Digital guide
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Woodward 9907-977
Product Name: 2301A Electronic Load Sharing and Speed Control (9907 Series)
Product Introduction: The 9907-977 belongs to Woodward’s 2301A series of electronic load sharing and speed controls. These controls are designed for forward- or reverse-acting applications and are used with single or tandem actuators. The high-voltage model is nominally rated 125 Vdc, 100 Vac 50 Hz, or 120 Vac 60 Hz. The low-voltage model is nominally rated 24 Vdc. The voltage of the model is identified on the front of the control.
Detailed content
Technical Specifications:
- Speed Ranges: Switch-selectable: 500–1500 Hz, 1000–3000 Hz, 2000–6000 Hz, or 4000–12,000 Hz
- Power Supply: High-voltage models operate on 88–132 Vac or 90–150 Vdc; Low-voltage models operate on 18–40 Vdc
- Actuator Current: 0–200 mA (on standard 2301A models)
Functional Features: Available for forward- or reverse-acting applications. In reverse-acting systems, the actuator calls for more fuel when the actuator voltage decreases. An optional deceleration ramp is offered; when present, the time to ramp from rated speed to idle speed is approximately 20 seconds.
Application Scenarios: The 2301A controls are used in various speed control applications, allowing for switch-selectable speed ranges.
Structural Features: The speed range is factory set for 2000 Hz to 6000 Hz.
Working Principle: Using the wrong speed range could cause an overspeed with resulting damage to equipment or personal injury or death.
Installation Requirements: Refer to “Speed Ranges” to change speed range and prevent possible overspeed.
Usage Precautions: Use of the wrong speed range could cause an overspeed with resulting damage to equipment or personal injury or death. An overspeed shutdown device must be totally independent of the prime mover control system.
