Product Details：

Woodward 5415-623 is a microprocessor-based 505E digital turbine controller, suitable for single extraction or admission steam turbine units. It can realize independent closed-loop control of turbine speed, generator load and extraction steam pressure, adopting decoupling control algorithm to reduce the mutual interference between speed loop and pressure loop, and meet the dual demands of power generation and process steam supply in production. This controller collects pulse speed signals from magnetic pickups, 4-20mA analog pressure, temperature and flow signals, as well as discrete trip, interlock and equipment auxiliary contact signals. It outputs two independent actuator drive signals to control the main steam valve and extraction valve respectively, adjusting the valve opening dynamically according to the deviation between the actual value and setpoint, so as to stabilize the shaft speed, unit load and extraction header pressure. The front panel is equipped with a two-line 24-character LCD display and membrane keypad. Operators can configure startup ramp rate, idle speed, rated speed, extraction pressure setpoints and alarm thresholds, view first-out fault logs, and perform local start, stop and reset operations on site. It is equipped with abundant configurable I/O resources, including multi-channel analog inputs, analog outputs, discrete inputs and discrete outputs, which can be connected with emergency trip systems, lubricating oil pressure switches, vibration monitors and safety interlock relays. It supports RS232 and RS422 serial communication based on Modbus protocol, realizing bidirectional data exchange with DCS and SCADA systems for remote monitoring, parameter modification and remote control command reception. It integrates overspeed protection logic and comprehensive hardware self-diagnosis function. It can detect speed signal loss, actuator feedback deviation, module power failure and internal hardware abnormality, trigger alarm and safe trip action according to preset protection sequence to avoid turbine over-speed and over-pressure damage. It adopts standard panel mounting structure, suitable for installation in turbine local control cabinet and central control room. It is widely used in petrochemical, chemical, paper making and cogeneration plants with single extraction steam turbines, used for new unit construction, old mechanical governor renovation and spare parts replacement. It is a mature multi-variable control solution for extraction steam turbine control.

Key specifications：Woodward 5415-623 505E extraction turbine controller,24VDC power supply,dual independent actuator outputs,extraction/admission pressure control,Modbus RS232/RS422,local LCD keypad,panel mount. Operating temperature range: -20°C to +60°C. It supports speed loop calibration, extraction pressure PID tuning, actuator stroke test and communication verification during maintenance.

This 505E controller cooperates with magnetic pickups, hydraulic actuators and field transmitters to build stable speed-load and extraction pressure closed-loop control system. The HMI panel helps operators monitor running variables and adjust control parameters conveniently.