{"product_id":"woodward-9907-186-2301a-gs10-series-datasheet-technical-manual","title":"Woodward 9907-186 2301A GS10 Series Datasheet \u0026 Technical Manual","description":"\u003ch2\u003eWoodward 9907-186 GS10 \/ 2301A Load Sharing \u0026amp; Speed Control\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eWoodward 9907-186\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e9907-186\u003c\/strong\u003e Reverse-Acting Speed Control, operates as a dedicated hardware component for deterministic speed regulation and parallel load distribution within GS10 \/ 2301A Load Sharing \u0026amp; Speed Control platforms.\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\u003e9907-186\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\u003e2.16 kg (4.76 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e22.2 cm x 8.0 cm x 26.6 cm\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\u003e220 VAC Nominal (Backplane or dedicated terminal block driven)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Logic\u003c\/td\u003e\n\u003ctd\u003eReverse-Acting (Inverse Proportional Output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeed Frequency Range\u003c\/td\u003e\n\u003ctd\u003eUp to 11,450 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSteady-State Band\u003c\/td\u003e\n\u003ctd\u003e+-0.25% of rated speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Modes\u003c\/td\u003e\n\u003ctd\u003eIsochronous, Droop, and Load Sharing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Adjustments\u003c\/td\u003e\n\u003ctd\u003eOn-board potentiometers for Gain, Stability, Droop, and Speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, UL, and EU Directive Compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Drive \u0026amp; Governor Feedback Logic\u003c\/h3\u003e\n\u003cp\u003eThe Woodward 9907-186 implements reverse-proportional output logic to execute fuel reduction routines whenever speed deviation metrics expand. The internal circuit architecture maintains a steady-state band of +-0.25% of rated speed, utilizing harmonic distortion suppression parameters to clear inductive magnetic pickup ripples across an input range reaching up to 11,450 Hz. This reverse-acting execution pattern matches unique actuator loop feedback response schedules, driving actuator current downward during an overspeed tracking event to enforce a default mechanical safe-state.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the reverse-acting logic profile differ from a standard forward-acting governor card during a total control signal failure? A: In a reverse-acting architecture, the module decreases its output current to the actuator as the speed error rises above the setpoint loop. If a catastrophic control signal loss occurs, the output drops to its baseline value, which forces the linked actuator into a minimum fuel or shutdown position to protect the prime mover.\u003c\/p\u003e\n\u003cp\u003eQ: What calibration steps apply to the manual tuning interface when balancing parallel isochronous load sharing runs? A: Initial loop balancing requires physical manipulation of the front-panel potentiometers. Technicians must adjust the Gain and Stability pots to stabilize single-unit dynamics under load, then adjust the Droop and Speed parameters to align the parallel proportional load lines across all linked generators.\u003c\/p\u003e\n\u003cp\u003eQ: What precautions apply when routing high-frequency speed signal lines into the module MPU terminal blocks? A: The high-frequency speed input channel accepts inputs up to 11,450 Hz and is highly sensitive to external electrical interference. To prevent signal jitter from corrupting the steady-state tracking band, the sensor line must use a continuous twisted, shielded pair with its drain wire tied exclusively to the cabinet instrumentation earth.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Mechanical Attachment:\u003c\/strong\u003e Fasten the assembly onto the interior backplate of the control panel layout using the integrated corner mounting holes. Ensure the installation location satisfies the -40 to +85 deg C thermal design boundary to avoid components overheating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC Input Supply Isolation:\u003c\/strong\u003e Route the high-voltage 220 VAC operational power lines through a separate physical conduit path. Keep these utility conductors isolated from low-voltage signal cabling, such as the load sharing line links or the MPU input pairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad Sharing Bus Interconnection:\u003c\/strong\u003e Wire all parallel generator control units together via the designated proportional load sharing lines. Use shielded twisted-pair cables for this multi-unit network, ensuring that the shield braid is grounded at only one single master point to stop ground loop propagation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePotentiometer Adjustments:\u003c\/strong\u003e Use insulated tuning drivers when adjusting the onboard Gain, Stability, Droop, and Speed settings. Applying excessive torque to these manual rotary potentiometers will cause permanent damage to the underlying circuit board contacts.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":42870826958938,"sku":"9907-186","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/186_8128f01f-72b9-4ca4-90d7-fd90accf3044.jpg?v=1772762655","url":"https:\/\/www.spareoil.com\/products\/woodward-9907-186-2301a-gs10-series-datasheet-technical-manual","provider":"SpareOil Automation","version":"1.0","type":"link"}