DCS Back Plane Solution — Yokogawa ASS9881 DE-02 | CENTUM Series
The Yokogawa ASS9881 DE-02 is a field-proven back plane module engineered for Yokogawa’s CENTUM VP and CS 3000 Distributed Control Systems. Designed to provide reliable inter-module communication and power distribution within the field control station (FCS) cabinet, this back plane is a critical structural and electrical backbone for continuous-process automation environments.
Where This Product Is Used
The ASS9881 DE-02 back plane is deployed across a wide range of heavy-industry and process-critical applications, including:
- Oil & Gas Refineries — Integrated into FCS cabinets managing crude distillation, hydrotreating, and gas compression units where uninterrupted signal integrity is mandatory.
- Chemical & Petrochemical Plants — Used in reactor control loops and batch processing systems requiring deterministic I/O bus performance.
- Power Generation Facilities — Installed in boiler management and turbine control systems where thermal cycling demands robust PCB and connector construction.
- Pulp & Paper Mills — Supports multi-loop control of digester, bleaching, and recovery boiler processes within CENTUM VP architectures.
- Pharmaceutical Manufacturing — Deployed in GMP-compliant process control cabinets where validated hardware configurations must be maintained.
- Water & Wastewater Treatment — Used in SCADA-integrated DCS panels controlling pump stations, filtration, and dosing systems.
- LNG & Offshore Platforms — Specified for hazardous-area control rooms requiring certified, OEM-sourced replacement components.
Technical Specifications
- Part Number: ASS9881 DE-02
- Manufacturer: Yokogawa Electric Corporation
- Compatible Systems: CENTUM VP, CENTUM CS 3000
- Module Type: Back Plane / Backplane Bus Board
- Function: Inter-module communication bus, power rail distribution, and I/O module mounting interface
- Weight: Approx. 900 g
- Mounting: DIN-rail / cabinet rack mount (FCS enclosure)
- Operating Temperature: 0°C to 55°C (per CENTUM system specification)
- Storage Temperature: −25°C to 70°C
- Humidity: 5% to 95% RH, non-condensing
- Compliance: CE, RoHS (per Yokogawa product family declaration)
Note: Full electrical specifications are available in the Yokogawa CENTUM VP Hardware Engineering Guide. Contact us for the relevant technical datasheet.
Why Engineers Specify This Model
- OEM Dimensional Compatibility: The DE-02 revision maintains exact form-factor and connector pinout compatibility with the CENTUM FCS cabinet slot layout — no mechanical modification required during replacement.
- Bus Integrity: Precision-etched signal traces and gold-plated edge connectors minimize contact resistance and signal degradation across the I/O module bus.
- Proven MTBF: Yokogawa’s CENTUM hardware platform is rated for continuous operation in process industries, with back plane modules designed for multi-year service intervals.
- Simplified Maintenance: Hot-swap-compatible slot architecture (system-dependent) allows module replacement without full FCS shutdown in supported configurations.
- Genuine OEM Traceability: Sourced through verified supply channels with full part number and revision traceability — critical for regulated industries requiring documented hardware provenance.
Complete System Bill of Materials
The ASS9881 DE-02 back plane is typically specified alongside the following CENTUM VP / CS 3000 components:
- Yokogawa AFV10D / AFV30D — Field Control Unit (FCU)
- Yokogawa AAI141 / AAI143 — Analog Input Modules
- Yokogawa AAO141 — Analog Output Module
- Yokogawa ADV151 / ADV161 — Digital Input/Output Modules
- Yokogawa AIP588 — Power Supply Module
- Yokogawa ANT100 / ANT200 — Node Interface Units
- Yokogawa AKB10 / AKB20 — Communication Bus Cables
- Yokogawa ASS9880 — Companion Back Plane (adjacent slot expansion)
Contact [email protected] for complete BOM sourcing assistance and cross-reference verification.
Compliance & Industry Standards
- CE Marking — Compliant with EU Machinery and EMC Directives as part of the CENTUM VP system.
- RoHS — Restriction of Hazardous Substances compliant per Yokogawa product family declaration.
- IEC 61511 — CENTUM VP system (including back plane hardware) supports functional safety applications up to SIL 2 in certified configurations.
- ISA-5.1 / ISA-18.2 — Compatible with instrumentation and alarm management system architectures conforming to ISA standards.
- ATEX / IECEx — For hazardous-area installations, confirm zone classification and use with Yokogawa-certified intrinsic safety barriers or isolators.
Quality Assurance & Sourcing
At Konmask.com, every Yokogawa module we supply undergoes a structured sourcing and verification process:
- Origin Verification: Parts are sourced from authorized distributors, OEM surplus channels, or decommissioned plant inventories with documented provenance.
- Visual & Functional Inspection: Each unit is inspected for PCB integrity, connector condition, and revision label accuracy prior to dispatch.
- Revision Matching: We confirm DE-02 revision compatibility with your existing FCS cabinet configuration before shipment.
- Packaging: Anti-static ESD packaging with humidity indicator cards for international freight.
- Warranty: 90-day operational warranty against manufacturing defects. Extended warranty available on request.
How to Source This Part
- Confirm your CENTUM system revision — Identify whether your FCS is CENTUM VP R4/R5/R6 or CS 3000 R3, as back plane compatibility varies by generation.
- Verify slot position and adjacent modules — Provide your cabinet layout or I/O module list so we can confirm the correct back plane variant.
- Request a quote — Email [email protected] or call +0086 19859288691 with your part number, required quantity, and delivery timeline.
- Receive shipping estimate — We provide EXW and DDP pricing for domestic (CN) and international destinations with full export documentation.
- Place order & track — Orders are processed within 1–2 business days. Tracking and commercial invoice provided upon dispatch.
Application-Specific FAQ
Q: Is the ASS9881 DE-02 compatible with both CENTUM VP and CS 3000?
A: The ASS9881 series back planes are primarily associated with CENTUM CS 3000 and early CENTUM VP hardware generations. Compatibility depends on your specific FCS cabinet model and software revision. We recommend providing your FCS model number for confirmation before ordering.
Q: Can this back plane be replaced without shutting down the entire FCS?
A: Back plane replacement typically requires the affected FCS node to be taken offline. In redundant FCS configurations, the redundant node can maintain control while the primary is serviced. Always follow Yokogawa’s maintenance procedures and your site’s MOC (Management of Change) process.
Q: Do you supply the full CENTUM VP I/O module set alongside this back plane?
A: Yes. Konmask maintains inventory of a broad range of CENTUM VP and CS 3000 I/O modules, power supplies, and communication units. Contact us with your complete BOM for consolidated sourcing.
Q: What is the lead time for the ASS9881 DE-02?
A: Lead time varies by current stock availability. In-stock units ship within 3–5 business days. For out-of-stock items, sourcing typically takes 2–4 weeks. Contact us for real-time availability.
Q: Can you provide a certificate of conformance or test report?
A: We provide a Konmask inspection report with every shipment. OEM certificates of conformance are available for units sourced directly from authorized Yokogawa channels. Please specify your documentation requirements at the time of inquiry.
Q: Do you ship internationally?
A: Yes. We ship globally with full export documentation including commercial invoice, packing list, and HS code declaration. DDP (Delivered Duty Paid) options are available for select destinations.
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Contact: [email protected] | +0086 19859288691
