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        YOKOGAWA AMM12T S2
        YOKOGAWA AMM12T S2
        YOKOGAWA AMM12T S2
        YOKOGAWA AMM12T S2
        YOKOGAWA AMM12T S2
        YOKOGAWA AMM12T S2
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          Purchase factory-original Yokogawa I/O hardware from Apter Power to ensure precise process regulation, straightforward field expansion, and maximum signal accuracy across your plant.

        AMM12T S2

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        1001 reviews ｜ Need a Specific Revision?
        The Yokogawa AMM12T S2 is a voltage input multiplexer module with 16 channels, -10 to 10V DC range, 1 MΩ impedance, and 1-second update for CENTUM systems.
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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.
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        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 AMM12T S2

        • Manufacturer:
          Yokogawa
        • Part Number:
          AMM12T S2
        • Product Family:
          Centum CS-Centum VP
        • Product Type:
          Input Multiplexer Module
        • Stock:
          1
        • Input Channels:
          16 points
        • Input Range:
          -10 to 10 V DC
        • Allowable Input Voltage:
          -30 to 30 V DC
        • Input Resistance:
          1 MΩ
        • Accuracy:
          ±4 mV
        • Current Consumption:
          500 mA or less (5.0 V DC)
        • Max Modules per Nest:
          Up to 16
        • Effect of 10°C Change:
          ±8 mV or less
        • Weight:
          0.46 kg
        • Estimated shipping dimensions:
          5.1x22.9x7.6cm
        • Tariff Code:
          8517795000
        • 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 Application Firmware & Updates Configuration

        Features:

        • Receives up to 16 points of -10 to 10V DC signals with 1 MΩ impedance.
        • Provides ±4 mV accuracy with signal isolation between systems for noise immunity.
        • Input signals and ranges are specified via software for flexible application.
        The AMM12T S2 provides 16 channels of DC voltage input with a range of -10 to 10 V DC, enabling high-density signal acquisition from field devices. Each channel features 1 MΩ input resistance and can withstand up to -30 to 30 V DC without damage. The AMM12T S2 is installed in AMN11 or AMN12 nests and supports up to 16 modules per nest, allowing up to 256 input points in a single nest configuration. The M4 screw terminal connections provide secure and reliable wiring for demanding industrial environments. This high-density capability makes the AMM12T S2 ideal for large-scale process control applications requiring extensive analog input monitoring.

        The AMM12T S2 delivers ±4 mV accuracy, ensuring precise measurement of voltage signals for critical process control. The module provides signal isolation between input signals and the system, effectively eliminating ground loops and protecting against electrical noise interference common in industrial environments. The data update period of 1 second ensures timely process monitoring for responsive control actions. The AMM12T S2 also features ambient temperature compensation with ±8 mV maximum deviation per 10°C change, maintaining accuracy across varying environmental conditions. This precision and isolation make the AMM12T S2 suitable for demanding applications where measurement integrity is essential.

        The AMM12T S2 allows input signals and ranges to be specified via software, providing flexibility for different application requirements without hardware changes. This reduces engineering time and simplifies system reconfiguration. The module includes disconnection detection capability to alert operators of wiring faults. To protect against corrosion, dummy covers (T9081EF) must be installed in vacant slots when the AMM12T S2 is not used in all positions. The AMM12T S2 consumes only 500 mA at 5.0 V DC, ensuring efficient operation within the power budget of the I/O Module Nest.

        The AMM12T S2 YOKOGAWA Input Multiplexer Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

        YOKOGAWA AMM12T S2 Input Multiplexer Module Manuals, Datasheets, Drivers, 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 AMM12T S2 Input Multiplexer Module Specs

