{"product_id":"9905-387-woodward-proact-driver-datasheet-technical-manual","title":"9905-387 Woodward ProAct Driver Datasheet \u0026 Technical Manual","description":"\u003ch2\u003eWoodward 9905-387 ProAct Governor System\u003c\/h2\u003e\n\u003cp\u003eConfigured for load sharing and speed control in industrial engines and generators, the \u003cstrong\u003eWoodward 9905-387\u003c\/strong\u003e (\u003cstrong\u003e9905-387\u003c\/strong\u003e ProAct Driver Model III) provides direct physical\/electrical execution of actuator position loop command processing and fuel rack regulation.\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\u003e9905-387\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\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.95 kg (2.09 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard enclosure form factor for ProAct Model III series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eInput Current dependent on drive load; nominal execution logic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e18 to 32 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e0 to 3 VDC control signal vector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Range\u003c\/td\u003e\n\u003ctd\u003e0 to 200 mA position loop execution current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessing Core\u003c\/td\u003e\n\u003ctd\u003eIntegrated Digital Signal Processing (DSP) architecture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003eMulti-port network routing interfaces\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 and Thermal Heat Sink Dissipation\u003c\/h3\u003e\n\u003cp\u003eThe 9905-387 micro-processor evaluates actuator loop feedback response using integrated Digital Signal Processing (DSP) matrices to execute steady-state speed control. Real-time driver loop computation continuously regulates the 0 to 200 mA output current channel to position the bi-directional external electric actuator without hydraulic pressure aids. High-load switching phases dissipate systemic heat energy via engineered thermal heat sink dissipation profiles, preventing junction temperature failures while preserving timing constants across the multi-port industrial communication channels.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the internal driver circuit adapt when input power sags below the 18 VDC operating parameter?\u003c\/p\u003e\n\u003cp\u003eA: The onboard voltage diagnostic monitor tracks input line levels. If input voltage drops below 18 VDC, the driver initiates an under-voltage fault routing that restricts output current to the actuator, clamping the 0 to 3 VDC control loop to a low-power standby state until electrical baseline conditions normalize.\u003c\/p\u003e\n\u003cp\u003eQ: What actions prevent high-frequency electrical feedback from shifting the 0 to 200 mA control profile?\u003c\/p\u003e\n\u003cp\u003eA: The module relies on differential analog inputs and isolated trace shielding to suppress high-frequency induction. Internal low-pass filtering limits structural signal noise from altering the digital speed regulation calculations processed within the DSP core.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 9905-387 driver handle direct mounting on high-vibration engine blocks?\u003c\/p\u003e\n\u003cp\u003eA: No. While the remote ProAct actuator is rated for direct engine placement, the 9905-387 driver housing must be fixed to a structural sub-panel or control cabinet backplate to shield the micro-electronics from continuous low-frequency mechanical vibration.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCabinet Mechanical Fastening:\u003c\/strong\u003e Mount the driver housing vertically onto a rigid sub-panel using heavy-gauge hex bolts. Ensure the structural plane provides a vibration-damped foundation to maintain physical alignment of internal connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding Connection:\u003c\/strong\u003e Terminate a heavy-gauge copper earthing conductor from the primary frame ground point directly to the central switchgear ground array to lower electromagnetic stray currents across the communication buses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Cable Shielding Rules:\u003c\/strong\u003e Use twisted, fully shielded pairs for the 0 to 200 mA position command and 0 to 3 VDC output connections. Ground the shield at the driver chassis end only to block structural circulating current loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparation of Power Lines:\u003c\/strong\u003e Keep all 18 to 32 VDC power lines in dedicated wiring paths separate from low-power analog inputs and serial network connections to minimize high-voltage transient coupling.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":43293766352995,"sku":"9905-387","price":260.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/53._297b43b6-a722-4e22-81f1-2ce32df92d07.jpg?v=1780994991","url":"https:\/\/www.autocontrolglobal.com\/products\/9905-387-woodward-proact-driver-datasheet-technical-manual","provider":"AutoControl Global","version":"1.0","type":"link"}