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        AAI143-H50 S1

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        The YOKOGAWA AAI143-H50 S1 is 16-channel isolated analog input module designed specifically for the CENTUM VP and CS 3000 Distributed Control Systems (DCS).
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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 AAI143-H50 S1

        • Manufacturer:
          Yokogawa
        • Part Number:
          AAI143-H50 S1
        • Product Family:
          Centum CS-Centum VP
        • Product Type:
          Analog Input Module
        • Channels:
          16, Fully Isolated
        • Input Signal:
          4 to 20 mA DC
        • Digital Protocol:
          HART Communication (Supported)
        • Input Impedance:
          270 Ω (20 mA) to 350 Ω (4 mA)
        • Accuracy:
          ±16 µA (±0.1% of full scale)
        • Resolution:
          16-bit
        • Update Period:
          10 ms
        • Isolation Voltage:
          1500 V AC (Input to System)
        • Transmitter Supply:
          ≥ 19.0 V DC @ 20 mA
        • Power Consumption:
          230 mA (5V DC); 540 mA (24V DC)
        • Drift:
          ±16 µA / 10°C
        • Operating Temperature:
          -20°C to +70°C
        • Weight:
          0.2 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 Operating Environment Performance & Efficiency Applications

        Features:

        • Fully Isolated Architecture for Signal Integrity
        • Seamless HART Digital Integration
        • "S1" Factory-Ready Bundle Configuration
        The YOKOGAWA AAI143-H50 S1 provides 16 fully isolated channels, eliminating ground loops and ensuring accurate data acquisition even in electrically noisy environments like heavy industrial switchgear rooms.

        Beyond standard 4-20 mA, the module supports HART protocol, enabling access to smart transmitter diagnostics and secondary variables directly through your CENTUM VP DCS, improving asset management efficiency.

        While the standard ordering code is AAI143-H53/K4A00, the YOKOGAWA AAI143-H50 S1 serves as a pre-defined assembly that integrates the module and the ATK4A-00 adapter, streamlining logistics and ensuring immediate compatibility with AEA4D termination boards upon delivery.

        The AAI143-H50 S1 YOKOGAWA 16-Channel Analog Input Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        YOKOGAWA AAI143-H50 S1 16-Channel Analog Input 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 AAI143-H50 S1 16-Channel Analog Input Module

        General

        • Manufacturer YOKOGAWA
        • Model AAI143-H50 S1
        • Condition New Original ready stock
        • Product Family AAI135-S00 S2,AAI143-S50 S1,AAI143-H53 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.
        • Extended Temperature Range (-20°C to +70°C):Unlike commercial-grade electronics that fail in unheated control rooms or outdoor cabinets, this module is rated for extreme cold starts and high-temperature summer conditions. It can be installed in non-air-conditioned shelters, reducing facility construction and HVAC costs.
        • G3 Corrosion Protection (ISA Standard):The "3" suffix code indicates conformal coating applied to the printed circuit board. This protects the module from hydrogen sulfide, chlorine, and other corrosive gases commonly found in pulp mills, wastewater treatment plants, and petrochemical facilities. It significantly extends service life where standard electronics would fail within months.
        • 1500V AC Galvanic Isolation:Field wiring often runs alongside high-power motor cables, inducing common-mode voltage spikes into signal lines. The input-to-system isolation blocks these spikes, protecting the backplane and controller while ensuring that one damaged field device does not take down an entire I/O bank.
        • 95% Non-Condensing Humidity Rating:The module is sealed and conformally coated to operate reliably in high-humidity environments such as outdoor analyzer shelters, tropical climate installations, or cooling tower monitoring stations where condensation is a constant risk to unprotected electronics.
        • High-Density 16-Channel Footprint:By packing 16 isolated channels into a single 32.8 mm wide form factor, the module reduces the number of I/O slots required per control cabinet. A typical 1000-point refinery unit can save several racks, directly lowering cabinet material costs, reducing enclosure footprint, and minimizing installation labor.
        • 10 ms Data Update – Real-Time Responsiveness:A 10 ms scan means the control system sees a pressure spike or temperature excursion within one control cycle of many fast processes (such as compressor anti-surge control). This rapid update enables tighter PID loop tuning, reducing process variability and improving product consistency compared to slower-scanning I/O.
        • Integrated HART – Eliminating Separate Multiplexers:Traditional HART access required dedicated analog input multiplexer cards or handheld communicators. By embedding the modem directly on each channel, the module allows the DCS to poll transmitter diagnostics, calibration dates, and dynamic variables (PV, SV, TV, QV) through the existing wiring – saving thousands of dollars in external hardware per cabinet.
        • Dual-Redundant Ready – Maximizing Uptime:The ability to operate in 1:1 redundant configuration with automatic switchover means that a single module failure does not interrupt the process. For continuous processes (refineries, ethylene plants), this avoids unplanned shutdowns that can cost tens of thousands of dollars per hour in lost production and restart expenses.
        • Refining & Petrochemical Processing:In crude oil distillation and catalytic cracking units, the module captures critical pressure, flow, and temperature readings from remote field transmitters. Its 16 isolated channels prevent ground loop errors that could otherwise trigger false alarms or unnecessary process shutdowns in these electrically noisy environments.
        • Oil & Gas Pipeline Monitoring:For long-distance pipeline custody transfer stations, the HART capability allows operators to retrieve digital diagnostic data from smart pressure transmitters without interrupting the analog 4-20 mA signal. This enables predictive maintenance scheduling rather than reactive repairs.
        • Power Generation (Boiler & Turbine):Monitoring boiler drum level and superheated steam temperature requires high-integrity signal acquisition. The 10 ms update rate ensures that rapid process transients are captured in real time, allowing the control system to respond before safety thresholds are exceeded.
        • Chemical & Pharmaceutical Batch Reactors:In batch processes where recipe consistency is critical, the module supports 2-wire loop-powered transmitters directly, eliminating the need for external power supplies. The ±16 μA accuracy ensures precise temperature and pH control batch after batch, directly impacting product quality and yield.
        Description
        The YOKOGAWA AAI143-H50 S1 stands out as a comprehensive field I/O solution, factory-equipped with the ATK4A-00 KS Cable Interface Adapter. This "S1" bundle simplifies high-density cabinet wiring by providing a plug-and-play connection to AEA4D terminal boards, significantly reducing installation time and minimizing potential wiring errors in large-scale projects. The module supports both 2-wire and 4-wire transmitters, with each of the 16 channels configurable independently to handle diverse field devices.

