Product:Woodward 8444-1092 Multifunction Relay 8444-1092 in stock with good price

The 505H has six independent Governor References which are divided into two different sets of Controls. The Droop, Isochronous, and Loadsharing References are all associated with the Speed Control, while the Gate, Level, and Power References are associated with the Position Control. The outputs of these two Controls are limited at the PID by the gate limit. The selected output sets the actuator output current. Many of the Governor References have the option of an External Signal to determine the position setpoint. An integrated manual control is also provided to allow manual setting of the gate servomotor (and blade servomotor, if it exists). The manual control signal overrides the signals from either of the controllers. Additional features of the 505H include frequency control, isochronous loadsharing, brake circuit, creep detection, and small system detection. There are two serial communications ports which can be used to monitor and control the turbine using Modbus protocol.

Integrated Manual Control is available to manually position the gate servomotor. This operates equivalently to an external manual controlling device, in that the setpoint signal provided by either the Speed Control or Position Control is ignored, and only the Manual Control signal is used to determine the gate position.

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