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        • Lifecycle status

          Discontinued / Obsolete by OEM
          Apter Power offers original Yokogawa AIP502 S1 V-Net coupler cards, delivering factory-fresh and fully tested DCS communication components to ensure low-latency data backhauling and high system availability.

        AIP502 S1

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        1001 reviews ｜ Need a Specific Revision?
        The YOKOGAWA AIP502 S1 is a industrial-grade V-Net Coupler Module designed to provide seamless, real-time control network communication within Yokogawa’s legacy CENTUM CS and modern CENTUM VP Distributed Control Systems (DCS).
        In Stock
        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 AIP502 S1

        • Manufacturer:
          Yokogawa
        • Part Number:
          AIP502 S1
        • Product Family:
          Centum CS-Centum VP
        • Product Type:
          V-Net Coupler Module
        • Stock:
          1
        • Operating Temperature Range:
          0°C to +50°C (32°F to 122°F)
        • Storage Temperature Range:
          -20°C to +85°C (-4°F to 185°F)
        • Ambient Relative Humidity:
          10% to 90% RH (Non-condensing)
        • Temperature Gradients:
          ≤ ± 10°C hour
        • Dielectric Strength:
          1500 VAC for 1 minute between control circuit and ground
        • Isolation Resistance:
          ≥ 20 MΩ at 500 VDC
        • Vibration Resistance:
          0.5 mm peak-to-peak amplitude (10 to 55 Hz)
        • Shock Resistance:
          15 G (150 m/s²) for 11ms, half-sine wave pulse
        • Weight:
          0.5 kg
        • Estimated shipping dimensions:
          5x25x12.8cm
        • 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 Monitoring & Control Firmware & Updates

        Features:

        • Deterministic Token-Passing V-Net Protocol Engine
        • Advanced Slot-Level Optical Signal Isolation
        • Hot-Swappable Backplane Architecture Integration
        The YOKOGAWA AIP502 S1 incorporates a dedicated onboard communication processor that executes Yokogawa's proprietary token-passing protocol with microsecond precision. This ensures that time-critical process control commands and emergency shutdown signals are always prioritized over routine diagnostic data packets, eliminating data collisions and unpredictable communication delays across the control system.

        To prevent localized electrical faults from cascading through the control network, the YOKOGAWA AIP502 S1 is engineered with high-speed galvanic and optocoupler isolation circuits. This architecture isolates the sensitive internal logic board from the physical external V-Net transmission bus lines, mitigating the damaging effects of ground loops and high-voltage surges.

        The YOKOGAWA AIP502 S1 is fully compliant with Yokogawa's live-insertion specifications, allowing plant maintenance personnel to remove or replace the module directly from the powered backplane. Integrated pre-charge circuitry prevents voltage dips on the system power bus during insertion, protecting adjacent operational modules from reset conditions.

        The AIP502 S1 YOKOGAWA V-Net Coupler Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Bently Nevada 330354-040-24-05 3300 XL 25mm Extension Cable 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 AIP502 S1 V-Net Coupler Module

        General

        • Manufacturer YOKOGAWA
        • Model AIP502 S1
        • Condition New Original ready stock
        • Product Family AIP532 S1,AIP562 S1,AIP504-10 S1
        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 Refinery Distillation Columns: The module handles critical real-time pressure, temperature, and flow data transmission between distillation columns and the central control room, maintaining safe operating envelopes.
        • Continuous Power Generation Boiler Control: It coordinates rapid fuel-to-air ratio adjustments and turbine synchronization signals across the V-Net network, ensuring high system stability and load-following capabilities.
        • Large-Scale Pharmaceutical Batch Processing: It provides deterministic data delivery to satisfy stringent FDA batch-tracking requirements, ensuring no data gaps occur during critical sterilization and chemical synthesis phases.
        • Municipal Wastewater Treatment Networks: It manages communication across distributed pump stations and aeration basins, enabling stable long-distance data exchange across sprawling plant topologies.
        • Dual-Loop Redundancy Status Tracking: The module continuously monitors the active signal status of both V-Net paths (Bus A and Bus B) and reports real-time health data back to the system diagnostic console.
        • System Backplane Voltage Supervision: It monitors its own 5V DC power rails, triggering a system alert if input voltages drop below acceptable tolerances (< 4.75VDC), allowing for predictive power supply maintenance.
        • LED Status Indicator Diagnostics: The front panel features hardware status LEDs (such as RDY, RCV, and SND) that give maintenance technicians immediate visual confirmation of network traffic and module readiness.
        • Automatic Bus-Error Isolation: If a catastrophic fault occurs on a cable segment, the module quickly isolates the compromised link to protect the integrity of the remaining network segments.
        • Centralized System Software Synchronization: Firmware configurations for the module are managed directly through Yokogawa’s Engineering Station, ensuring that network parameters remain consistent across all nodes.
        • Offline Firmware Verification Procedures: Firmware checks must be performed while the associated Field Control Station is offline or placed in a redundant standby state to prevent process disturbances during validation.
        • Strict Hardware Revision Control: Each module's flash memory version is hardcoded alongside its physical style number (S1), preventing incompatible software images from being written to the module.
        • Patch Validation for Security Compliance: All firmware updates follow rigorous validation protocols to meet NERC CIP and IEC 62443 industrial cybersecurity standards, securing the system against unauthorized network exploits.
        Description
        The YOKOGAWA AIP502 S1 acts as the crucial hardware link for the V-Net/IP and token-passing V-Net control networks. It ensures deterministic, high-speed data transmission between Field Control Stations (FCS) and Operation Stations (HIS), minimizing latency in mission-critical process loops.

