The IS200TDBTH6ACD is a high-reliability Terminal Board manufactured by GE Fanuc for the Mark VI / Mark VIe control systems. As a critical interface component, this board is primarily used to facilitate field wiring connections, signal conditioning, and power distribution for turbine control and protection systems. Its robust construction is designed to withstand the rigorous demands of power generation and large-scale industrial control environments.
Product Specifications
| Feature | Details |
| Model Number | IS200TDBTH6ACD |
| Series | Mark VI / Mark VIe |
| Device Type | Terminal Board (TDBT) |
| Primary Function | Field wiring termination and signal routing |
| Compatibility | GE Mark VI/VIe turbine control systems |
| Weight | Approximately 0.6 kg – 0.9 kg |
| Country of Origin | USA |
Application Fields
This terminal board is an essential part of the GE control ecosystem, deployed in various high-availability applications:
- Gas & Steam Turbines: Serving as the I/O interface for turbine control, monitoring, and protection sensors.
- Control Cabinet Infrastructure: Enabling organized signal routing between field-side sensors/actuators and the main control processor boards.
- Power Plant Automation: Providing a reliable bridge for complex instrumentation arrays in large-scale energy infrastructure.
- Redundant Control Systems: Supporting the signal integrity required for mission-critical turbine management.
Product Usage Instructions
Installation and maintenance of this board should be performed by qualified personnel familiar with GE Mark VIe architecture.
- Safety: Ensure the control cabinet is de-energized before handling the board. Always use appropriate Electrostatic Discharge (ESD) protective measures.
- Mounting: Secure the TDBT board onto the standard cabinet rails or backplane. Ensure it is firmly seated to maintain reliable connectivity.
- Wiring: Carefully label all field wires before disconnecting them from a faulty unit. Connect wires to the designated terminal points as indicated by the cabinet wiring diagrams. Tighten terminal screws to the manufacturer-specified torque to ensure low-resistance connections.
- Verification: After installation, perform a continuity check on signal paths. Use the ControlST software to verify that the signals reaching the I/O packs are stable and within expected operational ranges.
Frequently Asked Questions
Q: What is the purpose of the TDBT board series?
A: The TDBT boards are designed to simplify the connection between field devices and the Mark VIe I/O packs. They provide the necessary terminal density and physical space to manage large numbers of field wires in a centralized control cabinet.
Q: How does the “H6ACD” suffix affect compatibility?
A: The suffix denotes the board version and revision level. While boards with similar base model numbers may seem identical, it is crucial to use the exact revision (H6ACD) specified in your system’s bill of materials (BOM) to ensure full compatibility with the associated I/O packs and firmware.
Q: Is this board field-repairable if a terminal block breaks?
A: It is generally recommended to replace the entire board if terminal blocks or PCB traces are damaged. Field repairs on these boards can compromise system reliability and may void technical compliance for safety-critical turbine control.
Q: What should I check if a signal is not appearing in the DCS?
A: First, check the physical connection at the TDBT terminal point. If the wiring is secure, use a multimeter to verify the signal voltage at the terminal. If the signal is present at the terminal but not reaching the I/O pack, inspect the board for any physical damage or loose backplane connectors.
