SETS controller is a universal and simple ETS system with free configuration function, with high integration, compact structure, easy installation, high universality, fully functional, flexible configuration, automatic fault diagnosis and so on. Same as larger ETS system, SETS has the  functions of 2 out of 3 voting for important signals. It used for the emergency trip system of small steam turbine unit. The trip protections include electrical overspeed, high axial displacement, high vibration, high lube oil pressure, generator fault, low vacuum pressure in condenser, MFT protection, high temperature of thrust bearing pad bush-metal, DEH trip, manual trip, etc.