Products Description
Product Overview
The Woodward 9907-963 is a highly reliable Speed Switch Module designed for the EasyGen® 3200 series control systems. This specialized module provides critical overspeed and underspeed protection for engines, turbines, and rotating machinery across various industrial applications. As part of Woodward’s comprehensive control and protection ecosystem, the 9907-963 offers precise speed monitoring with configurable setpoints and time delays, ensuring equipment operates within safe speed ranges while providing essential shutdown protection against potentially damaging overspeed conditions.
Key Features
Dual Setpoint Configuration: Independently configurable overspeed and underspeed protection thresholds
Flexible Input Options: Supports magnetic pickups (MPU) and proximity sensors for speed detection
Adjustable Time Delays: Programmable delays for overspeed and underspeed conditions to prevent nuisance trips
Self-Diagnostics: Continuous monitoring of input signal quality and module health
LED Status Indicators: Comprehensive visual status for power, input signal, and trip conditions
Robust Construction: Industrial-grade design for harsh operating environments
Easy Integration: Seamless compatibility with EasyGen® 3200 series control platforms
Technical Specifications
Parameter | Specification |
| Manufacturer | Woodward |
| Product Family | EasyGen® 3200 Series |
| Model Number | 9907-963 |
| Function | Speed Switch/Protection Module |
| Input Types | Magnetic Pickup (MPU), Proximity Sensor |
| Input Frequency Range | 5 Hz to 12 kHz (typical) |
| Setpoint Range | 50 to 9,999 RPM (configurable) |
| Setpoint Accuracy | ±1 RPM (digital resolution) |
| Time Delay Range | 0.1 to 25.5 seconds (programmable) |
| Output Relays | 2 SPDT relays (overspeed and underspeed) |
| Relay Rating | 5A, 30V DC / 250V AC resistive |
| Power Supply | 11-35V DC (standard) |
| Operating Temperature | -40°C to +85°C |
| Safety Standards | ISO 13849, IEC 61508 (SIL compliant) |
Protection Functions
Overspeed Protection: Monitors for speed exceeding preset limit
Underspeed Protection: Detects speed falling below minimum threshold
Programmable Delays: Adjustable trip delays for both functions
Output Configuration
Two independent SPDT relay outputs
Configurable normally open/closed contacts
Relay status indication via LED indicators
Typical Applications
Generator Sets: Engine overspeed protection for diesel and gas generators
Industrial Turbines: Speed monitoring for mechanical drive turbines
Compressor Systems: Rotating equipment protection in pipeline applications
Marine Propulsion: Main engine overspeed protection
Power Generation: Gas and steam turbine protection systems
