{"product_id":"amm42t-yokogawa-2-wire-transmitter-input-multiplexer-module","title":"AMM42T | Yokogawa | 2-wire Transmitter Input Multiplexer Module","description":"\u003ch2\u003eYokogawa AMM42T 2-wire Transmitter Input Multiplexer Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for multi-channel 4-20 mA transmitter signal acquisition in CENTUM and RIO control networks, the \u003cstrong\u003eYokogawa AMM42T\u003c\/strong\u003e (\u003cstrong\u003eAMM42T\u003c\/strong\u003e 2-wire Transmitter Input Multiplexer Module) provides direct electrical multiplexing and loop power distribution for field-mounted analog transmitters.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAMM42T\u003c\/td\u003e\n\u003ctd\u003eStandard 2-wire transmitter input multiplexer module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAMM42T-S2\u003c\/td\u003e\n\u003ctd\u003eVariant with specified coating or environmental suffix configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003eAMM42T \/ AMM42T-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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e2-wire Transmitter Input Multiplexer Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Systems\u003c\/td\u003e\n\u003ctd\u003eCENTUM-XL, CENTUM CS, RIO Remote I\/O Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Input Current\u003c\/td\u003e\n\u003ctd\u003e40 mA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Power Supply\u003c\/td\u003e\n\u003ctd\u003e23.5-24.5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Output Limit\u003c\/td\u003e\n\u003ctd\u003e60 mA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance\u003c\/td\u003e\n\u003ctd\u003e250 Ohm standard, 70 Ohm with barrier connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Isolation\u003c\/td\u003e\n\u003ctd\u003eNo isolation between system and field, and no channel-to-channel isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Update Period\u003c\/td\u003e\n\u003ctd\u003e1 second\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e4 A maximum at 5.0 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApproximately 0.43 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan \/ Indonesia depending on production batch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA Loop Integration Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe module operates with direct 4-20 mA analog loop handling and internal transmitter excitation suitable for two-wire field devices. Because the AMM42T does not implement galvanic isolation between channels or between field and system sides, external intrinsic safety barriers or isolators are commonly inserted when installed in grounded process environments or hazardous-area loops.\u003c\/p\u003e\n\u003cp\u003eWhen external barriers are connected, the module input resistance can be configured from 250 Ohm to 70 Ohm to maintain loop current compliance and signal stability within the analog acquisition path.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the AMM42T provide channel-to-channel isolation?\u003c\/strong\u003e\u003cbr\u003eA: No. The module uses a non-isolated multiplexed analog input structure. Field grounding strategy and shield termination should therefore be reviewed during installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the module directly power two-wire transmitters?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The internal transmitter supply provides 23.5-24.5 VDC with a maximum output current limit of 60 mA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the AMM42T suitable for use with intrinsic safety barriers?\u003c\/strong\u003e\u003cbr\u003eA: Yes. When connected with external safety barriers or isolators, the input resistance may be adjusted to 70 Ohm as specified for barrier-integrated loop configurations.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoute analog input cables separately from motor feeders, inverter output wiring, and relay switching circuits.\u003c\/li\u003e\n\u003cli\u003eConnect cable shields at a single grounding reference point to reduce common-mode loop interference.\u003c\/li\u003e\n\u003cli\u003eVerify total loop resistance before commissioning when external barriers or isolators are inserted into the 4-20 mA circuit.\u003c\/li\u003e\n\u003cli\u003eConfirm backplane power loading capacity before inserting multiple AMM42T modules into the same node assembly.\u003c\/li\u003e\n\u003cli\u003eDo not connect field devices with independent grounded commons across multiple channels without evaluating ground potential differences.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44150185689176,"sku":"AMM42T","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/AMM42T-3.jpg?v=1779931786","url":"https:\/\/www.industriaxplc.com\/products\/amm42t-yokogawa-2-wire-transmitter-input-multiplexer-module","provider":"IndustriaX Limited","version":"1.0","type":"link"}