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GE IS210WSVOH1AE servo valve control module
GE IS210WSVOH1AE
The GE IS210WSVOH1AE is a servo valve control module under the General Electric (GE) Mark VIe Speedtronic™ series. It is specifically designed for hydraulic actuators in large rotating machinery such as gas turbines and steam turbines. This module drives electro-hydraulic servo valves (e.g., MOOG valves) via high-precision current output, enabling precise control of critical actuators like fuel valves and guide vane angles. This ensures the stability and response speed of the unit under rapid load changes.
Core Values of IS210WSVOH1AE
- High-Precision Control: Features ±0.1% output accuracy, meeting the mA-level driving requirements of servo valves.
- Real-Time Feedback: Integrates sensor signal acquisition to achieve closed-loop control of valve positions.
- Redundancy and Fault Tolerance: Supports dual-module redundancy configuration to enhance system reliability.
Product Specifications
- Product Model: IS210WSVOH1AE
- Manufacturer: General Electric (GE)
- Product Type: Servo Valve Control Module
- Compatible System: GE Mark VIe Turbine Control Platform
- Output Channels: 2 channels (independent or redundant mode)
- Output Signal: 4-20mA (for driving servo valve coils)
- Output Accuracy: ±0.1% FS
- Load Capacity: ≤500Ω (per channel)
- Feedback Input: LVDT/RVDT (valve position sensor signals)
- Communication Interface: Interacts with the controller via the Mark VIe backplane
- Operating Temperature Range: -30°C to +70°C (-22°F to +158°F)
- Protection Class: IP20 (must be installed in a control cabinet)
- Installation Method: Inserted into the Mark VIe rack, occupying 1 slot
- Power Requirement: +24V DC (powered by the backplane)
- Certification Standards: IEC 60068, UL 508
Structure and Composition
The IS210WSVOH1AE adopts a modular design, with key components including:
- D/A Conversion Circuit: Equipped with a 16-bit high-precision digital-to-analog converter to generate 4-20mA servo valve driving signals.
- LVDT/RVDT Conditioning Circuit: A demodulator converts the sensor’s AC signal into DC position feedback (±10V).
- PID Control Unit: Calculates valve position deviations in real time and adjusts the output current (adjustment cycle ≤1ms).
- Redundancy Management Logic: Monitors the health status between dual modules and automatically switches faulty channels.
- Backplane Interface: A high-speed connector communicates with the Mark VIe backplane to receive controller commands.
- Status Indicator Lights: LEDs display output status and fault alarms (e.g., open circuit, short circuit).
Key Features and Advantages
-
High-Precision Servo Driving
- 16-bit resolution output ensures micron-level positioning accuracy of servo valves.
- LVDT/RVDT feedback compensation eliminates the impact of temperature drift on valve position measurement.
-
Redundant Reliability
- Supports Active-Standby mode, with a switching time ≤50ms.
- Automatically isolates faulty modules without affecting system operation.
-
Intelligent Diagnostic Function
- Real-time monitors the impedance of servo valve coils (to detect wire breaks or short circuits).
- Records historical faults (e.g., overcurrent count) via ToolboxST software.
-
Industrial-Grade Durability
- Wide operating temperature range of -30°C to +70°C, adapting to the environment of gas turbine control cabinets.
- Complies with the IEC 60068 vibration standard (5g @ 100Hz).
Typical Application Case
In gas turbines, the IS210WSVOH1AE drives the MOOG J761 servo valve. It adjusts fuel flow in real time based on speed deviations to maintain the rated speed of 3000 RPM.
Installation and Maintenance
Installation Key Points
- Perform operations with power off (or confirm the system supports hot swapping).
- Use twisted shielded wires for servo valve coil wires, with the shield grounded at one end.
- Ensure the LVDT/RVDT excitation frequency matches the module settings (usually 3kHz).
Maintenance Recommendations
- Monthly check the consistency between the output current and the actual valve position (calibrate with a multimeter).
- Regularly clean the module slot to prevent poor contact.
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