{"product_id":"yokogawa-s9548fa-centum-vp-prosafe-rs-replacement-battery-pack","title":"Yokogawa S9548FA CENTUM VP \/ ProSafe-RS Replacement Battery Pack","description":"\u003ch3\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eS9548FA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-reliability lithium thionyl chloride (Li-SOCl2) battery assembly specifically engineered for Yokogawa control systems. Its primary function is to provide critical volatile memory (VRAM) backup for CPU modules and various communication interface cards during main power interruptions. By maintaining the integrity of system parameters, configuration data, and real-time clock settings, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eS9548FA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprevents the loss of essential operational logic, ensuring a rapid and safe system recovery after a power cycle.\u003c\/p\u003e\n\u003cp\u003eThis industrial-grade power cell is housed in a protective casing with a dedicated lead and connector interface, designed to prevent polarity reversal and ensure a secure fit within high-vibration environments. It is a vital maintenance component for ensuring the long-term uptime of distributed control system (DCS) nodes and safety instrumented system (SIS) racks.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCell Chemistry\u003c\/strong\u003e: Lithium Thionyl Chloride (Li-SOCl2)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e: 3.6 VDC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStorage Capacity\u003c\/strong\u003e: High-density energy cell optimized for long-term discharge\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eConnector Type\u003c\/strong\u003e: Proprietary Yokogawa 2-pin polarized plug\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOperational Lifespan\u003c\/strong\u003e: Typically 3 to 5 years (varies based on ambient temperature and power-off frequency)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e: Primarily used in CENTUM VP, CENTUM CS 3000, and ProSafe-RS CPU units\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSelf-Discharge Rate\u003c\/strong\u003e: Extremely low (\u0026lt;1% per year at room temperature)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e: Recommended 0°C to 30°C for maximum shelf life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eMaintenance Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eS9548FA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis deployed across critical control infrastructures to safeguard logic programs in controllers and communication modules. It is an essential spare part for scheduled preventative maintenance cycles in refineries, chemical plants, and power generation facilities where data persistence is mandatory for safety and production continuity.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhen should the S9548FA battery be replaced?\u003c\/strong\u003eStandard industrial protocol recommends replacement every 3 years. However, if the \"BATTERY LOW\" diagnostic LED illuminates on the Yokogawa controller, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eS9548FA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emust be swapped immediately while the system is powered up to avoid data loss.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I replace the battery while the system is running?\u003c\/strong\u003eYes, in most Yokogawa CPU architectures, the battery is designed to be replaced under power to ensure the volatile memory remains energized. Please consult the hardware manual for your specific controller model for safety procedures.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":52421802754357,"sku":"S9548FA","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/S9548FA.jpg?v=1773114349","url":"https:\/\/www.5gplc.com\/products\/yokogawa-s9548fa-centum-vp-prosafe-rs-replacement-battery-pack","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}