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        • Lifecycle status

          Discontinued / Obsolete by OEM
          Apter Power offers original Yokogawa ADV551-P50 S2 digital output modules, providing reliable, factory-fresh DCS components with secure dual-redundant support to guarantee precision process actuation.

        ADV551-P50 S2

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        The YOKOGAWA ADV551-P50 S2 is a 32-channel isolated digital output module engineered for Yokogawa's CENTUM VP and CS 3000 Distributed Control Systems (DCS) to manage critical transistor contact signaling.
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        Ships by Thursday, October 29
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for ADV551-P50 S2

        • Manufacturer:
          Yokogawa
        • Part Number:
          ADV551-P50 S2
        • Product Family:
          Centum CS-Centum VP
        • Product Type:
          Digital Output Module
        • Stock:
          14
        • Rated Applied System Voltage:
          24 V DC
        • Maximum Continuous Load Current:
          100 mA per channel @ 26.4 V DC
        • Output On-State Voltage Drop:
          Max. 2.0 V DC
        • Off-State Leakage Current:
          Max. 0.1 mA
        • Galvanic Isolation (Signal-to-System):
          2 kV AC for 1 minute
        • Inter-Group Isolation (Between Commons):
          500 V AC for 1 minute (16 channels per common group)
        • On-Internal Current Consumption:
          700 mA @ 5 V DC
        • Field-Side Current Consumption:
          60 mA @ 24 V DC
        • Pulse Width Range / Resolution:
          8 ms to 7200 seconds / Resolution: 8 ms
        • Operating Temperature Limits:
          0 to 50°C (Standard FIO node application environment)
        • Storage & Transit Temperature:
          -20 to 85°C (Moisture non-condensing state)
        • Ambient Relative Humidity:
          10% to 90% RH (Non-condensing)
        • Weight:
          0.18 kg
        • Estimated shipping dimensions:
          3.2x10.6x13cm
        • Tariff Code:
          8537101190
        • Country of origin:
          Japan
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Applications Performance & Efficiency Environmental Ratings

        Features:

        • Flexible Multi-Pattern Function Mapping
        • High-Density Channel Segregation
        • Bumpless Redundant Architecture Support
        The YOKOGAWA ADV551-P50 S2 offers channel assignment versatility through three predefined software patterns, enabling engineers to map individual channels to standard status outputs, one-shot pulse width controls, or time-proportioning circuits. This native hardware flexibility eliminates the need to buy distinct specialty modules, reducing spare parts overhead and simplifying inventory across the facility.

        Packing 32 independent output loops into a ultra-slim 32.8mm form-factor, the YOKOGAWA ADV551-P50 S2 leverages an efficient 16-channel-per-common isolation topology. By grouping field loops into distinct, galvanically isolated segments, it protects system logic from field-side surges and isolates field-side wiring faults to a single common group.

        Designed for high-availability process safety and control, the YOKOGAWA ADV551-P50 S2 fully supports dual-redundant configurations within standard ESB or Optical ESB bus nodes. When deployed in pairs, active diagnostic hardware monitors module health to execute a fast, bumpless switchover if a fault occurs, ensuring uninterrupted process outputs.

        The ADV551-P50 S2 YOKOGAWA Digital Output Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        YOKOGAWA ADV551-P50 S2 Digital Output Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        YOKOGAWA ADV551-P50 S2 Digital Output Module

        General

        • Manufacturer YOKOGAWA
        • Model ADV551-P50 S2
        • Condition New Original ready stock
        • Product Family ADV151-P50 S2,ADV151-P53 S2,ADV551-P10 S2
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Petrochemical and Refinery Logic Interlocking: The module handles the precise discrete actuation of safety-critical solenoids, emergency shutdown (ESD) valves, and blocking systems across refining units. Its redundant architecture ensures that interlock commands are executed reliably, preventing hazardous conditions from scaling up.
        • Boiler Combustion Control Systems: Used in power generation utilities, it manages fuel-trip valves, purge valves, and igniter sequences. Its One-shot Pulse Width Output function allows exact control over burner ignition pulses, improving combustion efficiency and system response times.
        • Chemical Batch Dosing and Metering: Ideal for chemical blending facilities where precision dosing is critical. By utilizing the module's Time-Proportioning ON/OFF output mode, engineers can actuate digital dosing pumps in proportion to flow loops, achieving accurate ingredient ratios without relying on complex external controllers.
        • Water and Wastewater Pump Station Sequencing: Manages large-scale fluid transport by driving motorized valve operators and pump starters across multi-pump municipal networks. The module's channel-to-channel isolation prevents electrical noise from heavy field machinery from disrupting the core DCS backplane.
        • Sub-Millisecond Execution Responsiveness: With a nominal status output response time of 3 milliseconds or less, the module ensures high-speed command transmission from the processor to field actuators. This rapid execution loop minimizes dead-time in critical discrete control processes.
        • Hardware-Level Pulse Modulation Overload Mitigation: Offloading pulse-width resolution and time-proportioning calculations to the module's internal circuitry frees up precious CPU processing cycles on the Field Control Station. This distributed processing design allows the DCS to maintain fast scan rates even during high-density I/O operations.
        • Low Power Dissipation Profile: Drawing just 60 mA from the external 24 V DC field supply and 700 mA from the internal 5 V DC rail, the module minimizes heat buildup inside control cabinets. This thermal efficiency extends component life and helps prevent localized hot spots.
        • Bumpless Redundant Failover Security: The module's active-parallel hardware architecture enables seamless control transfer between redundant modules. By matching output values down to the millisecond, it prevents field actuators from dropping out or chattering during a module swap.
        • Industrial Control Room Thermal Resilience: Formulated to operate reliably in ambient temperatures up to 50°C, the module handles the elevated internal temperatures typical of dense marshaling enclosures without requiring dedicated component cooling fans.
        • Broad Cold-Start and Extreme Storage Tolerance: With a storage rating spanning from -20°C up to 85°C, the unpowered module resists structural degradation during transit or long-term warehouse storage in harsh regional climates.
        • High Relative Humidity Endurance: Designed to operate in environments with 10% to 90% non-condensing relative humidity, its circuit boards are protected against atmospheric moisture, preventing parasitic leakage paths between high-density channels.
        • Substantial Dielectric and Galvanic Protection: Featuring a 2 kV AC isolation barrier from signal lines to system logic, the module acts as a robust electrical shield. This high dielectric rating protects sensitive microprocessors from large common-mode voltage surges originating in the field.
        Description
        The YOKOGAWA ADV551-P50 S2 serves as a core execution component within the CENTUM system architecture, specializing in current-sink transistor outputs. Built to bridge cyber-control logic with physical field elements, it handles up to 32 discrete loops, minimizing cabinet space while maintaining complete electrical segregation between the system logic and field instrumentation.

