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WOODWARD 9905-448｜Speed Control Module｜
Control type: digital electronic speed regulator
Suitable for prime mover steam turbines, gas turbines, and turbine expanders
Control functions: speed control, load control, extraction/replenishment control, cascade control
Input signal magnetic speed sensor (MPU), 4-20mA process signal, contact input
Output signal 4-20mA actuator driver, relay output, Modbus communication
Speed range 100-50000 RPM (configurable)
Accuracy ± 0.05% (digital control accuracy)
Large LCD graphic display screen (with backlight)
Communication interface RS-232/RS-485, Modbus RTU, Ethernet (optional)
Power supply 18-36V DC or 90-150V DC (redundant power input)
Main functions and features
Multi loop digital control: adopting advanced PID control algorithm, supporting multi parameter closed-loop control such as speed, load, pressure, temperature, etc
Flexible configuration capability: Programmable configuration through the front panel or Woodward GAP software to adapt to the control needs of different turbine machinery
Extraction/replenishment control: supports extraction pressure/flow control in combined heat and power (CHP) applications, optimizing energy efficiency
Redundant safety design: dual power input, redundant speed signal input, ensuring high reliability for critical applications
Friendly human-machine interface: Large LCD displays real-time trend charts, alarm information, and operating parameters, supporting multilingual menus
Powerful communication capability: Built in Modbus RTU/TCP protocol, seamlessly integrated into DCS/PLC systems (such as ABB, Siemens, Emerson, etc.)
Event recording function: automatically records start stop events, alarm history, and operation logs for easy fault diagnosis
WOODWARD 9905-448｜Speed Control Module｜
By structuring the information in this manner, the article provides a clear and organized understanding of input channels, transducer supply, and communication implementations in distributed control systems.
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