{"product_id":"12p3903x012-emerson-deltav-dcs-datasheet-technical-manual","title":"12P3903X012 Emerson DeltaV DCS Datasheet \u0026 Technical Manual","description":"\u003ch2\u003eEmerson 12P3903X012 DeltaV Analog Output Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eEmerson 12P3903X012\u003c\/strong\u003e serves as the primary \u003cstrong\u003e12P3903X012\u003c\/strong\u003e Analog Output Module utilized to execute digital-to-analog signal modulation across Emerson DeltaV DCS platforms. Configured for precise final control element drive, the assembly converts internal digital register values into 8 independent, linearly scaled current loops, transmitting physical command signals directly to field valves, positioners, and modulating actuators.\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\u003e12P3903X012\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\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.18 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e51 mm x 102 mm x 102 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\u003eLocalBus: 12 VDC at 150 mA; Bussed Field Power: 12 VDC at 300 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eEmerson DeltaV Distributed Control System (DCS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e8 isolated analog outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Range\u003c\/td\u003e\n\u003ctd\u003e4-20 mA current output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e16-bit digital-to-analog conversion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Resistance\u003c\/td\u003e\n\u003ctd\u003e0 to 750 Ohm per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003ePlus\/minus 0.1% of span\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Circuit Rating\u003c\/td\u003e\n\u003ctd\u003e24 VDC at 32 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eGalvanic channel-to-channel and channel-to-ground isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShock Resistance\u003c\/td\u003e\n\u003ctd\u003e10 g half-sine wave for 11 ms duration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration Resistance\u003c\/td\u003e\n\u003ctd\u003e1 mm peak-to-peak (2 to 13.2 Hz); 0.7 g (13.2 to 150 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAirborne Contaminants\u003c\/td\u003e\n\u003ctd\u003eISA-S71.04 Class G3 harsh corrosive rating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Class\u003c\/td\u003e\n\u003ctd\u003eIP20 ingress protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHazardous Area Certifications\u003c\/td\u003e\n\u003ctd\u003eCE, UL, ATEX, IECEx (Zone 2 \/ Class I Division 2)\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\u003eThe 12P3903X012 implements a 16-bit digital-to-analog converter architecture across all 8 available channels to assure fine signal granularity over the standard 4-20 mA HART loop protocol current profiles. Structural galvanic channel-to-channel isolation is integrated on every output loop circuit, isolating individual channels from each other and from the internal LocalBus ground plane. This independent circuit configuration limits the path of localized field faults, preventing external short circuits, common-mode voltage spikes, or electromagnetic noise on one field circuit loop from corrupting adjacent channels or destabilizing the control core.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the restrictive load resistance thresholds enforced by this module?\u003c\/p\u003e\n\u003cp\u003eA: Each output channel is rated to drive a total loop loop resistance spanning 0 to 750 Ohm. Exceeding the 750 Ohm load ceiling prevents the 24 VDC internal field circuit supply from generating the full 20 mA maximum output span, causing saturation faults and non-linear command execution.\u003c\/p\u003e\n\u003cp\u003eQ: How does the internal isolation circuit handle field ground potential differences?\u003c\/p\u003e\n\u003cp\u003eA: The integrated channel-to-channel and channel-to-ground galvanic isolation completely severs the direct electrical path between the instrumentation loops and the rack chassis. This design isolates common-mode voltage differences present across distributed field locations, maintaining an overall signal accuracy of plus\/minus 0.1% of span.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarrier Insertion Profile\u003c\/strong\u003e: Align the module side guides with the designated slot positions on the DeltaV carrier card. Press the unit downward perpendicular to the backplane plane until the mechanical retention tabs snap into locked engagement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding Disconnects\u003c\/strong\u003e: Land the shield drain wires of all 4-20 mA current cables at the central enclosure grounding bus bar. Ensure shields remain ungrounded at the field instrument side to prevent the generation of circulating ground currents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Line Routing Isolation\u003c\/strong\u003e: Route all analog output pairs through dedicated low-voltage wiring trays, maintaining structured separation from high-capacity AC supply lines and inductive switching elements to prevent electromagnetic signal coupling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure Environmental Controls\u003c\/strong\u003e: Verify that the continuous internal cabinet ambient environment does not transition outside the -40 to 70 deg C thermal boundaries. Obstruction of natural convection air currents will trigger premature aging of the internal microelectronics.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Emerson","offers":[{"title":"Default Title","offer_id":43840682262627,"sku":"12P3903X012","price":370.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/156_3b87d9ed-1d83-44bb-86f2-4f535e72eb1e.jpg?v=1763364716","url":"https:\/\/www.autocontrolglobal.com\/products\/12p3903x012-emerson-deltav-dcs-datasheet-technical-manual","provider":"AutoControl Global","version":"1.0","type":"link"}