Woodward

Key Features

• Triple - Channel Redundancy: Three fully independent speed - sensing units, each with its own power supply, MPU interface, and trip relay, ensuring no single - point failure disables protection.
• 2 - out - of - 3 Voting Logic: Trip relay activation requires agreement from at least two units, balancing safety and avoiding false trips from a single faulty unit.
• De - energize - to - Trip Safety: Default safety configuration where power loss triggers the trip relay, minimizing risk of failed trip during power outages.
• On - line Maintainability: Modular design allows hot - swapping of a single failed unit without shutting down the prime mover, reducing downtime.
• Real - time Monitoring & Diagnostics: Front - panel LCDs display speed from each MPU, the highest speed reading, and system status; LEDs indicate power, MPU health, and trip conditions.
• Configurable Protection Parameters: Programmable overspeed setpoints, MPU fault timeouts, MPU fault setpoints, and gear tooth counts to match specific machinery requirements.
• On - line Testing Capability: Supports overspeed test mode without triggering actual turbine trips, enabling verification of system functionality during operation.