{"product_id":"amm12t-s2-yokogawa-centum-voltage-input-multiplexer-module","title":"AMM12T-S2 Yokogawa CENTUM Voltage Input Multiplexer Module","description":"\u003ch2\u003eYokogawa AMM12T-S2 Voltage Input Multiplexer Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa AMM12T-S2\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eAMM12T-S2 Voltage Input Multiplexer Module\u003c\/strong\u003e, operates as a dedicated hardware component for sequential signal multiplexing and analog data acquisition within CENTUM VP and CENTUM CS 3000 control system 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\u003eAMM12T-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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e51 x 76 x 229 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e16 channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Signal Types\u003c\/td\u003e\n\u003ctd\u003e4-20 mA current, AC\/DC voltage, RTD, thermocouple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e16-bit A\/D conversion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/- 0.1% of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel and channel-to-system bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Measurement Range\u003c\/td\u003e\n\u003ctd\u003e-200 to +600 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Input Current\u003c\/td\u003e\n\u003ctd\u003e20 mA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Range\u003c\/td\u003e\n\u003ctd\u003e10 to 90% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eRack slot or DIN rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, UL, IEC standards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDCS Process Control and Channel Isolation Features\u003c\/h3\u003e\n\u003cp\u003eThe Yokogawa AMM12T-S2 integrates advanced channel-to-channel isolation architecture to eliminate ground loops and prevent common-mode voltage interference across field instrumentation loops. The onboard multiplexing circuitry sequentially routes up to 16 analog inputs—including 4-20 mA HART loops, DC voltage inputs, RTDs, and thermocouples—into a high-resolution 16-bit A\/D converter core.\u003c\/p\u003e\n\u003cp\u003eAdditionally, internal cold junction compensation (CJC) algorithms ensure high-accuracy thermal readings when processing thermocouple signals directly from field junction boxes. By routing signals through robust galvanic isolation barriers, the module maintains data integrity and shields the internal CENTUM system backplane bus from external electrical surges.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the module handle signal isolation across its 16 input channels?\u003c\/p\u003e\n\u003cp\u003eA: The module utilizes integrated optical and galvanic isolation barriers between individual channels as well as between the input circuitry and the system backplane bus. Consequently, this prevents stray ground loop currents from distorting precision voltage readings.\u003c\/p\u003e\n\u003cp\u003eQ: Can the AMM12T-S2 process thermocouple inputs without external temperature reference units?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The module features integrated cold junction compensation (CJC) logic, which automatically adjusts thermocouple voltage readings to account for ambient temperature shifts at the module terminal interface.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCabinet Mounting and Clearance:\u003c\/strong\u003e Mechanics must mount the module securely into the designated backplane rack slot or standard DIN rail setup. Furthermore, field technicians must preserve a minimum top and bottom clearance of 50 mm to facilitate passive convective cooling across the internal heat sinks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding and Grounding Connections:\u003c\/strong\u003e Installers must terminate all analog field cabling using twisted shielded pairs. Consequently, connect cable drain wires directly to the functional earth (FE) terminal bus bar at a single point to mitigate high-frequency electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Separation and Voltage Isolation:\u003c\/strong\u003e Field engineers must maintain strict physical separation between low-level sensor cabling (thermocouples, RTDs, 4-20 mA loops) and high-voltage AC power lines within the enclosure wire trunks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot-Swapping and Terminal Verification:\u003c\/strong\u003e Before removing or inserting the module during system maintenance, technicians must ensure the terminal block retention screws are fully disengaged and verify that loop power voltages do not exceed the 24 VDC operating boundary.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43913952100442,"sku":"AMM12T S2","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/85._1d75e837-2a2f-4ca2-a2da-00fa56e499bd.jpg?v=1787724351","url":"https:\/\/www.spareoil.com\/products\/amm12t-s2-yokogawa-centum-voltage-input-multiplexer-module","provider":"SpareOil Automation","version":"1.0","type":"link"}