GE IS200VAOCH1C MKVI, VME Analog Output Card

الوصف

The GE IS200VAOCH1C is a VME Analog Output Card for the Mark VI series of GE’s Speedtronic Gas Turbine Control Systems. It is a specialized board that manages analog output signals, acting as a crucial interface between the main controller and field devices such as actuators and valves. The ‘C’ suffix indicates an updated or later revision of the board, which may include minor improvements or component changes compared to earlier ‘A’ or ‘B’ versions.

Key Features and Functionality

The IS200VAOCH1C is designed for precise and reliable analog signal generation in industrial environments. Here’s a breakdown of its primary functions:

• Analog Output Control: This card, often referred to as a VAOC board, provides 16 analog output channels. These outputs are typically used to control devices that require a continuous signal, such as a 4-20 mA current loop . This allows the control system to precisely manipulate the position of a control valve or the speed of a motor.
• Signal Conversion: The board converts digital control values from the main Mark VI controller into corresponding analog current signals. This conversion is handled by a high-resolution 16-bit D/A converter, ensuring a high degree of accuracy and precision in the output signals.
• TMR Support: The IS200VAOCH1C supports Triple Modular Redundancy (TMR) systems. In a TMR setup, three separate VAOC boards are installed in different VME racks, each receiving the same command from the redundant controllers. A voting mechanism on the terminal board or in the field can then select the correct output, ensuring that the system can continue to operate even if one of the boards fails.
• Robust Design: Like other boards in the Mark VI series, the IS200VAOCH1C is built to withstand harsh industrial conditions. The circuit board is protected by a conformal coating to guard against environmental factors like moisture, dust, and chemical contaminants.
• Diagnostics: The board’s faceplate features three LED indicators to display its status: RUN (flashing green), FAIL (solid red), and STATUS (flashing orange for diagnostic alerts). The board also performs several diagnostic tests to monitor for faults and potential issues, which is vital for maintaining system uptime.

Technical Specifications