{"product_id":"honeywell-dc-tcf902-51307945-176-input-output-termination-assembly","title":"Honeywell DC-TCF902 51307945-176 Input\/Output Termination Assembly","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell DC-TCF902\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e51307945-176\u003c\/strong\u003e Input\/Output Termination Assembly (IOTA), operates as a dedicated hardware component for routing and terminating analog field wiring signals within Honeywell distributed 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\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC-TCF902\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e51307945-176\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInput\/Output Termination Assembly (IOTA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12-bit signal processing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+\/-0.5% Full Scale (FS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRepeatability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+\/-0.01%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40 to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePassive routing card (module driven)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 in x 4 in x 0.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.23 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control Integration \u0026amp; Channel Isolation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-20 mA HART Loop Protocol Coexistence:\u003c\/strong\u003e The physical circuit layout of the DC-TCF902 is designed to minimize high-frequency interference, preventing digital network communication from corrupting neighboring analog 4-20 mA HART loop wiring routed through the same panel trunking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-to-Channel Isolation Support:\u003c\/strong\u003e The assembly routes electrical connections on separate, isolated board layers, aiding the connected I\/O processor modules in maintaining high channel-to-channel isolation to prevent field ground loop currents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold Junction Compensation (CJC) Support:\u003c\/strong\u003e When paired with thermocouple input modules, the termination board layout supports stable reference junction measurement paths to ensure precise cold junction compensation across its operating temperature range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the active interface modules on the DC-TCF902 be replaced during system operation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. The DC-TCF902 acts as a passive termination base, allowing compatible active I\/O processor cards to be hot-swapped without disconnecting the field wiring termination terminal blocks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the DC-TCF902 require a dedicated external power supply connection?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No. As a passive termination assembly, the DC-TCF902 routes operating power directly from the backplane or the connected I\/O processor module, removing the need for an independent power feed.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Ground Path Integrity:\u003c\/strong\u003e Secure the assembly onto the panel chassis using the integrated metal standoffs. Clean away any non-conductive paint at the mounting contact points to establish a low-impedance ground path.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Cable Shield Termination:\u003c\/strong\u003e Ground the outer shields of all analog field cables at a single common grounding point on the cabinet earth bus to avoid generating parasitic ground loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Cable Segregation:\u003c\/strong\u003e Route low-voltage analog signal cables and communication links through dedicated wire ways, keeping them separated from 120\/240 VAC power cables by at least 300 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew Terminal Torque Limits:\u003c\/strong\u003e Secure all field wires into the termination blocks, tightening to the specified manufacturer torque limits to prevent physical thread damage while ensuring solid electrical contact.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":48164842012862,"sku":"DC-TCF902 51307945-176","price":560.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-07-15_17-24-07_209ed94e-33c8-44d2-9b3c-e911680868c1.png?v=1784107789","url":"https:\/\/www.autooiltech.com\/ar\/products\/honeywell-dc-tcf902-51307945-176-input-output-termination-assembly","provider":"AutoOilTech Limited","version":"1.0","type":"link"}