Woodward 9905-976 Overspeed Protection System

Product Description:

• Type: Overspeed Protection System
• Brand: Woodward
• Model Number: 9905-976

Specifications:

• Dimensions: 482.6 x 310.4 x 142.7 mm
• Weight: Less than 15 lbs
• Input Voltage: 88-132 Vac, 90-150 Vdc
• Keypad/Display: 1 Keypad and Display per Module
• Operating Temperature: -25 to 60°C
• Response Time: Max 40 ms from speed sampling to trip relay activation
• Trip Speed Set Point: 250 rpm minimum, 25,000 rpm maximum
• MPU Fail Set Point: 100 rpm minimum, 25,000 rpm maximum

Features:

• Three Separate Speed Calculations: Each unit performs its own speed calculation and participates in a two-out-of-three hardware vote to determine overspeed conditions, enhancing reliability and precision.
• Modular Design: Designed to minimize prime mover downtime with a modular and voting configuration, allowing easy replacement and system redundancy.
• Energize-to-Trip Model: Activates a trip relay to shut down the system if overspeed conditions are detected, ensuring protection for equipment.
• Tunable Parameters: Includes adjustable trip speed set point, MPU fail set point, and the option to trip on MPU failure, offering flexibility to tailor the protection system to specific applications.