{"product_id":"honeywell-tk-idd321-c200-32-point-discrete-input-module","title":"Honeywell TK-IDD321 C200 32-Point Discrete Input Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eTK-IDD321\u003c\/strong\u003e is a high-density hardware component configured as a \u003cstrong\u003e32-Point Discrete Input Module\u003c\/strong\u003e designed for operation within the Honeywell C200 and Experion distributed control system (DCS) platforms. This module monitors digital on\/off states from industrial field equipment, including limit switches, proximity sensors, pushbuttons, and auxiliary contacts, converting them into low-voltage logic thresholds for the central processor. It features 32 distinct input channels organized into two isolated banks of 16 channels sharing a common return path. Engineered to handle a nominal input voltage of 24 VDC, the internal detection circuits comply with IEC Type 1+ input compatibility standards and provide galvanic isolation barriers to prevent field-side electrical surges from migrating into the system backplane logic.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-density 32-point tracking matrix organized in two symmetrical 16-point common banks.\u003c\/li\u003e\n\u003cli\u003eIEC Type 1+ compliance ensuring stable and predictable switching thresholds.\u003c\/li\u003e\n\u003cli\u003eSustained operational reliability at elevated temperatures up to 60 Celsius across all channels.\u003c\/li\u003e\n\u003cli\u003eLow active current requirements combined with protective inrush clamping.\u003c\/li\u003e\n\u003cli\u003eDirect physical integration with standard 36-position connection terminal assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-density discrete sensor and switch array monitoring.\u003c\/li\u003e\n\u003cli\u003eReal-time interlock, safety gate, and pushbutton tracking.\u003c\/li\u003e\n\u003cli\u003eDistributed Control Systems (DCS) sequence-of-events processing.\u003c\/li\u003e\n\u003cli\u003eEquipment status loop telemetry in chemical manufacturing, refinery, and power automation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical 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\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eTK-IDD321\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e32-Point Discrete Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Series\u003c\/td\u003e\n\u003ctd\u003eC200 \/ Experion System Chassis I\/O (CIOM-A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e32 (arranged as 16 points per common bank)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-State Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10-31.2 VDC @ 60 Celsius (all channels active)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-State Current (Minimum)\u003c\/td\u003e\n\u003ctd\u003e2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Voltage (Maximum)\u003c\/td\u003e\n\u003ctd\u003e5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Current (Maximum)\u003c\/td\u003e\n\u003ctd\u003e1.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Compatibility\u003c\/td\u003e\n\u003ctd\u003eIEC Type 1+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort\/Inrush Current\u003c\/td\u003e\n\u003ctd\u003e250 mA peak (decaying to \u0026lt;37% in 22 ms, without activation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e6.1 W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Terminal Blocks\u003c\/td\u003e\n\u003ctd\u003eTC-TBCH (36-position terminal block)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.24 Kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e1.5 Kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUnited States \/ Global Operations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eConnections\/Interfaces\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eConnector Pin\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTC-TBCH Terminal Slot\u003c\/td\u003e\n\u003ctd\u003e36-position terminal block interface mapping for 32 discrete channels shared across 2 return commons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003ch3\u003eGrounding and Shielding\u003c\/h3\u003e\n\u003cp\u003eVerify that the hosting C200 chassis is bonded directly to the plant instrument grounding grid using a heavy-duty, low-impedance copper strap. Ensure that binary sensor signal wiring shields are terminated strictly at external grounding blocks rather than landing on the functional module terminals.\u003c\/p\u003e\n\u003ch3\u003eHandling and ESD Protection\u003c\/h3\u003e\n\u003cp\u003eThe internal solid-state logic microchips are sensitive to static electricity. Technicians must wear an approved, tightly fitted static-dissipative wrist strap connected to a verified earth ground before unpacking the module housing, configuring internal links, or handling the backplane connectors.\u003c\/p\u003e\n\u003ch3\u003eAlignment and Insertion\u003c\/h3\u003e\n\u003cp\u003eAlign the edges of the module's circuit board with the upper and lower plastic tracks of the local rack slot. Slide the unit inward until the rear pins seat completely into the backplane receptacle, and secure the integrated structural fasteners on the front faceplate to defend against continuous industrial panel vibration.\u003c\/p\u003e\n\u003ch3\u003eWiring Configuration\u003c\/h3\u003e\n\u003cp\u003eLand all 24 VDC discrete loop conductors on the compatible TC-TBCH 36-position terminal block. Group field wiring neatly inside separate wire ducts isolated from AC motor feeds, transformer cables, and high-energy inductive switching pathways to eliminate electromagnetic induction on the 24 V inputs.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the primary function of this module in the DCS?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt receives discrete on\/off signals from up to 32 field-side elements and relays their digital state logic to the primary C200 controller.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow are the 32 input channels electrically grouped?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe channels are divided into two distinct groups, containing 16 inputs per common return wire path.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat specific terminal component must be used to link field wires?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis module utilizes the model TC-TBCH 36-position terminal block for physical field loops.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the minimum current required for the channel to register an on-state?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe input circuit requires a minimum on-state current parameter of 2 mA to reliably flip the logic register.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum allowed voltage for an off-state signal condition?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTo guarantee an off-state logic condition, the input potential at the terminal must not exceed 5 V.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this module maintain full performance under high temperature conditions?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, it is fully rated to handle its complete 10-31.2 VDC on-state voltage range up to 60 Celsius with all channels energized.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the net unboxed weight of the individual module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe individual, unboxed hardware assembly has a net physical weight of exactly 0.24 Kg.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the module handle initial power surges during contact closure?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module exhibits a transient short\/inrush current limit of 250 mA peak, which decays to less than 37% within 22 ms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum internal power dissipation of this hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe maximum power dissipation generated by the module under full operating conditions is rated at 6.1 W.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this discrete hardware unit compliant with international sensor interfaces?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the input monitoring profiles align directly with the criteria established under the IEC Type 1+ standard.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52705336525163,"sku":"TK-IDD321","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/TK-IDD321-0cknc1fytmi_6facdc77-92b1-4f36-b055-55f99409406f.jpg?v=1766640827","url":"https:\/\/www.plcprotech.com\/tr\/products\/honeywell-tk-idd321-c200-32-point-discrete-input-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}