ABB TK850V007 3BSC950192R1 | CEX-Bus Extension Cable

Description

• Model: TK850V007
• ABB Article Number: 3BSC950192R1
• Part Type: CEX-Bus Extension Cable
• Length: 0.7 m
• System Compatibility: ABB AC 800M / System 800xA controller architecture
• Bus: CEX-Bus
• Termination Requirement: TK851 is required when using the TK850V007 extension cable.

Technical Introduction

A CEX-Bus cable looks simple, but its length, connector arrangement, and termination scheme directly affect the controller communication path.

The ABB TK850V007 3BSC950192R1 is a 0.7 m CEX-Bus Extension Cable used with ABB AC 800M communication-interface arrangements. ABB’s current System 800xA documentation identifies TK850V007 as a bus accessory and specifies that its use requires a TK851 CEX-Bus terminator. The cable is intended for connecting communication interface units mounted on separated DIN rails or other configurations where the standard interconnection cannot be used directly.

Best Suited For

• AC 800M controller communication-interface installations
• Replacement of an identified TK850V007 cable
• Maintenance stock for System 800xA legacy and active installations

Core Technical Specifications

ABB TK850V007 3BSC950192R1

ABB’s published product information confirms the 0.7 m length and TK851 termination requirement. An ABB product-data listing also reports dimensions of approximately 700 × 13 × 6 mm and a net weight of 0.2 kg.

Field Engineer’s Tech Notes

1. The TK851 terminator is part of the installation requirement.
ABB explicitly states that using requires TK851 as the CEX-Bus terminator. A replacement cable should therefore be checked together with the existing termination arrangement rather than installed as an isolated component.

2. Do not substitute by cable length alone.
The TK850 family includes different cable arrangements and lengths. Verify the exact designation and ABB article number 3BSC950192R1 before replacement. Incorrect CEX-Bus cabling can produce communication faults that are easily mistaken for a defective CI module or controller. ABB documents specifically as a CEX-Bus extension cable for this architecture.

Adaptive QA & Testing Protocol

For a CEX-Bus extension cable, incoming QA starts with verification of the marking, connector condition, cable jacket integrity, strain relief, and evidence of bent, contaminated, or damaged contacts.

The cable should be checked for conductor continuity and unintended shorts between relevant contacts before installation. Connector engagement and mechanical locking should then be verified on the actual AC 800M installation.

For a live system check, the communication interface should be monitored after installation to confirm that the associated CEX-Bus nodes initialize and communicate normally. Where the architecture requires it, verify the termination and cable routing before replacing active controller hardware.

Inspection records, continuity-test results, photographs, and available test videos can be provided upon request.

Buyer’s FAQ

What is ABB 3BSC950192R1?

It is an ABB CEX-Bus Extension Cable with a specified length of 0.7 m, used as a communication bus accessory in AC 800M/System 800xA controller installations.

Does require a separate terminator?

Yes. ABB states that use of requires a CEX-Bus terminator.

Is a direct replacement for other TK850 cables?

Do not assume interchangeability. Verify the complete ABB designation, article number, cable length, connector arrangement, and cabinet architecture before substitution.

Can this spare be supplied new or tested?

Depending on inventory, the cable may be available as New Surplus (NSFP) or other verified stock condition. Request confirmation of physical condition, inspection status, warranty, and shipping lead time with the quotation.