{"product_id":"yokogawa-s9841da-centum-vp-analog-input-module","title":"Yokogawa S9841DA CENTUM VP Analog Input Module","description":"\u003ch2\u003eYokogawa S9841DA Analog Input Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for high-precision data acquisition in DCS and PLC networks, the \u003cstrong\u003eYokogawa S9841DA\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eS9841DA\u003c\/strong\u003e Analog Input Module, provides direct physical\/electrical execution of signal conversion from analog field instrumentation to digital control data.\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\u003eS9841DA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eCompact industrial form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-10 deg C to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 V DC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e8 or 16 (system-dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signals\u003c\/td\u003e\n\u003ctd\u003e4-20 mA current \/ 0-10 V voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±0.1% of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDCS Process Control and Signal Isolation\u003c\/h3\u003e\n\u003cp\u003eThe S9841DA module manages field-to-controller signal mapping via independent processing channels. Each channel incorporates channel-to-channel isolation and channel-to-ground galvanic separation to prevent common-mode noise and ground loops from impacting measurements. This module supports the 4-20 mA HART loop protocol when integrated into compatible CENTUM VP or modular I\/O racks, enabling transparent data routing for process instrumentation. The internal conversion circuitry samples analog inputs with a minimum 12-bit resolution, ensuring high-fidelity signal acquisition for control loops. In applications requiring thermocouple or RTD inputs, the module architecture accounts for environmental variance, ensuring stable input readings across the specified operating range.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the S9841DA support field-side loop power for 4-20 mA transmitters?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module is designed to accommodate both loop-powered and externally powered field devices. Ensure the jumper settings or software configuration match the intended power distribution method before connecting field wiring.\u003c\/p\u003e\n\u003cp\u003eQ: Is the channel count configurable via software?\u003c\/p\u003e\n\u003cp\u003eA: No, the channel density is hardware-dependent. The S9841DA is manufactured in specific 8-channel or 16-channel variants. Verify the module part number and physical terminal density prior to system commissioning.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Interface\u003c\/strong\u003e: Install the module on a standardized DIN rail or rack-mount backplane. Ensure the mechanical locking clip is fully engaged to maintain backplane bus connectivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding and Grounding\u003c\/strong\u003e: Terminate all field cable shields to the designated common ground rail at the cabinet entrance. Maintain strict segregation between high-voltage power cabling and analog input signal lines to minimize inductive interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Verification\u003c\/strong\u003e: Conduct a calibration check using a precision source to confirm 4 mA (zero-scale) and 20 mA (full-scale) inputs. Validate that the digital feedback values in the engineering station align with the applied source current.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironment\u003c\/strong\u003e: If operating near the -10 deg C or +55 deg C limits, ensure the cabinet provides adequate passive airflow or climate control to prevent component overheating and maintain measurement linearity.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43576198561882,"sku":"S9841DA","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/177._9b79c1a5-bba7-4981-a7c1-b4ad50b9fc72.jpg?v=1782874942","url":"https:\/\/www.spareoil.com\/products\/yokogawa-s9841da-centum-vp-analog-input-module","provider":"SpareOil Automation","version":"1.0","type":"link"}