{"product_id":"emerson-kj3246x1-ba1-fieldbus-h1-module","title":"Emerson KJ3246X1-BA1 Fieldbus H1 Module","description":"\u003cp\u003eThe \u003cstrong\u003eEmerson KJ3246X1-BA1\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eKJ3246X1-BA1\u003c\/strong\u003e Fieldbus H1 Module with part number \u003cstrong\u003e12P5539X012\u003c\/strong\u003e, operates as a dedicated hardware component for digital field instrument network interfacing and loop power provisioning within DeltaV automation 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\u003eKJ3246X1-BA1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e12P5539X012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eEmerson\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\u003e0.74 lbs (0.34 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard DeltaV series M system card footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eStandard industrial enclosure environmental parameters apply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocal Bus Power\u003c\/td\u003e\n\u003ctd\u003e12 VDC nominal at 300 mA maximum current draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Circuit Output\u003c\/td\u003e\n\u003ctd\u003e28 to 30 VDC nominal at 400 mA maximum current per port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFOUNDATION Fieldbus Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Integration\u003c\/td\u003e\n\u003ctd\u003eIntegrated physical fieldbus loop power supply circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifecycle Status\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control System Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFOUNDATION Fieldbus \/ Profibus PA Connectivity\u003c\/strong\u003e The hardware establishes direct physical and logical connections to downstream H1 field networks. It executes deterministic token-passing schedules to arbitrate cyclic data blocks from multiple multi-drop transmitters, routing physical instrument variables straight to the primary controller database.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-to-Channel and Loop Power Isolation\u003c\/strong\u003e Each H1 segment terminal incorporates separate, continuous galvanic isolation fields. This physical boundary blocks common-mode noise propagation and voltage surges across networks, ensuring that field loop electrical shorts remain contained without dropping neighboring network paths.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the KJ3246X1-BA1 require separate external bulk power supplies for the H1 field loops?\u003c\/p\u003e\n\u003cp\u003eA: No. The card contains integrated power conditioning circuits that deliver 28 to 30 VDC at up to 400 mA per port straight to the H1 communication wires, eliminating the need for external din-rail mounted fieldbus power supplies.\u003c\/p\u003e\n\u003cp\u003eQ: Can the physical communication lines be plugged in while the local bus power is active?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The hardware configuration handles active card insertion and field terminal removal under power. Staged connection pins control transient inrush currents, allowing hot-swap transitions without introducing data frames or bus errors to active sister cards on the carrier.\u003c\/p\u003e","brand":"Emerson","offers":[{"title":"Default Title","offer_id":45090779529331,"sku":"KJ3246X1-BA1","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-06-11_10-36-03_334698a1-f1f3-415d-97f2-5778e40ca65a.png?v=1781147533","url":"https:\/\/www.dcssupplier.com\/products\/emerson-kj3246x1-ba1-fieldbus-h1-module","provider":"DcsSupplier Limited","version":"1.0","type":"link"}