{"product_id":"honeywell-mu-gdid12-isolated-digital-input-module","title":"Honeywell MU-GDID12 Isolated Digital Input Module","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 51304640-225\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eMU-GDID12\u003c\/strong\u003e Isolated Digital Input Module, operates as a dedicated hardware component for discrete field signal sensing and voltage-state detection 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\u003eMU-GDID12\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\u003e0.7 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e31.3 cm x 27.8 cm x 3 cm\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\u003e24 VDC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e51304640-225\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e12 Isolated Digital Channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Compatibility\u003c\/td\u003e\n\u003ctd\u003eDry Contact or Voltage Input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunctional Voltage Range\u003c\/td\u003e\n\u003ctd\u003e18 - 30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Architecture\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel and channel-to-system isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel Isolation \u0026amp; 4-20 mA Loop Interfacing\u003c\/h3\u003e\n\u003cp\u003eEquipped with optical and galvanic isolation barriers across all 12 input paths, the unit provides channel-to-channel galvanic isolation that eliminates ground loops between disparate field contacts. The channel-to-system isolation boundary prevents transient electrical spikes on field switches from inducing switching noise or magnetic interference onto adjacent analog backplane buses running 4-20 mA HART loop protocol signals.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the primary benefit of individual channel-to-channel isolation on this digital input card?\u003c\/p\u003e\n\u003cp\u003eA: Channel-to-channel isolation prevents electrical faults or high-voltage surges on a single field input loop from propagating to neighboring channels or disrupting the main logic backplane.\u003c\/p\u003e\n\u003cp\u003eQ: Can the MU-GDID12 accept input signals from both active voltage sources and dry contacts?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the input circuit topology supports both 24 VDC voltage-sourced discrete inputs (18 - 30 VDC operational range) and unpowered dry contact closures.\u003c\/p\u003e\n\u003cp\u003eQ: Is hot-swapping allowed for this module in live Experion or TPS racks?\u003c\/p\u003e\n\u003cp\u003eA: Module removal and insertion must conform to system-specific backplane power guidelines; field terminal power should be isolated before extracting the unit to avoid arc transients.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEnsure input field loop power is disconnected prior to wiring or removing field termination connections.\u003c\/li\u003e\n\u003cli\u003eVerify field signal cabling stays within the 18 - 30 VDC threshold for active voltage-sourced contact inputs.\u003c\/li\u003e\n\u003cli\u003eMaintain strict separation between field digital input wiring trays and high-voltage AC distribution power cables.\u003c\/li\u003e\n\u003cli\u003eGround overall cable shielding at a single dedicated cabinet earth point to eliminate circulating earth loop currents.\u003c\/li\u003e\n\u003cli\u003ePractice ESD control measures, such as grounded wrist straps, during handling and installation into the backplane chassis.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52397887095080,"sku":"MU-GDID12 51304640-225","price":315.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/6266\/2184\/files\/MU-GDID1251304640-1751.png?v=1789628381","url":"https:\/\/www.powerdcs.com\/es\/products\/honeywell-mu-gdid12-isolated-digital-input-module","provider":"Power DCS Parts Limited","version":"1.0","type":"link"}