WOODWARD 9907-1290

الوصف

The Woodward 9907-1290 is a specific part number for a ProAct™ Model II Digital Speed Control with a High Output Sensor Circuit. This electronic control unit is designed for precise speed regulation of engines and turbines in various industrial applications.

WOODWARD 9907-1290: ProAct™ Model II Digital Speed Control (with High Output Sensor Circuit)

The Woodward 9907-1290 is a core component within the ProAct™ Digital Speed Control System. It functions as a sophisticated speed controller, actively managing the speed of a prime mover by processing speed sensor inputs and generating commands for an associated actuator.

Product Overview

• Product Type: Digital Speed Control System / Speed Controller
• Manufacturer: Woodward
• Series: ProAct™ Model II Digital Speed Control
• Function: Electronically monitors and precisely controls the speed of engines (diesel, gas, or dual-fuel) and turbines by providing control signals to a compatible actuator (which adjusts fuel or air).
• Key Feature: Includes a High Output Sensor Circuit, indicating its capability to effectively process signals from speed sensors that produce a higher voltage output, contributing to robust and reliable operation.
• Integration: It typically works as part of a complete control loop, receiving speed feedback from a magnetic pickup unit (MPU) and sending a command signal to a Woodward ProAct actuator (e.g., ProAct I or ProAct II series).

Detailed Description

The ProAct™ Digital Speed Control Systems are highly regarded for their advanced microprocessor-based control, offering exceptional precision, rapid response, and durability in challenging industrial environments. The 9907-1290 is a testament to this, serving as the intelligent core for critical speed governing tasks.

Key characteristics of the 9907-1290 include:

• Digital Control: It employs advanced digital algorithms to continuously compare the actual prime mover speed (sensed by the MPU) to a user-defined speed setpoint. Based on this comparison, it calculates and outputs the precise control signal required to maintain the desired speed.
• High Output Sensor Circuit: This feature signifies an enhanced input stage, allowing the unit to handle stronger signals from speed sensors more effectively. This can be particularly advantageous in electrically noisy environments or with certain types of MPUs.
• Precise Speed Regulation: This controller is vital for applications that demand extremely stable speed, such as generator sets operating at a constant electrical frequency, or industrial machinery requiring consistent rotational speeds for process optimization.
• Programmability: ProAct controllers are highly configurable using Woodward’s PC-based service tools (e.g., ProAct Speed Control Service Tool). Users can adjust a wide range of parameters, including idle and rated speed settings, acceleration/deceleration ramp rates, various fuel limiting curves (e.g., start fuel, maximum fuel, torque limit), and diagnostic thresholds.
• Comprehensive Diagnostics: The unit often incorporates robust on-board diagnostics that can detect and report fault conditions, facilitating quicker troubleshooting and reducing system downtime.
• Robust Construction: Engineered to withstand the harsh conditions commonly found in engine rooms and industrial settings, including significant vibrations, extreme temperatures, and electromagnetic interference, ensuring long-term reliability.
• System Component: It’s crucial to understand that the 9907-1290 is the electronic control module itself. It sends the command signal to a compatible Woodward ProAct electric actuator, which then physically manipulates the engine’s fuel or air control mechanisms.
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Applications

The Woodward 9907-1290 (as part of the ProAct Model II system) is widely used in:

• Power Generation: For precise speed and load control of diesel, gas, or dual-fuel engine-driven generator sets, ensuring stable electrical frequency and efficient power production.
• Industrial Engine Control: For a broad range of industrial engines driving equipment like pumps, compressors, fans, and other machinery where accurate and responsive speed control is paramount.
• Marine Propulsion: In various marine engine applications for main engine speed management.
• Excavator Engine Control: Some sources specifically mention its use in excavator engines, highlighting its suitability for heavy machinery applications where robust and reliable engine control is essential.

Related Products/Series

The Woodward 9907-series generally encompasses various electronic control modules, while the 8400-series often refers to related ProAct components. Other related part numbers and components in the ProAct ecosystem include:

• 9907-1289: ProAct Model I Speed Control with High Output Sensor Circuit. The 9907-1290 is typically considered the Model II version, indicating an evolutionary step or enhanced capabilities compared to the Model I.
• 8400-010: An older ProAct Model II Speed Control that has seen newer revisions like the 8400-059 and potentially falls into the functional lineage of the 9907-1290.
• 8400-059: A newer ProAct Digital Speed Control, often described as an updated replacement for earlier 8400-series models.
• ProAct Actuators: Such as ProAct I or ProAct II actuators (e.g., 8256-series), which receive commands from the speed controller and perform the physical adjustment.
• ProAct Drivers: Intermediate modules (e.g., 8400-706, 8400-703) that provide necessary power and interface capabilities between the ProAct controller and actuator in certain system configurations.