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Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | General Electric (GE) / GE Energy |
| Part Number | IS200TRTDH1CBB |
| Series | Mark VI Turbine Control System |
| Product Type | Resistance Temperature Detector (RTD) Terminal Board |
| Application | Temperature monitoring in gas/steam turbine control systems |
| RTD Input Channels | Up to 16 three-wire RTD inputs |
| Terminal Blocks | 2 barrier-type terminal blocks |
| Analog Input Requirement | Value must be calibrated before analog input can be used for monitoring |
| Revision Impact | Revision affects control mode and terminal board compatibility |
| Country of Origin | USA |
| Inventory Status | In Stock |
Product Introduction
GE IS200TRTDH1CBB is a Resistance Temperature Device (RTD) terminal board for GE’s Mark VI turbine control system. It supports up to 16 three-wire RTD inputs connected to two barrier-type terminal blocks for temperature monitoring in gas and steam turbine applications.
For replacements, the exact suffix “CBB” is critical. Revision changes impact control mode and terminal board compatibility, so verify the full model number and compare against the existing board before ordering.
- IS200TRTDH1CBB
- IS200TRTDH1CBB
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| RTD reading shows open/circuit fault | Sensor broken, wiring open, loose terminal, board fault | ✅ High | Check resistance at sensor terminals; inspect wiring continuity | Trace sensor and wiring before replacing board |
| RTD reading is stuck at extreme value | Sensor shorted, wiring short, board input channel fault | ✅ High | Measure resistance at terminals; check for short to ground | Inspect sensor wiring and board input |
| RTD drifts with temperature | Sensor degradation, noise coupling, poor grounding, board aging | ✅ Medium | Monitor signal stability; check shield termination and ground | Verify grounding and sensor integrity |
| RTD input unusable after install | Wrong revision, board not calibrated, power issue, installation error | ✅ High | Confirm exact suffix; verify analog input calibration procedure | Calibrate board before power-up |
| Multiple RTD channels dead | Rack backplane power issue, adjacent module fault, master controller fault | ❌ Low | Check rack power rails and status of adjacent cards | Investigate cabinet power first |
| Controller reports RTD fault | Config mismatch, wrong I/O mapping, revision mismatch, board fault | ✅ High | Read diagnostic buffer and compare to cabinet documentation | Confirm config and revision match |
Contact technical support with photos of the board, terminal wiring, RTD sensors, and controller diagnostics if you cannot isolate the fault.
Frequently Asked Questions
Q: Is IS200TRTDH1CBB the full model number?
A: Yes. The suffix “CBB” is part of the exact model. Do not order just “IS200TRTDH1C” without the suffix. Verify it matches the existing board.
Q: What does the revision suffix (CBB) impact?
A: Revision affects control mode and terminal board compatibility. Using the wrong revision can cause calibration or communication issues.
Q: How many RTD inputs does this board support?
A: Up to 16 three-wire RTD inputs, connected to two barrier-type terminal blocks
Q: Can I hot-swap this terminal board?
A: Do not assume so. RTD boards interface temperature sensors that may be tied to live equipment. Power down and follow site procedure before removal.
Q: What condition is typically available?
A: Listings show in-stock inventory, unused, or rebuilt condition. For procurement, request actual photos and test reports if you need documentation
Q: Why is it cheaper than OEM factory stock?
A: It is usually surplus or aftermarket inventory, not current OEM production. That is normal for legacy Mark VI parts, but you still need revision and condition verification.
Q: What should I check before installing the replacement?
A: Match the full model number (IS200TRTDH1CBB), inspect terminal connectors, verify RTD sensor wiring, and follow ESD handling (grounded wrist strap). Calibrate the analog input after install before using for monitoring.
