GE IC3600Q0XC4
Product Overview
The GE IC3600Q0XC4 is a critical component of GE’s Mark I & Mark II gas turbine control systems, belonging to the Speedtronic™ series as an analog signal conditioning module. It is primarily used for process variable monitoring in gas turbines/steam turbines (such as temperature, pressure, vibration, etc.), converting on-site sensor signals (thermocouples, RTDs, 4-20mA) into standard signals processable by control systems.
The IC3600Q0XC4 adopts high-precision signal conditioning circuits and isolation technology, ensuring stable operation in high-electromagnetic interference (EMI) environments in power plants. Its modular design supports hot-swap replacement, making it suitable for upgrading and maintaining older Mark I/Mark II systems.
Product Parameters
- Product Model: IC3600Q0XC4
- Manufacturer: GE Energy (Speedtronic™ series)
- Product Type: Analog signal conditioning module
- Input Signals: Thermocouples (Type K/J/E), RTDs (PT100), 4-20mA
- Output Signals: 0-10V DC or 4-20mA (configurable)
- Accuracy: ±0.1% F.S. (Full Scale)
- Isolation Voltage: 1500V AC (between channels/channel to ground)
- Operating Temperature: -20°C ~ +70°C
- Supply Voltage: 24V DC ±10% (via backplane)
- Power Consumption: 3W (maximum)
- Compatible Systems: GE Mark I / Mark II Speedtronic
- MTBF (Mean Time Between Failures): 200,000 hours (IEC 61709)
Structure and Composition
The IC3600Q0XC4 features a metal-shielded enclosure, with its internal structure divided into three parts:
Signal Input Layer
- Supports thermocouples (with cold junction compensation), RTDs (three-wire), and 4-20mA inputs; signal types are selected via jumpers.
- Built-in low-pass filtering and surge protection (TVS diodes).
Signal Conditioning Layer
- Equipped with high-precision instrumentation amplifiers (INA) and 16-bit ADC (Analog-to-Digital Converter) for signal linearization and digitization.
- Uses DC/DC isolated power supplies to prevent ground loop interference.
Output and Communication Layer
- Outputs 0-10V or 4-20mA standard signals, transmitted to the control system via the Mark I/Mark II backplane.
- Front-panel LED indicators display power/fault status.
Key Features and Advantages
- High-precision signal conversion: ±0.1% accuracy, suitable for critical parameter monitoring of gas turbines (e.g., exhaust temperature, bearing vibration).
- Wide input compatibility: Supports thermocouples, RTDs, current/voltage signals, reducing the variety of spare parts.
- Industrial-grade anti-interference: 1500V isolation + EMI filtering, passing IEEE 472 surge tests.
- Plug-and-play maintenance: Modular design supports on-line replacement (requires system shutdown).
- Long-term reliability: Uses military-grade components with an MTBF of 200,000 hours.
Application Fields
Gas Turbine Control
- Combustion chamber temperature monitoring (Type K thermocouple).
- Signal conditioning for lubricating oil pressure transmitters (4-20mA).
Steam Turbine Protection
- Processing of bearing vibration sensors (velocity/acceleration signals).
- Monitoring of condenser vacuum (RTD).
Power Plant Automation Transformation
- Signal upgrading for older Mark I/Mark II systems.
Installation and Maintenance
Pre-installation Preparation
- Ensure the system is powered off and use an anti-static wristband.
- Check that backplane slots are free of oxidation and that module jumper settings match the sensor type.
- Prepare shielded twisted-pair cables (e.g., Belden 8761) for analog signal transmission.
Maintenance Recommendations
- Perform calibration checks every 12 months (using a Fluke 744 process calibrator).
- Regularly clean the module’s heat dissipation holes to prevent overheating due to dust accumulation.
- Record jumper positions when replacing modules to ensure consistent configuration of the new module.
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