{"product_id":"tc-idk161-honeywell-ac-digital-input-module","title":"TC-IDK161 | Honeywell | AC Digital Input Module","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell TC-IDK161\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eTC-IDK161\u003c\/strong\u003e AC Digital Input Module, operates as a dedicated hardware component for 120 VAC discrete signal detection and field-to-logic isolation within Honeywell DCS 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\u003eTC-IDK161\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\u003e0.25 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e44.5 x 120 x 100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePower Dissipation: 4.9 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e79 to 132 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLine Frequency\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e5 mA @ 79 V, 15 mA @ 132 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Voltage (Max)\u003c\/td\u003e\n\u003ctd\u003e20 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Current (Max)\u003c\/td\u003e\n\u003ctd\u003e2.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e11 kohm @ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e2546 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Limits\u003c\/td\u003e\n\u003ctd\u003e5% to 95% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel-to-Channel Isolation and Loop Integrity\u003c\/h3\u003e\n\u003cp\u003eThe TC-IDK161 features robust optical and electrical isolation barriers rated up to 2546 VDC between field input channels and backplane processing logic. This channel-to-channel isolation prevents high-voltage AC common-mode spikes, ground loops, and field wiring surges from damaging internal controller backplanes. By isolating AC field contacts from system logic, the module eliminates electromagnetic cross-talk that could otherwise couple into sensitive analog measurement sub-racks running 4-20 mA HART loop communication protocols.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the off-state threshold limits for the TC-IDK161 input channels?\u003c\/p\u003e\n\u003cp\u003eA: An input channel registers an off-state logic condition when the incoming voltage drops below 20 VAC or when the leakage current does not exceed 2.5 mA.\u003c\/p\u003e\n\u003cp\u003eQ: How is galvanic isolation structured across the TC-IDK161 module circuit?\u003c\/p\u003e\n\u003cp\u003eA: The module incorporates a galvanic isolation barrier rated at 2546 VDC, separating 120 VAC field-side terminal circuitry from low-voltage backplane communication logic.\u003c\/p\u003e\n\u003cp\u003eQ: Can the TC-IDK161 process DC discrete inputs?\u003c\/p\u003e\n\u003cp\u003eA: No. The channel input network is engineered specifically for 50\/60 Hz AC signals across the 79 to 132 VAC operational range with an nominal input impedance of 11 kohm at 60 Hz.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIsolate all external 120 VAC power sources feeding field dry contacts prior to connecting or disconnecting wiring harnesses from the module terminal block.\u003c\/li\u003e\n\u003cli\u003eMaintain clear physical separation inside cabinet raceways between high-voltage 120 VAC digital input lines and low-level analog or communication cables.\u003c\/li\u003e\n\u003cli\u003eAlign the module card edge carefully with the rack guide rails and push firmly to ensure positive backplane connector mating and earth ground continuity.\u003c\/li\u003e\n\u003cli\u003eConnect field cable shields directly to the dedicated single-point ground bar inside the enclosure to mitigate high-frequency electrical noise.\u003c\/li\u003e\n\u003cli\u003eVerify cabinet convection airflow is unobstructed to keep module power dissipation (4.9 W max) from elevating enclosure ambient temperature above +70 deg C.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52368510452008,"sku":"TC-IDK161","price":315.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/6266\/2184\/files\/TC-IDJ1612_Cocoai_cd151d25-e716-48f0-82c2-9d1621576435.png?v=1789112673","url":"https:\/\/www.powerdcs.com\/es\/products\/tc-idk161-honeywell-ac-digital-input-module","provider":"Power DCS Parts Limited","version":"1.0","type":"link"}