{"product_id":"8237-2595-woodward-protech-gii-safety-overspeed-protection-plc","title":"8237-2595 | Woodward ProTech-GII | Safety Overspeed Protection PLC","description":"\u003ch3\u003e\n\u003cstrong\u003eOverview\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e8237-2595\u003c\/strong\u003e ProTech-GII from \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003eWoodward\u003c\/span\u003e is a high-integrity overspeed protection controller engineered for mission-critical rotating equipment. Designed as a dedicated Safety PLC, it employs a Triple Modular Redundancy architecture with 2oo3 voting logic to ensure deterministic overspeed detection and fail-safe shutdown execution under all operating conditions.\u003c\/p\u003e\n\u003cp\u003eThis system is purpose-built for turbine safety applications where rapid response, diagnostic transparency, and SIL-3 compliance are mandatory. Its robust hardware design and environmental protection enable reliable operation in harsh industrial installations.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eSystem Architecture and Safety Design\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e8237-2595\u003c\/strong\u003e utilizes three independent processing channels operating in parallel. Each channel continuously evaluates speed inputs and internal diagnostics, with final trip decisions determined through voted logic. This design eliminates single points of failure and allows continued operation even with one channel faulted, while maintaining certified safety integrity.\u003c\/p\u003e\n\u003cp\u003eIntegrated self-testing, relay voting, and fault annunciation significantly reduce proof-test effort and lifecycle maintenance risk.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eKey Technical Specifications\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e8237-2595\u003c\/strong\u003e overspeed controller provides the following technical capabilities:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\nSafety Integrity Level certified to IEC 61508 SIL-3\n\u003c\/li\u003e\n\u003cli\u003e\nTriple Modular Redundancy with 2-out-of-3 voting logic\n\u003c\/li\u003e\n\u003cli\u003e\nSupported speed sensors: passive MPU or proximity probes\n\u003c\/li\u003e\n\u003cli\u003e\nThree independent speed input channels for redundant measurement\n\u003c\/li\u003e\n\u003cli\u003e\nConfigurable overspeed trip logic and diagnostics\n\u003c\/li\u003e\n\u003cli\u003e\nHigh-speed response suitable for turbine protection loops\n\u003c\/li\u003e\n\u003cli\u003e\nVoted relay outputs for shutdown actuation\n\u003c\/li\u003e\n\u003cli\u003e\nDual power supply options for AC or DC installations\n\u003c\/li\u003e\n\u003cli\u003e\nIntegrated color HMI for configuration and status monitoring\n\u003c\/li\u003e\n\u003cli\u003e\nNative Modbus communication for system integration\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eElectrical and Performance Data\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\nSupply Voltage (AC): 90–264 VAC, 47–63 Hz\n\u003c\/li\u003e\n\u003cli\u003e\nSupply Voltage (DC): 18–32 VDC\n\u003c\/li\u003e\n\u003cli\u003e\nSpeed Measurement Range: 0.5 to 32,000 RPM\n\u003c\/li\u003e\n\u003cli\u003e\nTypical System Response Time: 8–26 milliseconds (configuration dependent)\n\u003c\/li\u003e\n\u003cli\u003e\nDisplay: 4.2-inch high-resolution color LCD\n\u003c\/li\u003e\n\u003cli\u003e\nMounting Method: Bulkhead or panel installation\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eEnvironmental and Compliance Characteristics\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\nSulfur-resistant conformal coating compliant with IEC 721-3-3 Class 3C2\n\u003c\/li\u003e\n\u003cli\u003e\nIngress Protection: IP56 when installed in approved enclosure\n\u003c\/li\u003e\n\u003cli\u003e\nDesigned for continuous operation in high-vibration industrial environments\n\u003c\/li\u003e\n\u003cli\u003e\nCertified for use in safety-related shutdown systems\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e8237-2595\u003c\/strong\u003e ProTech-GII controller is commonly deployed in:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\nGas turbine overspeed shutdown systems\n\u003c\/li\u003e\n\u003cli\u003e\nSteam turbine mechanical protection\n\u003c\/li\u003e\n\u003cli\u003e\nHydro turbine speed supervision\n\u003c\/li\u003e\n\u003cli\u003e\nCompressors, expanders, and other high-speed rotating machinery\n\u003c\/li\u003e\n\u003cli\u003e\nSafety-instrumented systems requiring certified SIL-3 protection\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFAQ\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003ch3\u003e\n\u003cstrong\u003eWhat type of sensors are supported?\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e8237-2595\u003c\/strong\u003e accepts passive magnetic pickup sensors and proximity probes, allowing compatibility with most turbine speed measurement standards.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eCan the system operate with one failed channel?\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eYes. The TMR design allows continued safe operation with one channel faulted while maintaining protective coverage.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eIs the controller suitable for retrofit projects?\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eYes. Its flexible power input, Modbus communication, and bulkhead mounting make it well suited for upgrades and legacy system replacements.\u003c\/p\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":52762081624349,"sku":"8237-2595","price":9.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/5387\/3181\/files\/8237-2595_1000.jpg?v=1787222445","url":"https:\/\/www.6gcontrols.com\/products\/8237-2595-woodward-protech-gii-safety-overspeed-protection-plc","provider":"6G Controls","version":"1.0","type":"link"}