GE Mark VI IS200TBCIS2C IS200TBCIS2CCD Contact Input Board

Product Description

The IS200TBCIS2C (incorporating revision IS200TBCIS2CCD) is a high-performance Contact Input Termination Board (TBCI) engineered specifically for the GE Speedtronic Mark VI and Mark VIe turbine control systems. This board serves as the critical physical interface between field-level discrete sensors or thermocouples and the control architecture, providing robust signal conditioning and electrical isolation required in power generation environments.

As a versatile I/O module, the IS200TBCIS2C supports 16 channels that can be configured for either dry contact discrete inputs or thermocouple signals. The board features dual-input capability, allowing it to feed signals to multiple controllers for redundancy, ensuring high availability of the turbine system.

Technical Specifications

• Module Part Number: IS200TBCIS2C / IS200TBCIS2CCD

• Control System: Mark VI / Mark VIe Speedtronic

• Input Capacity: 16 Channels (Discrete or Thermocouple)

• Thermocouple Support: Types J, K, T, E, R, S, B, N (Software Configurable)

• CJC (Cold Junction Compensation): Integrated digital sensor with ±0.3 °C accuracy

• Signal Range: ±50 mV for thermocouple outputs

• Isolation Voltage: 500 VDC (compliant with IEC 61010 standards)

• Common Mode Rejection: ≥100 dB @ 50/60 Hz

• Sampling Rate: 10 Hz per channel for high-resolution monitoring

• Physical Dimensions: 263 mm x 138 mm x 88 mm

• Weight: 2.35 kg

• Operating Temperature: 0 °C to +60 °C (32 °F to 140 °F)

• Mean Time Between Failure (MTBF): >160,000 Hours

Application & System Integration

The IS200TBCIS2C is typically mounted in an I/O rack and connects directly to the VCMI or I/O pack via a VME64 bus or specialized cabling. It is optimized for heavy-duty industrial turbine control, such as gas or steam turbine monitoring where signal integrity is non-negotiable. Its ability to handle multiple thermocouple types without hardware changes makes it a flexible solution for retrofitting older Mark VI systems or expanding Mark VIe networks.

Frequently Asked Questions

Does the IS200TBCIS2C support redundant I/O configurations?

Yes, the board is designed with terminal blocks that allow signals to be fanned out to multiple I/O packs, supporting the Triple Modular Redundant (TMR) architecture common in GE Mark VI systems.

Is there a difference between the IS200TBCIS2C and the IS200TBCIS1C?

The IS200TBCIS2C variant is specifically enhanced for both discrete contact inputs and thermocouple signals, whereas the S1C variant may have different jumper configurations or signal limitations depending on the specific hardware revision.