Description
The GE IS200TBTCH1B is a high-reliability Thermocouple Input Terminal Board designed for the Speedtronic Mark VIe control system. It serves as the physical interface for thermocouple sensors, supporting both cold junction compensation and signal conditioning for temperature monitoring in gas and steam turbine applications. The “B” revision indicates specific hardware enhancements for improved noise immunity and thermal stability.
- System Compatibility: GE Speedtronic Mark VIe Control Systems
- Input Channels: Supports up to 24 thermocouple inputs
- Thermocouple Types: Compatible with Type J, K, E, S, and T sensors
- Cold Junction Compensation: Includes two onboard cold junction reference thermistors
- Noise Suppression: Integrated high-frequency filtering on each input channel
- Redundancy: Supports Simplex, Dual, and TMR (Triple Modular Redundant) configurations
- Interface: Connects to I/O packs (such as the PTCH) via high-density D-type connectors
Product Datasheet
| Feature | Specification |
|---|---|
| Model | GE IS200TBTCH1B |
| System Series | Mark VIe Speedtronic |
| Dimensions | 330 x 178 x 70 mm |
| Weight | 1.15 kg |
| Country of Origin | USA |
| Operating Temp | -30°C to +65°C |
| Mounting | DIN-rail or Bolt-on Sheet Metal |
Application Fields
This terminal board is a critical component for thermal management and protection in heavy-duty industrial settings, including:
- Gas Turbine Exhaust Monitoring: Measuring exhaust gas temperature (EGT) for combustion control.
- Bearing Temperature Tracking: Monitoring critical bearing temperatures in large rotating machinery.
- Steam Turbine Supervision: Interfacing with thermocouples in various steam paths and casing locations.
- Generator Protection: Providing temperature data for stator winding and cooling system monitoring.
Product Instructions
- Mounting: Install the IS200TBTCH1B onto the internal cabinet mounting plate or DIN rail. Ensure there is sufficient clearance for the D-type connectors at the top.
- Field Wiring: Connect the thermocouple lead wires to the designated screw terminals. Ensure the polarity is correct (positive/negative) to avoid temperature reading errors.
- Grounding: Ensure the board’s metal base or grounding terminal is properly bonded to the system’s earth ground to minimize signal noise.
- I/O Pack Connection: Plug the PTCH (or compatible) I/O packs into the board’s headers. For redundant systems, ensure the packs are seated in the correct slots according to the control topology.
- Configuration: Use the ToolboxST application to configure the specific thermocouple types and scaling parameters for each of the 24 channels.
Q&A – Common Questions
Q1: What is the difference between the TBTCH1B and TBTCH1C? A1: Generally, the lettered suffix indicates the hardware revision. Revision C may include component updates or minor board layout changes. In most Mark VIe applications, these revisions are backward compatible, but verify the specific requirements in your system’s Control Sequence Program.
Q2: How does the board handle Cold Junction Compensation (CJC)? A2: The board features two thermistors that monitor the temperature of the terminal blocks where the thermocouple wires connect. This data is used by the associated I/O pack to calculate the actual temperature at the sensor tip.
Q3: Can I mix different thermocouple types on the same board? A3: Yes, the Mark VIe system allows for per-channel configuration. However, you must ensure that each channel is correctly assigned the proper thermocouple type in the software to ensure accurate linearization.
Related Product Recommendations
- GE IS230PTCHH1A | Thermocouple I/O Pack
- GE IS200TRLYH1B | Relay Output Terminal Board
- GE IS200TBAIH1C | Analog Input Terminal Board
- GE IS200VMEBG1A | VME Backplane Interface Board
- GE IS200TBTCH1C | Updated Thermocouple Terminal Board
