{"product_id":"honeywell-tc-idd321-experion-ls-i-o-24-vdc-digital-input-module","title":"Honeywell TC-IDD321 Experion LS I\/O 24 VDC Digital Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Honeywell TC-IDD321 serves as a high-density discrete interface within the Experion LS control system architecture. This module provides \u003cstrong\u003e32 digital input channels\u003c\/strong\u003e configured in two isolated groups of 16 points per common, allowing clean interfacing with dry contacts, proximity sensors, and electronic switches. Operating with a \u003cstrong\u003enominal input voltage of 24 VDC\u003c\/strong\u003e, it integrates \u003cstrong\u003eIEC Type 1+ input compatibility\u003c\/strong\u003e to secure clear signaling thresholds and superior electrical noise rejection within standard Chassis Input\/Output Modules Series A (CIOM-A) backplane platforms.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-density 32-point architecture optimizes backplane slot efficiency.\u003c\/li\u003e\n  \u003cli\u003eIsolated common groups (16 points per common) mitigate group-to-group loop cross-talk.\u003c\/li\u003e\n  \u003cli\u003eIEC Type 1+ compliant circuit characteristics provide precise state detection thresholds.\u003c\/li\u003e\n  \u003cli\u003eGalvanic isolation verified at 1500 V DC ensures deep backplane and system processor protection.\u003c\/li\u003e\n  \u003cli\u003eRemovable connection interface using dedicated 36-position terminal blocks simplifies wiring maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIndustrial Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDiscrete valve position feedback tracking in petroleum and chemical refining lines.\u003c\/li\u003e\n  \u003cli\u003eField contact and circuit breaker position sensing in power distribution panels.\u003c\/li\u003e\n  \u003cli\u003eSafety interlock switch and alarm point monitoring in water and wastewater infrastructure.\u003c\/li\u003e\n  \u003cli\u003eSequence tracking and automated limit switch detection on high-throughput assembly systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n  \u003ctable style=\"width: 100%; border-collapse: collapse; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d;\"\u003e\n        \u003cth style=\"padding: 12px; color: #1a365d;\"\u003eSpecification Parameter\u003c\/th\u003e\n        \u003cth style=\"padding: 12px; color: #1a365d;\"\u003eTechnical Value \/ Rating\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003eHoneywell\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003eTC-IDD321\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eSystem Series\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003eExperion LS I\/O\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eNumber of Inputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e32 (16 points per common)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eNominal Input Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e24 VDC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eMinimum On-State Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e2 mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eMaximum Off-State Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e5 V\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eMaximum Off-State Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e1.5 mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003ePower Dissipation\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e6.1 W max\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eInput Compatibility\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003eIEC Type 1+\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eIsolation Voltage (Channel to Channel)\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e100 percent tested at 1500 V DC for 1 second\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eIsolation Voltage (User to System)\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e100 percent tested by 1500 for 1 second\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eConnection Terminal Blocks\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003eTC-TBNH, 36-position terminal block\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003eUnited States\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e2 Kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #2d3748;\"\u003e\n        \u003ctd style=\"padding: 12px; font-weight: bold; color: #2d3748;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px;\"\u003e18.5 x 15.0 x 6.2 cm\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eField Installation and Commissioning Guidelines\u003c\/h3\u003e\n\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #cc0000; padding: 16px; margin-bottom: 20px;\"\u003e\n  \u003cstrong style=\"color: #cc0000;\"\u003eCRITICAL WARNING: DE-ENERGIZATION PROTOCOL REQUIRED\u003c\/strong\u003e\n  \u003cp style=\"color: #cc0000; margin: 8px 0 0 0;\"\u003eIsolate and switch off all primary field instrumentation loops and system chassis power prior to executing module alignment, mechanical insertion, or terminal block coupling. Performing hot insertion or manual wire termination on energized components risks generating electrical arcs, damaging backplane surface traces, or causing unpredictable system process execution.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 16px;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 12px;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 24px; min-height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px;\"\u003e1\u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003cstrong\u003eChassis Slot Validation:\u003c\/strong\u003e Confirm the target physical slot within the Series A chassis is clean, unbent, and properly aligned. Ensure chassis frame grounding links comply with site automation layouts.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 12px;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 24px; min-height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px;\"\u003e2\u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003cstrong\u003eMechanical Card Seating:\u003c\/strong\u003e Match the internal card guide edges with the upper and lower chassis plastic guides. Press the module smoothly backward until the rear backplane seating connectors lock completely into the rigid passive backplane.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 12px;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 24px; min-height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px;\"\u003e3\u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003cstrong\u003eTerminal Block Interfacing:\u003c\/strong\u003e Wire discrete contact sensing pairs to the TC-TBNH 36-position removable block using standard field wiring configurations. Secure the terminal assembly directly over the front card layer.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 24px; min-height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px;\"\u003e4\u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003cstrong\u003eSignal Loop Auditing:\u003c\/strong\u003e Apply the nominal 24 VDC source to the discrete field devices. Audit electrical loop current to guarantee active on-state channels pull at least 2 mA through the module sensing logic.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52705321419115,"sku":"TC-IDD321","price":3000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/TC-idD321-u2wntjfob3i_4ffb419f-cc27-44d0-9f8e-f4ea2bdcd3f6.jpg?v=1766639776","url":"https:\/\/www.plcprotech.com\/products\/honeywell-tc-idd321-experion-ls-i-o-24-vdc-digital-input-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}