Woodward 8290-185 Isochronous Speed ControlDescription The Woodward 8290 185 is a high performance, safety rated controller designed for mission critical applications in power generation, oil & gas, and industrial automation. It belongs to Woodwards 8000 series and is used for emergency shutdown (ESD), turbine overspeed protection, and compressor surge control. It also functions as an Isochronous Speed Control unit for gasoline or natural gas prime movers, compatible with actuators like the