Allen-Bradley 1715-TASOF8 Redundant I/O Module – Obsolete 1715 Series Spare Part

Technical Dossier

Product Details And Specifications

Allen-Bradley 1715-TASOF8 Redundant I/O Module – Obsolete 1715 Series 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 such as output signal range and power consumption are not listed here to avoid inaccuracy. Please contact us for verified datasheet documentation.

Solving the Discontinued Hardware Crisis

The Allen-Bradley 1715 Redundant I/O platform was designed for installations where control system failure is not an option. It operates as a hot-standby redundant architecture, meaning both primary and secondary I/O modules must be present and functional for the system to maintain its safety and availability guarantees. The 1715-TASOF8, as the analog output module in this architecture, is not a peripheral — it is a structural component of the redundancy logic itself.

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

For plant managers operating facilities built on the 1715 platform, the practical strategy is not immediate migration — it is controlled asset life extension. Securing verified spare modules like the 1715-TASOF8 allows operations teams to maintain system integrity on their own schedule, not on a timeline dictated by a component failure.

How to extend your 1715-based automation asset life by 5 to 10 years:

Condition & Reliability Assurance

DriveKNMS applies a structured 5-step quality process to all refurbished 1715-TASOF8 units before dispatch:

1. Visual and mechanical inspection: Enclosure integrity, connector pin condition, and PCB surface examination for corrosion, burn marks, or physical damage.
2. Electrolytic capacitor assessment: Capacitors are the primary failure point in aging industrial modules. Each unit is evaluated for capacitor bulge, leakage, and ESR deviation from specification.
3. Pin and connector corrosion check: Backplane connector pins are inspected under magnification and cleaned where necessary. Oxidized contacts are the leading cause of intermittent faults in legacy I/O modules.
4. Firmware version verification: Where accessible, firmware revision is confirmed and documented. Customers are advised of the firmware version prior to shipment.
5. Functional power-on test: Each unit undergoes a controlled power-on sequence to verify basic operational status before packaging.

New (sealed) units are shipped in original or equivalent ESD-protective packaging with lot traceability documentation where available.

Key Features for System Maintenance

• Drop-in replacement: The 1715-TASOF8 installs directly into the existing 1715 backplane without hardware modification.
• No reprogramming required: The 1715 adapter automatically recognizes the module upon insertion. Controller logic does not require modification.
• Avoids engineering reconstruction costs: Replacing a failed module with a verified spare eliminates the need for I/O remapping, HMI reconfiguration, or system revalidation.
• Maintains redundancy architecture integrity: Restoring the failed module keeps the hot-standby system fully operational, preserving the safety and availability design intent of the original installation.

Should I buy more than one unit?
For any installation where the 1715-TASOF8 is a critical component, holding a minimum of one additional spare is a sound risk management decision. Given the discontinued status of the 1715 series, secondary market availability will decrease over time. Procurement now, at current pricing, is materially less expensive than emergency sourcing during a production stoppage.