Note; All products on this site are special products, the market price has been fluctuating, the specific customer service offer shall prevail, because the product is a new product, the picture is not a real shot, please confirm with customer service before placing an order model and product, price and other details, the site used, new are for sale, please contact customer service communication. IS200VSVOH1BDC is a servo control card integrated in GE (General Electric) Mark VI turbine control systems. Designed specifically for servo valve control of gas and steam turbines, it delivers high-precision servo valve interface I/O and pulse rate input processing capabilities. The card supports 2-coil or 3-coil servo configurations (with 3-coil setups compatible with TMR - Triple Modular Redundancy - applications), and is adaptable to both active and passive speed sensors with a pulse frequency processing range of 2Hz to 14kHz. Featuring a 4-channel servo control architecture and compatibility with LVDT/LVDR feedback, it ensures precise positioning and stable operation of critical turbine actuators.
Core Functions and Architecture
Servo Valve Control and I/O Interface
Core Functions: It drives and monitors electro-hydraulic servo valves to enable precise regulation of turbine fuel and steam flow rates. The card supports 2-coil or 3-coil servo configurations, with the 3-coil setup dedicated to TMR redundant systems for enhanced reliability.
Pulse Rate Input: It processes frequency signals ranging from 2Hz to 14kHz, suitable for speed/position closed-loop control scenarios such as diverter feedback.
Sensor Compatibility: It is compatible with both active and passive speed sensors. When paired with a backup protection module, it can be expanded to support an additional 2 channels of passive speed sensors, meeting the requirements for multi-source speed monitoring of turbines.
Channel and Feedback System
Channel Configuration: It features 4 independent servo control channels, and each channel supports up to 3 LVDT (Linear Variable Differential Transformer) or LVDR (Linear Variable Differential Resistor) feedback sensors.
Feedback Processing: Built-in software supports median, maximum and minimum value filtering of sensor signals. Hardware-level signal conditioning and fault diagnosis ensure the accuracy and anti-interference capability of position feedback.
Output Characteristics: It provides bidirectional servo current output, suitable for driving the positive and negative strokes of servo valves, and supports continuous closed-loop regulation of valve core position.
Redundancy and Reliability Design
TMR Compatibility: The 3-coil servo configuration is specifically designed for triple modular redundancy systems. Channel-level redundancy and cross-checking reduce the risk of single-point failures, meeting the SIL safety integrity level requirements for turbine control.
Diagnostics and Indications: The board is equipped with 3 LED indicators (Run/Fault/Status) that provide real-time feedback on the card’s operating status, facilitating online fault location and rapid maintenance.
Hardware Craftsmanship: Industrial-grade PCB design ensures adaptation to harsh industrial environments (vibration, temperature fluctuations, electromagnetic interference), complying with the anti-interference and EMC standards of the GE Mark VI system.
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