The GE IS200VRTDH1DAB, also cataloged as the VRTD Resistance Temperature Device card, excites RTDs and converts their signals into digital temperature values for transfer across the VME backplane to the VCMI and controller.
Hardware Specifications
Manufacturer: General Electric
Series: Mark VIe Speedtronic
Part Number: IS200VRTDH1DAB
Functional Acronym: VRTD
Assembly Style: Normal Assembly
Revision Quantity: 3 revisions
Backwards-Compatibility: First two revisions supported
I/O Density Scaling
The IS200VRTDH1DAB integrates RTD excitation and signal conversion with deterministic scanning cycles. Out-of-range RTDs (short or open circuits) are automatically removed from scanned inputs to prevent interference with other channels. These channels are reinstated manually or automatically every twenty seconds if signals return within range.
Frequently Asked Questions
Q: How does the IS200VRTDH1DAB handle faulty RTDs? A: Out-of-range RTDs are excluded from scanned inputs and reinstated automatically every twenty seconds if they return within hardware limits.
Q: What communication path is used for digital values? A: Converted temperature values are transferred via the VME backplane to the VCMI and controller.
Q: Is the card backward compatible? A: Yes. The first two revisions are backward compatible with earlier system configurations.
Field Installation Guidelines
Ensure proper seating in the VME rack slot with full connector engagement.
Maintain shielded cable grounding at a single point to suppress EMI.
Route RTD wiring separately from high-voltage lines to minimize interference.
Verify revision compatibility before installation.
Observe standard Mark VIe Speedtronic installation practices for thermal sensor wiring.
