{"product_id":"abb-sm811-safety-cpu-module","title":"ABB SM811 Safety CPU Module","description":"\u003ch3\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSM811\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eby ABB is a high-performance safety CPU module engineered for System 800xA and AC 800M controllers. It provides intelligent supervision of the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePM865\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econtroller in SIL1–2 operations and forms a 1oo2 diverse architecture when paired with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePM865\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor SIL3 compliance. Its compact design and advanced features enable reliable operation in safety-critical industrial environments, supporting redundancy, hot-insert, and online upgrades with minimal downtime.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eAttribute\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\u003eProcessor\u003c\/td\u003e\n\u003ctd\u003eMPC862P microprocessor, 96 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory\u003c\/td\u003e\n\u003ctd\u003e32 MB RAM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety I\/O\u003c\/td\u003e\n\u003ctd\u003e3 digital inputs, 2 digital outputs (safety-related only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSynchronization\u003c\/td\u003e\n\u003ctd\u003eDedicated link for active\/redundant module sync; supports hot-insert and online upgrades\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Monitoring\u003c\/td\u003e\n\u003ctd\u003eOver-voltage protection and internal voltage supervision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eRS-485, Modbus RTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e24 V DC ±10%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5 W typical, 7 W maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Input Response Time\u003c\/td\u003e\n\u003ctd\u003e≤10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e1500 V AC (input to output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-25 °C to +70 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 °C to +85 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e5%–95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e110 × 75 × 35 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.25 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eSupervises\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePM865\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econtrollers in SIL1–2 safety operations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnables 1oo2 diverse architecture for SIL3 systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports hot-insert and online upgrades for uninterrupted operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntegrated voltage monitoring enhances system reliability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompact, low-power design suitable for dense control cabinets.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSafety-related digital I\/O ensures fault-tolerant operation (not for process I\/O).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSM811\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis ideal for industrial plants, process automation systems, and safety-critical applications requiring high-availability architectures, such as chemical processing, oil \u0026amp; gas, and power generation. It integrates seamlessly into System 800xA environments for enhanced safety supervision.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can SM811 operate independently without PM865?\u003c\/strong\u003e\u003cbr\u003eA: No, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSM811\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis designed to supervise\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePM865\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econtrollers and form SIL architectures; it does not perform standard process control alone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it support online firmware upgrades?\u003c\/strong\u003e\u003cbr\u003eA: Yes, the module supports hot-insert and online firmware updates, minimizing downtime.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What safety integrity levels are supported?\u003c\/strong\u003e\u003cbr\u003eA: SIL1–2 for standalone supervision; SIL3 when paired in a 1oo2 diverse architecture with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePM865\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are the I\/O channels usable for process signals?\u003c\/strong\u003e\u003cbr\u003eA: No, all digital inputs and outputs are strictly safety-related.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":43008808616026,"sku":"SM811","price":258.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/SM8112.jpg?v=1772694352","url":"https:\/\/www.plcmasters.com\/fa\/products\/abb-sm811-safety-cpu-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}