{"product_id":"honeywell-dc-tuio31-51307772-176-universal-input-output-module","title":"Honeywell DC-TUIO31 51307772-176 Universal Input Output Module","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell DC-TUIO31 51307772-176\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eDC-TUIO31\u003c\/strong\u003e Universal Input Output Module, operates as a dedicated hardware component for current-loop signal acquisition within Experion Series C platforms. It converts 0-20 mA and 4-20 mA process variable signals from field transmitters into digitized data packets across the I\/O bus backplane.\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\u003eDC-TUIO31 51307772-176\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\u003e0.45 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e22 x 12 x 7.5 cm (shipping envelope)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eStandard industrial operating range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePowered via backplane and loop supply bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Type\u003c\/td\u003e\n\u003ctd\u003eCurrent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003eUp to 32 per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA\/D Resolution\u003c\/td\u003e\n\u003ctd\u003e16 bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Range\u003c\/td\u003e\n\u003ctd\u003e0-20 mA \/ 4-20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e250 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e+33 VDC to -1 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScan Rate\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNMRR\u003c\/td\u003e\n\u003ctd\u003e18 dB at 50 Hz \/ 20 dB at 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrosstalk Rejection\u003c\/td\u003e\n\u003ctd\u003e60 dB (DC to 60 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Filter\u003c\/td\u003e\n\u003ctd\u003eSingle pole, -3 dB at 6 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Features\u003c\/td\u003e\n\u003ctd\u003eShort circuit protection, open wire detection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol Integration\u003c\/h3\u003e\n\u003cp\u003eThe Honeywell DC-TUIO31 module incorporates dedicated signal conditioning circuits designed for seamless 4-20 mA HART loop protocol overlay. Internal modem layers enable bi-directional pass-through of secondary digital process variables and diagnostic status messages from HART-enabled field transmitters without disrupting the primary analog current loop. Each input channel maintains a precision 250 Ohm input impedance to convert 4-20 mA current signals into balanced internal voltages for 16-bit A\/D processing. Built-in single-pole filtering (-3 dB at 6 Hz) alongside channel-to-channel isolation safeguards the system backplane against common-mode noise and ground loop degradation.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the DC-TUIO31 module support hot-swapping during live system operation?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the DC-TUIO31 can be inserted or removed from its dedicated non-redundant IOTA board under power without interrupting backplane communications on neighboring channels.\u003c\/p\u003e\n\u003cp\u003eQ: How does the module indicate an open circuit condition on an active 4-20 mA loop?\u003c\/p\u003e\n\u003cp\u003eA: The onboard diagnostic logic detects loop currents dropping below defined threshold limits, flagging an open wire condition to the Experion controller while driving system alarm bits.\u003c\/p\u003e\n\u003cp\u003eQ: Is external 250 Ohm loop resistor wiring required for HART signal extraction?\u003c\/p\u003e\n\u003cp\u003eA: No, the 250 Ohm termination resistance is internal to the module hardware structure, providing native compatibility with HART digital signal superimposition.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eConfirm that the I\/O Termination Assembly (IOTA) slot card guide rails are aligned and clean prior to seating the module.\u003c\/li\u003e\n\u003cli\u003ePress the DC-TUIO31 module firmly into the non-redundant IOTA header until the locking tabs fully seat.\u003c\/li\u003e\n\u003cli\u003eTorque all IOTA field wiring terminal screws to recommended site specifications, taking care to maintain proper signal polarity.\u003c\/li\u003e\n\u003cli\u003eRoute 4-20 mA loop conductors through dedicated signal conduits, keeping high-voltage power cables physically separated.\u003c\/li\u003e\n\u003cli\u003eConnect cable shielding to the designated single-point ground bar on the IOTA panel layout to prevent circulating ground currents.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52346347618600,"sku":"DC-TUIO31 51307772-176","price":315.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/6266\/2184\/files\/DC-TUIO3151307772-176_Cocoai.png?v=1788849103","url":"https:\/\/www.powerdcs.com\/ar\/products\/honeywell-dc-tuio31-51307772-176-universal-input-output-module","provider":"Power DCS Parts Limited","version":"1.0","type":"link"}