Kollmorgen PA2800 Voltage monitoring module

The speed reference ramps up by the programmed rate. 3. As the turbine speed increases, the PID controller will take over control, and the valve ramp jumps to 100%, which is out of the way.If for some reason the turbine shuts down, due to a 2301D-ST shutdown, and the Run and Start contact inputs are closed, a toggle on the Reset contact will initiate the start sequence

The speed PID controller 

then ramps the speed reference at a controlled rate to the rated speed setpoint. At any time, momentarily closing the Speed Raise or Speed Lower discrete input will stop the turbine from ramping. This allows the operator to heat soak the turbine at various speeds. To continue the ramp, manually close the Speed Raise Contact.

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