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GE IC3600ACLS1B Logic Module
GE IC3600ACLS1B
GE IC3600ACLS1B is an analog control logic module under the General Electric (GE) Mark I Speedtronic™ series, specifically designed for the control systems of early gas turbines and steam turbines. As one of the core components of the Mark I system, this module is responsible for analog signal processing, logic operations, and control output, enabling the regulation and protection of key parameters such as speed, temperature, and pressure.
Product Parameters
- Product Model: IC3600ACLS1B
- Manufacturer: General Electric (GE)
- Product Type: Analog Control Logic Module
- Compatible System: GE Mark I Speedtronic™
- Input Signal Type: Thermocouple (Type J/K), RTD (PT100), 4-20mA
- Output Signal Type: 4-20mA, 0-10V DC (for driving actuators)
- Operational Functions: PID regulation, comparator, integrator, delay circuit
- Accuracy: ±1% FS (typical, depending on external calibration)
- Operating Temperature Range: 0°C to +60°C (32°F to +140°F)
- Protection Class: IP20 (must be installed in a control cabinet)
- Installation Method: Inserted into the Mark I rack, connected via the backplane
- Power Requirement: ±15V DC (powered by the rack backplane)
- Power Consumption: ≤5W
- Certification Standard: Compliant with 1970s industrial standards (e.g., UL 508)
Key Features and Advantages
1. Reliability of Analog Circuits
- No software dependency, eliminating the risk of program crashes or system freezes in digital systems.
- Resistance to radiation and EMP interference, suitable for nuclear facilities or military applications (for some versions).
2. Real-Time Response
- The analog PID response time is ≤100ms, making it suitable for fast regulation loops (e.g., fuel control).
- Hardware comparators enable microsecond-level fault detection (e.g., overspeed protection).
3. Easy Maintenance
- Modular design, supporting hot-swap replacement (subject to system permission).
- On-site calibration via potentiometers, no programming tools required.
4. Compatibility
- Natively compatible with Mark I system racks (e.g., DS200 series).
- Can be interconnected with subsequent Mark II and Mark V systems via signal converters.
Application Fields
IC3600ACLS1B is mainly used in the following scenarios:
Legacy Generator Sets
- Control systems for gas turbines/steam turbines from the 1970s to 1980s (e.g., GE Frame 5).
Industrial Drives
- Analog control loops for large pumps and compressors.
Retrofit Projects
- Used as spare parts to extend the service life of aging systems until upgrading to digital systems.
Typical Application Case
In the Frame 5 gas turbine, IC3600ACLS1B processes thermocouple signals and generates 4-20mA output to control the fuel valve, maintaining the speed within the range of 5100 RPM ±1%.
Installation and Maintenance
Installation Key Points
- Perform operations with power off (Mark I systems usually do not support hot-swap).
- Use a precision voltage/current source to calibrate the zero point and range (once a year).
- Clean the gold finger contacts to prevent poor contact caused by oxidation.
Maintenance Recommendations
- Regularly check the capacity of electrolytic capacitors (capacitor aging may cause PID parameter drift).
- Keep backup modules of the same type for quick replacement in case of faults.
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