GE IS200TPROH1B

Product Parameters

Advantages & Key Features

• High-Density Speed Monitoring: Up to 4 independent speed inputs in a single VME slot, ideal for multi-shaft turbine applications.

• Extended Frequency Range: 0.5 Hz to 25 kHz covers turbine startup to overspeed conditions with margin.

• Extended Temperature Range: –40°C to +70°C operation makes IS200TPROH1B suitable for arctic, desert, and unheated turbine enclosures.

• Enhanced Isolation: 2000 VAC isolation provides superior protection for the Mark VIe backplane.

• Signal Integrity Monitoring: Per-channel amplitude/quality monitoring detects weak or degraded sensor signals before failure.

• Versatile Signal Compatibility: Supports magnetic pickups, proximity probes, TTL, and logic-level signals.

• Programmable Trigger Levels: Per-channel programmable trigger voltage and hysteresis ensure reliable signal detection.

• High Accuracy: ±0.01% reading accuracy provides precise speed and frequency measurements.

• Comprehensive Diagnostics: Open-circuit, signal loss, frequency out-of-range, and signal integrity monitoring per channel.

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

• Drop-In Replacement: Direct replacement for IS200TPROH1A and earlier speed probe terminal boards.

Application Fields

• Gas & Steam Turbines (GE Frame 6B/7EA/9E/HA): Shaft speed monitoring, overspeed detection, speed control.

• Aeroderivative Turbines: Speed monitoring and overspeed protection.

• Compressor Stations: Compressor speed monitoring.

• Generator Speed Monitoring: Turbine-generator speed measurement.

• Multi-Shaft Applications: Speed monitoring of multiple turbine sections.

• Arctic & Desert Installations: Extreme-environment turbine speed monitoring.

Comparison with Competing Products

Key Advantage: IS200TPROH1B provides up to 4 independent speed inputs with extended frequency range (25 kHz), extended –40°C to +70°C temperature range, 2000 VAC isolation, and signal integrity monitoring—making it the premier solution for multi-shaft turbine speed monitoring in extreme environments.

Selection Guidelines & Recommendations

• Input Count: Determine the number of speed inputs required (up to 4 per board).

• Sensor Type: Verify speed sensor type and configure trigger levels in GE ToolboxST.

• Signal Integrity Monitoring: Enable for critical speed sensors to receive early warnings of signal degradation.

• Scaling Configuration: Program scaling factors for RPM or other engineering units.

• Controller Firmware: Requires Mark VIe processor firmware v8.0 or later.

• Wiring Guidelines: Use shielded twisted-pair cables. Maintain shield grounding only at the Mark VIe cabinet end.

• Spare Strategy: Keep one spare per turbine; lead times 8–12 weeks.

• Retrofit: Direct replacement for IS200TPROH1A—regenerate configuration in GE ToolboxST to access enhanced features.

Important Cautions

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

2. Signal Polarity: For magnetic pickups, observe correct polarity for reliable zero-crossing detection.

3. Trigger Level: Incorrect trigger level can cause missed pulses or false triggering—verify with sensor specifications.

4. Cable Length: For magnetic pickups, use low-capacitance cables for runs exceeding 50 meters.

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

6. Shield Termination: Ground speed probe cable shields only at cabinet end.

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

8. Temperature Rating: Verify cabinet ambient does not exceed +70°C or fall below –40°C.

9. Signal Integrity Alerts: Investigate weak signal alerts promptly to prevent sensor failure.

10. Frequency Out-of-Range: Monitor diagnostic alerts for out-of-range conditions—investigate sensor or wiring faults.

11. Channel Mapping: With up to 4 channels, verify field wiring maps to correct ToolboxST channel numbers.