Product Overview

The Woodward 9907-1182 is a high-performance 505 Enhanced Digital Governor Controller designed specifically for steam turbine applications. It provides precise speed governing and process control for single-valve and multi-valve turbines, integrating extraction and admission management to optimize efficiency in complex industrial power and heat cycles.

Technical Specifications

Engineering Advantages

Optimized Steam Management
Handles extraction and admission control internally, enabling stable turbine speed or frequency control while simultaneously managing process steam demand for improved plant efficiency.

Universal Power Flexibility
Supports both DC (125 VDC nominal) and AC (120 VAC nominal) inputs, allowing integration with station batteries or utility power without additional converters.

High-Resolution Speed Governance
Advanced digital PID control eliminates drift found in analog systems, delivering fast response to load changes and preventing overspeed or mechanical stress.

Rugged Field Interface
Equipped with an industrial LED display and membrane keypad, enabling direct access to diagnostics and parameter tuning in harsh turbine environments.

Simplified Maintenance
REV B enhancements improve terminal layout and internal diagnostics, reducing commissioning time and minimizing maintenance effort.

FAQs

Does the 9907-1182 support extraction steam control?
Yes. It includes full support for extraction and admission steam management alongside primary speed control.

What is the maximum power draw for this unit?
The controller consumes up to 143 VA. Ensure adequate power supply capacity for continuous operation.

Is this a direct replacement for older 505 digital governors?
It is compatible with many 505 series installations, but power requirements and application features should be verified before replacement.

Can I configure this controller without a PC?
Yes. Full configuration and tuning can be performed via the front-panel LED display and keypad.