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Woodward 9905-268
Product Name: Woodward 9905-268 — 2301A Load Sharing & Speed Control (9905/9907 Series)
Product Introduction: The 9905-268 belongs to the Woodward 2301A 9905/9907 series of electronic controls designed for load sharing and speed control of generators driven by diesel or gasoline engines, or steam or gas turbines. The control is housed in a sheet-metal chassis and consists of a single printed circuit board, providing either isochronous or droop mode control.
Detailed content
Technical Specifications:
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Speed Range (switch-selectable): 500–1500 Hz, 1000–3000 Hz, 2000–6000 Hz, 4000–12,000 Hz
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Speed Sensor: Magnetic pickup, 1.0–30 Vac
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Load Sensing: 90–240 Vac 3Ø, 45–66 Hz; 3Ø current transformer input
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Actuator Output: 7.5 Vdc max for 0 to 214 mA with 35 Ω coil
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Steady-State Speed Band: ±0.25% of rated speed
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Load Sharing: Within ±5% of rated load with speed settings matched
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Rated Speed Setting: 11,450 Hz
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Acceleration Ramp (idle to rated): 0–10 s (switch-activated, closing terminals 19 to 16)
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Actuator Compensation: Time constant 0–500 ms
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Operating Temperature: –40 to +85 °C (–40 to +185 °F)
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Vibration: 4 Gs, 5 to 500 Hz
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Shock: 60 Gs
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Weight: Approx. 1.8 kg (4 lb)
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Enclosure Finish: Gloss powder
Functional Features:
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Switch-selectable speed ranges
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Isochronous load sharing and droop control
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Automatic start-fuel limiting
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Failed speed signal protection
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Idle and rated speed settings with linear ramp
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Compatible with Woodward SPM-A synchronizers and other load control accessories
Application Scenarios: Generator systems requiring load sharing; single prime mover operation; two or more prime movers controlled by Woodward load sharing control systems on an isolated bus; base loading against an infinite bus; parallel operation of diesel, gas, steam, or gas turbine-driven generators.
