Product Overview

The GE IS200STTCH2ABA is a high-performance Thermocouple Terminal Board used within the Mark VIe control system. This board is specifically designed to interface with thermocouple sensors, providing cold junction compensation (CJC) and serving as a key component in temperature monitoring for turbine control.

It is intended for Simplex applications, supporting up to 12 thermocouple inputs. The IS200STTCH2ABA is designed to be used with the IS220PTCC I/O Pack, which digitizes the thermocouple signals and communicates the data to the Mark VIe controller via Ethernet.

Key Technical Specifications

1. Signal & Input Capacity
   The IS200STTCH2ABA provides excellent input capabilities for industrial temperature monitoring:

• Channels: Supports up to 12 thermocouple inputs per terminal board.

• Thermocouple Types Supported: Includes Type E, J, K, S, and T thermocouples, as well as millivolt (±100 mV) inputs for additional flexibility.

• Cold Junction Compensation (CJC): Features two on-board thermistors that ensure accurate temperature readings by compensating for the ambient temperature at the terminal block.

2. Physical & Mechanical Specifications

• Connection Type: Features two fixed terminal blocks, each supporting 24 terminals, which can accept wire sizes ranging from AWG #18 to #14.

• Mounting: Designed for vertical mounting in a Mark VIe cabinet or on a DIN-rail for easy installation in industrial environments.

• I/O Pack Compatibility: The IS200STTCH2ABA is designed to work seamlessly with the IS220PTCC I/O pack via a 37-pin D-type connector.

3. Hardware Features

• Simplex Configuration: Ideal for Simplex setups, this terminal board supports one I/O pack for applications where redundancy is not required. For Triple Modular Redundancy (TMR) systems, a different terminal board, such as the IS200TBTCH, would typically be used.

• Noise Suppression: The board integrates high-frequency decoupling and surge protection for each input channel to prevent interference and ensure accurate signal processing.

• ID Chip: The IS200STTCH2ABA includes a Board ID serial EEPROM, allowing the I/O pack to automatically identify the board type and revision, simplifying installation and configuration.

System Architecture Comparison

Environmental Specifications

The IS200STTCH2ABA is built to endure challenging industrial environments with the following environmental limits:

• Operating Temperature: -30°C to +65°C (—22°F to +149°F) for reliable performance in a wide range of conditions.

• Storage Temperature: -40°C to +85°C to accommodate temperature fluctuations during shipping or long-term storage.

• Relative Humidity: Operates within 5% to 95% non-condensing humidity levels.

• Pollution Degree: Rated for Pollution Degree 2, suitable for standard industrial indoor environments.

Applications

The IS200STTCH2ABA is ideal for applications requiring reliable temperature measurement and control, particularly in power generation and turbine systems. This terminal board plays a critical role in:

• Turbine Control: Provides accurate temperature feedback from thermocouples to help manage the operation of steam and gas turbines.

• Industrial Process Control: Used in environments requiring precise temperature data for machinery and equipment protection.

• Temperature Monitoring: Ideal for systems that need to monitor high-temperature processes for safety and efficiency.

FAQ

Q: What is the maximum number of thermocouple inputs supported by the IS200STTCH2ABA?
A: The IS200STTCH2ABA supports up to 12 thermocouple inputs, allowing for comprehensive temperature monitoring in industrial systems.

Q: How does cold junction compensation (CJC) work on this board?
A: The IS200STTCH2ABA has two on-board thermistors that automatically compensate for ambient temperature fluctuations, ensuring accurate thermocouple readings.

Q: What types of thermocouples can the IS200STTCH2ABA handle?
A: The board supports common thermocouple types including Type E, J, K, S, T, and millivolt inputs for custom signal ranges (±100 mV).

Q: Can the IS200STTCH2ABA be used in redundant systems?
A: While the IS200STTCH2ABA is designed for Simplex configurations, it is not suited for Triple Modular Redundancy (TMR) systems. For redundancy, consider using the IS200TBTCH terminal board instead.