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GE IS200TBCIS2CCD

GE IS200TBCIS2CCD Contact Input Terminal Board – Mark VI Turbine Control

The GE IS200TBCIS2CCD Contact Input Terminal Board (TBCI) is a key I/O interface module designed for the GE Mark VI Speedtronic turbine control system. Manufactured by General Electric, this board provides safe and reliable termination of field dry contact signals and distributes them to the turbine control racks.

This module is widely used in gas turbines, steam turbines, and industrial rotating equipment where dependable discrete input monitoring is essential for safe operation.

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Product Overview

Model: IS200TBCIS2CCD
Series: Mark VI Speedtronic
Function: Contact Input Terminal Board (TBCI)
Application: Turbine & industrial automation control
Origin: USA

The IS200TBCIS2CCD acts as the interface between field devices and the Mark VI control system, ensuring signal integrity, isolation, and noise protection in demanding industrial environments.

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Key Features

24 Isolated Dry Contact Inputs

The board accepts 24 discrete contact inputs from field devices such as:

• Limit switches
• Pressure switches
• Emergency stop circuits
• Relay contacts
• Protection interlocks

Each input channel includes optical isolation, improving system reliability and protecting control electronics from electrical disturbances.

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High-Reliability Signal Isolation

Industrial turbine environments are electrically noisy. This board includes:

• Optical isolation per input channel
• Noise filtering and surge protection
• Floating excitation from turbine control power

These features ensure stable signal transmission even in high-vibration and high-EMI environments.

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Multi-Rack Signal Distribution

The IS200TBCIS2CCD distributes input signals to the Mark VI control racks through:

• JR1 connector
• JS1 connector
• JT1 connector

These interfaces connect directly to VME I/O processors, enabling redundant and reliable signal routing.

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Maintenance-Friendly Terminal Design

The board is designed for easy installation and maintenance:

• Two removable terminal blocks (TB1 & TB2)
• Supports heavy-duty field wiring (up to #12 AWG)
• Simplifies troubleshooting and replacement

This reduces downtime and improves serviceability in power plant environments.

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Industrial-Grade PCB Protection

To ensure long service life, the board includes:

• Conformal coating protection
• Resistance to humidity, dust, and vibration
• Designed for harsh industrial conditions

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Technical Specifications

Parameter	Specification
Input Type	Dry contact inputs
Number of Channels	24
Isolation Method	Optical isolation per channel
Excitation Voltage	125 VDC nominal (100–145 VDC range)
Connectors	3 × 37-pin D-sub
Terminal Blocks	2 removable blocks
System Compatibility	GE Mark VI Speedtronic
Board Coating	Conformal coated

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Typical Applications

The IS200TBCIS2CCD is commonly deployed in:

• Gas turbine control systems
• Steam turbine control systems
• Power generation plants
• Oil & gas compressor stations
• Industrial process protection systems

It plays a vital role in safety interlocking, monitoring, and turbine protection.

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Why Choose IS200TBCIS2CCD?

• Designed specifically for Mark VI turbine control architecture
• Reliable isolation for critical safety signals
• Rugged design for industrial environments
• Easy installation and maintenance
• Trusted GE engineering and long lifecycle support

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Conclusion

The GE IS200TBCIS2CCD is an essential discrete input interface module in the Mark VI control platform. By providing secure termination, isolation, and distribution of field contact signals, it helps ensure safe, stable, and efficient turbine operation across a wide range of industrial and power generation applications.