        General

        • Manufacturer YOKOGAWA
        • Model AMM12T S2
        • Condition New Original ready stock
        • Product Family AMM22 S3,AMM32 S3,AMM32J S1,AMM42 S3
        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.
        • Temperature Profiling Matrices: Extensively used to capture millivolt (mV) inputs from massive matrices of thermocouples embedded in refinery distillation towers, catalytic reactors, and blast furnaces.
        • Tank Farm Level and Pressure Monitoring: Aggregates multi-channel analog DC voltage loops measuring inventory levels, hydrostatic pressures, and storage tank temperatures across large chemical storage areas.
        • Boiler and Steam System Diagnostics: Monitors auxiliary voltage parameters, structural expansion sensors, and secondary steam line conditions in thermal power utilities.
        • Style-Based Firmware/Hardware Revision: The designation "S2" (Style 2) represents Yokogawa’s internal hardware and component firmware revision. Style 2 features upgraded surface-mount components, optimized noise-filtering circuits, and superior thermal tolerance compared to the older Style 1 (S1) modules.
        • No Field Flash Upgrades: The core logic of the AMM12T S2 is burned directly onto internal EEPROM/ASIC chips at the Yokogawa factory. There is no field-accessible USB, Ethernet, or serial port to flash or update firmware via software.
        • Lifecycle and Migration Support: Because the RIO hardware generation has matured, Yokogawa provides no active software patches or firmware updates. Instead, maintenance firmware compatibility is managed by replacing aging Style 1 cards with Style 2 cards or using Yokogawa's RIO-to-FIO Migration adapters to upgrade to modern FIO card networks (e.g., AAF135 modules) without removing old field cables.
        • I/O Builder Definition: In System View, the technician opens the I/O Module Definition Builder under the specific RIO node (such as an ER1 Nest or AMN unit). The slot housing the card must be explicitly assigned as an "AMM12T" module.
        • Multiplexing Scan Velocity Considerations: Because the 16 channels share an internal sampling mechanism, programmers must account for the multiplexer scan delay. It is not suitable for ultra-fast trip loops (like rotating turbine overspeed protection) but is fully optimized for standard 1-second or 2-second DCS loop updates.
        • Data Function Blocks: The digitized signals are routed from the RIO node bus to the central Field Control Unit (FCU). Programmers map these tags directly into Input Indicator Function Blocks (PVI) or PID Controller Blocks within the CENTUM Control Drawing Builder to execute process control logic.
        Description
        The Yokogawa AMM12T S2 is a high-performance voltage input multiplexer module designed for Yokogawa CENTUM C/S and Process I/O systems. This module receives up to 16 points of DC voltage signals from field devices.

        The Yokogawa AMM12T S2 features an input range of -10 to 10 V DC with 1 MΩ input resistance and allowable input voltage of -30 to 30 V DC. The AMM12T S2 offers accuracy of ±4 mV and is isolated between systems for noise immunity. 

        The Yokogawa AMM12T S2 is installed in the I/O Module Nest (AMN11 or AMN12) and connects via M4 screw terminals. The AMM12T S2 supports input signals specified by software setting.The Yokogawa AMM12T S2 features disconnection detection capability and parallel connection support. The AMM12T S2 has effect of ambient temperature change of ±8 mV per 10°C. 
        Alternative Names
        AMM12T S2 AMM12 S3 AMM22 S3 AMM32 S3 AMM32J S1 AMM42 S3 AMM42 S4 AMM52 S4
        Technical notes
        The Yokogawa AMM12T S2 is a 16-channel DC voltage input multiplexer module (-10 to 10V range) for CENTUM C/S and Process I/O systems. It features 1 MΩ impedance, ±4 mV accuracy, 1-second update, and 500 mA consumption. Installed in AMN11/AMN12 nests, it supports software-configurable inputs and requires dummy covers for vacant slots.
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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 primary function of the AMM12T S2?
        It receives up to 16 DC voltage signals (-10 to 10V) with 1-second update for Yokogawa CENTUM DCS.
        What are the key specifications of the AMM12T S2?
        It features 1 MΩ input resistance, ±4 mV accuracy, 500 mA consumption, and M4 screw terminal connections.
        What nests support the AMM12T S2?
        The AMM12T S2 is installed in AMN11 and AMN12 Analog I/O Module Nests with up to 16 modules.
        Does the AMM12T S2 require dummy covers for empty slots?
        Yes, dummy covers (T9081EF) are required for vacant slots to protect backboard connectors against corrosion.

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