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Woodward 9905-269
Product Name: Woodward 9905-269 — 2301A Load Sharing & Speed Control (9905/9907 Series)
Product Introduction: The 9905-269 is a member of the Woodward 2301A 9905/9907 series of electronic controls 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 with a single printed circuit board, providing control in either isochronous or droop mode.
Detailed content
Technical Specifications:
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Power Supply: Low voltage model: 20–40 Vdc; High voltage model: 90–150 Vdc or 88–132 Vac
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Internal Power Consumption: < 15 W
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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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Speed Sensor Input Impedance: 100–300 Ω
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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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Droop: 0 to 10%
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Rated Speed Setting: 11,450 Hz
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Acceleration Ramp: 0–10 s
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Actuator Compensation: 0–500 ms
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Operating Temperature: –40 to +85 °C
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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)
Functional Features:
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Forward or reverse acting configurations available
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Single or tandem actuator compatibility
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Automatic start-fuel limit to reduce emissions and engine wear
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Failed speed signal circuit protection
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Four switch-selectable speed ranges
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Isochronous load sharing compatible with Woodward SPM-A synchronizers
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EU Directive Compliant (low voltage models)
Application Scenarios: Generator systems for load sharing; diesel, gas, gasoline, steam, or gas turbine-driven prime movers; isolated bus parallel operation; infinite bus base loading.
