WOODWARD 9905-864 Steam Turbine Controller

Power Type: AC/DC, input voltage is 90 - 150 VDC or 88 - 132 VAC (47 - 63 Hz).

Shell Protection Class: NEMA 4X, featuring waterproof and dustproof capabilities, and can be used in corrosive environments.

Dimensions: 19 inches (483 mm) in width × 12.2 inches (310 mm) in height × 4.1 inches (105 mm) in depth.

Inputs: There are 8 discrete contact inputs, including start, speed up, speed down, trip, reset, idle, remote speed enable, and overspeed test, etc., selected by connecting a 5 - 28 VDC power supply. In addition, there are 2 magnetic pickup inputs with a minimum input voltage of 1 VRMS, a minimum frequency of 200 Hz, and a maximum frequency of 15 kHz; 1 analog input for remote speed setting signal (4 - 20 mA or 1 - 5 VDC, internal jumper selectable).

Outputs: There are 2 analog outputs, which can provide actual speed output (scalable, 4 - 20/0 - 1 mA) and configurable readings (scalable, 4 - 20/0 - 1 mA); there are also 4 relay outputs.

Speed Control: It has dual speed control dynamic characteristics and an overspeed trip test function, which can precisely control the turbine speed. There is a default critical speed band of 1500 to 1800 rpm, which can also be customized by the user. When the turbine operates within this speed band, the controller will quickly change the speed to protect the turbine from excessive vibration.

Status Monitoring and Display: The front panel is equipped with 6 switches and LED indicators, which can display the status of 2 magnetic pickups, overspeed test, remote speed setting signal, and shutdown, etc., facilitating operators to quickly read system information and interact.

Programming and Configuration: Settings can be made through a separate handheld programmer to reduce accidental changes to the system, and users can set control logic and parameters according to their needs.

Power Generation Field: It can be used to control steam turbines in thermal power plants, precisely adjusting the rotational speed and load of the turbine to ensure stable power generation by the generator, and improving power generation efficiency and power quality. It is also applicable to some industrial self-owned power plants to meet the enterprise's own electricity demand, and the excess electricity can be connected to the power grid.

Oil and Gas Field: In the oil refining process, it is used to control steam turbines that drive equipment such as pumps and compressors to ensure the stable operation of the process flow, such as crude oil transportation and oil refining links. In the process of natural gas extraction and processing, it can control steam turbines to provide power for natural gas compression, liquefaction and other operations, ensuring efficient collection, transportation and storage of natural gas.

Chemical Industry Field: There are many equipment in chemical production that need to be driven by steam turbines, such as reactor agitators and material transfer pumps. This controller can precisely control the turbine, making the material processing, chemical reaction and other links in the chemical production process proceed stably in accordance with the process requirements, ensuring product quality and production safety.

Iron and Steel Field: In steel plants, it can be used for steam turbines that drive equipment such as blast furnace blowers and rolling mills, helping to adjust the operating speed of the equipment, ensuring stable air supply during steel production and the accuracy of steel rolling, and improving the efficiency and quality of steel production.

Marine Field: It can be installed in the steam power system of ships to control the steam turbine to provide propulsion power for the ship, or to drive auxiliary equipment such as generators and water pumps on the ship, ensuring the stable operation of the power system and the normal operation of various auxiliary functions during the ship's navigation.

Other Fields: It can also be applied to industries such as wood processing, stone processing, rubber manufacturing, environmental protection, water treatment, and refrigeration. It is used to control related steam turbines, providing stable power for wood drying, stone cutting, rubber mixing, operation of sewage treatment equipment, driving of refrigeration system compressors, etc., and helping the smooth progress of production processes in various industries.