Woodward Safety Systems

Safety Systems for Industrial Applications

ProTech®-GII Overspeed Protection Device

Woodward’s ProTech®-GII is an overspeed safety device designed to safely shut down steam, gas, and hydro turbines upon sensing an overspeed or over acceleration event. This device accurately monitors turbine rotor speed and acceleration via active or passive MPUs (magnetic pickups) and issues a shutdown command to the turbine’s trip valve(s) or corresponding trip system.

The ProTech-GII is IEC61508 SIL-3 Certified and API670 & API612 Compliant.

Woodward Safety Systems - ProTech TPS

The API-670 Compliant Safety PLC

ProTech®TPS Total Protection System

Safety PLC with Integrated Overspeed Protection

  • Adheres to API-670 guidelines
  • TÜV certified to Safety Integrity Level (SIL) 3
  • Programmable analog and discrete inputs
  • Overspeed and overacceleration
  • 2-out-of-3 voting
  • On-line repairable

Woodward’s ProTech®TPS PLC safety system is a SIL-3 system for any size steam-, gas-, or hydro- turbine, as well as compressors, engines and plant process equipment. This safety PLC's fast (12 millisecond) response time, 0.5 to 32 000 rpm speed range, and integrated overspeed and acceleration detection/protection functionality make it ideal for application on critical high-speed rotating motors, compressor, turbines or engines.

The ProTechTPS is IEC61508 SIL-3 Certified and API670 & API612 Compliant.