The Woodward 9907-164 is a microprocessor-based governor for precise steam turbine control. This control unit manages single extraction and/or admission valves using split-stage actuators. It is a core component of the renowned Woodward 505 and 505E series control systems.
Control Interface and Display
The front panel integrates a 30-key multifunction keypad for on-site configuration. It features a two-line display with 24 characters per line for clear operational feedback. Menu-driven software allows field engineers to adjust parameters directly. Dedicated overspeed test buttons provide essential safety testing functionality.
Comprehensive I/O and Communication
The 9907-164 includes 16 contact inputs, with 4 dedicated and 12 programmable. It also features 6 programmable analog inputs for 4-20 mA current signals. A built-in RS-232/RS-422 slot supports Modbus protocol for system integration. Standard capabilities include critical speed avoidance, valve limiters, and an auto-start sequence.
Robust Construction and Environmental Ratings
The unit is housed in a rugged enclosure rated IP56 (IEC 60529) for protection. It operates across a wide temperature range from -4°F to +140°F (-20°C to +60°C). The design withstands storage temperatures from -40°F to +185°F (-40°C to +85°C). It also meets humidity standards of 95% at 20°C and 55°C for 48 hours.
Power, Physical Specs, and Software
The control unit requires a +24 VDC input at 1 Amp for operation. It has substantial dimensions of 14″ W x 11″ H x 4″ D and weighs 9.11 lbs. Configuration and monitoring use Woodward’s 505View or OpView™ software. This unit is manufactured in the USA for global industrial applications.
Detailed Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer & Series | Woodward 505/505E Governor |
| Model Number | 9907-164 |
| Primary Control Function | Steam Turbine (Extraction/Admission) |
| Display | 2-line x 24-character |
| Keypad | 30 Multi-function Keys |
| Digital Inputs | 16 Contact (4 Dedicated, 12 Programmable) |
| Analog Inputs | 6 Programmable (4-20 mA) |
| Communication | RS-232/RS-422 with Modbus |
| Input Voltage | +24 VDC @ 1 A |
| Enclosure Rating | IP56 (IEC 60529) |
| Operating Temperature | -4°F to +140°F (-20°C to +60°C) |
Details
| Weight | 0.91 kg |
|---|---|
| Dimensions | 108 × 70 × 108 mm |
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