{"product_id":"yokogawa-alr121-s53-s1-serial-communication-module","title":"Yokogawa ALR121-S53 S1 Serial Communication Module","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eALR121-S53 S1\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance serial communication interface module designed for Yokogawa CENTUM VP and Yokogawa CENTUM CS 3000 Field Control Stations (FCS). It provides a reliable communication link between the controller and external subsystems such as FA-M3 PLCs, power meters, motor protection relays, and other intelligent field devices.\u003c\/p\u003e\n\u003cp\u003eThe module supports both\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRS-422 and RS-485\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ephysical layers (software selectable), enabling flexible network architectures from point-to-point links to multi-drop bus configurations with up to 31 devices per port.\u003c\/p\u003e\n\u003cp\u003eDesigned for industrial environments, the ALR121-S53 S1 uses\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003easynchronous half-duplex communication\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith start-stop synchronization. Built-in galvanic isolation protects the internal system bus from field-side electrical disturbances and ground loops. When installed in redundant node units, the module supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehot-swapping\u003c\/strong\u003e, allowing maintenance without process interruption.\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\u003eParameter\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\u003c\/td\u003e\n\u003ctd\u003eALR121-S53 S1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Systems\u003c\/td\u003e\n\u003ctd\u003eCENTUM VP \/ CENTUM CS 3000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003eDual-port RS-422 \/ RS-485 (software selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Mode\u003c\/td\u003e\n\u003ctd\u003eAsynchronous, Half-duplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Cable Length\u003c\/td\u003e\n\u003ctd\u003e1200 m (total segment length)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Format\u003c\/td\u003e\n\u003ctd\u003eASCII or Binary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNode Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 31 devices per port (RS-485)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Current Consumption\u003c\/td\u003e\n\u003ctd\u003e0.5 A at 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Node Units\u003c\/td\u003e\n\u003ctd\u003eAFV30, AFV40, ANB10, ANB11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eThe ALR121-S53 S1 is commonly used for integrating third-party or subsystem devices into the CENTUM control architecture, including:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eVariable Frequency Drives (VFDs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePower meters and energy monitoring devices\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMotor protection relays\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntelligent trip units\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eModbus-RTU compatible field instruments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is particularly suitable for water treatment plants, power distribution systems, and industrial process facilities requiring stable serial communication over long distances.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Does this module support redundancy?\u003c\/strong\u003e\u003cbr\u003eYes. It can be installed in redundant node units to provide seamless communication failover.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can it support Modbus communication?\u003c\/strong\u003e\u003cbr\u003eThe hardware supports RS-422\/485 physical layers. Modbus functionality depends on the appropriate FCS software configuration and licensing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: What does the S53 suffix indicate?\u003c\/strong\u003e\u003cbr\u003eThe S53 suffix typically refers to standard specifications for CENTUM VP systems, often including conformal coating options for enhanced environmental resistance.\u003c\/p\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51851043668280,"sku":"ALR121-S53 S1","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/ALR121-S53_S11.jpg?v=1772590989","url":"https:\/\/www.automodulexpert.com\/lv\/products\/yokogawa-alr121-s53-s1-serial-communication-module","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}