Woodward 8404-067 ProTech-GII Over-Speed Protection System

Product Description

Woodward 8404-067 is a ProTech-GII over-speed protection system designed to monitor and shut down prime movers—such as steam, gas, and hydro turbines—during over-speed or unsafe conditions. It features triple-redundant architecture and fast response capabilities to ensure critical safety in industrial applications.

Technical Specifications

• Model: ProTech-GII Overspeed Protection System

• Part number: 8404-067

• Input power: 18 to 32 VDC (nominal 24 VDC)

• Speed input: Accepts up to 3 independent magnetic pickups (1–30 Vrms, 2–25 kHz)

• Trip point setting: 500 to 25,000 RPM (user-configurable)

• Response time: Less than 5 milliseconds typical

• Redundancy: Triple-module configuration with independent CPUs

• Relays: 4 safety relays per module, independently configurable

• Display: Built-in LCD for monitoring and configuration

• Communication: Modbus RS-485 and Ethernet support

• Operating temperature: –40 to +70 °C

• Enclosure: NEMA 4X/IP66 rated, for harsh environments

• Certifications: SIL 3 (per IEC 61508), CE, CSA, and ATEX compliant

• Mounting: Panel or DIN-rail installation