Turbine & Engine Speed Regulator | Buy Woodward 9905-760

Availability: 99 left in stock

Product Overview The Woodward 9905-760 represents the high-performance digital core of the 2301D series. This microprocessor-based governor control unit regulates the speed of engines...

SKU: 9905-760

Manufacturer: Woodward
Product No.: 9905-760
Product Type: Digital Speed Controls
Product Origin: USA
Payment:T/T, Western Union
Weight: 2500g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Woodward 9905-760 represents the high-performance digital core of the 2301D series. This microprocessor-based governor control unit regulates the speed of engines and turbines with surgical precision. It manages complex load-sharing logic among multiple generator sets, ensuring balanced power distribution across the bus. By replacing legacy analog hardware, the 9905-760 introduces digital stability, preventing frequency oscillations in isolated microgrids or systems paralleled to an infinite utility bus.

Condition: 100% Brand New Original Factory Stock.

Technical Specifications

The 9905-760 utilizes advanced digital processing to interface with magnetic pickups and fuel actuators.

Parameter	Specification
Catalog Number	9905-760
Series	2301D Digital Control
Input Power	24 VDC (18–40 VDC Range)
Control Modes	Isochronous and Droop Speed Control
Speed Range	100 – 10,000 RPM (MPU Dependent)
Output Signal	Actuator Drive Signal (Fuel/Steam Control)
Interfaces	MPU Input, Analog Bias, Load Sharing Lines
Operating Temp	–40°C to +85°C
Dimensions	250 mm × 180 mm × 60 mm
Weight	2.5 – 3.0 kg

Engineering Advantages

Digital Accuracy & Repeatability: The 2301D architecture eliminates the drift inherent in older analog potentiometers. The microprocessor ensures that the engine hits its rated speed and load-sharing targets every time, regardless of aging components or ambient temperature swings.
Dynamic Response Tuning: The module allows for precise adjustment of gain, reset, and actuator compensation. This enables engineers to tune the control loop to match the specific inertia of diverse turbine or engine types, resulting in faster recovery times after sudden load steps.
Superior Signal Integrity: Integrated signal conditioning filters high-frequency noise from the Magnetic Pickup (MPU) circuit. This prevents "phantom" speed signals and erratic actuator behavior, which is common in high-interference industrial environments.
Flexible Operational Modes: Users can toggle between Isochronous mode (maintaining 100% constant frequency) and Droop mode (proportional speed drop). This flexibility supports both mission-critical standalone power and grid-parallel operations.
Ruggedized Thermal Profile: Rated for operation from –40°C to +85°C, the 9905-760 thrives in extreme environments, from arctic oil fields to tropical marine engine rooms.

FAQs

Q: Can the 9905-760 replace older analog 2301A models?

A: Yes, the 2301D 9905-760 acts as a digital upgrade for the 2301A series. While it shares similar functional logic, the digital interface provides better stability. Always check your specific actuator signal requirements (current vs. voltage) before retrofitting.

Q: How does the module handle a "Loss of Speed" signal?

A: The 9905-760 features failsafe logic. If the MPU signal fails while the engine is running, the controller immediately de-energizes the actuator drive output to shut down fuel delivery, preventing an uncontrolled engine runaway.

Q: Does this unit require external software for basic setup?

A: While the 2301D can be configured via Woodward service tools for advanced parameters, most primary settings (Speed, Gain, Droop) remain accessible for field adjustment to ensure rapid commissioning on-site.

Q: Is the 9905-760 compatible with different MPU types?

A: The unit accepts standard passive magnetic pickups. The speed range is widely adjustable from 100 to 10,000 RPM, allowing it to interface with various gear tooth counts on flywheel housings.

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Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

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Maintenance Manager, USA

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Engineering Lead, Germany

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