ABB NTDI01 Digital I/O Termination Unit

ABB TK851 3BSC950192R1 Industrial CEX-Bus Interface

ABB TK851 3BSC950192R1 Industrial CEX-Bus Interface

Availability: 10 left in stock

Product Overview The ABB TK851 (Product ID: 3BSC950192R1) functions as a specialized CEX-bus (Communication Extension Bus) termination cable within the...

SKU: TK851 3BSC950192R1

Manufacturer: ABB
Product No.: TK851 3BSC950192R1
Product Type: Prefabricated Industrial Cabling
Product Origin: Switzerland
Payment:T/T, Western Union
Weight: 200g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The ABB TK851 (Product ID: 3BSC950192R1) functions as a specialized CEX-bus (Communication Extension Bus) termination cable within the AC800M controller architecture. This 0.7-meter prefabricated cable provides the necessary electrical impedance matching for the system's extension bus. Specifically, any configuration utilizing the TK850V007 connection requires the TK851 to act as the terminal reference point. This ensures signal reflection suppression and maintains high-speed data integrity between the primary controller and its expanded communication modules. We provide this unit as 100% Brand New and original, ensuring your control network operates without data loss or bus errors.

Technical Specifications

Attribute	Specification Details
Model Number	TK851
Product ID	3BSC950192R1
Product Type	Prefabricated Connection Cable
Cable Length	0.7 m (Length 0,7 m)
Function	CEX-bus Terminator
Net Depth / Length	700 mm
Net Width	13 mm
Net Height	6 mm
Net Weight	0.2 kg
HS Code	854442 (Fitted with Connectors)
Compatibility	Used with TK850V007 and AC800M Controllers

Engineering Advantages

The TK851 3BSC950192R1 solves critical communication stability issues inherent in high-speed industrial bus extensions through a precise termination design.

Signal Reflection Suppression: The TK851 provides the specific resistive load required to terminate the CEX-bus. This prevents signal echoes that cause data corruption, which is vital when extending the bus via the TK850V007 link.
Optimized Dimensional Profile: With a height of only 6 mm and a width of 13 mm, this cable fits into the narrow routing channels of standard industrial control racks. This low-profile design prevents mechanical interference with adjacent I/O modules.
Factory-Terminated Reliability: As a prefabricated cable, the TK851 eliminates the need for manual on-site soldering or crimping. Factory-molded connectors ensure a gas-tight seal and a low-resistance path, protecting the link from oxidation in humid or corrosive environments.
Essential System Symmetry: Using the TK851 ensures that the AC800M controller correctly identifies the end of the physical bus segment. This allows the system firmware to stabilize timing parameters for all modules connected to the CEX-bus.

FAQs

Why does my system require the TK851 when using a TK850V007 cable?

The TK850V007 extends the CEX-bus to another rack or module. Without the TK851 acting as a terminator at the end of this extension, the bus remains "open," leading to signal degradation and potential controller "Bus Off" faults.
Can I use a standard 0.7m Ethernet cable instead of the TK851?

No. The TK851 3BSC950192R1 contains specific internal termination logic and connector pinouts designed exclusively for the Woodward/ABB CEX-bus electrical standard. Using non-specified cabling will likely damage the communication ports.
Is this a Brand New original ABB part?

Yes. We supply the TK851 3BSC950192R1 in its original factory state. Reliability is a mechanical necessity for bus terminators; therefore, we provide only 100% Brand New units to ensure long-term system uptime.
What mounting precautions should I take?

Ensure the connectors seat fully into the bus port. Because of the 0.7m length, avoid tight bends (less than a 50mm radius) to prevent internal stress on the high-speed data pairs and the termination circuitry.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.