{"product_id":"amm12-yokogawa-centum-vp-analog-input-multiplexer-module","title":"AMM12 Yokogawa CENTUM VP Analog Input Multiplexer Module","description":"\u003ch2\u003eYokogawa AMM12 CENTUM VP FIO System\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa AMM12\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eAMM12\u003c\/strong\u003e Analog Input Multiplexer Module, operates as a dedicated hardware component for precision analog signal acquisition within CENTUM VP and CS 3000 Distributed Control Systems platforms.\u003c\/p\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\u003eAMM12\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.14 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e2.5 cm x 22.9 cm x 7.6 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eTypical 250 mA at 5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e16 Isolated Analog Inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Support\u003c\/td\u003e\n\u003ctd\u003e4-20 mA DC \/ 1-5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance\u003c\/td\u003e\n\u003ctd\u003e250 Ω (for current signals)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConversion Accuracy\u003c\/td\u003e\n\u003ctd\u003e+-0.1% of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Protection\u003c\/td\u003e\n\u003ctd\u003eGalvanic isolation between field side and system backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstanding Voltage\u003c\/td\u003e\n\u003ctd\u003e1500 V AC between field and system (for 1 minute)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol and Channel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe AMM12 manages 16 isolated analog input channels utilizing a multiplexing architecture designed to protect signal integrity from field-side interference. The internal hardware enforces galvanic isolation rated at 1500 V AC between the field wiring terminals and the system backplane logic. The low-impedance 250 Ω input resistors for 4-20 mA current loops facilitate direct electrical execution of signal digitization without causing loop dropouts. This hardware layout preserves high-frequency components necessary for the 4-20 mA HART loop protocol when interfacing with external digital transmitters, while specialized filter circuits provide channel-to-channel isolation to mitigate common-mode noise during simultaneous multi-channel processing.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the AMM12 handle field wiring faults such as an open or short circuit? A: The module executes real-time diagnostics that continuously monitor loop electrical characteristics. If the signal drops below 4 mA (or crosses predefined voltage thresholds), the module generates open-circuit or short-circuit diagnostic flags which are synchronized immediately with the FIO bus scan cycles.\u003c\/p\u003e\n\u003cp\u003eQ: Is the resolution of the AMM12 fixed, or does it vary based on engineering parameters? A: The internal analog-to-digital converter resolution ranges from 12-bit to 16-bit. This resolution is configuration-dependent and automatically bound by the engineering software settings defined within the host CENTUM VP platform.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Insertion and Backplane Engagement:\u003c\/strong\u003e Align the AMM12 with the designated slot guides on the FIO node unit. Slide the module straight into the rack until the backplane connectors firmly seat. Tighten the module retaining screws to prevent intermittent connectivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Signal Wire Routing:\u003c\/strong\u003e Route the 4-20 mA and 1-5 V DC signal lines through dedicated instrument trays separate from high-voltage AC power cables. Maintain proper separation boundaries to eliminate electromagnetic coupling into the 16 analog channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding Practices:\u003c\/strong\u003e Connect the external cable shields to the dedicated system ground bar within the marshalling cabinet. Ensure that the shields are grounded at a single point only to prevent ground loop currents from degrading the module conversion accuracy.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":42870831546458,"sku":"AMM12","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/129._14015685-7213-4255-915e-50fe6f9f1397.jpg?v=1772587391","url":"https:\/\/www.spareoil.com\/products\/amm12-yokogawa-centum-vp-analog-input-multiplexer-module","provider":"SpareOil Automation","version":"1.0","type":"link"}