{"product_id":"yokogawa-aam21-s2-analog-input-module","title":"YOKOGAWA AAM21 S2 Analog Input Module","description":"\u003cp\u003eThe \u003cstrong\u003eYOKOGAWA AAM21 S2\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eAAM21\u003c\/strong\u003e Analog Input Module, operates as a dedicated hardware component for dual-channel isolated analog voltage and current signal acquisition within YOKOGAWA CENTUM control systems.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe catalog designation for the AAM21-S2 defines the base hardware architecture and revision parameters:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Model (AAM21):\u003c\/strong\u003e Analog Input Module architecture for voltage and current signal acquisition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuffix ( S2):\u003c\/strong\u003e Hardware revision 2 designating standard nest mounting and interface parameter set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eAAM21 S2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYOKOGAWA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-10 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC (+\/-10%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e2 channels (isolated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Ranges\u003c\/td\u003e\n\u003ctd\u003e0 to 10 V, +\/-10 V, 4 to 20 mA, 0 to 20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-0.1% of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e16-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSampling Rate\u003c\/td\u003e\n\u003ctd\u003e10 ms\/ch (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e1500 VAC channel-to-channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel-to-Channel Isolation and 4-20 mA HART Loop Signal Acquisition\u003c\/h3\u003e\n\u003cp\u003eThe AAM21-S2 provides 1500 VAC galvanic isolation between individual channels and internal backplane logic to prevent ground loop currents and suppress common-mode electrical noise. Operating at a 16-bit analog-to-digital conversion resolution with a 10 ms per channel sampling cycle, the module converts standard process signals—including 4-20 mA HART loop protocol field devices and +\/-10 V transducers—into digital data frames for DCS backplane transmission.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What input signal ranges can be configured on the AAM21-S2 module?\u003c\/p\u003e\n\u003cp\u003eA: The module accepts 0 to 10 V DC and +\/-10 V DC voltage inputs, as well as 0 to 20 mA DC and 4 to 20 mA DC current inputs across its 2 isolated channels.\u003c\/p\u003e\n\u003cp\u003eQ: What is the dielectric isolation rating between the individual input channels?\u003c\/p\u003e\n\u003cp\u003eA: The module features channel-to-channel galvanic isolation rated at 1500 VAC to prevent cross-talk and signal distortion in noise-prone industrial environments.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eDe-energize rack power prior to mounting or removing the AAM21-S2 module in the system I\/O node slot. Observe electrostatic discharge (ESD) protection procedures, wearing a grounded wrist strap when handling the card. Align the module with guide rails and seat the rear connector firmly into the backplane socket, securing top and bottom retaining screws to establish frame ground continuity. Wire analog inputs using shielded twisted-pair cables, bonding the shield wire to earth ground at a single cabinet termination point to prevent ground loops. Maintain physical separation between low-voltage signal cables and AC power conductors.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":53278258757941,"sku":"AAM21 S2","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/AAM21S2.png?v=1786609207","url":"https:\/\/www.5gplc.com\/products\/yokogawa-aam21-s2-analog-input-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}