Description
The Woodward 9907-164 is a microprocessor-based 505 Digital Governor turbine control module manufactured by Woodward, Inc. Unlike AC-powered variants, this specific part number is designed for low-voltage DC applications (+24 VDC). It provides standalone management of industrial steam and gas turbines, offering precise control over speed, load, pressure, or flow parameters in power generation and mechanical drive systems.
Technical Specifications
| Parameter | Value |
| Manufacturer | Woodward, Inc. |
| Product Series | 505 Digital Governor / Turbine Control Platform |
| Part Number (MPN) | 9907-164 |
| Input Power Supply | +24 VDC nominal (at 1 A) |
| Speed Range | 0.5 to 25,000 Hz (MPU inputs) |
| Keypad & Display | 30-key multi-function keypad with a 2-line by 24-character display |
| Control I/O | 2 actuator drives; 6 analog inputs/outputs (4–20 mA options) |
| Communication Ports | RS-232 / RS-422 supporting Modbus protocol |
| Operating Temperature | -20 to +60 °C (-4 to +140 °F) |
| Enclosure Protection | NEMA Type 4X / IP56 (IEC 60529) rated for panel-door mounting |
| Dimensions | 14.0 in W × 11.0 in H × 4.0 in D (356 mm × 279 mm × 102 mm) |
| Approximate Weight | 9.11 lbs (4.13 kg) |
Supply Terms & Commercial Details
- Availability: Sourced through specialized industrial automation surplus, turbine parts distributors, and authorized legacy hardware providers.
- Lead Time: In-stock hardware typically ships within 1 to 3 business days.
- Warranty: 12-month standard supplier replacement or repair warranty covering functional hardware defects.
- Condition: New Surplus, Factory Open Box, or Fully Tested Refurbished (verify specific configuration logs and calibration certificates with your vendor prior to purchase).
- Pricing Note: Price subject to market conditions; contact us for a firm quote.
Engineering & Integration Guidance
When installing or servicing the 9907-164 505 controller within a turbine control panel door, observe the following parameters:
- DC Power Quality: Ensure the +24 VDC supply is clean, stable, and isolated from heavy inductive switching transients to prevent unexpected controller reboots or power trips.
- Panel Mounting and Sealing: Verify that the panel cutout gasket is seated evenly to maintain the IP56 seal against moisture and dust ingress in demanding industrial environments.
- Signal Shielding: Terminate shielded twisted-pair cables for speed sensors (MPUs) and 4–20 mA analog control loops directly to the cabinet ground bus to minimize electromagnetic interference (EMI).
Frequently Asked Questions
What differentiates the Woodward 9907-164 from other 505 models?
The 9907-164 is specifically engineered to run on a +24 VDC input power architecture, making it ideal for facilities utilizing direct current control distribution rather than high-voltage AC mains.
Can the 505 controller communicate with a plant DCS or SCADA system?
Yes. It features onboard serial communication interfaces (RS-232/422) supporting standard industrial Modbus protocols, allowing seamless data exchange with supervisory control networks.
How are configuration and tuning handled?
Parameters can be configured locally using the front-panel 30-key multi-function keypad and display menu, or remotely via Woodward’s dedicated software toolsets (such as 505View or OpView).