        Built specifically to survive harsh process environments, the YOKOGAWA AIP502 S1 features advanced optical and electrical isolation. This robust design safeguards the control network against electromagnetic interference (EMI) and transient voltage spikes typical in heavy industrial plant environments.

        Designed for mission-critical reliability, the YOKOGAWA AIP502 S1 supports redundant control network topologies. If a primary communication line fails, the module seamlessly switches to the backup path without losing process variables, preventing unscheduled plant shutdowns.

        As automation systems evolve, the YOKOGAWA AIP502 S1 bridges older legacy equipment with upgraded control hardware. This helps plant operators maximize the lifecycle of their existing hardware investments while ensuring effortless integration during system expansions.
        Alternative Names
        AIP502 A1P502 S1 AIP502 SI AIP5O2 S1 AIP512 AIP532 S1 AIP562 S1 AIP504-10 S1
        Technical notes
        The YOKOGAWA AIP502 S1 must be properly seated in its dedicated card slot with all retaining screws secured to ensure continuous grounding and prevent intermittent V-Net communication errors. Additionally, system engineers must verify that the YOKOGAWA AIP502 S1 firmware revision matches the current system software release of the CENTUM station to avoid unexpected hardware initialization faults during startup.
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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
        How does the YOKOGAWA AIP502 S1 manage firmware compatibility when installed alongside legacy Style 1 cards in an existing node?
        The YOKOGAWA AIP502 S1 uses embedded flash memory to load its operating parameters. During initialization, the host Field Control Station (FCS) checks the module's style code. To prevent mismatches, the YOKOGAWA AIP502 S1 automatically adjusts its communication timing states to synchronize with older style cards on the same bus segment, provided the system builder software has been configured with the correct generation parameters.
        What specific diagnostic registers can engineers poll to monitor the communication health of the YOKOGAWA AIP502 S1?
        The YOKOGAWA AIP502 S1 continuously reports its diagnostic status to the system's software maintenance view. Engineers can monitor specific internal parameter blocks that track CRC error counts, frame alignment faults, token-loss timeouts, and physical layer loopback test failures. An increase in these registers indicates physical cable degradation or loose connections before a hard failure occurs.
        Can the YOKOGAWA AIP502 S1 be integrated into third-party industrial networks via a standard gateway?
        No, the YOKOGAWA AIP502 S1 communicates using a highly secured, proprietary V-Net protocol designed strictly for internal Yokogawa systems. To bridge data from the YOKOGAWA AIP502 S1 to a third-party PLC or SCADA system (such as Rockwell or Siemens), you must route the data through a Yokogawa Communication Gateway Unit (ACG10S or similar) or an ALR-style module configured for Modbus TCP/RTU or OPC UA.
        What certifications does the YOKOGAWA AIP502 S1 carry for installation in hazardous Class I, Division 2 explosive atmospheres?
        The YOKOGAWA AIP502 S1 complies with global safety standards, including FM, CSA, and ATEX Zone 2 certifications for non-incendive electrical equipment. When installing the YOKOGAWA AIP502 S1 in hazardous areas, it must be mounted within an enclosure that requires a tool for opening, ensuring the module cannot be unplugged while energized unless the area is known to be non-hazardous.
        What environmental restrictions must be enforced when deploying the YOKOGAWA AIP502 S1 in offshore petrochemical installations?
        When deploying the YOKOGAWA AIP502 S1 in coastal or offshore environments, it must be installed inside a sealed, climate-controlled cabinet with an IP54 or NEMA 4X rating to manage humidity. Because the module is not natively conformal-coated against severe G3-level corrosive gases (H₂S, SO₂), active air filtration or purging systems must be maintained to prevent atmospheric corrosion on the gold-plated connector pins.

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