Description
The General Electric DS200TCCBG3B (also known with revision suffixes like DS200TCCBG3BED) is a specialized printed circuit board engineered for the Speedtronic Mark V turbine control system. Identified functionally as the TCCB card, its primary role is to serve as a common extended analog input/output board that provides signal scaling, conditioning, and processing for complex turbine drive architectures. It handles critical monitoring parameters such as line currents, RTDs, generator voltages, and bus voltages.
📊 Technical Specifications
- Brand: General Electric (GE)
- Model: DS200TCCBG3B / DS200TCCBG3BED
- Series: Mark V Turbine Control System
- Product Name: Common Extended Analog I/O Board (TCCB)
- Manufacturing Status: Legacy / Mature Industrial Spare Part
- Dimensions: Standard Mark V modular board profile
- Weight: Approx. 0.4 kg to 0.6 kg
- Country of Origin: United States
- Power Requirements: Powered internally via system rack backplane / core power distribution modules
- Core Processing: Equipped with an onboard 80196 microprocessor and PROM modules
🛠️ Operation Guidelines & Installation
Installation and replacement must be performed strictly by qualified control system technicians. Always ensure that power to the specific rack enclosure is completely de-energized before handling the PCB to prevent electrostatic discharge (ESD) or electrical hazards. Use an anti-static wrist strap, carefully align the board with the designated backplane guides, and secure it firmly. Verify that all hardware jumpers (such as those configured for generator and bus voltage selections) are correctly set according to your specific site requirements before startup.
🔌 Power-Up and Power-Down Sequence
Prior to energizing the system, verify that all internal ribbon cables, 50-pin connectors (such as JCC and JDD), and terminal wiring are securely seated. Apply system control power to initiate the board’s internal processor and diagnostic checks. Observe the onboard green status LED visible from the side or cabinet view to confirm normal power input and processing activity. For system shutdown, de-energize external field loops and power feeds first before cutting power to the main control rack housing.
📝 Product Usage Instructions
This board processes analog feedback signals (such as 4-20 mA inputs, RTDs, and PT/CT current signals) to compute vital operational metrics like generator megawatts, power factor, and VARs. System configuration constants are entered using the HMI’s I/O Configuration Editor software. Keep the control cabinet environment clean, dry, and free from excessive dust or moisture, relying on the board’s protective PCB coating for standard industrial durability.
❓ Common Questions (Q&A)
Q: What does it mean if the onboard green LED is unlit during operation?
A: A dark LED indicates that the board is either not receiving proper power or is failing to process instructions. Check system power rails and review drive diagnostic software tools for fault logs.
Q: How are software parameters configured for this board?
A: Parameters and configuration constants for RTDs, mA inputs, and generator/bus voltage settings are managed through the HMI software configuration utility.
Q: Does this board require routine physical calibration?
A: Because it acts as an advanced digital analog processing and extension module, routine manual hardware calibration is typically unnecessary, though firmware and configuration settings must match the installed plant layout.
🚀 Recommended Related Models
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- GE DS200PCCAG1ACC (Power Supply Distribution Board)
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