YOKOGAWA CENTUM VP / CS 3000 Battery Modules: S9400UK

Technical Dossier

Product Details And Specifications

YOKOGAWA CENTUM VP / CS 3000 Series: Comprehensive Battery Module Range and Technical Overview

The YOKOGAWA CENTUM VP and CS 3000 series represent the backbone of distributed control systems (DCS) deployed across global heavy industries, including petrochemical refineries, nuclear power stations, LNG terminals, pulp and paper plants, and offshore platforms. With installations spanning over 30,000 sites worldwide, the CENTUM platform is one of the most widely adopted DCS architectures in process automation history. Battery backup modules within this ecosystem — including the S9400UK — are critical for maintaining controller memory integrity and ensuring uninterrupted process continuity during power interruptions.

The Evolution of CENTUM VP / CS 3000 Architecture

YOKOGAWA's CENTUM platform has evolved through several major generations since its introduction in the 1970s. The CENTUM CS (Classic Series) launched in the early 1990s introduced a fully digital, redundant field control station (FCS) architecture. CENTUM CS 3000 followed in 1998, establishing the standard for open-network DCS with Vnet/IP communication and modular I/O expansion. CENTUM VP (Versatile Platform), released in 2008, extended backward compatibility with CS 3000 hardware while introducing enhanced cybersecurity, virtualization support, and ISA-100 wireless integration.

Battery modules such as the S9400UK were designed to serve across both CS 3000 and VP generations, providing SRAM and clock backup for field control units (FCU) and field control stations (FCS). As the CS 3000 platform has entered its end-of-active-support phase, sourcing genuine battery packs for long-term maintenance has become a primary concern for asset-intensive industries committed to brownfield operations.

CENTUM VP / CS 3000 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified components within the YOKOGAWA CENTUM VP and CS 3000 ecosystem, organized by functional category:

Battery & Power Backup Modules

S9400UK: Lithium battery pack for FCS/FCU SRAM and real-time clock backup
S9401UK: Replacement battery unit for redundant controller nodes
S9402UK: Extended-life battery module for high-cycle FCS environments

Power Supply Modules

PW481: 24 VDC input power supply module for node units
PW482: Dual-redundant power supply for field control stations
PW484: High-capacity power supply for expanded I/O node configurations
PW701: AC/DC power supply module for CENTUM VP cabinet systems

CPU / Field Control Station Modules

CP345: Dual-redundant field control unit processor for CS 3000
CP451: Standard FCS CPU module for CENTUM VP R5/R6
CP461: Enhanced FCS CPU with expanded memory for VP R6
CP471: High-performance FCS processor for large-scale VP installations

Digital I/O Modules

ADV151: 16-channel digital input module, 24 VDC
ADV161: 16-channel digital output module, relay contact type
ADV551: 32-channel digital input, high-density node card
ADV561: 32-channel digital output, transistor sink type

Analog I/O Modules

AAI141: 16-channel analog input, 4–20 mA with HART support
AAI841: 8-channel analog output, 4–20 mA HART-enabled
AAI543: 16-channel analog input, high-speed scanning for fast-loop control
AAT141: 16-channel thermocouple/RTD analog input module

Communication & Network Modules

ALR111: Vnet/IP communication interface module for FCS node expansion
ALE111: Ethernet interface card for CENTUM VP HIS/ENG connectivity
ACM12: FOUNDATION Fieldbus H1 communication module
ACM22: PROFIBUS DP master communication adapter

Sourcing Hard-to-Find & Obsolete CENTUM VP / CS 3000 Parts

DriveKNMS maintains a dedicated inventory of YOKOGAWA CENTUM VP and CS 3000 components, with particular focus on battery modules, power supplies, and CPU cards that are no longer available through standard distribution channels. As YOKOGAWA has progressively transitioned its active support focus to CENTUM VP R6 and the next-generation CENTUM VP R6.09 platform, many CS 3000-era components — including the S9400UK battery pack — are classified as long-lead or discontinued items.

Quality Control for the CENTUM VP / CS 3000 Range

Battery modules and power supply units within the CENTUM VP / CS 3000 series require specialized validation procedures due to their direct interface with backplane bus architecture and controller SRAM circuits. DriveKNMS applies the following test protocol to all units in this category:

Battery Capacity Verification: Each S9400UK and equivalent battery pack is load-tested to confirm residual capacity meets or exceeds 80% of OEM-rated specification. Units failing this threshold are rejected and not offered for resale.

Backplane Compatibility Check: Power modules are bench-tested against CENTUM VP and CS 3000 node unit backplanes to verify correct voltage regulation, inrush current behavior, and fault-detection signaling.

Functional Burn-In: CPU and I/O modules undergo a minimum 48-hour powered burn-in cycle under simulated load conditions to screen for latent component failures.

Communication Bus Integrity: Vnet/IP and fieldbus communication modules are validated using protocol analyzers to confirm correct frame transmission, error handling, and node addressing behavior.