512 digital peripheral signals for inputs and outputs.

Q: What is the capacity for analog peripheral signals?

A: The device supports 256 analog peripheral signals for inputs and outputs.

Q: How can the device be configured?

A: Configuration can be done via KS2000.


Internal Product Review

  • ‘‘Beckhoff produces a bus coupler known as the BK9103-1005. It is compatible with 512 digital peripheral input/outputs and is a part of the BK EtherCAT Bus Coupler Series. It has a 24 V DC power source and supports the PROFINET RT protocol. The weight of the gadget is around 170g.’’

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