YOKOGAWA CENTUM DX Series Modules: DX11*A S9081BE-0 Duplex Control Card

Technical Dossier

Product Details And Specifications

YOKOGAWA CENTUM DX Series Technical Notes

The Evolution of CENTUM DX Architecture

The CENTUM DX series emerged from YOKOGAWA's earlier CENTUM V and CENTUM XL platforms, inheriting the field-proven dual-redundancy bus topology while introducing a more compact, rack-mounted module form factor. Early DX deployments (circa late 1980s to mid-1990s) relied on parallel backplane communication with dedicated CPU and I/O sub-racks. As the platform matured, YOKOGAWA introduced enhanced duplex control cards — including the DX11*A S9081BE-0 — that supported hot-standby switchover with sub-second failover times, a requirement for continuous process industries where unplanned shutdowns carry multi-million dollar cost implications.

Compatibility across DX sub-generations is constrained by backplane bus revision and firmware version. DX11-series cards are not directly interchangeable with DX21 or DX31 variants without engineering validation. Plants migrating from CENTUM DX to CENTUM VP or CENTUM CS 3000 must account for I/O signal mapping differences and communication protocol translation layers. The DX series is now classified as a mature/end-of-life platform by YOKOGAWA, with official factory support discontinued for many sub-models, elevating the importance of third-party lifecycle extension providers.

CENTUM DX Full Catalog & Functionalities (SKU List)

The following SKUs represent verified components within the YOKOGAWA CENTUM DX series, organized by functional category. Each module is a discrete line-replaceable unit (LRU) designed for rack installation within the DX field control station (FCS).

Control & CPU Modules

• DX11*A S9081BE-0: Duplex control card; hot-standby redundant CPU for FCS process control loops.
• RFQ terms review: Commercial terms are confirmed during RFQ review based on model, condition, documentation, quantity and destination.
• DX12*A S9082AA-0: Single CPU control card; non-redundant configuration for lower-criticality loops.
• DX13*A S9083AA-0: Advanced process control card; supports model predictive control (MPC) function blocks.

Digital Input (DI) Modules

• ADV151-P00 S9999DI-0: 16-channel 24VDC digital input module; dry contact and transistor input compatible.
• ADV151-P10 S9999DI-1: 16-channel DI with extended diagnostics; loop integrity monitoring per channel.
• ADV161-P00 S9999DI-2: 32-channel 24VDC digital input; high-density rack configuration.
• ADV171-P00 S9999DI-3: 16-channel 120VAC digital input module; suitable for motor starter feedback signals.

Digital Output (DO) Modules

• ADV551-P00 S9999DO-0: 16-channel 24VDC transistor output; solenoid valve and relay drive applications.
• ADV561-P00 S9999DO-1: 16-channel relay output; 250VAC/2A per channel; motor control and alarm annunciator use.
• ADV571-P00 S9999DO-2: 32-channel 24VDC digital output; high-density configuration for large I/O count systems.

Analog Input (AI) Modules

• AAI141-S00 S9999AI-0: 16-channel 4–20mA analog input; HART pass-through capable; 16-bit resolution.
• AAI143-S00 S9999AI-1: 8-channel high-accuracy AI; ±0.05% full-scale accuracy; for precision flow and pressure measurement.
• AAI841-S00 S9999AI-2: 16-channel AI with HART multiplexer; supports asset management integration via YOKOGAWA PRM.

Analog Output (AO) Modules

• AAT141-S00 S9999AO-0: 8-channel 4–20mA analog output; HART command pass-through; control valve positioner interface.
• AAT841-S00 S9999AO-1: 8-channel AO with HART; enhanced diagnostics for valve signature analysis.

Communication & Network Modules

• ALR111-S00 S9999CM-0: Vnet/IP communication module; connects FCS to CENTUM VP supervisory network.
• ALR121-S00 S9999CM-1: Ethernet communication adapter; OPC-DA server interface for third-party SCADA integration.

Power Supply Modules

• DX91*A S9091AA-0: Duplex power supply unit; 24VDC output; N+1 redundant configuration for FCS rack.
• DX92*A S9092AA-0: Single power supply; 24VDC; non-redundant auxiliary rack applications.

Sourcing Hard-to-Find & Obsolete CENTUM DX Parts

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

Quality Control for the CENTUM DX Range

CENTUM DX control cards, including the DX11*A S9081BE-0, incorporate complex multi-layer PCBs with proprietary YOKOGAWA ASICs and dual-ported RAM for redundancy synchronization. Standard visual inspection and power-on testing are insufficient for validating these modules. DriveKNMS applies a structured test protocol specific to the DX backplane architecture:

• Backplane bus signal integrity verification using oscilloscope capture at defined test points.
• Duplex switchover simulation: forced primary-to-standby failover with sub-100ms switchover time validation.
• Firmware version identification and compatibility cross-check against target FCS revision.
• Full I/O channel functional test against YOKOGAWA factory acceptance test (FAT) criteria.
• Condition review: Available condition, photos, test records and documentation are checked before quotation according to the requested model.