The GE IS200VRTDH1DAB, also cataloged as the IS200VRTD VME Resistance Temperature Detector Card, operates as a dedicated hardware component for exciting Resistance Temperature Devices and capturing temperature signals within GE Mark VI platforms. The board conditions field RTD inputs, digitizes the signals into temperature values, and transmits them across the VME backplane to the VCMI module and system controller.
Suffix Breakdown & Model Matrix
| Suffix Component | Functional / Hardware Variant Definition |
|---|---|
| IS200 | Standard base circuit board assembly designator |
| VRTD | VME Resistance Temperature Detector card functional acronym |
| H1 | Conformal PCB coating configuration level 1 |
| DAB | Revision matrix (D: functional revision, A: artwork iteration, B: component assembly index) |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IS200VRTDH1DAB |
| Brand | General Electric |
| Origin | USA |
| Weight | 0.8 kg |
| Dimensions | Standard 6U VME Form Factor |
| Operating Temp | -30 to +65 deg C |
| Power Consumption | 12 W (VME backplane power bus) |
| Board Type | RTD Input VME Card |
| Channel Diagnostics | Open-circuit and short-circuit fault detection |
| Auto-Reinstatement | Automatic scan recovery every 20 seconds |
| Circuit Board Coating | Conformal coating |
| System Platform | Mark VI Speedtronic Control System |
Deterministic Network Integration and Backplane Processing
The IS200VRTDH1DAB maintains high backplane bus communication velocity to route digitized RTD temperature values directly to the VCMI bus master. Integrated firmware flash compatibility ensures real-time scanning without backplane bus contention. Out-of-range sensor values are isolated automatically to prevent scan degradation on adjacent channels, preserving system-wide I/O density scaling and scan synchronization across redundant controller configurations.
Frequently Asked Questions
Q: How does the IS200VRTDH1DAB handle faulty or disconnected RTD sensors?
A: The card identifies open and short circuits via out-of-range limit checking. Detected out-of-range channels are automatically removed from active scan processing to protect remaining input channels.
Q: Will an RTD input channel automatically recover after a sensor fault is cleared?
A: Yes. Out-of-range channels can be manually reinstated or will automatically re-evaluate every 20 seconds to restore normal scan integration if valid signals are detected.
Q: Is the IS200VRTDH1DAB backward-compatible with older VRTD board revisions?
A: The IS200VRTDH1DAB maintains backward compatibility with the first two revisions of the VRTD series within supported Mark VI VME rack architectures.
Field Installation Guidelines
Insert the IS200VRTDH1DAB into its assigned 6U VME slot, ensuring alignment with the upper and lower card guides before seating the rear backplane connectors. Secure the top and bottom panel retaining screws to ensure proper grounding to the chassis frame. Route all RTD field wiring using shielded twisted-pair conductors, terminating shield drain wires to cabinet earth ground at a single point to minimize noise interference. Confirm proper backplane power distribution prior to system startup.
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