{"product_id":"honeywell-mc-tdiy22-digital-input-field-termination-assembly","title":"Honeywell MC-TDIY22 Digital Input Field Termination Assembly","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell MC-TDIY22\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eMC-TDIY22\u003c\/strong\u003e Digital Input Field Termination Assembly, operates as a dedicated hardware component for digital input signal acquisition and field status monitoring within Honeywell process control 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\u003eMC-TDIY22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Experion \/ TDC 3000 FTA DIN-rail mounting profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e32 inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Type\u003c\/td\u003e\n\u003ctd\u003eCompression screw terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance \u0026amp; Coating\u003c\/td\u003e\n\u003ctd\u003eStandard industrial chassis, non-coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy\u003c\/td\u003e\n\u003ctd\u003eNot supported\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 \u0026amp; Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe termination assembly incorporates optical galvanic isolation and channel-to-channel isolation barriers between low-voltage system logic and 24 VDC field-side sensing circuits. Designed to route 32 discrete status signals from field contacts, limit switches, and discrete transmitters, the internal detection pathways suppress electromagnetic interference and prevent field-side ground loops or voltage surges from damaging the primary control processor backplane.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the MC-TDIY22 FTA board be installed or replaced while field wiring loops remain energized?\u003c\/p\u003e\n\u003cp\u003eA: No. Power to the assembly and field contact loops must be isolated prior to hardware servicing to prevent electrical arcing, false status tripping, or permanent trace damage on the terminal board.\u003c\/p\u003e\n\u003cp\u003eQ: How does the module handle signal conditioning across high-density 32-channel digital inputs?\u003c\/p\u003e\n\u003cp\u003eA: The board utilizes dedicated RC filtering and channel-to-channel isolation to eliminate contact bounce noise and prevent electrical cross-talk between adjacent 24 VDC field input lines.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eVerify that all host I\/O communication buses and external 24 VDC field loop power supplies are locked out and de-energized before mounting.\u003c\/li\u003e\n\u003cli\u003eMount the termination assembly securely onto a standard TS35 DIN rail inside a protective cabinet, ensuring the grounding clips seat tightly against the rail.\u003c\/li\u003e\n\u003cli\u003eStrip 32-channel field input conductors to 7 mm and secure them into the compression terminals, torquing screws to 0.5 Nm.\u003c\/li\u003e\n\u003cli\u003eRoute low-voltage 24 VDC digital input wiring through separate wiring channels, away from high-voltage AC power lines to avoid induced noise.\u003c\/li\u003e\n\u003cli\u003eConnect all cable shield drain wires directly to the main cabinet earth bus bar using single-point grounding rules to preserve signal integrity.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":45410739224691,"sku":"MC-TDIY22","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/MC-TDOY22_1ae465f6-3654-4149-a10b-7e3d4a5c7788.png?v=1787810179","url":"https:\/\/www.dcssupplier.com\/products\/honeywell-mc-tdiy22-digital-input-field-termination-assembly","provider":"DcsSupplier Limited","version":"1.0","type":"link"}