GE IS200TTPWG1B

Product Parameters

Advantages & Key Features

• Mixed Input Flexibility: IS200TTPWG1B combines thermocouple and pressure transducer inputs on a single board, eliminating the need for separate terminal boards for temperature and pressure monitoring.

• Configurable Channel Allocation: Each channel can be independently configured as thermocouple or pressure transducer via GE ToolboxST, matching specific application requirements.

• High Channel Density: 16 mixed inputs in a single VME slot—double the density of competing modules.

• High-Precision CJC: Built-in CJC sensor with automatic compensation ensures thermocouple measurement accuracy.

• 24-Bit Thermocouple Conversion: High-resolution ADC delivers stable, noise-free temperature readings.

• Programmable Transducer Inputs: Each transducer channel supports 4–20 mA, 0–10 V, or ±10 V inputs.

• Comprehensive Diagnostics: Open-circuit, short-circuit, CJC fault, over/under-range, and loop power fault detection per channel.

• Opto-Isolation: 1500 VAC isolation protects the Mark VIe backplane from field wiring faults.

• ToolboxST Integration: Full configuration, calibration, and diagnostics via GE ToolboxST.

• Drop-In Replacement: Direct replacement for earlier GE mixed thermocouple/transducer terminal boards.

Application Fields

• Gas & Steam Turbines (GE Frame 6B/7EA/9E/HA): Exhaust gas temperature (thermocouple) combined with fuel gas pressure (4–20 mA), steam pressure (4–20 mA), and bearing temperature (thermocouple).

• Combined Cycle Plants: HRSG superheater temperature (thermocouple) plus steam drum pressure (4–20 mA) and feedwater flow (4–20 mA).

• Compressor Stations: Discharge temperature (thermocouple) combined with suction/discharge pressure (4–20 mA).

• Aeroderivative Turbines: Exhaust temperature (thermocouple) plus fuel flow (4–20 mA) and oil pressure (4–20 mA).

Comparison with Competing Products

Key Advantage: IS200TTPWG1B provides 16 mixed thermocouple/transducer inputs—double the density of competing mixed modules—with high-precision CJC and comprehensive diagnostics, making it ideal for turbine applications requiring both temperature and pressure monitoring.

Selection Guidelines & Recommendations

• Channel Configuration: Determine required mix of thermocouple and transducer inputs—configure each channel in GE ToolboxST.

• Thermocouple Type: Select J, K, T, E, R, S, or B per channel.

• Transducer Type: Configure 4–20 mA, 0–10 V, or ±10 V per channel.

• Transducer Loop Power: External 24 VDC supplies required—plan cabinet power distribution.

• CJC Sensor Placement: Maintain adequate airflow around the CJC sensor on the terminal block.

• Controller Firmware: Requires Mark VIe processor firmware v7.5 or later.

• Wiring Guidelines: Use shielded thermocouple extension-grade leads and twisted-pair cables for transducers.

• Spare Strategy: Keep one spare per turbine; lead times 6–10 weeks.

• Retrofit: Direct replacement—regenerate configuration in GE ToolboxST.

Important Cautions

1. No Hot-Swap: De-energize rack before insertion/removal.

2. Thermocouple Polarity: Reverse connection produces negative readings—verify polarity.

3. Transducer Polarity: Observe correct polarity for 4–20 mA loops and voltage inputs.

4. CJC Protection: Do not apply conformal coating or tape over the terminal block area.

5. Transducer Loop Power: External 24 VDC required—ensure supplies are connected.

6. Grounding: Connect AGND to Mark VIe system ground at single star point.

7. Shield Termination: Ground shields only at cabinet end.

8. ESD Handling: Use grounded wrist straps; field repair not possible.

9. Channel Mapping: With 16 mixed channels, verify field wiring maps to correct ToolboxST assignments.

10. Input Overload: Sustained transducer input >30 V or >50 mA may damage input circuitry.