{"product_id":"9907-028-woodward-2301a-series-datasheet-technical-manual","title":"9907-028 Woodward 2301A Series Datasheet \u0026 Technical Manual","description":"\u003ch2\u003eWoodward 9907-028 2301A Series Reverse-Acting Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eWoodward 9907-028\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e9907-028\u003c\/strong\u003e Speed Control Module, operates as a dedicated hardware component for prime mover frequency matching and phase locking within Woodward 2301A and Caterpillar 144-5572 network architectures.\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\u003e9907-028 (Caterpillar Cross-Ref: 144-5572)\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\u003e1.71 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e387 mm x 181 mm x 64 mm\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\u003e115\/230 VAC (Field selectable, 50\/60 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Mode\u003c\/td\u003e\n\u003ctd\u003eReverse-Acting (Signal output inversely proportional to speed error)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeed Sensing Input\u003c\/td\u003e\n\u003ctd\u003eMagnetic Pickup (MPU) or Variable Reluctance Sensor (VRS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeed Range\u003c\/td\u003e\n\u003ctd\u003eAdjustable up to 40,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 2 ms for a 90% step change in load or speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Accuracy\u003c\/td\u003e\n\u003ctd\u003e+-0.1% of actual reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Output\u003c\/td\u003e\n\u003ctd\u003e4-20 mA (Isolating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Communication\u003c\/td\u003e\n\u003ctd\u003eRS-485 Modbus protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Rating\u003c\/td\u003e\n\u003ctd\u003eSIL 3 Certified according to IEC 61508\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration Resistance\u003c\/td\u003e\n\u003ctd\u003eRated for 20g (per IEC 60068-2-6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Drives \u0026amp; Governors Properties\u003c\/h3\u003e\n\u003cp\u003eThe Woodward 9907-028 integrates specific internal thermal heat sink dissipation profiles to stabilize the internal reverse-proportional fuel logic circuits during extended high-temperature operations. The control module executes a rapid actuator loop feedback response, resolving 90% step changes in load or speed within a 2 ms window. By adjusting the physical internal circuitry parameters, the controller ensures that the isolated 4-20 mA driver output decreases proportionally as speed error deviates upward, enforcing deterministic speed control behavior over a total speed range extending up to 40,000 RPM via the magnetic pickup interface.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the electrical isolation and safety parameters concerning backplane and switching current?\u003c\/p\u003e\n\u003cp\u003eA: The module maintains distinct galvanic isolation for its 4-20 mA output channel and satisfies IEC 61508 standards for SIL 3 functional safety loops. Current draw varies based on whether the 115 VAC or 230 VAC terminal link is jumped, requiring proper external overcurrent fusing to prevent internal logic disruptions during transient grid shifts.\u003c\/p\u003e\n\u003cp\u003eQ: How is the hardware power configuration shifted between 115 VAC and 230 VAC?\u003c\/p\u003e\n\u003cp\u003eA: Input voltage selection is determined purely via physical terminal jumper wiring combinations on the termination block. The user must configure the terminal links prior to energizing the module to prevent overvoltage damage to the internal transformer circuit.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 9907-028 execute automatic load sharing functions without an external processing unit?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the integrated SPM-A synchronizer core includes active hardware circuits designed to handle frequency matching, phase locking, and proportional load sharing directly when linked in parallel across multiple generator networks.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure Orientation:\u003c\/strong\u003e Mount the unit vertically onto a rigid cabinet structural backplate. Secure the frame using four mounting bolts through the factory-drilled enclosure chassis holes to distribute physical weight and resist the rated 20g vibration limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed Sensing Input Routing:\u003c\/strong\u003e Route the Magnetic Pickup (MPU) or Variable Reluctance Sensor (VRS) coaxial cables using independent, twisted-shielded conductors. Ground the outer braid at the control chassis end only to prevent potential signal attenuation from induced electromagnetic noise fields.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC Voltage Terminal Jumpering:\u003c\/strong\u003e Verify that the field jumper matches the local utility grid potential (115 VAC or 230 VAC) before applying power. Ensure all connections on the main terminal bar are torqued properly to maintain low contact resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Line Clearance:\u003c\/strong\u003e Keep all low-level analog 4-20 mA lines and RS-485 Modbus communication lines at a minimum distance of 30 cm from high-power distribution lines, engine ignition loops, or inductive relay banks.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":42870828007514,"sku":"9907-028","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/179_b6f2cc09-dce5-4640-99ae-d9c6c8dbdf9c.jpg?v=1772759887","url":"https:\/\/www.spareoil.com\/products\/9907-028-woodward-2301a-series-datasheet-technical-manual","provider":"SpareOil Automation","version":"1.0","type":"link"}