Description
Product Parameters
| Parameter | Specification |
|---|---|
| Brand / Series | GE Mark VIe Speedtronic |
| Model | IS200TVBAH2AAA |
| Monitoring Channels | 8 independent channels |
| Input Signal Types | Accelerometer (IEPE/ICP), velocity pickups, proximity probes, bearing RTD (Pt100/Ni120) |
| Vibration Frequency Range | 1 Hz – 10 kHz |
| Vibration Input Range | ±10 V (programmable scaling) |
| Bearing Temperature Input | RTD (Pt100, Ni120, 3-wire or 4-wire) |
| ADC Resolution | 24-bit delta-sigma (vibration), 16-bit SAR (temperature) |
| Sampling Rate | 1–20 kHz (vibration), 10–500 SPS (temperature) |
| Accuracy (Vibration) | ±0.05% FS |
| Accuracy (Temperature) | ±0.05% + ±0.2°C |
| Isolation | 2000 VAC (field-to-system) |
| CMRR | >110 dB @ 50/60 Hz |
| Diagnostics | Open-circuit detection, short-circuit detection, signal out-of-range monitoring, sensor bias monitoring |
| Status Indication | 8 green LEDs (channel active), 8 red LEDs (channel fault), 2 red summary fault LEDs |
| Operating Temperature | –40°C to +70°C |
| Storage Temperature | –55°C to +85°C |
| Mounting | VME rack-mount terminal board with front-panel I/O connectors |
| Backplane Interface | VME64x (A24/A32, D16/D32/D64) |
| EMC Compliance | IEC 61000-4 Level 4 |
Advantages & Key Features
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Integrated Vibration & Bearing Monitoring: Combines vibration and bearing temperature monitoring on a single board, eliminating separate termination boards.
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High Channel Density: 8 independent channels in a single VME slot.
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Versatile Signal Compatibility: Supports accelerometers, velocity pickups, proximity probes, and RTD temperature sensors.
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High-Speed Vibration Sampling: Up to 20 kHz sampling rate for high-frequency vibration analysis.
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Wide Frequency Range: 1 Hz to 10 kHz covers slow roll to high-speed vibration components.
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Extended Temperature Range: –40°C to +70°C operation makes IS200TVBAH2AAA suitable for extreme environments.
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Enhanced Isolation: 2000 VAC isolation provides superior protection for the Mark VIe backplane.
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Comprehensive Diagnostics: Open-circuit, short-circuit, out-of-range, and sensor bias monitoring per channel.
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ToolboxST Integration: Full configuration, monitoring, and diagnostics via GE ToolboxST.
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Drop-In Replacement: Direct replacement for earlier GE vibration and bearing monitoring terminal boards.
Application Fields
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Gas & Steam Turbines (GE Frame 6B/7EA/9E/HA): Shaft vibration monitoring, bearing vibration monitoring, bearing temperature monitoring, overspeed detection.
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Compressor Stations: Compressor shaft vibration and bearing monitoring.
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Aeroderivative Turbines: Vibration monitoring and bearing protection.
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Generator Monitoring: Generator bearing vibration and temperature monitoring.
Comparison with Competing Products
| Feature | GE IS200TVBAH2AAA | Competitor A (Vibration Module) | Competitor B (Bearing Monitor) |
|---|---|---|---|
| Channels | 8 (vibration + temperature) | 4 (vibration only) | 8 (temperature only) |
| Vibration Freq Range | 1 Hz – 10 kHz | 1 Hz – 5 kHz | N/A |
| Sampling Rate | 20 kHz | 10 kHz | N/A |
| RTD Support | Yes | No | Yes |
| Diagnostics | Open, short, out-of-range, bias | Open only | Open only |
| Isolation | 2000 VAC | 1000 VAC | 1000 VAC |
| Operating Temp | –40°C to +70°C | 0°C to 50°C | 0°C to 50°C |
Key Advantage: IS200TVBAH2AAA provides integrated vibration and bearing temperature monitoring—double the density of competing vibration modules—with wide frequency range, high sampling rate, and comprehensive diagnostics, making it ideal for turbine vibration and bearing protection applications.
Selection Guidelines & Recommendations
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Channel Count: Up to 8 vibration/bearing monitoring channels per board.
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Sensor Type: Configure per channel for accelerometer, velocity pickup, proximity probe, or RTD.
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Vibration Scaling: Program scaling factors in GE ToolboxST for engineering units.
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Sampling Rate: Configure sampling rate based on expected vibration frequencies.
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Controller Firmware: Requires Mark VIe processor firmware v8.5 or later.
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Wiring Guidelines: Use shielded twisted-pair cables for vibration sensors and RTD connections.
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Spare Strategy: Keep one spare per turbine; lead times 8–12 weeks.
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Retrofit: Direct replacement—regenerate configuration in GE ToolboxST.
Important Cautions
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No Hot-Swap: De-energize rack before insertion/removal.
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Sensor Polarity: Observe correct polarity for IEPE/ICP accelerometers and proximity probes.
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RTD Polarity: For 3-wire RTDs, ensure leads are correctly connected.
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Cable Length: For vibration sensors, use low-capacitance cables for long runs.
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Grounding: Connect AGND to Mark VIe system ground at single star point.
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Shield Termination: Ground sensor cable shields only at cabinet end.
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ESD Handling: Use grounded wrist straps; field repair not possible.
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Temperature Rating: Verify cabinet ambient does not exceed +70°C or fall below –40°C.
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Channel Mapping: With 8 channels, verify field wiring maps to correct ToolboxST channel numbers.
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