Allen-Bradley 1715-TASIB16D Termination Assembly – Obsolete 1715 Redundant I/O Spare Part

Technical Dossier

Product Details And Specifications

Allen-Bradley 1715-TASIB16D Termination Assembly – Obsolete 1715 Redundant I/O Spare Part

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Note: Electrical parameters not independently verified for this listing. Buyers should cross-reference with original Rockwell Automation documentation (Publication 1715-UM001) prior to installation.

Solving the Discontinued Hardware Crisis

The 1715 Redundant I/O platform was engineered for environments where control system failure is not an option — nuclear auxiliary systems, refinery distillation columns, and continuous chemical reactors. The 1715-TASIB16D termination assembly serves as the physical and electrical interface between field wiring and the redundant I/O module stack. Its dual-channel termination architecture supports the system's fault-tolerant design, meaning a like-for-like replacement is the only option that preserves the redundancy certification of the installed system.

Substituting this assembly with a non-original component, or attempting to adapt a different termination base, invalidates the redundancy architecture and may void safety certifications (IEC 61511 / SIL compliance). For facilities operating under regulatory oversight — refineries, chemical plants, power utilities — this is not a theoretical risk. It is a compliance and liability issue.

Rockwell Automation's official position on EOL products is to migrate to newer platforms such as the 1715 successor architectures or ControlLogix-based safety systems. However, for facilities with 10–20 year operational horizons on existing infrastructure, a platform migration represents a capital project, not a maintenance action. Sourcing verified surplus 1715-TASIB16D units extends the operational life of the installed system by 5 to 10 years at a fraction of the migration cost.

Condition & Reliability Assurance

DriveKNMS applies a structured 5-step QA protocol to all discontinued termination assemblies before dispatch:

Step 1 – Visual and Mechanical Inspection: Full examination of the terminal block housing, wiring connectors, and mounting hardware. Any unit with cracked housings, deformed terminals, or missing hardware is rejected.

Step 2 – Electrolytic Capacitor Assessment: Where applicable, internal capacitors are assessed for signs of aging, bulging, or electrolyte leakage — a primary failure mode in assemblies stored beyond 10 years.

Step 3 – Pin and Connector Corrosion Check: All backplane connectors and field wiring terminals are inspected under magnification for oxidation, corrosion, or mechanical deformation. Affected contacts are treated or the unit is rejected.

Step 4 – Firmware and Label Verification: Catalog number, revision markings, and date codes are verified against known authentic Rockwell Automation production records to confirm genuine origin.

Step 5 – Functional Continuity Test: Electrical continuity across all terminal paths is verified prior to packaging.

Key Features for System Maintenance

The 1715-TASIB16D is a drop-in replacement for any installed unit of the same catalog number within a 1715 Redundant I/O system. No firmware changes, no re-engineering of the I/O configuration, and no PLC program modifications are required. Field wiring reconnects to the same terminal positions. The replacement procedure is a maintenance action, not an engineering project.

Recommended practice: facilities with more than three 1715 Redundant I/O racks in service should maintain a minimum of two 1715-TASIB16D assemblies in their critical spares inventory.

Q: How do I confirm the unit is genuine and not a counterfeit?
A: All units sourced by DriveKNMS are inspected for authentic Rockwell Automation markings, catalog number labels, and date codes. We do not source from unverified secondary markets. A certificate of inspection is provided with each shipment.

Q: Can this part be repaired if it fails?
A: Termination assemblies are passive wiring interface components. Repair is generally not applicable. Replacement with a verified surplus unit is the standard maintenance approach.

Q: How long can I realistically extend my 1715 system's operational life?
A: With a proactive critical spares strategy covering termination assemblies, I/O modules, and adapter modules, facilities have successfully maintained 1715 Redundant I/O systems 8–12 years beyond Rockwell Automation's EOL announcement. DriveKNMS can assist with a full spare parts audit for your installed 1715 system.