        In terms of performance, the YOKOGAWA AAI143-H50 S1 delivers exceptional accuracy of ±16 µA (±0.1% of full scale) with a rapid 10 ms data update period. Its robust isolated design withstands 1500 V AC between input and system, effectively eliminating ground loops and common-mode noise that typically plague industrial environments. Whether deployed in oil refineries, chemical plants, or power generation facilities, this module maintains signal integrity and ensures reliable process data for critical control loops.

        Furthermore, the HART communication capability of the YOKOGAWA AAI143-H50 S1 enables advanced asset management. It allows the DCS to retrieve secondary variables, perform remote configuration, and access diagnostic data from smart field instruments without requiring additional hardware or handheld communicators. This feature transforms the module from a simple signal converter into a gateway for predictive maintenance and real-time device health monitoring.
        Alternative Names
        AAI143H50S1 AAII43H50S1 AAI143H50SI AAI143H5OS1 AAII43H5OSI AAI143-H50 SI AAI143-H5O S1 AAII43-H50 S1
        Technical notes
        While supporting dual-redundant configurations for maximum system availability, the YOKOGAWA AAI143-H50 S1 cannot be used with Zener barriers for intrinsic safety applications; instead, users must employ isolation barriers. Additionally, the transmitter power supply voltage (≥19.0 V @ 20 mA) must be carefully calculated to account for voltage drops in external wiring to ensure proper operation of connected 2-wire devices.
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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
        What is the advantage of the YOKOGAWA AAI143-H50 S1 version over the standard AAI143-H50?
        The "S1" is a factory-assembled bundle that includes the ATK4A-00 KS Cable Interface Adapter pre-mounted. This eliminates the need to source and install the adapter separately, ensuring a "plug-and-play" connection to AEA4D terminal boards and reducing potential wiring errors during system commissioning.
        Can the YOKOGAWA AAI143-H50 S1 be used in a redundant configuration for critical processes?
        Yes, it fully supports dual-redundant configuration. You can install two identical modules in adjacent slots (odd/even) on the same node unit. If the primary module fails, the system switches to the standby module seamlessly, maintaining uninterrupted loop power and signal acquisition.
        What happens to the field signal if the YOKOGAWA AAI143-H50 S1 loses power?
        The module is designed with a "Power OFF" input resistance of ≥500 kΩ. This high impedance effectively disconnects the module from the loop, preventing it from acting as a significant load on the field device or shorting the loop.
        Does the YOKOGAWA AAI143-H50 S1 support 2-wire transmitters, and how is the power managed?
        Yes, it supports both 2-wire (loop-powered) and 4-wire (externally powered) transmitters. The setting is configured individually per channel via hardware pins. For 2-wire transmitters, the module provides a regulated supply voltage of ≥19.0 V at 20 mA on the terminals.
        Is the YOKOGAWA AAI143-H50 S1 suitable for safety-related applications or SIL loops?
        While robust, the standard YOKOGAWA AAI143-H50 S1 is intended for standard process control (DCS). For Safety Instrumented Systems (SIS), consult the specific ProSafe-RS documentation, although the underlying isolation technology supports high-integrity installations.

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