IS200TBTCH1CBB Thermocouple Input Terminal Board
IS200TBTCH1CBB is a high-density Thermocouple Input Terminal Board from GE Mark VIe series. It supports 24 channels for E, J, K, S, T types. This board directly interfaces with PTCC I/O packs in GE Distributed Turbine Control Systems. It ensures precise temperature measurement for gas and steam turbine applications. The design focuses on signal integrity and system reliability.
Technical Specifications
| Part Number | IS200TBTCH1CBB |
| Brand | General Electric |
| Series | Mark VIe / EX2100 |
| Type | Thermocouple Input Terminal Board |
| Channels | 24 |
| Thermocouple Types | E, J, K, S, T |
| Input Span | -8 mV to +45 mV |
| Operating Temp | 0 to +45 °C |
| Size | 15.9 cm x 17.8 cm |
| Country of Origin | United States |
| Manual | GEH-6421M |
Key Features & Functional Description
- 24 Input Channels for grounded or ungrounded thermocouples.
- Accepts E, J, K, S, T thermocouple types.
- Full-scale range from -8 mV to +45 mV.
- Includes high-frequency noise suppression for stable readings.
- Equipped with two cold junction reference devices.
- Supports simplex with two PTCC packs for 24 inputs.
- For TMR (TBTCH1B), supports three PTCC packs with 12 inputs per processor.
- Removable terminal blocks for #12 AWG wire.
- Shield terminal strips for chassis ground connection.
- J-type connectors interface with I/O packs for signal processing.
Installation & Maintenance
Thermocouples connect directly to two removable I/O terminal blocks. Each block uses two screws for secure mounting. The board accepts up to #12 AWG wires. A shield terminal strip on the left side reduces electrical noise. I/O packs connect via J-type connectors on the board. The board is coated with conformal coating for protection.
Diagnostic Capabilities
The board monitors cold junction (CJ) signals. The system uses the average of two CJ readings. A 1°F CJ error causes a 1°F reading error. Hard-coded CJ limits are -40 to 85°C. If a CJ faults, the system uses a backup value. The backup can be from other boards or a default setting. Three LEDs on the faceplate show status and fault conditions.
Thermocouple Limits & Compatibility
The input range supports diverse temperature measurements. The voltage output is proportional to the temperature difference. Cold junction reference range is -30°C to 65°C. The board is compatible with Mark VIe and EX2100 systems. It works with PTCC and VTCC I/O processors. It also supports Modicon Quantum systems via appropriate I/O packs.
Environmental & Reliability Data
- Operating Temperature: 0 to +45 °C
- CJ Reference Range: -30 to +65 °C
- Noise Suppression: High-frequency filtering
- Wire Size: Up to #12 AWG
- Two-way Cable Resistance: Max 450 ohms
- Distance: Up to 300 meters from panel
- Conformal Coating: PCB protection
Packaging & Warranty
The board ships in anti-static packaging. Each unit includes the terminal board only (cables and I/O packs sold separately). We provide a 12-month warranty against defects. We also offer repair services for faulty boards. Available options include unused, refurbished, and tested surplus boards.
Shipping Information
We ship globally via FedEx, UPS, and DHL. Tracking is provided for all orders. Expedited shipping is available upon request.
Typical Applications
- Gas turbine temperature monitoring
- Steam turbine control systems
- Excitation control systems (EX2100)
- Distributed control system (DCS) retrofits
- Industrial power generation plants
- Thermal monitoring in oil & gas
Frequently Asked Questions (FAQ)
What is the difference between TBTCH1C and TBTCH1B?
The TBTCH1C supports simplex with two DC connectors. The TBTCH1B supports TMR with six DC connectors.
How many inputs does the TBTCH1B support in TMR?
In TMR, the TBTCH1B supports 12 inputs per I/O pack.
Can I use this board with Modicon Quantum?
Yes, with appropriate interfacing I/O packs.
What happens if a cold junction fails?
The system uses a backup value from another board or a default value.
What wire size does the terminal block accept?
It accepts up to #12 AWG wires.
Why Buy From Oiltech Controls?
We have over 15 years of experience in industrial automation spare parts. Our team offers global shipment support with reliable logistics partners. We provide tested industrial surplus and refurbished options. Each unit undergoes technical verification before shipment to ensure performance. We specialize in supporting obsolete control systems to extend your equipment life. Our 12-month warranty gives you confidence in your purchase. For inquiries, contact us at info@oiltechcontrols.com or +86 158 8020 0923.
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