Overview
Configured for converting resistance temperature signals into digital temperature values in the Mark VI control system, the General Electric IS200VRTDH1D (IS200VRTD RTD Input Board) provides direct physical and electrical execution. The board processes 16 three-wire RTD input channels, excites the connected RTDs, converts the returned signals through 14-bit A/D conversion, and transfers temperature data through the VME architecture.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IS200VRTDH1D |
| Base Model | IS200VRTD |
| Brand | General Electric |
| Series | Mark VI |
| Product Type | RTD Input Board |
| Function | Converts RTD input signals to digital temperature values |
| RTD Input Configuration | 16 three-wire RTD inputs |
| Number of Channels | 16 channels per RTD board |
| A/D Converter Resolution | 14-bit |
| RTD Excitation | Generated by the VRTD board |
| Terminal Board Connection | TRTD or DRTD RTD terminal board |
| Rack Interface | VME rack |
| Data Path | VRTD to VCMI through VME backplane |
| Power Consumption | Less than 12 W |
| Origin | USA |
| Availability | In Stock |
VME Backplane Communication and I/O Processing
The IS200VRTDH1D operates within the GE Mark VI VME-based hardware architecture. First, the board provides excitation to the connected RTDs through the associated TRTD or DRTD terminal board. The resulting resistance-related signals then return to the VRTD board for analog-to-digital conversion.
The board processes up to 16 RTD channels with 14-bit A/D resolution. It converts the measured input signals into digital temperature values and transfers the resulting data through the VME backplane communication path. The VCMI interface subsequently supports data communication between the VME hardware and the controller.
This architecture supports centralized I/O density scaling by allowing the RTD board, terminal board, VCMI interface, and controller to operate through defined rack and backplane connections. Therefore, installation requires correct seating of the board edge connectors and proper connection of the associated terminal board cables.
Frequently Asked Questions
Q: How many RTD inputs does the IS200VRTDH1D support?
A: The IS200VRTDH1D supports 16 three-wire RTD input channels per board.
Q: What is the A/D conversion resolution of the IS200VRTDH1D?
A: The board uses 14-bit A/D conversion for processing the RTD input signals.
Q: How does the IS200VRTDH1D communicate temperature data with the controller?
A: The board converts RTD signals into digital temperature values. The data then passes through the VME architecture and VCMI communication interface to the controller.
Field Installation Guidelines
- Turn off power to the VME processor rack before installing or removing the board.
- Verify that the associated TRTD or DRTD terminal board and connecting cables match the installed RTD hardware configuration.
- Align the board carefully with the VME rack guides before insertion.
- Use the top and bottom levers to press the board fully into the edge connectors.
- Tighten the captive screws on the upper and lower sections of the front panel after seating the board.
- Route RTD signal wiring separately from high-power conductors to reduce electrical interference.
- Follow the system grounding and cable shielding requirements defined for the Mark VI installation.
- Do not apply excessive force to the board, connectors, or molded cable fittings during installation.
