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Product Introduction
The Woodward 9907-164 Digital Governor is an advanced electronic control solution designed for precise and stable speed regulation of engines and turbines in demanding industrial environments. As part of the proven Woodward 9907 digital governor series, the 9907-164 offers reliable performance in power generation, marine, and process control applications.
This model features a microprocessor-based control system with configurable inputs and outputs, allowing seamless integration with a wide variety of prime movers. Designed for both standalone and networked environments, the 9907-164 supports isochronous, droop, and load-sharing modes. It is particularly well-suited for applications that demand high-speed response, stable operation under load fluctuations, and integration with supervisory systems.
With built-in diagnostics, real-time communication capabilities, and a rugged mechanical design, the 9907-164 offers superior control, flexibility, and durability in mission-critical systems.
Product Specifications
| Parameter | Specification |
|---|---|
| Product Name | Digital Governor |
| Model Number | 9907-164 |
| Control Type | Digital microprocessor-based governor |
| Supported Engines | Diesel, gas, and steam turbines |
| Power Supply | 18–32 V DC |
| Speed Input Range | 0.5 – 25,000 Hz (magnetic or active speed pickups) |
| Operating Modes | Isochronous, Droop, Load Sharing |
| Input Types | 4–20 mA, 0–5 V, discrete digital inputs |
| Output Types | 4–20 mA, PWM, voltage, discrete relays |
| Relay Outputs | Up to 8 configurable |
| Communication Ports | RS-232 / RS-485, Modbus RTU |
| Diagnostics | Built-in event log, fault detection, system health monitoring |
| Ambient Operating Temp. | -40°C to +70°C |
| Humidity | 5% to 95% RH, non-condensing |
| Mounting | Panel-mounted (shock/vibration resistant) |
| Enclosure Rating | IP20 (suitable for control cabinets) |
| Certifications | CE, UL, CSA |
| Dimensions (W × H × D) | 355.6 x 279.4 x 101.6 mm |
| Weight | 4.13 kg |
Product Applications
The Woodward 9907-164 is designed for critical engine and turbine control tasks across various industrial sectors. Its applications include:
-
Power Generation Plants
For precise speed control and load balancing of diesel and gas generators. -
Marine Propulsion and Auxiliary Systems
Used in engine/generator systems for ships and offshore platforms. -
Oil & Gas Industry
Controls engines and turbines driving compressors and pumps. -
Process Industries
Regulates rotating equipment such as fans, conveyors, and mixers. -
CHP (Combined Heat & Power)
Supports cogeneration systems requiring real-time synchronization and control. -
Retrofitting of Legacy Systems
Ideal for replacing older analog governors with modern digital performance.
Product Advantages
-
Precise Digital Control
Ensures accurate speed regulation using advanced PID logic, even under varying load conditions. -
Broad Compatibility
Interfaces with many speed pickups, sensors, and external control systems. -
Fast Dynamic Response
Provides immediate response to load transients for engine and turbine protection. -
Flexible Configuration
User-programmable I/O and support for multiple operation modes. -
Rugged Industrial Design
Withstands harsh environmental conditions with a wide temperature range and vibration resistance. -
Integrated Communication
Supports Modbus communication for seamless SCADA/PLC integration. -
Built-In Diagnostics
Fault logging and system health monitoring enhance reliability and simplify troubleshooting.
Frequently Asked Questions (FAQ)
What does the Woodward 9907-164 control?
It controls the speed of diesel engines, gas engines, and turbines in industrial and power applications.
Is this governor suitable for load-sharing operations?
Yes, it supports both load-sharing and isochronous control for parallel generator sets.
Which speed input types are compatible?
It works with both magnetic pickups and active sensors from 0.5 Hz to 25,000 Hz.
Can I use it in high-temperature environments?
Yes, it operates from -40°C to +70°C, suitable for extreme environments.
Is Modbus communication supported?
Yes, RS-232/485 ports with Modbus RTU are standard for system integration.
Can the unit be panel-mounted?
Yes, it is designed for secure panel mounting and can handle vibration and shock.
How many output relays are available?
Up to 8 configurable relay outputs are available.
Does it support analog inputs?
Yes, it supports analog inputs such as 4–20 mA and 0–5 V.
Is it a good choice for retrofitting analog governors?
Absolutely. Its flexible interface and modern features make it ideal for upgrades.
What diagnostics are included?
Built-in diagnostics include event logging, fault alarms, and system status reporting.
Recommended Related Models (Same Series or Functional Alternatives)
| Model | Model Number | Description |
|---|---|---|
| Woodward Digital Governor | 9907-160 | Base model for general-purpose speed control |
| Woodward Digital Governor | 9907-161 | Additional I/O and analog input capability |
| Woodward Digital Governor | 9907-162 | Popular variant used in generator sets |
| Woodward Digital Governor | 9907-163 | Extended sensing range and enhanced diagnostics |
| Woodward 723 Plus Controller | 8440-2080 | Advanced digital engine controller with networking |
| Woodward 2301D Digital | 8200-1304 | Versatile digital load-sharing and speed controller |
Recommended Popular Woodward Models
| Model | Model Number | Application |
|---|---|---|
| Woodward 505XT | 9907-202 | Steam turbine controller with touchscreen HMI |
| Woodward EasyGen 3500 | 8440-2085 | Generator controller with load sharing and paralleling |
| Woodward CPC-II | 9907-1200 | Current-to-pressure converter for valve positioning |
| Woodward UG-25+ | 8273-124 | Mechanical-hydraulic governor with digital compatibility |
| Woodward ProTech 203 | 9907-147 | Triple-redundant overspeed protection system |
| Woodward 2301A | 8200-012 | Analog speed/load controller for basic engine control |
