WOODWARD 2301E-ST Digital Steam Turbine Speed & Load Sharing Controller

Product Brief Description

Woodward 2301E-ST is a 32-bit microprocessor-based digital controller specially engineered for small steam turbines. It delivers integrated speed regulation, load sharing, startup sequencing and turbine protection. It serves as the upgraded successor to the 2301D-ST, maintaining compatible form, fit and wiring while adding enhanced diagnostics, dual serial ports and fault event data logging. Parameters are configured via Woodward Control Assistant service software.

Product Features & Functions

• High precision speed governing for single-valve steam turbines, droop and isochronous control modes
• Parallel generator load sharing with soft load transfer and unload functions
• Automatic / semi-automatic / manual turbine startup, valve ramp control and heat soak logic
• Dual redundant magnetic pickup speed inputs, meets API-611 standards
• Critical speed avoidance, overspeed protection, shutdown & alarm logic
• Dual serial ports: independent RS232 and RS422, supports Modbus RTU for DCS connection
• Event data capture: records high-speed pre-trip fault data for post-failure analysis
• PWM output for driving Woodward L/F/P series electro-hydraulic actuators
• Built-in self-test, watchdog protection and real-time diagnostic status indicators

Application Scenarios

• Small steam turbine generator packages for industrial power plants
• Steam turbine driven pumps, compressors and mechanical drive equipment
• Island-mode power supply and grid-parallel turbine gensets
• Oil & gas, chemical, pulp & paper process turbine retrofits
• Cogeneration / CHP systems and onsite captive power stations

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