        Equipped with advanced signaling capabilities, the YOKOGAWA ADV551-P50 S2 transcends basic ON/OFF status signaling. It features integrated hardware-level support for One-shot Pulse Width Output (PW) and Time-Proportioning ON/OFF output (TP), empowering control engineers to actuate specialized valves, dosing pumps, and heating elements without imposing extra processing overhead on the Field Control Station (FCS) processor.

        Engineered with dual-redundancy capability, the YOKOGAWA ADV551-P50 S2 allows identical modules to be installed in paired FIO slots to ensure continuous, bumpless control transfer during a hardware fault. Its rugged, fanless architecture is designed to withstand the electrical noise, ambient fluctuations, and galvanic stressors common to industrial control rooms and marshaling panels.

        The YOKOGAWA ADV551-P50 S2 utilizes a 16-channel per-common isolation topography, allowing field wiring to be segregated into distinct power groups. This design prevents localized wiring faults from propagating across the entire module, drastically increasing localized fault tolerance and simplifying routine loop maintenance or multi-zone troubleshooting.
        Alternative Names
        ADV551 ADV551 P50 S2 ADV55I-P50 S2 ADV551-P5O S2 ADV551-P10 S2 ADV551-P53 S2 ADV161-P50 S2
        Technical notes
        The YOKOGAWA ADV551-P50 S2 must be configured within the CENTUM VP builder software with proper point mode patterning (Pattern 1, 2, or 3) to align the hardware channels with the intended status, pulse, or time-proportional application logic. Inductive field loads require an external spark killer diode wired in parallel to protect the YOKOGAWA ADV551-P50 S2 current-sink transistors from transient back-EMF voltage spikes during de-energization.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        Which firmware revisions and software builders natively support the YOKOGAWA ADV551-P50 S2 within the CENTUM platform?
        The YOKOGAWA ADV551-P50 S2 is fully compatible with CENTUM CS 3000 and CENTUM VP engineering environments. It requires FIO system software capability and matches standard digital output configurations. When implementing advanced features like Pulse Width Output, ensure the system’s Function Block definitions correspond to Point Modes PW or TP under the module's I/O configuration properties.
        What are the exact limitations regarding terminal assignment when mixing Pulse Width (PW) and Time-Proportioning (TP) modes on the YOKOGAWA ADV551-P50 S2?
        When configuring the YOKOGAWA ADV551-P50 S2 for PW or TP point modes, you must use pairs of contiguous terminal channels, and the first channel in the pair must be an odd number. If an odd terminal is assigned as PW/TP, the immediately following even terminal is locked to that operational type and cannot be split into a standard status output.
        What wiring options are available for the YOKOGAWA ADV551-P50 S2, and how do they impact the module's isolation performance?
        The YOKOGAWA ADV551-P50 S2 interfaces with field wiring via an ATD5S pressure clamp terminal block, an AKB331 dedicated cable interface, or a MIL connector cable. Note that while the module itself boasts a 2 kV AC signal-to-system isolation, using a dedicated cable assembly limits the field-to-system withstanding voltage rating to 500 V AC.
        How does the internal diagnostics engine of the YOKOGAWA ADV551-P50 S2 report field-side loop power failure or channel driving errors?
        The YOKOGAWA ADV551-P50 S2 actively monitors its 5V DC internal logic rail and external 24V DC loop supply. If the external field power supply drops below 20.4 V DC, a module-status error is sent over the ESB/Optical ESB bus to the FCS. This triggers a system alarm in the CENTUM VP Human Interface Station (HIS) graphics panel to pinpoint the affected slot.
        What are the environmental limits and mounting restrictions for installing the YOKOGAWA ADV551-P50 S2 in heavy industrial marshaling cabinets?
        The YOKOGAWA ADV551-P50 S2 must be mounted vertically within an approved FIO Node Unit (such as the ANB10 or ANB11) to ensure proper convective airflow. It operates reliably within an ambient temperature window of 0 to 50°C and a non-condensing relative humidity range of 10% to 90%, shielding sensitive internal transistor junctions from thermal stress.
        What step-by-step hot-swapping sequence must be followed when replacing a faulted YOKOGAWA ADV551-P50 S2 module in an active redundant node?
        If the YOKOGAWA ADV551-P50 S2 is operating in a dual-redundant configuration, hot-swapping is fully supported. First, verify that the standby module's status LED indicates it is active and controlling the loop. Loosen the retaining screws of the faulted module, disengage it from the FIO backplane, transfer the terminal block or interface cable to the replacement unit, and insert the new module into the slot.

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