Digital guide
You are here:
Woodward 9905-041
Product Name: Woodward 9905-041 — 2301A Speed Control (9905/9907 Series)
Product Introduction: The 2301A Speed Control is an electronic control unit that manages the speed or load of diesel or gas engines, or steam or gas turbines. The control is housed in a sheet-metal chassis and consists of a single printed circuit board, with all potentiometers accessible from the front. It provides isochronous mode control, with droop available through an externally wired potentiometer.
Detailed content
Technical Specifications:
-
Power Supply: Low voltage model: 10–40 Vdc, 12 W; High voltage model: 88–120 Vac or 90–150 Vdc, 12 W
-
Speed Sensing: Magnetic pickup, 1.0–30 Vac
-
Speed Range (switch-selectable): 500–1500 Hz, 1000–3000 Hz, 2000–6000 Hz, 4000–12,000 Hz
-
Speed Setting: Terminals 23–24 jumpered, internally adjustable 100 Ω potentiometer allows external 0–10% speed trim
-
Actuator Output: 7.5 Vdc max for 0 to 214 mA with 35 Ω coil
-
Steady-State Speed Band: ±0.25% of rated speed
-
Acceleration Ramp: 0–10 s (switch-activated, closing terminals 19 to 16)
-
Operating Temperature: –40 °C to +85 °C
-
Vibration: 4 Gs, 5 to 500 Hz
-
Shock: 60 Gs
-
Weight: Approx. 1.8 kg (4 lb)
Functional Features:
-
Low- and high-voltage models
-
Idle and rated speed settings
-
Idle to rated speed linear ramp
-
Automatic start-fuel limiting
-
Failed speed sensor protection
-
Four switch-selectable speed ranges
-
Compatible with Woodward SPM-A synchronizers, load sensors, and other power generation controls
-
EU Directive Compliant (low voltage models)
Installation Requirements: Adequate ventilation for cooling, space for servicing, protection from direct exposure to water or condensation, protection from high-voltage/high-current devices or EMI sources, protection from excessive vibration, and an ambient operating temperature range of –40 to +85 °C. The control must not be mounted on the engine.
Application Scenarios: Controls the speed or load of diesel or gas engines, or steam or gas turbines in electric power generation systems.
