{"product_id":"yokogawa-alr121-s53-s1-circuit-board","title":"YOKOGAWA ALR121-S53 S1 Circuit Board","description":"\u003cp\u003eConfigured for serial communication data processing in CENTUM control networks, the \u003cstrong\u003eYOKOGAWA ALR121-S53\u003c\/strong\u003e (\u003cstrong\u003eALR121\u003c\/strong\u003e Circuit Board) provides direct physical signal conversion and protocol handling for field instrumentation.\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\u003eALR121-S53\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\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e7.6 cm x 3 cm x 5.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to 50 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eSerial Communication \/ Data Processing\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 Signal Integrity\u003c\/h3\u003e\n\u003cp\u003eThe ALR121-S53 is engineered to manage high-speed serial data transit while maintaining the signal integrity required for process control environments. The board utilizes advanced filtering stages to support 4-20 mA HART loop protocol connectivity, ensuring that diagnostic data from smart field devices is accurately processed and transmitted to the system controller. By implementing channel-to-channel isolation on the board-level circuitry, the component effectively mitigates the risk of ground loops and common-mode noise, maintaining the high levels of precision required for critical process loops.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can this circuit board be serviced or repaired at the component level?\u003c\/p\u003e\n\u003cp\u003eA: No, field-level repair of circuit board components (such as soldering surface-mount devices) is not supported. The board is designed as a field-replaceable unit (FRU) and must be replaced in its entirety if diagnostic testing indicates a hardware failure.\u003c\/p\u003e\n\u003cp\u003eQ: How should the board be handled to prevent electrostatic discharge (ESD) damage?\u003c\/p\u003e\n\u003cp\u003eA: Always utilize an ESD-safe workstation, including a wrist strap and grounded mat, when handling the circuit board. Avoid touching the gold-plated edge connectors or high-density integrated circuits to prevent transient voltage damage to the board's internal logic.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePower down the corresponding I\/O rack or communication interface unit before attempting to access the interior assembly.\u003c\/li\u003e\n\u003cli\u003eRemove the existing board by gently disengaging the retention clips or securing screws, ensuring the unit is pulled straight out to avoid damaging the backplane pins.\u003c\/li\u003e\n\u003cli\u003eAlign the ALR121-S53 carefully with the slot guide rails; apply firm, uniform pressure to the board edges until the connector is fully seated.\u003c\/li\u003e\n\u003cli\u003eSecure the board using the provided mounting hardware to ensure high-frequency vibration resistance.\u003c\/li\u003e\n\u003cli\u003ePerform a system-level diagnostic check after installation to confirm that the controller recognizes the board and that communication status LEDs indicate a normal link state.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49260481577212,"sku":"ALR121-S53 S1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/ALR121-S53_S1.jpg?v=1783474799","url":"https:\/\/www.electronicplc.com\/products\/yokogawa-alr121-s53-s1-circuit-board","provider":"Electronic PLC","version":"1.0","type":"link"}