Product Description

The ProTech 203 Overspeed Protection System is a series of digital overspeed trip devices. This series has several models for various voltage input and trip relay needs. Model 8200-209 is a 120 Vac/dc input, de-energize-to-trip model in this Woodward series. With correct configuration, this system can be compatible with different combinations of power sources.

Through three individual magnetic pickups (MPUs), this device samples prime mover speed every 5 ms. The 8200-209 system actuates its relay output based on a two-out-of-three hardware vote, completed with three identical speed-sensing units, each performing its own speed calculation. Although these individual units are connected to provide this hardware vote, the system is designed to continue operations with only two units online.

Some features of the 8200-209 overspeed protection system include:

• Remote reset
• Built-in self-test
• Key lock
• Functional status LED indicators

The modular design of model 8200-209 includes a separate front panel for each of the three speed-sensing units. This panel has a touchpad, two-line LCD display, and a set of LED indicators. All three units have their own power supply but are in the same key-locked enclosure to prevent unauthorized access to the system’s programming.

The actual speed of each speed-sensing unit can be viewed from the unit’s front panel. In the event overspeed conditions are met, if the current speed reaches above the previous peak speed, peak speed is updated and stored in non-volatile memory. Updates and storage continue even after a trip.

Pease refer to Woodward ProTech 203 Manual 85206 (F) for more details on model 8200-209, including safety precautions and installation instructions.