GE IS200VSVAH1A MKVI, VME Servo Card

الوصف

The GE IS200VSVAH1A is a VME Servo Card for the Mark VI series of GE’s Speedtronic Gas Turbine Control Systems. This specialized board, also known as a VSVA card, is designed to provide high-speed, precise control of servomotor-driven actuators, which are critical for controlling fuel flow and other vital functions in a gas turbine.

Key Features and Functionality

The VSVAH1A is a crucial component for achieving tight and accurate control over turbine operation. Its main functions include:

• Servomotor Control: The card generates the necessary output signals to drive a servomotor, which in turn controls the position of a valve or actuator. This is essential for functions like controlling fuel valves, where very precise adjustments are required to maintain the turbine’s speed and load.
• Closed-Loop Control: The VSVAH1A operates as part of a closed-loop control system. It receives a command signal from the main Mark VI controller and uses a feedback signal from a position sensor on the actuator to ensure that the actuator moves to the commanded position. The card performs the necessary Proportional-Integral-Derivative (PID) control calculations to achieve this.
• High-Resolution Output: The card features a high-resolution Digital-to-Analog Converter (DAC) to produce an analog output signal for the servomotor driver. This ensures a high degree of precision in the actuator’s position.
• VMEbus Interface: The card plugs directly into the VME backplane of a Mark VI rack. This allows for high-speed communication with the main controller and other I/O cards in the system, which is necessary for the rapid response times required for turbine control.
• TMR Support: The IS200VSVAH1A supports Triple Modular Redundancy (TMR) systems. In a TMR setup, three separate VSVA cards are installed, each receiving the same command. The system then uses a voting process to ensure accuracy and reliability, which is critical for safety and performance.

Technical Specifications