Yokogawa S9345FA Bus Interface Module – Obsolete CENTUM Series Spare Part

Technical Dossier

Product Details And Specifications

Yokogawa S9345FA Bus Interface Module – Obsolete CENTUM 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 not independently verified by DriveKNMS. Buyers should cross-reference against original Yokogawa engineering documentation for their specific system revision. No parameters are fabricated.

Solving the Discontinued Hardware Crisis

The Yokogawa CENTUM platform has been the backbone of process control in petrochemical, power generation, and pharmaceutical facilities across Asia, the Middle East, and Europe for over two decades. The S9345FA Bus Interface Module sits at a critical communication junction within this architecture — it manages the data exchange between field I/O stations and the central controller. There is no software patch, no firmware workaround, and no third-party substitute that replicates its function without a full hardware redesign of the I/O bus topology.

Yokogawa's official end-of-life policy for CENTUM CS and CS 3000 hardware means that OEM repair services, spare parts, and technical support for modules like the S9345FA are no longer available through standard channels. Facilities that have not pre-positioned spares face a binary choice when failure occurs: source from the secondary market under time pressure, or commit to a platform migration that was not budgeted, not planned, and not operationally convenient.

How to extend your CENTUM DCS asset life by 5–10 years at low cost:

Condition & Reliability Assurance

DriveKNMS applies a structured 5-step quality assurance process to all discontinued modules before dispatch review:

Key Features for System Maintenance

• Drop-in replacement: The S9345FA installs directly into the existing CENTUM backplane slot with no mechanical modification required.
• No reprogramming required: Controller configuration, I/O mapping, and function block assignments remain intact after module substitution. Replacement does not trigger a system re-engineering event.
• Avoids engineering reconstruction costs: Substituting a like-for-like module eliminates the $50,000–$200,000 engineering cost associated with migrating a single I/O subsystem to a current-generation platform.
• Minimizes MTTR: With a pre-positioned spare and documented swap procedure, mean time to repair for a bus interface failure can be reduced from days to under two hours.
• Preserves operator familiarity: No HMI changes, no new alarm structures, no retraining. The control system continues to behave identically from the operator's perspective.

Q: How do I confirm the unit is genuine and not a counterfeit?
A: All units supplied by DriveKNMS are sourced from decommissioned industrial facilities or authorized asset liquidation channels. We provide traceability documentation, original labeling photographs, and test records upon request. We do not source from unverified brokers.