The General Electric IS200TBTCH1BBB is a high-performance thermocouple input terminal board designed for the Mark VI and Mark VIe Speedtronic control systems. This board serves as a critical interface for turbine control, facilitating the precise collection of temperature data from steam, gas, and wind turbine applications. Engineered for reliability, this unit supports complex control architectures, including Simplex, Dual, and Triple Modular Redundant (TMR) configurations.

Features

• Designed for Mark VI and Mark VIe Speedtronic turbine control systems.
• Supports 24 thermocouple input channels.
• Compatible with grounded or ungrounded thermocouple types.
• Features high-frequency noise suppression for signal integrity.
• Includes two Cold Junction (CJ) reference devices for accurate temperature measurement.
• Equipped with hardware ID devices for automatic verification by the I/O processor.
• Conformal coating applied to the PCB for enhanced environmental protection.

Applications

• Steam turbine temperature monitoring and control.
• Gas turbine exhaust over-temperature protection.
• Large-scale wind farm automation and monitoring.
• Oil and gas extraction and transportation equipment management.

Technical Specifications

Installation Guidelines

• Ensure the system is powered down before installing or removing the terminal board.
• Connect thermocouple wiring to the two removable I/O terminal blocks using up to #12 AWG wire.
• Secure terminal blocks to the board using the provided screws.
• Connect the shield terminal strip to the chassis ground to minimize EMI.
• In Mark VI systems, ensure proper cabling from the TBTCJ-type connectors to the I/O processors in the VME rack.
• Maintain a maximum cable distance of 300 meters (984 ft) with a maximum two-way resistance of 450 Ohms.
• Handle the PCB with standard ESD precautions to prevent damage to sensitive components.

FAQ

What is the primary function of the IS200TBTCH1BBB?

This board acts as a terminal interface for 24 thermocouple inputs, performing signal conditioning and passing data to the I/O processor for linearization and analog-to-digital conversion within the turbine control system.

Does this board support TMR configurations?

Yes, the IS200TBTCH1BBB is designed to support Simplex, Dual, and Triple Modular Redundant (TMR) setups, allowing signals to fan out to three separate I/O packs for high-availability operation.

How does the system handle hardware verification?

The board includes an onboard ID device that the I/O processor interrogates upon startup. If the board type or revision does not match the expected configuration, the system generates a hardware incompatibility fault.