{"product_id":"8237-1597-woodward-overspeed-protection-controller","title":"8237-1597 | Woodward | Overspeed Protection Controller","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eWoodward 8237-1597\u003c\/strong\u003e is an \u003cstrong\u003eoverspeed protection controller\u003c\/strong\u003e from the \u003cstrong\u003eProTech GII Series\u003c\/strong\u003e, designed for real-time rotational speed monitoring and emergency safety tripping of rotating machinery. It provides \u003cstrong\u003e2-out-of-3 (2oo3) voting architecture\u003c\/strong\u003e with \u003cstrong\u003edual redundant trip relays\u003c\/strong\u003e, ensuring the highest level of safety integrity for critical prime mover applications. The controller supports \u003cstrong\u003eModbus communication\u003c\/strong\u003e and provides a \u003cstrong\u003e4–20 mA speed output\u003c\/strong\u003e for integration with plant DCS\/SCADA systems.\u003c\/p\u003e\n\n\u003ch3\u003eKey Technical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Overspeed Protection Controller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Woodward ProTech GII\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCore Function:\u003c\/strong\u003e Real-time speed monitoring and overspeed safety trip\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Architecture:\u003c\/strong\u003e 2-out-of-3 (2oo3) voting logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay Outputs:\u003c\/strong\u003e Dual redundant trip relays\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication Protocol:\u003c\/strong\u003e Modbus RTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog Output:\u003c\/strong\u003e 4–20 mA speed readout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication Equipment:\u003c\/strong\u003e Steam turbines, gas turbines, hydro turbines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Panel mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResponse Characteristics:\u003c\/strong\u003e High sensitivity, fast response\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2oo3 Voting Logic:\u003c\/strong\u003e Three independent speed-sensing channels with two-out-of-three voting for fault-tolerant protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Redundant Trip Relays:\u003c\/strong\u003e Two independent relay outputs for critical safety shutdown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModbus Communication:\u003c\/strong\u003e Remote monitoring and configuration via standard industrial protocol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4–20 mA Speed Output:\u003c\/strong\u003e Analog signal for DCS\/SCADA integration and trending\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Sensitivity:\u003c\/strong\u003e Detects overspeed conditions with minimal delay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response:\u003c\/strong\u003e Rapid trip actuation to prevent mechanical damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSteam turbine overspeed protection\u003c\/li\u003e\n\u003cli\u003eGas turbine emergency shutdown systems\u003c\/li\u003e\n\u003cli\u003eHydro turbine safety tripping\u003c\/li\u003e\n\u003cli\u003eCompressor and expander drive protection\u003c\/li\u003e\n\u003cli\u003eCritical rotating machinery safety systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount on panel in turbine control cabinet\u003c\/li\u003e\n\u003cli\u003eConnect 24V DC power supply\u003c\/li\u003e\n\u003cli\u003eInstall three magnetic pickup sensors on turbine shaft\u003c\/li\u003e\n\u003cli\u003eWire MPU signals to controller inputs\u003c\/li\u003e\n\u003cli\u003eConnect dual trip relay outputs to fuel\/steam valve solenoids\u003c\/li\u003e\n\u003cli\u003eWire 4–20 mA output to DCS analog input card\u003c\/li\u003e\n\u003cli\u003eConnect Modbus RS485 communication to plant network\u003c\/li\u003e\n\u003cli\u003eConfigure overspeed setpoints and voting logic via operator interface\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is 2oo3 voting?\u003c\/strong\u003e\u003cbr\u003eA: Two-out-of-three voting means the system requires agreement from at least 2 of the 3 independent speed-sensing channels before initiating a trip, preventing false trips from single sensor failure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the analog output used for?\u003c\/strong\u003e\u003cbr\u003eA: The 4–20 mA output provides real-time speed indication to plant DCS or SCADA systems for monitoring and trending.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can it communicate with my DCS?\u003c\/strong\u003e\u003cbr\u003eA: Yes, via Modbus RTU protocol over RS485.\u003c\/p\u003e\n\n\u003ch3\u003eModel Selection Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e8237-1597 is the \u003cstrong\u003eProTech GII overspeed controller\u003c\/strong\u003e with 2oo3 voting\u003c\/li\u003e\n\u003cli\u003eVerify your turbine requires \u003cstrong\u003e2oo3 architecture\u003c\/strong\u003e vs. simplex or dual redundancy\u003c\/li\u003e\n\u003cli\u003eConfirm Modbus RTU compatibility with your DCS\/SCADA system\u003c\/li\u003e\n\u003cli\u003eCheck magnetic pickup sensor specifications (gap, voltage output, thread size)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":53789788373176,"sku":"8237-1597","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/8237-12462r180.png?v=1784278434","url":"https:\/\/www.globalpetroparts.com\/products\/8237-1597-woodward-overspeed-protection-controller","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}