{"product_id":"hd2-dm-a-pepperl-fuchs-fieldconnex-series-diagnostic-module","title":"HD2-DM-A Pepperl+Fuchs FieldConnex Series Diagnostic Module","description":"\u003cp\u003eThe \u003cstrong\u003ePepperl+Fuchs HD2-DM-A\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eHD2-DM\u003c\/strong\u003e Diagnostic Module, operates as a dedicated hardware component for physical layer signal monitoring and fieldbus trunk noise evaluation within FieldConnex Fieldbus networks.\u003c\/p\u003e\n\u003ch3\u003eDesignation Matrix \u0026amp; Nomenclature\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHD2\u003c\/strong\u003e: High-density power hub plug-in module form factor designator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDM\u003c\/strong\u003e: Diagnostic Module hardware classification for fieldbus layer analysis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA\u003c\/strong\u003e: Advanced diagnostic capability revision with real-time signal waveform and noise spectrum evaluation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical \u0026amp; Environmental Attributes\u003c\/h3\u003e\n\u003cfigure\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\u003eHD2-DM-A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePepperl+Fuchs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 100 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e18 mm x 106 mm x 128 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\u003e0.5 W max. (Powered via backplane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMonitored Segments\u003c\/td\u003e\n\u003ctd\u003eUp to 4 Fieldbus segments per motherboard slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eRS-485 \/ Dedicated diagnostic bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFieldbus Protocol\u003c\/td\u003e\n\u003ctd\u003eFOUNDATION Fieldbus H1 \/ PROFIBUS PA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eGalvanic isolation between fieldbus segments and diagnostic bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIntrinsic Safety and Network Barrier Protection\u003c\/h3\u003e\n\u003cp\u003eIntegrated interface circuits preserve intrinsic safety (Ex i) barriers compliance across connected FieldConnex power hubs without injecting signal loading. Housing tolerances enforce DIN-rail mounting stability for the host motherboard, while transient suppressors manage surge voltage protection limits to minimize protocol conversion latencies during high-speed diagnostic telemetry transfer.\u003c\/p\u003e\n\u003ch3\u003eDeliverable Assembly Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Pepperl+Fuchs HD2-DM-A Diagnostic Module\u003c\/li\u003e\n\u003cli\u003e1 x Grounding Strap Clip\u003c\/li\u003e\n\u003cli\u003e1 x Installation Instruction Leaflet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Wiring and Enclosure Setup\u003c\/h3\u003e\n\u003ch4\u003eModule Slot Assembly\u003c\/h4\u003e\n\u003cp\u003eInsert the HD2-DM-A module directly into the designated diagnostic slot of a FieldConnex Power Hub motherboard until the side retention latches click into place.\u003c\/p\u003e\n\u003ch4\u003eDiagnostic Bus Termination\u003c\/h4\u003e\n\u003cp\u003eConnect the diagnostic bus communication wiring to the dedicated RS-485 terminals on the motherboard, maintaining daisy-chain topology across multiple power hub backplanes.\u003c\/p\u003e\n\u003ch4\u003eShielding and Earth Bonding\u003c\/h4\u003e\n\u003cp\u003eBond the FieldConnex motherboard grounding terminal to the cabinet functional earth using a low-impedance conductor to divert high-frequency shield noise away from measurement circuits.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the HD2-DM-A module draw operating power directly from the fieldbus segment signal lines?\u003c\/p\u003e\n\u003cp\u003eNo, operating power is drawn exclusively from the internal backplane power rails of the host FieldConnex motherboard.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan the diagnostic module be inserted or removed while the FieldConnex motherboard is energized?\u003c\/p\u003e\n\u003cp\u003eThe module supports hot-swapping on the motherboard without interrupting fieldbus communication or power delivery to active segments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat physical layer parameters are measured across the connected fieldbus trunks?\u003c\/p\u003e\n\u003cp\u003eIt continuously measures DC segment voltage, fieldbus signal level, low-frequency noise, in-band noise, and jitter for each device.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow does the diagnostic module communicate data to the host system software?\u003c\/p\u003e\n\u003cp\u003eData is transmitted via an isolated RS-485 interface operating under dedicated diagnostic protocols to diagnostic server software.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs a separate HD2-DM-A module required for every fieldbus segment on a power hub?\u003c\/p\u003e\n\u003cp\u003eA single HD2-DM-A module monitors up to 4 fieldbus segments simultaneously when plugged into a 4-segment motherboard slot.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat happens to fieldbus signal transmission if the diagnostic module experiences an internal hardware fault?\u003c\/p\u003e\n\u003cp\u003eInternal isolation circuits guarantee that any diagnostic module failure will not load, corrupt, or disrupt main fieldbus communications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat insulation level is provided between individual fieldbus segments and the diagnostic bus?\u003c\/p\u003e\n\u003cp\u003eGalvanic isolation rated to 500 VAC is maintained between fieldbus segment inputs and the shared diagnostic communication bus.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow should cable shielding be terminated to maintain physical layer measurement accuracy?\u003c\/p\u003e\n\u003cp\u003eConnect the fieldbus cable shields directly to the motherboard shield terminals, ensuring a single ground point to prevent ground loop noise.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pepperl+Fuchs","offers":[{"title":"Default Title","offer_id":47508769603757,"sku":"HD2-DM-A","price":1162.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/hd2-dm-b_1.jpg?v=1789090619","url":"https:\/\/www.maxwellplc.com\/products\/hd2-dm-a-pepperl-fuchs-fieldconnex-series-diagnostic-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}