{"product_id":"foundation-fieldbus-module-yokogawa-alf111-s50","title":"Foundation Fieldbus Module Yokogawa ALF111-S50","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eALF111-S50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eFoundation Fieldbus (FF) H1 communication interface\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edesigned for Yokogawa Electric Corporation’s\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCENTUM VP\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCS 3000 DCS\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eplatforms.\u003c\/p\u003e\n\u003cp\u003eInstalled in an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eFIO node unit\u003c\/strong\u003e, it enables seamless integration of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efieldbus-compliant devices\u003c\/strong\u003e—including transmitters, actuators, and positioners—into the plant control architecture. The module supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eControl in the Field (CiF)\u003c\/strong\u003e, allowing PID loops to be executed at the device level, which reduces central controller load and improves overall system integrity.\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eS50 suffix\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eindicates\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003econformal coating per ISA G3 standard\u003c\/strong\u003e, providing protection against corrosive gases and harsh industrial environments typical of refineries and chemical plants.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eALF111\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuffix Code\u003c\/td\u003e\n\u003ctd\u003e-S50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocol\u003c\/td\u003e\n\u003ctd\u003eFOUNDATION Fieldbus H1 (31.25 kbps)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Ports\u003c\/td\u003e\n\u003ctd\u003e4 independent H1 segments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Devices per Segment\u003c\/td\u003e\n\u003ctd\u003eUp to 32 (system dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e0.5 A at 5 V DC (internal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Rating\u003c\/td\u003e\n\u003ctd\u003eISA G3 Conformal Coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003e1500 V AC between field signal and system logic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e3.2 cm × 12.4 cm × 13 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e0.35 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eSystem Application\u003c\/h3\u003e\n\u003cp\u003eThe ALF111-S50 is primarily installed in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eFIO node units\u003c\/strong\u003e, communicating with the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eField Control Unit (FCU)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003evia the ESB bus. It facilitates:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eExecution of PID loops directly in field devices\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduced load on central controllers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh system reliability and integrity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eProfessional FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the ALF111-S50 provide power to field devices?\u003c\/strong\u003e\u003cbr\u003eNo. The module functions as a communication master only. A\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eFieldbus power supply\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand proper terminators are required for device power.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this module be used redundantly?\u003c\/strong\u003e\u003cbr\u003eYes. Two ALF111-S50 modules can be installed in a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eredundant FIO node\u003c\/strong\u003e, ensuring continuous communication if one fails.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum cable length per segment?\u003c\/strong\u003e\u003cbr\u003eUp to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1900 meters\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eusing Type A shielded twisted-pair cable, including trunk and spur lengths, per FF H1 standards.\u003c\/p\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51799465754936,"sku":"ALF111-S50","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/ALF111-S502.jpg?v=1771037170","url":"https:\/\/www.automodulexpert.com\/bg\/products\/foundation-fieldbus-module-yokogawa-alf111-s50","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}