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We provide 1 year warranty for all remaining parts.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online.
If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.
Amikon offers a wide range of components, products and services related to industrial automation. We have a large surplus of stocks and are also distributors of new products from a variety of quality manufacturers.
Technical specifications for BK3120
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Product ModelBK3120
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Product ParametersPROFIBUS Economy plus Bus Coupler
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Tariff Code8537101190
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Country of originGERMANY
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Place of shipmentXiamen, China
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Estimated Shipping Size4.7x6.8x8.8cm
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ManufacturerBECKHOFF
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Weight0.2 kg
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Number of Bus Terminals64 (255 with K-bus extension)
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Max. number of bytes fieldbus128 byte input and 128 byte output
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Data transfer ratesautomatic detection up to 12 Mbaud
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Bus interface1 x D-sub 9-pin socket with shielding
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Data transfer mediumshielded copper cable, 2 x 0.25 mm²
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Power supply24 V DC (-15%/+20%)
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Input current70 mA + (total K-bus current)/4, 500 mA max
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Current supply K-bus1750 mA
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Power contactsmax. 24 V DC/max. 10 A
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Electrical isolation500 V (power contact/supply voltage/fieldbus)
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Operating temperature-25…+60°C
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Storage temperature-40…+85°C
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Relative humidity95%, no condensation
Description
BK3120
PROFIBUS BUS COUPLER
FOR UP TO 64 BUS TERMINALS
(255 WITH K-BUS EXTENSION)
12 MBAUD
ECONOMY PLUS
PROFIBUS BUS COUPLER
FOR UP TO 64 BUS TERMINALS
(255 WITH K-BUS EXTENSION)
12 MBAUD
ECONOMY PLUS
Information
Overview
Manuals
Technical notes
Product Applications
Electrical Wiring
Features:
- Common for all PROFIBUS master
- PROFIBUS Economy plus Bus Coupler
- Automatic Baud Rate Detection
- Flexible Address Configuration
- Compact DIN-Rail Mounting
The BK3120 BECKHOFF PROFIBUS Economy plus Bus Coupler may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
BECKHOFF BK3120 PROFIBUS Economy plus Bus Coupler Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The Beckhoff BK3120 is a "Economy plus" PROFIBUS Bus Coupler designed for high-speed fieldbus communication in industrial automation, featuring PROFIBUS DP V1 services for direct register access and advanced diagnostics. It acts as the interface between the PROFIBUS network and Beckhoff Bus Terminals (K-bus), supporting up to 64 terminals directly, or up to 255 with K-bus extension.
- Body Shop & Paint Lines: Manages digital signals for robotic arm movements and proximity sensors
- Bottle Filling & Packaging: Used in high-speed conveyors to monitor photo-eyes and control solenoid valves
- Wafer Processing: Supports precision automation tasks from wafer production to chip packaging
- CNC Centers: Found in vertical machining centers (e.g., Homag machines) for real-time control of axis limits and tool changers
- Hygienic Control: Often housed in stainless steel control cabinets to manage I/O for cleanroom-standard machinery
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Power Supply: Connect a 24 V DC (-15%/+20%) supply to the designated terminals. This powers both the coupler's internal electronics and the K-bus.
Power Contacts: Use the separate feed-in points to provide power for the field devices (sensors/actuators). These contacts can handle up to 10 A.
PROFIBUS Connection: Use a standard D-sub 9-pin socket with shielded copper cable. Ensure the cable is properly grounded to the shell for noise immunity.
FAQs
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What is the communication interface?
+It uses a 1 x D-sub 9-pin socket for PROFIBUS communication. -
How much power is available for the K-bus?
+It provides a maximum K-bus current of 1750 mA -
What is the BK3120?
+It is a PROFIBUS DP V1 Bus Coupler designed for connecting Beckhoff Bus Terminals to a PROFIBUS network. -
What is the power requirement?
+24 V DC (maximum 10 A for power contacts).
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Disclaimer: Amikon Limited sells new and surplus products and develops channels for purchasing such products. Amikon Limited is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because Amikon Limited is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. Amikon Limited is not an authorized distributor, dealer, or representative of the products displayed on this website. All product names, trademarks, brands, and logos used on this website are the property of their respective owners. The description, explanation, or sale of products with these names, trademarks, brands, and logos is for identification purposes only and is not intended to indicate any association with or authorization from any rights holder.
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