ABB RLON-01 Adapter Module – Obsolete S800 I/O Spare Part

Technical Dossier

Product Details And Specifications

ABB RLON-01 Adapter Module – Obsolete S800 I/O Spare Part: Protecting Your Automation Assets When Replacement Is Not an Option

DriveKNMS maintains a dedicated procurement channel for discontinued ABB S800 I/O components. The RLON-01 is a LONWORKS communication adapter designed to integrate S800 I/O stations into LONWORKS-based control networks, commonly deployed alongside ABB Advant OCS, MOD 300, and early AC450/AC460 DCS environments. As ABB has long discontinued this product line, RFQ-reviewed sourcing status is finite and diminishing globally.

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 are intentionally omitted. Specifications above are based on publicly available ABB documentation. Always cross-reference with your system's engineering drawings before installation.

Solving the Discontinued Hardware Crisis

The S800 I/O platform was engineered for reliability in demanding process environments — pulp and paper, oil and gas, chemical processing, and power generation. Many of these installations have been running continuously for 15 to 25 years, and the control logic embedded in them represents decades of process tuning that cannot be trivially migrated.

The RLON-01 sits at a critical junction in these architectures: it is the physical and protocol bridge between the I/O station and the LONWORKS network backbone. Without it, the I/O station loses communication with the controller, and the affected process loop goes blind. In a redundant architecture, a single failed RLON-01 may trigger a failover; in a non-redundant setup, it means an unplanned shutdown.

Condition & Reliability Assurance

For obsolete hardware, condition verification is not optional — it is the entire value proposition. Our 5-step QA process for the RLON-01 and comparable legacy modules:

• Step 1 – Visual and Mechanical Inspection: Board-level examination for physical damage, burn marks, corrosion on connector pins, and housing integrity. Units with compromised connectors are rejected at this stage.
• Step 2 – Electrolytic Capacitor Assessment: Aged electrolytic capacitors are the primary failure mode in legacy electronics. We identify and flag units with visibly bulged, leaking, or out-of-spec capacitors. Refurbished units undergo capacitor replacement where applicable.
• Step 3 – Firmware Version Verification: Where accessible, firmware revision is documented and cross-referenced against known compatibility matrices for the target DCS version. Mismatched firmware is a common cause of post-installation failures in legacy systems.
• Step 4 – Functional Power-On Test: Units are powered and tested for basic communication response where test bench infrastructure supports the LONWORKS protocol stack.
• Step 5 – Anti-Static Packaging and Documentation: All units are shipped in ESD-safe packaging with a condition report, sourcing declaration, and export compliance documentation.

Key Features for System Maintenance

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

Q: Is the unit new or refurbished?
A: Condition is stated explicitly at the time of RFQ response — either new surplus (unused, original packaging where available) or professionally refurbished (tested, cleaned, reconditioned). We do not mix conditions within a single order without disclosure.

Q: Can you support multi-unit or repeat RFQ requests?
A: Yes. Send the model list, target quantity and destination so DRIVEKNMS can review sourcing options and quote the requirement as a project RFQ.