GE IS200BAIAH1BEE Logic control card

The process control can be configured to control any system process, related to or affected by turbine speed or load. Typically this controller is used as a turbine inlet or exhaust pressure controller. The process control is a PID controller that compares a 4–20 mA process signal with the process setpoint. The PID controller sets the speed controller setpoint until the process signal and the setpoint match. The process setpoint is adjustable with raise or lower contact inputs, or the communication links. Also, the setpoint can be directly set by entering the new setpoint through Modbus communications. In addition, a remote process setpoint analog input can be programmed to remotely position the cascade setpoint.

Process Control Example: 

1. Let’s take for example that we want to control the turbine exhaust pressure with a transducer range of 0–100 psi (0–690 kPa). 

2. The generator is tied to the utility bus in droop, so as the process changes, the load will change. 

3. Here are the variables that need to be set: a) Under the Service menu P**ANALOG I/O SETTINGS**.  02 INPUT #1 MIN VALUE (UNITS) = 0 psi (0 kPa)  03 INPUT #1 MAX VALUE (UNITS) = 100 psi (690 kPa)

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