Product Description

Model 8200-206 is a reliable solution for overspeed protection. This part was released in the ProTech 203 Overspeed Protection series, manufactured by Woodward. The ProTech 203 system works by sensing prime mover speed through three individual magnetic pickups (MPUs), which are each tied to separate speed-sensing units within the system. Model 8200-206 is a 24 Vdc input, energize-to-trip model.

The three speed-sensing units in the 8200-206 system are enclosed in a single, locked enclosure. Key access is required to switch between MONITOR and PROGRAM modes. Aside from that, the units function largely independently of one another, continually monitoring for overspeed and/or loss of input conditions. They are configured for a two-out-three voting method.

Testing, repair, or replacement of any single speed-sensing unit within the 8200-206 overspeed protection system requires little to no downtime in operation. The configuration of the units allows for two units to maintain complete control of the system in the even the third is offline.

Functional status of the 8200-206 system is shown by LED indicators on the front panel of each unit. Separate LEDs indicate:

• Failure of an MPU or its wiring
• Errors in the unit’s CPU operation
• A tripped speed-sensing unit (there is also a separate alarm output for this condition)

The 8200-206 system is only suitable for non-hazardous locations. It should be installed where it will be protected from sunlight, water, and vibration, and will remain in an operating temperature range of –25 to +60 °C (–13 to +140 °F). More location requirements and installation instructions can be found in the ProTech 203 Overspeed Protection System Manual 85206 (Revision F).