The GE IS200VTCCH1C, also cataloged as the IS200VTCC Thermocouple Card, operates as a dedicated hardware component for high-precision thermocouple signal conditioning and cold junction compensation (CJC) within Mark VI turbine control systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IS200VTCCH1C |
| Brand | GE |
| Origin | USA |
| Weight | 0.85 kg |
| Dimensions | Standard Mark VI board form factor |
| Operating Temp | -20 deg C to 70 deg C |
| Power Consumption | 24 VDC nominal |
| Input Types | Thermocouples (J, K, T, E, etc.) |
Firmware and Backplane Communication
The IS200VTCCH1C facilitates deterministic data acquisition by interfacing directly with the Mark VI I/O processor via the backplane bus. The module manages backplane bus communication velocity to ensure high-fidelity thermocouple signal transmission, which is critical for real-time turbine exhaust temperature monitoring. Firmware flash compatibility is strictly governed by the I/O pack configuration, requiring the card to remain synchronized with the primary controller's diagnostic suite. I/O density scaling is supported through the board’s multi-channel architecture, allowing for efficient aggregation of thermal data from various turbine sections.
Frequently Asked Questions
Q: Does this card require manual calibration for different thermocouple types?
A: No, the card is software-configurable. The specific thermocouple type (J, K, T, E) is defined in the Mark VI controller configuration software, which applies the appropriate linearization and compensation curves to the raw input data.
Q: How is cold junction compensation handled by this module?
A: The board features integrated CJC sensors located at the termination points. These sensors provide an ambient temperature reference to the I/O pack, allowing the controller to calculate the compensated temperature value precisely.
Field Installation Guidelines
- Ensure the Mark VI cabinet is de-energized and zero-energy verified before installing the card.
- Use only the recommended thermocouple extension wire for field connections to prevent the introduction of unintended dissimilar metal junctions.
- Ensure the card is fully seated in the rack to guarantee proper backplane contact and minimize impedance in the low-level signal paths.
- Ground the module to the cabinet chassis through the provided mounting points to ensure effective electromagnetic interference shielding.
- Verify thermocouple loop integrity by checking for open circuits or short-to-ground conditions using a digital multimeter before initializing the control loop in the software.
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| Warranty | 12 Months |
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