Woodward 9905-463 Digital Speed Control Module

The Woodward 9905-463 Digital Speed Control Module is a precision-engineered digital governor designed to manage the speed of prime movers such as diesel engines, gas engines, and industrial turbines. As part of Woodward’s respected 2301D-ST (Speed/Temperature) product family, this module offers advanced speed control capabilities along with temperature-based logic for optimized machinery operation.

The 9905-463 provides proportional-integral-derivative (PID) speed control, multiple configurable input/output channels, and easy communication with supervisory systems. Its digital architecture enables precise tuning, real-time diagnostics, and smooth response to varying load conditions. It is suitable for both single-engine applications and complex engine-generator systems operating in parallel or islanded modes.

Built to function in the most demanding environments, the 9905-463 maintains exceptional reliability and accuracy, making it a favored solution in power generation, oil and gas, marine, and industrial automation settings.

Technical Specifications

Applications

• Power Generation: Used for digital speed control of gensets in both islanded and grid-parallel configurations.

• Marine Propulsion and Auxiliary Engines: Provides precision control of propulsion engines and onboard power systems.

• Oil and Gas Operations: Controls compressors and pumps driven by engines or turbines in upstream and midstream operations.

• Steam and Gas Turbines: Ensures stable and responsive turbine control for process industries.

• Industrial Engines: Governs speed in critical rotating equipment such as chillers, blowers, and conveyors.

• Backup Power Systems: Maintains speed and frequency stability in emergency generator systems.

Advantages

• High-Precision Speed Control: PID-based digital logic enables accurate and stable engine performance.

• Fully Programmable: Inputs and outputs are configurable to suit various application requirements.

• Robust Communication Options: Equipped with RS-232/RS-485 Modbus communication and optional CANopen.

• Environmental Resilience: Operates reliably in extreme temperatures and humid conditions.

• Real-Time Diagnostics: Monitors inputs, outputs, speed, and actuator position for improved serviceability.

• Versatile I/O: Analog and digital inputs and outputs allow integration with sensors, actuators, and safety systems.

• Compact and Durable Design: Saves panel space while ensuring long operational life in harsh environments.

• Enhanced Safety: Supports fault detection and shutdown procedures to protect engine and equipment.

• Easy Integration: Compatible with a wide range of engines, actuators, and monitoring systems.

• Global Certification: Complies with key industrial standards for safety and reliability.

Frequently Asked Questions (FAQ)

1. Q: What is the primary function of the 9905-463 module?

   A: It provides digital PID-based speed control for engines and turbines in industrial and power generation applications.

2. Q: Can the 9905-463 be used in marine engine applications?

   A: Yes, it is well-suited for both propulsion and auxiliary marine engine control.

3. Q: What type of sensors does it support?

   A: It accepts signals from magnetic pickup (MPU) speed sensors and analog input signals.

4. Q: Does this controller support communication protocols?

   A: Yes, it supports Modbus via RS-232/RS-485 and optionally CANopen for networked control.

5. Q: How many analog inputs are available?

   A: It offers three configurable analog inputs for use with sensors and external signals.

6. Q: What is the size and weight of the module?

   A: It measures 315 x 211 x 49 mm and weighs 1.59 kg.

7. Q: Is the control loop customizable?

   A: Yes, the PID parameters are fully adjustable using configuration software.

8. Q: Does the unit include any built-in diagnostics?

   A: Yes, it offers real-time monitoring of input/output status, actuator behavior, and fault conditions.

9. Q: What actuators can it drive?

   A: It is compatible with Woodward actuators using PWM or current-based drive signals.

10. Q: What is the operating voltage?

    A: The unit operates on a DC supply range of 18 to 32 VDC.