{"product_id":"peak-150-digital-speed-controller-woodward-9905-860","title":"Peak 150 Digital Speed Controller | Woodward 9905-860","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eWoodward 9905-860\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as a high-performance digital speed control unit within the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePeak 150\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2301D\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eproduct families. This module provides full-authority governing for steam turbines and heavy-duty industrial engines. By executing advanced digital algorithms, the 9905-860 maintains precise RPM stability, manages complex load transients, and enforces critical overspeed protection. It supports both isochronous and droop modes, enabling high-fidelity frequency control for isolated grids or stable load sharing in parallel utility operations. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e, ensuring your mission-critical power generation or mechanical drive systems utilize the latest factory-spec digital processing.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 9905-860 delivers deterministic governing through a versatile, high-speed digital architecture.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eWoodward (Made in USA)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e9905-860\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePeak 150 \/ 2301D Digital Control\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Power\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e18–32 VDC (Nominal 24 VDC)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSpeed Sensor Input\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 Channel (Supports MPU or Proximity Probe)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eControl Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0–10,000 RPM (Fully Programmable)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAnalog Inputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 Configurable Channels (4–20 mA or 1–5 VDC)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAnalog Outputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 Channel (4–20 mA Speed\/Load Feedback)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDiscrete Inputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 Configurable (Start, Stop, Raise\/Lower, etc.)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDiscrete Outputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 Configurable Relays (Alarm, Shutdown, Status)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCommunication\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRS-232 \/ RS-485 Service Ports\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e–40°C to +70°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.2 cm \u003cspan class=\"math-inline\"\u003e$\\times$\u003c\/span\u003e 12.4 cm \u003cspan class=\"math-inline\"\u003e$\\times$\u003c\/span\u003e 12.6 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.25 kg (0.55 lbs)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe Woodward 9905-860 solves modern governing challenges through specialized digital features:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAdaptive Transient Response:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUnlike traditional analog governors, the 9905-860 utilizes programmable PID dynamics. This allows engineers to tune the response specifically for steam turbine inertia, preventing \"hunting\" during sudden load sheds and maintaining frequency within tight tolerances.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGalvanic Isolation Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module features extensive internal galvanic isolation. This shielding prevents electrical noise from marine propulsion systems or large variable frequency drives (VFDs) from corrupting the speed sensing signal, ensuring the CPU operates on clean, validated data.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDual Mode Flexibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe unit seamlessly toggles between Isochronous and Droop modes via discrete inputs. This allows a single turbine to function as the lead frequency reference in a microgrid or as a contributing member of a larger utility parallel without hardware reconfiguration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eComprehensive Service Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBy utilizing the Woodward Watch Window software via the RS-232\/485 service ports, technicians can perform real-time data logging and trend analysis. This facilitates proactive maintenance and rapid troubleshooting of fuel valve or actuator issues before they cause a system trip.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Woodward 9905-860 a direct replacement for older 2301A analog units?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 9905-860 (2301D series) provides a digital upgrade path for many 2301A applications. While it offers superior accuracy and programmable features, you must verify the wiring and actuator compatibility, as the digital platform requires software-based configuration via a PC rather than manual potentiometer adjustments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat speed sensors work with this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 9905-860 accepts signals from standard Magnetic Pickups (MPU) or active Proximity Probes. The digital input circuitry filters high-frequency interference to ensure accurate RPM tracking up to 10,000 Hz.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this unit ship with pre-loaded software?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe supply the unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBrand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efactory hardware. You must configure the specific control parameters (RPM range, PID constants, and I\/O mapping) using Woodward’s Watch Window software to match your specific turbine or engine application.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I monitor the 9905-860 remotely?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. You can use the configurable 4–20 mA analog output to send speed or load feedback to a remote PLC or DCS. Additionally, the RS-485 port facilitates integration into wider industrial networks for digital telemetry and status monitoring.\u003c\/p\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":42870864805978,"sku":"9905-860","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/219.jpg?v=1772077877","url":"https:\/\/www.spareoil.com\/products\/peak-150-digital-speed-controller-woodward-9905-860","provider":"SpareOil Automation","version":"1.0","type":"link"}