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 of large rotating machinery such as gas turbines and steam turbines. This module drives electro-hydraulic servo valves (e.g., MOOG valves) through high-precision current output, enabling precise control of key 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: It offers an output accuracy of ±0.1%, meeting the mA-level driving requirements of servo valves.
• Real-Time Feedback: It has built-in sensor signal acquisition to achieve closed-loop control of valve positions.
• Redundancy and Fault Tolerance: It supports dual-module redundancy configuration, enhancing system reliability.

Product Parameters

• 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 signal)
• 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

• D/A Conversion Circuit: A 16-bit high-precision digital-to-analog converter that generates 4-20mA servo valve driving signals.
• LVDT/RVDT Conditioning Circuit: A demodulator that converts the AC signal of the sensor into DC position feedback (±10V).
• PID Control Unit: Calculates valve position deviation 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 that communicates with the Mark VIe backplane and receives commands from the controller.
• Status Indicator Lights: LEDs display output status and fault alarms (e.g., open circuit, short circuit).

Key Features and Advantages

1. High-Precision Servo Drive

• 16-bit resolution output ensures micron-level positioning accuracy of the servo valve.
• LVDT/RVDT feedback compensation eliminates the impact of temperature drift on valve position measurement.

2. Redundant Reliability

• Supports the Active-Standby mode, with a switching time ≤50ms.
• Faulty modules are automatically isolated without affecting system operation.

3. Intelligent Diagnostic Function

• Real-time monitoring of servo valve coil impedance (to detect wire breakage or short circuit).
• Records historical faults (e.g., number of overcurrent events) via the ToolboxST software.

4. Industrial-Grade Durability

• Wide operating temperature range of -30°C to +70°C, adapting to the environment of gas turbine control cabinets.
• Compliant with the IEC 60068 vibration standard (5g @ 100Hz).

Typical Application Case

Installation and Maintenance

Installation Key Points

• Operate under power-off conditions (or confirm that the system supports hot swapping).
• Use twisted shielded wires for servo valve coil wires, with the shield layer grounded at one end.
• The excitation frequency of LVDT/RVDT must be consistent with the module settings (usually 3kHz).

Maintenance Recommendations

• Check the consistency between the output current and the actual valve position monthly (calibrate with a multimeter).
• Regularly clean the module slot to prevent poor contact.

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