{"product_id":"8408-921-woodward-single-channel-exciter-driver","title":"8408-921 Woodward Single Channel Exciter Driver","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Woodward 8408-921 is a high-performance single-channel exciter designed to drive electromagnetic actuators in industrial engine and turbine systems. It converts low-level control inputs into high-current output required to position fuel racks and throttle valves with precise and rapid response.\u003cbr\u003eThis unit is supplied as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% brand new original equipment\u003c\/strong\u003e, ensuring zero-hour operation and factory-certified calibration for critical governing applications.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\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\u003eDriver Type\u003c\/td\u003e\n\u003ctd\u003eSingle-channel high-current exciter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal\u003c\/td\u003e\n\u003ctd\u003e4–20 mA, 0–5 VDC, PWM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003eHigh-force excitation for ProAct and rotary actuators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC (18–32 VDC range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;10 ms full stroke\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 (-40°F to +158°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"selectTdClass\"\u003eMounting\u003c\/td\u003e\n\u003ctd class=\"selectTdClass\"\u003eChassis or bulkhead mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure\u003c\/td\u003e\n\u003ctd\u003eAnodized aluminum housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFast Response\u003c\/strong\u003e: Sub-10 ms response minimizes throttle lag and improves engine stability during load changes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eActuator Protection\u003c\/strong\u003e: Built-in thermal monitoring prevents overheating and damage to connected actuators.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEMI Isolation\u003c\/strong\u003e: Galvanic isolation reduces interference from ignition systems and high-voltage environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompact Design\u003c\/strong\u003e: Single-channel form factor allows flexible installation in space-constrained control cabinets.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eField Calibration\u003c\/strong\u003e: Onboard potentiometers enable straightforward adjustment without external tools.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it support brushless actuators?\u003c\/strong\u003e\u003cbr\u003eNo. It is designed for electromagnetic and ProAct series actuators requiring high-current DC excitation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if the command signal is lost?\u003c\/strong\u003e\u003cbr\u003eThe unit enters a failsafe mode that de-energizes the actuator, allowing it to return to the shutdown position.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be mounted on the engine?\u003c\/strong\u003e\u003cbr\u003eDirect mounting is possible, but vibration-isolated installation is recommended for longevity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the product condition?\u003c\/strong\u003e\u003cbr\u003eThis unit is supplied as a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% brand new original product\u003c\/strong\u003e, with factory packaging and no prior use.\u003c\/p\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":52022074900792,"sku":"8408-921","price":280.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/9905-068_2301A2.jpg?v=1775009707","url":"https:\/\/www.automodulexpert.com\/products\/8408-921-woodward-single-channel-exciter-driver","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}