{"product_id":"woodward-9905-211-2301a-load-sharing-speed-controller","title":"Woodward 9905-211 2301A Load Sharing Speed Controller","description":"\u003ch3\u003e\u003cspan\u003eOverview\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan\u003eWoodward 9905-211\u003c\/span\u003e is a low-voltage speed control and load-sharing unit from the 2301A series, developed for governing diesel engines, gas engines, and turbine-driven generators. It is widely used in power generation systems requiring accurate speed regulation and stable load distribution.\u003c\/p\u003e\n\u003cp\u003eDesigned for 24 VDC systems, this controller delivers reliable actuator control while maintaining consistent engine performance under varying load conditions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\" width=\"NaN\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eParameter\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e9905-211\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003e2301A Load Sharing \u0026amp; Speed Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e18–40 VDC (24 VDC nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e≤ 15 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeed Input\u003c\/td\u003e\n\u003ctd\u003eMagnetic Pickup (MPU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e500 to 12,000 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e0–200 mA (actuator drive)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eChassis mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eControl Capabilities\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan\u003eDual Operating Modes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe controller supports two standard governing modes:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eIsochronous control maintains constant engine speed regardless of load variation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDroop control enables proportional speed reduction, supporting generator synchronization with grid or parallel units\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis flexibility allows the module to adapt to both standalone and grid-connected applications.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eAccurate Load Distribution\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eWhen interconnected via load-sharing lines, multiple controllers coordinate to balance power output across generators. This prevents uneven loading and eliminates the risk of one machine driving another.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eSystem Protection Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan\u003eSpeed Signal Loss Detection\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe controller continuously monitors the MPU input. In the event of signal failure, the output to the actuator is automatically disabled, preventing uncontrolled fuel delivery and potential overspeed conditions.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eReverse Power Compatibility\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe unit can operate alongside external reverse power protection systems, helping safeguard generators during abnormal load flow or synchronization issues.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eTuning and Adjustment\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan\u003eFront Panel Calibration Controls\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eAccessible potentiometers allow precise system tuning:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eSpeed setting adjustment for rated RPM\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGain and reset parameters for dynamic response optimization\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eActuator matching to align with fuel system characteristics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese adjustments enable stable operation while minimizing oscillation or slow response.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eInstallation and Integration\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan\u003eLow Voltage Operation\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eOptimized for 24 VDC control systems, the unit integrates easily into standard industrial and generator control panels.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eActuator Compatibility\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe 0–200 mA output signal is designed to drive Woodward proportional actuators directly, ensuring smooth fuel control and accurate speed regulation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eApplication Scenarios\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eGenerator set load sharing systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDiesel and gas engine speed control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTurbine governing applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStandby and prime power installations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eParallel power systems with multiple generators\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eFAQ\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan\u003eWhat type of engines can this controller be used with?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eIt is suitable for diesel engines, gas engines, and small to medium gas turbines.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eDoes the unit support parallel generator operation?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eYes, it is specifically designed for load sharing across multiple generator sets.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhat signal is required for speed sensing?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eA magnetic pickup (MPU) signal within the specified frequency range is required.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIs this a standalone controller or part of a system?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eIt can operate independently or as part of a coordinated multi-unit load-sharing system.\u003c\/p\u003e","brand":"WOODWARD","offers":[{"title":"Default Title","offer_id":44092065742947,"sku":"9905-211","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/9905-211.jpg?v=1774936567","url":"https:\/\/precisemodule.com\/products\/woodward-9905-211-2301a-load-sharing-speed-controller","provider":"Precise Module Ltd.","version":"1.0","type":"link"}