{"product_id":"honeywell-51400903-100-circuit-board","title":"Honeywell 51400903-100 Circuit Board","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 51400903-100\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e51400903\u003c\/strong\u003e Circuit Board, operates as a dedicated hardware component for internal system signal processing and logic execution within Honeywell TDC 3000 and Process Manager (PM\/APM\/HPM) DCS architectures.\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\u003e51400903-100\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\u003eApprox. 0.8 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePowered via backplane bus (5 VDC \/ 24 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eProcess Manager Circuit Board Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eHoneywell TDC 3000 \/ PM \/ APM \/ HPM Card Cages\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eSingle-slot printed circuit board\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 and Channel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eEngineered for internal signal routing and data bus interfacing within Honeywell process control card cages, the assembly incorporates multi-layer ground planes and isolation barriers. Channel-to-channel isolation on onboard signal distribution paths suppresses common-mode electrical noise and prevents ground potential shifts from distorting low-level analog measurements or 4-20 mA HART loop protocol telemetry across field process interfaces.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What primary role does the 51400903-100 circuit board perform in a Honeywell DCS?\u003c\/p\u003e\n\u003cp\u003eA: The board functions as an internal logic\/interface printed circuit board assembly mounted within TDC 3000 Process Manager card cages to route and process system bus signals.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 51400903-100 circuit board be replaced while the card cage is powered?\u003c\/p\u003e\n\u003cp\u003eA: Board removal or insertion should follow Honeywell system-specific hot-swap protocols; isolating power or placing the node in an offline state is recommended to prevent logic bus errors.\u003c\/p\u003e\n\u003cp\u003eQ: How does the board maintain signal integrity in electrically noisy environments?\u003c\/p\u003e\n\u003cp\u003eA: Onboard filtering, optocouplers, and dedicated ground planes provide galvanic isolation between field-side signals and internal high-speed backplane logic.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHandle the printed circuit board strictly by its front faceplate or frame, utilizing a wrist strap connected to cabinet protective earth (PE) to prevent electrostatic discharge (ESD) damage.\u003c\/li\u003e\n\u003cli\u003eSlide the board smoothly along the card cage guide rails until the rear edge-connector mates firmly with the backplane header.\u003c\/li\u003e\n\u003cli\u003eTighten the top and bottom retaining screws to establish solid mechanical grounding to the rack chassis.\u003c\/li\u003e\n\u003cli\u003eEnsure proper cabinet ventilation and cooling fan operation to maintain ambient rack temperatures within specified limits.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53631670354229,"sku":"51402711-100","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/51400903-100_Cocoai.png?v=1790144267","url":"https:\/\/www.5gplc.com\/products\/honeywell-51400903-100-circuit-board","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}