GE IS200TBCIH1BBC

1. Overview

The GE IS200TBCIH1BBCs a Terminal Board (TBCI) designed for use in GE Mark VI and Mark VIe control systems, primarily serving as an interface for analog input (AI) signal processing. It connects field devices such as transmitters and sensors to the control modules, ensuring accurate data acquisition and reliable signal integrity in critical turbine and process automation applications.

This board is an enhanced version of the TBCI series, providing robust isolation, shielded connections, and optimized noise suppression—all essential for maintaining precise analog measurements in harsh industrial environments.

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2. Technical Specifications

The IS200TBCIH1BBC supports up to 10 analog input channels, each capable of handling 4–20 mA or 1–5 V signal ranges, depending on the connected transducer type. The board includes built-in signal filtering and cold junction compensation for thermocouple inputs when used in temperature monitoring applications.

It interfaces with I/O packs such as IS220PAICH1A via DC-37 pin connectors and provides terminal screw points for easy field wiring. The inputs are galvanically isolated from system ground to eliminate ground loops and enhance measurement stability.

The board operates within a temperature range of –30°C to +65°C, using industrial-grade components for long-term durability. It is powered through the Mark VI control system backplane and does not require a separate power supply.

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3. Structure and Components

• Field Terminal Blocks: Screw-type terminals for connecting external sensors or transmitters.

• Connector Interface: A 37-pin DC connector links to the corresponding I/O pack (PAIC).

• Signal Conditioning Circuits: Include RC filters and surge protection components.

• Cold Junction Compensation (CJC): For thermocouple signal correction.

• Mounting Plate: Allows quick installation in control panel assemblies.

• Identification Labeling: Each channel and terminal point is clearly marked for easy wiring verification.

The TBCIH1BBC version includes enhanced EMI/RFI shielding and component-level improvements for better signal accuracy compared to earlier revisions.

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4. Key Features

• Supports up to 10 analog input channels per board

• Compatible with 4–20 mA and voltage input signals

• Built-in cold junction compensation for temperature sensors

• Galvanic isolation to prevent interference and ground loops

• Integrated signal filtering and surge protection

• High accuracy and stable long-term performance

• Direct interface with GE Mark VI/VIe I/O packs

• Compact design for easy installation and serviceability

• Designed for operation in industrial and high-vibration environments

  
  

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5. Application Fields

The GE IS200TBCIH1BBC is widely utilized in:

• Gas and steam turbine control systems

• Power generation plants and substations

• Oil and gas monitoring and metering systems

• Industrial process automation and control

• Chemical, paper, and water treatment industries

• Any system requiring accurate analog signal measurement

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6. Installation and Maintenance

1. Mounting: Secure the board onto the control cabinet or panel using approved hardware.

2. Wiring: Connect field devices (transmitters, sensors, etc.) to the screw terminals, ensuring correct polarity and shielding.

3. Connection to I/O Pack: Attach the IS220PAICH1A or compatible analog I/O pack via the DC-37 connector.

4. Grounding: Connect shielding to designated ground points to reduce interference.

5. Testing: Verify all channels through system diagnostics in ToolboxST.

6. Maintenance: Periodically check terminal tightness and inspect for corrosion or damage.

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7. Advantages and Reliability

The GE IS200TBCIH1BBC provides exceptional reliability, precision, and ease of integration within the GE Mark VI/VIe ecosystem. Its combination of robust isolation, advanced filtering, and industrial-grade design ensures consistent performance even under harsh operating conditions. This makes it a preferred choice for engineers seeking dependable analog input signal handling in turbine and process control systems.