Kollmorgen S403M-SE Pulse input module

The Speed Reference will increase up to the rated speed reference after the Start Command is issued. The speed of the turbine is controlled by the trip and throttle valve or control valve until turbine speed reaches speed reference. Figure 4-4 is an example of a manual start sequence. 1. Close the Run / Shutdown discrete input, toggle the Reset discrete input, and close the Start / Unload contact. 2. The speed reference, the valve ramp reference, and the actuator demand ramp up by the programmed rate to the rated speed reference.

By opening the trip and throttle valve 

or control valve the turbine speed will increase. The operator has control over where the speed of the turbine is at by using the trip and throttle valve. This gives the operator a chance to heat soak the turbine at different speed levels. 4. Continuing to open the trip and throttle valve will cause the speed to increase until the speed matches the speed reference. The PID controller will then take over control. 5. The operator can then control the speed of the turbine with the raise and lower speed discrete inputs.

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