9907-252 Woodward

9907-252 Woodward Multi-Function Processor Module

Product  Description：

The 9907-252 belongs to the 2301A "High Voltage" and "Forward Acting" category. It provides the essential functions of governing a prime mover, including speed control, ramp handling, and load sharing. Unlike newer digital systems, the 2301A series relies on proven analog circuitry, which many operators prefer for its simplicity, speed of response, and resistance to software-related failures. This model is housed in a rugged, metal-chassis designed for surface mounting inside a control cabinet.

Product Parameters

• Model Series: 2301A Load Sharing and Speed Control

• Input Power Voltage: 88 to 132 VAC or 90 to 150 VDC (High Voltage version)

• Power Consumption: Approximately 5 Watts

• Speed Range: Low range 500 to 1500 Hz; High range 2000 to 6000 Hz (Selectable via jumpers)

• Magnetic Pickup (MPU) Input: 1 to 30 Vrms

• Actuator Output: 0 to 200 mA (Designed for 0 to 160 mA standard Woodward actuators)

• Load Sharing: 0 to 3 VDC analog signal representing 0 to 100% load

• Operating Temperature: -40°C to +70°C (-40°F to +158°F)

• Enclosure Rating: IP20 (Requires a protective control cabinet)

Product Advantages

One of the primary benefits of the 9907-252 is its Analog Reliability. Because it does not use a microprocessor, it offers near-instantaneous response times to load changes without the "scan time" delays found in digital controllers. The Integrated Load Sharing capability allows for Isochronous load sharing between engines of different sizes, ensuring that each generator carries its fair share of the total load. It also features High Noise Immunity, making it suitable for environments with significant electrical interference from large motors or switchgear. Additionally, the Reverse/Forward Acting Flexibility allows it to be used with a variety of actuator types depending on the safety requirements of the fuel system.

Important Considerations and Precautions

When installing the 9907-252, you must ensure the Power Input matches the high-voltage requirements of this specific part number; applying low-voltage DC (like 24V) will result in the unit failing to power up, while incorrect AC wiring can be hazardous. Shielded Cables are strictly required for the Magnetic Pickup (MPU) and the Actuator output to prevent electromagnetic interference from causing speed instability or "hunting."

It is also vital to note that this is a Legacy Analog Product. While highly reliable, it does not offer the data logging or Ethernet connectivity found in Woodward’s newer digital lines like the 2301E. Before making adjustments to the potentiometers (Gain, Reset, Droop), the user must ensure the engine is in a safe state, as improper tuning can lead to overspeed conditions. Always verify the Overspeed Protection system is independent of the 2301A and fully functional before starting the engine.

Product Applications

The Woodward 9907-252 is primarily used in power generation and industrial engine control:

• Generator Paralleling: Used in power plants where multiple generators are connected to a common bus to provide stable frequency and balanced power distribution.

• Marine Propulsion and Auxiliary Power: Controlling shipboard engines that require synchronized load sharing for propulsion or onboard electrical grids.

• Emergency Standby Power: Ensuring quick start and stable frequency for backup generators in hospitals, data centers, and critical infrastructure.

• Industrial Pump and Compressor Drives: Managing the speed of engines driving large mechanical loads where precise RPM control is necessary for process stability.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

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