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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model | IS200TRTDH1C |
| Manufacturer | General Electric (GE) |
| Series | Speedtronic Mark VI |
| Function | RTD Input Terminal Board (TRTD) |
| Number of RTD channels | 16 three-wire RTD inputs |
| Terminal blocks | 2 barrier-type blocks, 24 terminals each (up to #12 AWG) |
| Excitation current | 10 mA DC multiplexed (not continuous) per RTD |
| Input voltage | 125 V |
| Total output power | 400 W |
| Operating temperature | 0 to 60°C |
| Board size | 6.25 in × 4.25 in |
| Cable distance | RTDs up to 300 m (984 ft) from cabinet, max 2-way resistance 15Ω |
| Noise protection | Built-in noise-reduction circuitry for surge and high-frequency suppression |
| Shield grounding | Shield terminal strip connected to chassis ground on left of each block |
| Manual | GEH-6421L |
| Country of origin | USA |
Product Introduction
GE IS200TRTDH1C is an RTD Input Terminal Board (TRTD) for the Speedtronic Mark VI turbine control system. It accepts 16 three-wire RTD temperature sensors and converts them into digital temperature values for the controller via I/O processors.
This board is selected when the existing RTD terminal fails, shows temperature reading errors, or needs replacement to maintain accurate turbine temperature monitoring. Buyers prioritize exact model match, verified connector and terminal block configuration, and clear compatibility with their Mark VI rack because temperature input faults can trigger false trips or inhibit start-up.
- IS200TRTDH1C
- IS200TRTDH1C
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| One or more RTD temperature readings stuck at max/min or open-circuit | Broken RTD sensor, loose wire, or terminal block fault | ✅ High | Measure resistance at RTD terminals with multimeter; check continuity of sensor wires | Tighten terminals, replace sensor if resistance is out of range |
| All 16 RTD channels show no reading or communication timeout | Backplane cable fault, processor board fault, or TRTD board failure | ✅ High | Check D-type connector to VME rack; verify VRTD processor board status LEDs | Reseat cable, check VRTD board, then replace TRTD if faults follow the board |
| Intermittent temperature jumps or noise spikes | Poor shielding, ground loop, or noise on RTD wires | ✅ High | Inspect shield grounding on terminal block; check cabinet grounding | Verify single-ended shield ground, add ferrite if needed |
| Only some RTD channels fail (e.g., channels 1–8 work, 9–16 fail) | One terminal block damaged or wiring fault on that block | ✅ High | Test each terminal block separately; check for burnt or corroded terminals | Replace TRTD board if one block consistently fails |
| Excitation current fault or RTD fault lamp on | Internal TRTD excitation circuit failure | ✅ High | Measure 10 mA excitation at RTD terminals with multimeter | Replace TRTD board if excitation is missing or unstable |
| Other Mark VI I/O modules also misbehave | Backplane, power supply, or VME rack fault | ❌ Low | Check rack power, VME backplane voltage, and adjacent module operation | Do not assume TRTD is the root cause |
If you are stuck, send photos of terminal block wiring, LED status, connector pins, and diagnostic logs to technical support.
Frequently Asked Questions
Q: What is GE IS200TRTDH1C?
A: It is a GE Speedtronic Mark VI RTD Input Terminal Board that accepts 16 three-wire RTD temperature sensors and sends digitized temperature data to the controller via I/O processors.
Q: Is this a direct replacement?
A: Only if your existing system uses IS200TRTDH1C in the same Mark VI configuration. Always match the exact part number and verify terminal block type, cable connector, and rack slot before installation.
Q: Is it new, used, or refurbished?
A: This part is available in UNUSED (New Surplus) and REBUILT (Refurbished) conditions. Condition must be clearly stated by the seller, and testing status should be confirmed before purchase.
Q: Can I install it without changing anything else?
A: Often yes, but do not assume that. Check the original board revision, cable connector type, terminal wiring, and any site-specific configuration. TRTD boards are sensitive to wiring and grounding errors.
Q: What should I check before swapping the board?
A: Photograph the old terminal block wiring, note the rack position, verify power is off, confirm grounding, and inspect the D-type connector for bent pins or corrosion. A bad swap often starts with a wiring mistake.
Q: Why is surplus cheaper than factory stock?
A: Surplus pricing reflects secondary-market sourcing, limited availability, and older inventory. The lower price does not mean it is the same as factory-new sealed stock, so testing and condition must be transparent.
Q: Does this part come with a warranty?
A: Warranty terms depend on the seller. For B2B buyers, confirm testing status, return terms, and whether a test report is included. Typical industrial surplus listings offer 1-year warranty on tested units.
