{"product_id":"honeywell-mc-tdia22-digital-input-field-termination-assembly","title":"Honeywell MC-TDIA22 Digital Input Field Termination Assembly","description":"\u003ch2\u003eHoneywell MC-TDIA22 Digital Input Field Termination Assembly\u003c\/h2\u003e\n\u003cp\u003eConfigured for digital signal termination in Honeywell TDC 3000 and Experion PKS High-Performance Process Manager (HPM) I\/O systems, the \u003cstrong\u003eHoneywell MC-TDIA22 51304431-175\u003c\/strong\u003e (\u003cstrong\u003eMC-TDIA22\u003c\/strong\u003e Digital Input Field Termination Assembly) provides direct electrical interfacing between field discrete devices and DCS input processing circuits.\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\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\u003eMC-TDIA22\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\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\u003eSupplied through connected I\/O interface; value not specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e51304431-175\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital Input Field Termination Assembly (FTA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication System\u003c\/td\u003e\n\u003ctd\u003eHoneywell TDC 3000, Experion PKS, High-Performance Process Manager (HPM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e32 digital input channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Type\u003c\/td\u003e\n\u003ctd\u003eDiscrete ON\/OFF, dry contact, solid-state input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Connection\u003c\/td\u003e\n\u003ctd\u003eScrew-clamp terminal blocks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eController Connection\u003c\/td\u003e\n\u003ctd\u003eMulti-pin ribbon cable interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Method\u003c\/td\u003e\n\u003ctd\u003eOptical isolation between field wiring and logic circuitry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Method\u003c\/td\u003e\n\u003ctd\u003eDIN rail or cabinet panel mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Protection\u003c\/td\u003e\n\u003ctd\u003eConformal coating available on standard units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDCS Digital Input Signal Conditioning and Isolation\u003c\/h3\u003e\n\u003cp\u003eThe MC-TDIA22 receives field contact signals and transfers conditioned digital states to Honeywell I\/O processor assemblies. The termination assembly applies signal isolation and electrical conditioning before the controller reads the input status.\u003c\/p\u003e\n\u003cp\u003eFurthermore, the module supports Honeywell DCS architectures that require discrete field termination for process switches, relay contacts, pushbuttons, and proximity-based switching devices. The optical isolation design separates field wiring circuits from internal control electronics and reduces interference from electrical transients.\u003c\/p\u003e\n\u003cp\u003eFor Honeywell process control installations, the termination assembly maintains compatibility with distributed I\/O structures where channel-to-channel signal separation and controlled field wiring termination are required. The design supports discrete signal acquisition rather than analog measurement functions such as 4-20 mA HART or FOUNDATION Fieldbus communication.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the MC-TDIA22 support analog input signals?\u003c\/p\u003e\n\u003cp\u003eA: No. The MC-TDIA22 is a digital input termination assembly designed for discrete ON\/OFF signals from field devices. It does not process analog current or voltage measurement signals.\u003c\/p\u003e\n\u003cp\u003eQ: Can the MC-TDIA22 operate as a standalone I\/O controller?\u003c\/p\u003e\n\u003cp\u003eA: No. The module functions as a field termination interface and requires connection to compatible Honeywell I\/O processor hardware within TDC 3000 or Experion PKS architectures.\u003c\/p\u003e\n\u003cp\u003eQ: Does the MC-TDIA22 provide electrical isolation between field wiring and the DCS electronics?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The assembly uses optical isolation to separate field input circuits from internal logic-side electronics.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the MC-TDIA22 inside an appropriate control cabinet or approved panel enclosure.\u003c\/li\u003e\n\u003cli\u003eVerify terminal identification before connecting field digital input wiring.\u003c\/li\u003e\n\u003cli\u003eSeparate low-level digital signal wiring from high-voltage power cables to reduce electrical interference.\u003c\/li\u003e\n\u003cli\u003eUse shielded wiring when required by the field device installation standard, and connect shields according to the plant grounding specification.\u003c\/li\u003e\n\u003cli\u003eConfirm field device voltage compatibility before applying 24 VDC input signals.\u003c\/li\u003e\n\u003cli\u003eCheck ribbon cable orientation and connector alignment before connecting the termination assembly to the I\/O processor interface.\u003c\/li\u003e\n\u003cli\u003ePerform continuity testing and point-to-point verification after completing field wiring.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":44494962655320,"sku":"MC-TDIA22 51304431-175","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/MC-TDIA22-51304431-175-3_1200x1200_ab651f69-3db1-4d32-ad9a-aee05b779972.jpg?v=1785751449","url":"https:\/\/www.industriaxplc.com\/id\/products\/honeywell-mc-tdia22-digital-input-field-termination-assembly","provider":"IndustriaX Limited","version":"1.0","type":"link"}