YOKOGAWA CP461-50 S1 Processor Module – CENTUM CS 3000 Field Control Station
When a DCS processor module fails mid-process, the consequences are immediate and severe: field control stations lose their execution environment, PID loops freeze, safety interlocks go blind, and entire production units face unplanned shutdown. In continuous-process industries — refining, petrochemicals, power generation, pulp and paper — every minute of unplanned downtime translates directly into lost yield, regulatory exposure, and costly restart sequences. The CP461-50 S1 is the component that prevents this scenario. It is the central processing unit of the CENTUM CS 3000 Field Control Station (FCS), responsible for executing all control logic, managing I/O communication, and maintaining real-time determinism across the entire distributed control loop.
Within the CENTUM CS 3000 product family — Yokogawa’s flagship DCS platform deployed across thousands of plants worldwide — the CP461-50 S1 occupies the role of the standard-performance FCS processor. It balances computational throughput with broad I/O compatibility, making it the most widely specified processor variant in brownfield expansions and like-for-like replacements. CENTUM CS 3000 remains one of the most installed DCS platforms globally, with an installed base spanning refineries in the Middle East, chemical complexes in Europe, and LNG terminals across Asia-Pacific. Sourcing a verified, compatible CP461-50 S1 is therefore a critical procurement task — not a commodity purchase.
Technical Specifications
| Manufacturer | YOKOGAWA Electric Corporation |
| Part Number | CP461-50 S1 |
| Module Type | Field Control Station (FCS) Processor Module |
| Compatible Platform | CENTUM CS 3000 DCS |
| Function | Central processing unit for FCS; executes control functions, manages I/O bus communication |
| Weight | 700 g (approx.) |
| Suffix Code | S1 — Standard specification |
| Form Factor | Card-type module, rack-mounted |
| Communication | V-net (Yokogawa proprietary control network) |
| Redundancy Support | Dual-redundant configuration supported (paired with second CP461-50 S1) |
Note: All specifications are based on published Yokogawa documentation. Konmask.com does not modify or fabricate hardware specifications. Confirm exact revision requirements with your site’s engineering records before ordering.
Key Features & Benefits
- Real-Time Control Execution: Manages all function block execution within the FCS, maintaining deterministic scan cycles critical for process stability.
- V-net Integration: Native support for Yokogawa’s V-net control bus ensures seamless communication with HIS (Human Interface Stations) and other FCS nodes without protocol conversion.
- Redundancy-Ready Architecture: Supports 1:1 redundant processor pairing, enabling bumpless switchover in the event of a primary processor fault — essential for high-availability processes.
- Broad I/O Compatibility: Works with the full range of CENTUM CS 3000 I/O modules (analog, digital, pulse, HART), preserving existing field wiring investments during upgrades.
- Proven Long-Term Reliability: Designed to Yokogawa’s industrial-grade standards for continuous 24/7 operation in demanding process environments.
- Drop-In Replacement: Maintains hardware and firmware compatibility with existing CS 3000 FCS cabinets, minimizing engineering effort for like-for-like replacements.
Industry & Equipment Applications
- Oil & Gas: Upstream wellhead control, midstream pipeline monitoring, downstream refinery unit operations (CDU, FCC, HDS).
- Petrochemicals & Chemicals: Reactor temperature/pressure control, batch sequencing, distillation column management.
- Power Generation: Boiler combustion control, turbine governor interfaces, balance-of-plant automation.
- Pulp & Paper: Digester control, bleaching sequence management, recovery boiler operations.
- LNG & Gas Processing: Cryogenic process control, compressor management, custody transfer metering systems.
- Pharmaceuticals: Validated batch control environments requiring audit-trail-capable DCS platforms.
System Integration & Compatible Parts
The CP461-50 S1 operates within the CENTUM CS 3000 FCS cabinet ecosystem. Typical associated components include:
- Power Supply Units: PW481, PW482 series — provide regulated DC power to the processor and I/O bus.
- I/O Modules: AAI141, AAI543, ADV151, ADV551, AAT141 series — analog and digital I/O cards interfacing with field instruments.
- Node Interface Units (NIU): Manage I/O bus segmentation within the FCS cabinet.
- V-net Couplers: Connect the FCS to the plant-wide V-net control network.
- Redundant Processor Pair: A second CP461-50 S1 unit for 1:1 redundancy configuration.
Contact Konmask.com if you need to source a complete FCS cabinet BOM — we can cross-reference your existing configuration and identify all required modules.
Our Quality Assurance Process
- Visual Inspection: Every unit is inspected for physical damage, connector integrity, and label authenticity upon receipt.
- Traceability Verification: Serial numbers and suffix codes are verified against Yokogawa’s published part numbering conventions.
- Functional Testing: Where test equipment is available, modules undergo power-on verification prior to dispatch.
- Secure Packaging: ESD-safe packaging with moisture barrier bags and rigid outer cartons to protect sensitive electronics during international transit.
- Documentation: Test records and inspection reports available upon request for regulated industries.
How to Order
- Submit your inquiry via the Contact / Request a Quote form on this page.
- Provide your full part number (CP461-50 S1), required quantity, and delivery timeline.
- Our team will confirm availability, lead time, and pricing within 1 business day.
- Upon agreement, we issue a proforma invoice and arrange secure payment and shipment.
- Tracking information and shipping documents (commercial invoice, packing list, COO if required) are provided at dispatch.
For urgent plant shutdowns or emergency procurement, please indicate URGENT in your inquiry subject line. We prioritize emergency requests.
Why Choose Konmask.com?
- Industrial Automation Specialists: We focus exclusively on DCS, PLC, and industrial automation components — not a generalist distributor.
- Global Sourcing Network: Access to verified stock across multiple supply channels, including OEM-authorized and reputable secondary market sources.
- B2B Procurement Support: We understand plant maintenance procurement workflows — PO-based purchasing, documentation requirements, and lead-time pressures.
- Technical Pre-Sales Assistance: Our team can help verify compatibility with your existing FCS configuration before you commit to a purchase.
- Worldwide Shipping: Export documentation, customs compliance, and reliable international logistics to over 80 countries.
Frequently Asked Questions
Q: Is the CP461-50 S1 compatible with CENTUM VP?
A: The CP461-50 S1 is designed for CENTUM CS 3000. While Yokogawa has migration paths from CS 3000 to CENTUM VP, the hardware is not directly interchangeable. Consult your Yokogawa system integrator for migration planning.
Q: Can this module be used in a non-redundant FCS configuration?
A: Yes. The CP461-50 S1 can operate as a single (non-redundant) processor. Redundancy requires a matched second unit and appropriate cabinet wiring.
Q: What is the difference between CP461-50 S1 and other CP461 variants?
A: The suffix code (S1, S2, etc.) denotes specification variants — typically related to firmware version, regional certification, or minor hardware revision. Always confirm the exact suffix required for your installation.
Q: Do you provide a warranty?
A: Yes. Konmask.com provides a limited warranty on all supplied modules. Warranty terms are confirmed at the time of quotation based on the sourcing channel and module condition.
Q: How long does international shipping take?
A: Typical transit times are 3–7 business days for express air freight to most destinations. Economy options are available for non-urgent requirements.
Q: Can you supply the full FCS cabinet BOM?
A: Yes. Provide your cabinet configuration or existing module list and we will identify and quote all required components as a package.
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