







Product Description
Woodward 9907-345 ProTech 203 Overspeed Protection System
- Manufacturer: Woodward
- Model/Part Number: 9907-345
- Description: ProTech 203 Overspeed Protection System, 24 VDC, De-Energize-to-Trip, with Three Independent Magnetic Pickups, for Critical Machinery
Overview
- The Woodward 9907-345 is a ProTech 203 Overspeed Protection System designed to provide reliable overspeed protection for critical machinery such as turbines, engines, and compressors in industrial, marine, and power generation applications. It features a triple-modular redundant design with three independent speed-sensing units (A, B, C) for enhanced safety and fault tolerance.
Technical Specifications
Specification | Details |
---|---|
Model | 9907-345 |
Series | ProTech 203 |
Type | Overspeed protection system |
Power Supply | 24 VDC, 1 A per module (3 modules) |
Speed Inputs | 3 Magnetic Pickup Units (MPUs), 100 Hz–32 kHz, 1–60 Vrms |
Speed Range | 100–25,000 rpm (programmable MPU fail timeout) |
Trip Configuration | De-energize-to-trip, 2-out-of-3 voting |
Outputs | 2 voter relays per module (6 total), Form C, 5 A at 250 VAC |
Alarm Outputs | Visual (LEDs) and audible alarms, LCD display for error messages |
Features | Hot replacement, built-in self-test, remote reset, MPU fail timer |
Display | LCD per module (error codes: MPU fail, CPU failure, etc.) |
Operating Temperature | -25°C to +60°C (-13°F to +140°F) |
Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
Relative Humidity | 5% to 95%, non-condensing |
Vibration | 4 G, 10–2000 Hz |
Shock | 30 G peak |
Enclosure | NEMA 4/4X (dust-tight, watertight) |
Dimensions | 483 mm x 311 mm x 143 mm (19 in x 12.244 in x 5.62 in) |
Weight | < 14 lbs (6.35 kg) |
Mounting | Panel mount |
Certifications | CE, UL/cUL, Class 1 Div. 2 (Groups A, B, C, D) |
System Compatibility | Woodward 505/505E, MicroNet, diesel/gas engines, turbines |