Multi Status Input Solution – YOKOGAWA ST4*D AS S9191AQ-0 | CENTUM VP / CS 3000 Series
Where This Product Is Used
The YOKOGAWA ST4*D AS S9191AQ-0 Multi Status Input Card is deployed across a wide range of industrial automation environments where reliable discrete status monitoring is critical. Typical installation sites include:
- Oil & Gas Refineries — monitoring valve open/close status, pump run/stop signals, and emergency shutdown (ESD) feedback loops
- Chemical & Petrochemical Plants — capturing multi-point discrete inputs from field instruments and safety interlocks
- Power Generation Facilities — integrating breaker status, turbine trip signals, and auxiliary equipment feedback into the DCS
- Pulp & Paper Mills — tracking conveyor status, motor run signals, and process interlocks across large-scale distributed I/O architectures
- Water & Wastewater Treatment — reading pump status, level switch contacts, and flow switch signals in remote field stations
- Pharmaceutical Manufacturing — supporting GMP-compliant process monitoring with deterministic status input scanning
Wherever a CENTUM VP or CS 3000 system is installed and engineers need to bring discrete field contact signals into the DCS controller, the ST4*D AS S9191AQ-0 is the specified I/O card.
Technical Specifications
| Attribute | Value |
|---|---|
| Manufacturer | YOKOGAWA Electric Corporation |
| Part Number / SKU | ST4*D AS S9191AQ-0 |
| Module Type | Multi Status Input Card (Discrete Input) |
| Compatible Platform | CENTUM VP, CENTUM CS 3000 |
| I/O Type | Digital / Discrete Status Input |
| Input Signal | Dry contact / Wet contact (voltage-free or voltage-applied) |
| Isolation | Channel-to-channel and channel-to-bus isolation |
| Mounting | Node Unit (NU) / Field Control Station (FCS) I/O slot |
| Communication | Internal YOKOGAWA V-net / Vnet/IP backplane bus |
| Operating Temperature | 0°C to 55°C (standard industrial range) |
| Weight | Approx. 900 g |
| Compliance | CE, UL, IECEx (refer to YOKOGAWA datasheet for full certifications) |
Note: Always cross-reference with the official YOKOGAWA hardware manual and your system’s I/O assignment before installation.
Why Engineers Specify This Model
- Native CENTUM VP / CS 3000 Compatibility — Plug-and-play integration with YOKOGAWA’s DCS architecture; no additional signal conditioning required.
- High Channel Density — Maximizes I/O utilization per slot, reducing cabinet footprint and wiring costs in large-scale installations.
- Deterministic Scan Cycle — Ensures status inputs are read and processed within the DCS controller’s guaranteed scan period, critical for safety-related monitoring.
- Robust Isolation Architecture — Protects the controller backplane from field-side transients, ground loops, and surge events common in heavy industrial environments.
- Long Product Lifecycle — YOKOGAWA’s commitment to long-term parts availability makes this card a low-risk choice for plants with 20+ year operational horizons.
- Proven Field Reliability — Widely deployed in tier-1 process industries globally; extensive installed base means proven MTBF data and readily available maintenance expertise.
Complete System Bill of Materials
For a fully operational CENTUM VP / CS 3000 discrete input subsystem, engineers typically specify the following alongside the ST4*D AS S9191AQ-0:
- YOKOGAWA CENTUM VP / CS 3000 Field Control Station (FCS) — e.g., AFV10D, AFV30D
- Node Unit (NU) or I/O Unit chassis — matched to your FCS model
- Power Supply Module for I/O Unit — e.g., PW481 or equivalent
- Terminal Board / Marshalling Cabinet wiring accessories
- YOKOGAWA Engineering Tool (CENTUM VP Builder / CS 3000 Builder) for I/O tag assignment
- Field wiring: shielded twisted-pair cable (per YOKOGAWA wiring guidelines)
- Surge protection devices (SPDs) for field cable entries in hazardous areas
Contact support@konmask.com for a complete BOM quotation tailored to your project scope.
Compliance & Industry Standards
- CE Marking — Compliant with EU Machinery and EMC Directives
- UL Listed — Recognized for use in North American industrial installations
- IEC 61511 / IEC 61508 — YOKOGAWA CENTUM platform supports functional safety applications (SIL-rated configurations; verify with YOKOGAWA safety manual)
- IECEx / ATEX — Consult YOKOGAWA for zone-rated installation requirements when deploying in hazardous areas
- RoHS Compliant — Meets EU Restriction of Hazardous Substances requirements
- ISO 9001 — Manufactured under YOKOGAWA’s certified quality management system
Quality Assurance & Sourcing
At Konmask.com, every YOKOGAWA module we supply undergoes a structured verification process before dispatch:
- Authenticity Check — Visual inspection of YOKOGAWA OEM labeling, part number markings, and date codes against manufacturer references
- Functional Pre-test — Where applicable, modules are bench-tested for power-on response and communication bus acknowledgment
- Condition Grading — Each unit is clearly graded: New (factory-sealed), Refurbished (tested & recertified), or Surplus (tested, cosmetic wear acceptable)
- Traceability Documentation — Supply chain documentation available on request for regulated industries
- Secure Packaging — ESD-safe anti-static bags, foam-lined cartons, and moisture barrier packaging for international shipment
How to Source This Part
- Add to Cart — Click the purchase button above to place an order directly on Konmask.com
- Request a Quote — For bulk orders, project BOM procurement, or lead-time inquiries, email support@konmask.com
- Confirm Compatibility — Share your FCS model and I/O slot assignment with our team; we will verify fit before shipment
- Expedited Sourcing — If the item is not in stock, our global sourcing network can locate surplus or new stock within 3–10 business days
- International Shipping — We ship worldwide with DHL, FedEx, and UPS Express; export documentation (commercial invoice, packing list, COO) provided as standard
Phone / WhatsApp: +0086 19859288691
Application-Specific FAQ
Q: Is the ST4*D AS S9191AQ-0 compatible with both CENTUM VP and CS 3000?
A: Yes. This card is designed for YOKOGAWA’s CENTUM platform and is compatible with both CENTUM VP and CS 3000 Field Control Stations. Always verify the specific FCS model and firmware version with your YOKOGAWA system documentation.
Q: Can this card be used in a Safety Instrumented System (SIS)?
A: The CENTUM VP platform supports SIL-rated configurations in conjunction with YOKOGAWA ProSafe-RS. Consult YOKOGAWA’s functional safety manual and your SIS engineer before specifying this card in a safety loop.
Q: What is the lead time for this part?
A: In-stock units ship within 1–3 business days. For sourced or surplus units, typical lead time is 5–10 business days. Contact us for real-time availability.
Q: Do you provide a warranty?
A: Yes. All units supplied by Konmask.com carry a minimum 90-day functional warranty. Extended warranty options are available for new factory-sealed stock.
Q: Can you supply the matching terminal board or I/O unit chassis?
A: Yes. We stock a broad range of YOKOGAWA CENTUM accessories. Send your full BOM to support@konmask.com and we will provide a consolidated quotation.
Q: Is documentation (datasheet, hardware manual) available?
A: Official YOKOGAWA datasheets and hardware manuals are available upon request. Contact our team and we will provide the relevant technical documentation for your engineering review.
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Contact: support@konmask.com | +0086 19859288691
