GE IS200TDBTH6ABC Discrete I/O Terminal Board Mark VI in stock
GE IS200TDBTH6ABC is a simplex discrete I/O terminal board developed for GE Mark VI Speedtronic turbine control system. It serves as the field signal interface for 125VDC industrial circuits, collecting digital input signals and driving relay outputs for turbine auxiliary control loops.
This board adopts 24 isolated digital input channels and 12 Form-C relay output channels with dual 48-pin terminal connectors. It is legacy spare part, widely used for maintenance replacement of old gas and steam turbine control racks in power plants.
Main Specifications
| Item | Parameter |
| [1] Brand | GE General Electric |
| [2] Model | IS200TDBTH6ABC |
| [3] Product Type | Simplex Discrete I/O Terminal Board |
| [4] Series | Mark VI Speedtronic Turbine Control System |
| [5] Input Channels | 24 Isolated Digital Inputs |
| [6] Output Channels | 12 Form-C Relay Outputs |
| [7] Rated Circuit Voltage | 125V DC |
| [8] Terminal Connector | Dual 48-pin terminal blocks (TB1/TB2) |
| [9] Operating Temp | -20℃ ~ +60℃ |
| [10] Mounting | Rack-mounted inside Mark VI control cabinet |
Core Functions
| Function | Description |
| [1] Digital Signal Acquisition | Collect on/off discrete status signals from field switches and sensors. |
| [2] Relay Contact Output Drive | Form-C relay outputs to actuate valves, contactors and auxiliary field devices. |
| [3] Channel Isolation Protection | Galvanic isolation for each input channel to suppress electrical interference. |
| [4] Field Signal Interface | Bridge field wiring and Mark VI main controller via backplane bus communication. |
| [5] Circuit Status Monitoring | Detect wiring faults and report board status to the turbine control processor. |
Application Scenarios
| Industry | Usage |
| [1] Power Generation | Gas & steam turbine auxiliary control in combined cycle power plants. |
| [2] Petrochemical | Turbine-driven compressor auxiliary logic control in refineries. |
| [3] Energy Utilities | Turbine auxiliary pump, fan and valve sequence control systems. |
| [4] Legacy System Maintenance | Spare replacement for aging Mark VI Speedtronic turbine control racks. |
FAQ
| Question | Answer |
| [1] What is GE IS200TDBTH6ABC? | It is simplex discrete I/O terminal board for GE Mark VI Speedtronic turbine control system. |
| [2] How many I/O channels does it have? | 24 isolated digital inputs and 12 Form-C relay output channels. |
| [3] What voltage circuit it supports? | It is designed for 125VDC industrial discrete control circuits. |
| [4] Is it obsolete spare part? | Yes, it is legacy spare for maintenance of existing Mark VI turbine control racks. |
