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The GE part number IC3600SSLA1 is a Setpoint Control Card. This is a specialized electronic circuit board used in GE Speedtronic Mark I and Mark II series turbine control systems. Its primary function is to provide a precise setpoint—a target value for a specific process variable, such as speed or temperature—which the main control system then tries to maintain.
Function and Key Features
In a control loop, a setpoint is the desired value for a controlled variable. The setpoint card provides this reference value, which can be adjusted by an operator. The main controller then compares the actual measured value of the variable to this setpoint and adjusts the control output to minimize the error between the two.
- Reference Signal Generation: The card generates a stable and accurate reference voltage or current that represents the desired setpoint. This signal is fed to the main controller.
- Adjustability: It often includes manual controls, like potentiometers, that allow an operator to precisely adjust the setpoint. This is crucial for tuning the system’s performance.
- System Integration: The card works in conjunction with other components of the control system, such as a feedback card (which measures the actual value) and a main control card (which adjusts the output).
- Robust Design: Like all GE industrial control boards, it’s built to withstand the harsh conditions of a power plant, including vibration, temperature fluctuations, and electromagnetic interference.
Applications
The IC3600SSLA1 is a legacy component, so it is primarily used in power generation facilities that still operate GE’s older Mark I and Mark II turbine control systems. It is an essential component for controlling various turbine parameters, including:
- Speed Control: It can be used to set the desired operating speed of the turbine.
- Temperature Control: It can be used to set a target temperature for a process, such as the turbine’s exhaust gas temperature.
- Load Control: It can be used to set the target electrical load for a generator.
Related Products and Alternatives
While the IC3600SSLA1 is specific to legacy GE systems, modern control systems use similar concepts. In modern PLCs (Programmable Logic Controllers) or DCS (Distributed Control Systems), the setpoint is a digital value that can be configured in software.
- Siemens SIMATIC S7: A family of PLCs where setpoints are configured and managed in the control program.
- Allen-Bradley (Rockwell Automation) ControlLogix: A modern PLC platform where setpoints are managed as digital tags.
- Emerson DeltaV: A DCS where setpoints are managed in a configurable software environment, often with a graphical user interface.
