Description:The ABB DSSS170(Part Number 48970001-A)is a core Central Processor Unit(CPU)Module manufactured by ABB.It primarily serves as the main logic execution and system control board for the legacy Advant Station 170 Controller within the Advant OCS(Open Control System)Distributed Control System(DCS)platform.The DSSS170 integrates the microprocessor,memory,and specialized communication controllers necessary for running the real-time control strategy and managing the system’s overall function.Application Scenarios:Consider a large metal smelting facility utilizing an Advant OCS system to manage complex furnace control,temperature profiles,and material handling sequences.The core of this system is the Advant Station 170,which executes all high-level control strategies.The critical pain point for the facility is the dependence on the central processing power to ensure precise,coordinated control across numerous regulatory loops.The ABB DSSS170 is the brain of this controller.It runs the control strategies created in the Advant Engineering Workplace,manages communication with I/O subsystems,and handles network traffic.Should a DSSS170 fail—a common point of vulnerability due to continuous operation and thermal stress—the entire furnace control logic would halt.Immediate replacement with a verified ABB DSSS170 is essential to restore centralized control,prevent costly process material losses,and avert potential safety incidents arising from uncontrolled furnace operations.Parameter:ParameterValue/DescriptionAnnotationProduct ModelDSSS170CPU designation for Advant Station 170.ManufacturerABBGlobal leader in industrial automation and process control.Product CategoryCentral Processor Unit(CPU)Executes control logic and system management tasks.Part Number48970001-ASpecific manufacturer’s orderable revision.System CompatibilityAdvant Station 170 Controller/Advant OCSCore processor for this specific controller family.Core FunctionControl Logic Execution and Data ProcessingRuns the application software in real-time.MemoryIntegrated RAM and Flash/PROMStores the operating system,firmware,and user program.InterfaceProprietary Backplane BusConnects to I/O interfaces and power supply within the controller unit.Data ProcessingReal-Time,High-SpeedEssential for managing rapid process variable changes.Diagnostic FeedbackOn-Board Status LEDsIndicates operating mode,fault status,and bus activity.Technical Principles and Innovative Values:The ABB DSSS170 embodies the Advant OCS philosophy of rugged,centralized control power:Innovation 1:Dedicated Real-Time OS Execution:The DSSS170 runs a specialized,embedded real-time operating system(RTOS)optimized for industrial control applications.This ensures that control loops are executed at precise,deterministic intervals,regardless of network or operator station loading,guaranteeing system stability.Innovation 2:Integrated Communication Management:The DSSS170 is not just a CPU;it integrates communication hardware that manages the proprietary system bus and network interfaces.This tight integration ensures low-latency data exchange between the CPU and the various I/O and peer controllers,crucial for complex inter-controller coordination.Innovation 3:Robust Memory Architecture:The board’s memory is designed with industrial durability in mind,often employing non-volatile memory for program storage and incorporating error detection/correction mechanisms.This protects the control program against power transients and ensures fast recovery after a power cycle.Innovation 4:High Reliability Through Component Selection:Despite its age,the DSSS170 was built using high-specification,industrial-grade components known for their long Mean Time Between Failures(MTBF),a characteristic that has allowed the Advant OCS platform to remain operational in mission-critical facilities for decades.Application Cases and Industry Value:In a large pharmaceutical manufacturing facility,the Advant Station 170 controllers were responsible for managing the precise temperature and mixing sequences for bulk chemical synthesis reactors.The high value of the product demanded absolute reliability.Application Process:The facility maintained a validated,tested spare of the ABB DSSS170 to mitigate obsolescence risk.During a routine inspection,high error counts were detected on the bus managed by the DSSS170.Proactive maintenance was scheduled to replace the board.Improvements and User Feedback:The pre-emptive replacement of the potentially failing ABB DSSS170 prevented an unplanned trip,which would have resulted in the loss of an entire batch of expensive chemicals.Enhancing Automation Levels:The consistent,high-speed performance of the replacement DSSS170 ensured the reactor’s complex multi-step recipe was executed with sub-second timing precision.Reducing Maintenance Costs:By performing a planned replacement based on diagnostic feedback,the facility avoided the extensive cleanup and validation costs associated with a sudden,uncontrolled process shutdown.Ensuring Production Safety:The immediate restoration of full CPU function guaranteed that the safety interlocks and pressure relief logic remained under active control,maintaining regulatory compliance and operator safety.Related Product Combination Solutions:The ABB DSSS170 is central to the Advant Station 170 structure and works with:ABB PFVD170:The Video Controller Module often used in the Advant Station 170 rack,which communicates with the DSSS170 for display data.ABB PFKC101:A Controller Communication Interface module that handles network communication external to the controller,managed by the DSSS170.ABB PP836:An Operator Station Interface module,a predecessor to modern HMIs,that would interact with the DSSS170 over the system bus.ABB TPC 110:The Power Supply Module for the Advant Controller rack,providing the necessary regulated power to the DSSS170.ABB RTAC 01:A Redundant Termination Unit used to connect the process I/O wiring to the controller backplane managed by the DSSS170.ABB AC 450:A higher-end Controller in the same Advant OCS family,which may be running the same control logic but on a different CPU board.ABB PPA C200:An Application Program Memory Module that plugs into the same rack,storing and protecting the control strategy executed by the DSSS170.Installation,Maintenance,and Full-Cycle Support:The ABB DSSS170 is a highly sensitive and critical component;therefore,Installation Preparation requires meticulous attention to grounding and ESD protection.Before handling,technicians must be properly grounded,and the module should remain in its anti-static packaging until immediately before insertion into the Advant Station 170 chassis.Its operational Environmental Adaptability is tied to the controller’s overall enclosure integrity;maintaining clean,temperature-controlled cabinet conditions is crucial for the longevity of this high-integration board.Routine Maintenance for the DSSS170 involves monitoring the board’s status LEDs and running system diagnostics from the Advant Engineering Workplace to check for unexpected bus errors or CPU load spikes.As a legacy CPU,proactive Spare Parts Replacement is highly recommended.Fault Handling for a DSSS170 failure involves a cold swap—the controller must be powered down before the replacement.Careful attention must be paid during commissioning to ensure the correct application program and firmware are loaded onto the replacement board from a backup source.We provide dedicated Technical Support for the ABB DSSS170 and the entire Advant OCS platform,specializing in the migration and maintenance of these critical,obsolete CPU cards.Our service commitment includes rigorous functional testing to ensure the module’s real-time clock,bus interface,and memory integrity are verified before dispatch.We stock reliable,tested spares to guarantee immediate and compatible Spare Parts Replacement,safeguarding your crucial process control systems.

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