{"product_id":"woodward-8404-201-proact-analog-rotary-actuator","title":"Woodward 8404-201 ProAct Analog Rotary Actuator","description":"\u003ch2\u003eWoodward 8404-201 ProAct Analog Electric Actuator\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eWoodward 8404-201\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e8290-200\u003c\/strong\u003e ProAct Analog Electric Actuator, operates as a dedicated hardware component for rotary fuel positioning and throttle control within engine and turbine governor platforms. Driven by Limited Angle Torque motor technology and powered by a 24 VDC supply, the unit converts analog current commands directly into precise shaft position over a 75 deg mechanical travel arc. By integrating driver electronics directly into the actuator housing, it eliminates external amplifier modules and stabilizes closed-loop feedback response during step-load demands.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\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\u003e8404-201\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWoodward\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.8 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e290 mm x 190 mm x 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eProAct Analog Electric Actuator with integral driver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActuation Method\u003c\/td\u003e\n\u003ctd\u003eLimited Angle Torque (LAT) electric motor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Travel\u003c\/td\u003e\n\u003ctd\u003e75 deg rotation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Input\u003c\/td\u003e\n\u003ctd\u003eAnalog signal from Woodward controllers (2301E, 2500 series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Rating\u003c\/td\u003e\n\u003ctd\u003eRugged, vibration-resistant industrial enclosure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, UL, RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eActuator Loop Feedback Response \u0026amp; Thermal Dissipation Profiles\u003c\/h3\u003e\n\u003cp\u003eThe integral driver circuitry of the 8404-201 processes incoming analog control signals to enforce real-time position correction via internal closed-loop feedback. Utilizing a Limited Angle Torque (LAT) motor assembly, the actuator executes continuous rapid slewing across its 75 deg rotational path without the backlash or mechanical wear associated with internal gear trains. Heavy current demand during transient positioning drives thermal energy into the internal switching electronics; therefore, the low-profile enclosure incorporates specialized thermal heat sink dissipation paths. Conductive heat transfer through the aluminum housing frame prevents driver thermal throttling and preserves linear torque delivery across the -40 deg C to +85 deg C operational envelope.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the internal driver electronics board calibrate the 75 deg rotary position limits?\u003c\/p\u003e\n\u003cp\u003eA: Internal position sensors feedback shaft location to the driver board, which continuously compares physical angle against incoming analog current setpoints to maintain calibrated mechanical hard-stops.\u003c\/p\u003e\n\u003cp\u003eQ: What power wiring considerations are necessary to supply the integral driver during rapid slewing?\u003c\/p\u003e\n\u003cp\u003eA: Supply wiring must provide low resistance back to the 24 VDC source to support short-duration current surges required by the LAT motor during high-rate directional changes.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 8404-201 be mounted directly to high-vibration engine frames?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the rugged enclosure and encapsulated motor windings are engineered to withstand continuous engine-mounted vibration profiles without mechanical or signal degradation.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the actuator chassis directly to a rigid engine bracket or mounting plate near the fuel control assembly. Align the output shaft linkage meticulously with the butterfly valve or fuel rack lever to ensure the full 75 deg stroke travels without mechanical binding, side loading, or excessive angular misalignment. Perform all mechanical adjustments with power disconnected to verify smooth travel through both mechanical end stops.\u003c\/p\u003e\n\u003cp\u003eRoute analog command signal cables separately from 24 VDC power conductors to minimize electromagnetic interference. Ground cable shields at the governor control side only to avoid creating ground loops. Where conduit connections attach to the enclosure port, follow standard NPT fitting rules by maintaining a minimum of 5 full threads of engagement to preserve enclosure integrity and ingress protection. Ensure adequate ambient clearance around the aluminum housing surfaces to permit unhindered conductive and convective heat transfer.\u003c\/p\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":43907255664739,"sku":"8404-201","price":310.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/51_d5f6a51e-7177-459a-b221-46caf46e5df1.jpg?v=1766470093","url":"https:\/\/www.autocontrolglobal.com\/products\/woodward-8404-201-proact-analog-rotary-actuator","provider":"AutoControl Global","version":"1.0","type":"link"}