- Model: IS220PVIBH1A
- Manufacturer: GE
- Core Function: Digitizes and processes signals from vibration sensors, proximity probes, accelerometers, and Keyphasor inputs, providing conditioned data for real-time machine health monitoring, alarm generation, and protection in turbine applications.
- System Compatibility: Compatible with GE Mark VIe and Mark VIeS control systems, including Speedtronic turbine platforms.
- Supply Status: Available as new surplus, refurbished, or repair/exchange; supported as current or extended lifecycle component.
- Warranty Standard: 12-month functional warranty, fully tested.
Key Technical Specifications
- Product Model: IS220PVIBH1A
- Manufacturer: GE
- System Platform: Mark VIe
- Power Supply Voltage: 28 V DC nominal (supplied via terminal board), operational range typically 24-32 V DC for stable analog front-end and processor operation.
- Power Consumption: Approximately 8-12 W, minimizing thermal contribution in dense I/O configurations.
- Communication Interfaces: Dual 100 Mbps full-duplex Ethernet ports for redundant IONet connectivity to Mark VIe controllers.
- Input Channels: 13 differential channels for vibration and proximity monitoring.
- Channel Configuration: Channels 1-3: Accelerometers; Channels 4-8: Velomitors or velocity sensors; Channels 9-12: Proximitors (proximity probes); Channel 13: Configurable as Keyphasor or proximity input.
- Input Signal Range: ±20 V peak typical for proximity/probe signals, supporting standard Bently Nevada or equivalent sensors.
- Resolution: High-resolution A/D conversion (typically 16-bit or better), enabling precise vibration amplitude and phase measurement.
- Sampling Rate: Sufficient for capturing vibration spectra up to several kHz, critical for detecting bearing faults and rotor dynamics.
- Operating Temperature Range: -30°C to +65°C, designed for turbine hall conditions with vibration and temperature exposure.
- Humidity Tolerance: 5% to 95% non-condensing, ensuring reliable sensor interfacing in humid environments.
- Dimensions: Compact Mark VIe I/O pack approximately 3.25″ high x 1.65″ wide x 4.78″ deep, for direct attachment to terminal boards.
- Weight: Approximately 0.5-1.0 kg, facilitating easy installation and field swaps.
- Mean Time Between Failures (MTBF): >150,000 hours (typical Mark VIe I/O series), supporting continuous monitoring reliability.
- Certification Standards: CE compliant, UL 508 listed for industrial control equipment, RoHS directive adherence.
Technical Architecture & Functional Positioning
The IS220PVIBH1A serves as a specialized vibration monitoring pack in the Mark VIe distributed architecture, mounted directly on a vibration terminal board (typically TVBA) at the field layer. It conditions raw signals from proximity probes, accelerometers, and velocity sensors, performs local digitization, filtering, and phase processing (including 1X tracking for Keyphasor), then transmits processed vibration parameters and waveforms over IONet to the controller. This placement enables low-latency data acquisition close to sensors, reducing noise pickup in high-EMI turbine environments.
The pack integrates a common processor board, dedicated vibration acquisition circuitry, and negative power supply daughterboards for sensor excitation. It supports advanced diagnostics such as sensor health checks, cable continuity verification, and excessive vibration alarming, with configurable bandpass filters and integration modes for velocity or displacement outputs. These features solve critical engineering problems: early detection of rotor unbalance, misalignment, or bearing wear through precise amplitude and phase data; accurate 1X and multi-harmonic analysis for balancing; and integration of vibration protection into turbine trip logic without separate monitoring systems.
In simplex or TMR setups, the module provides synchronized sampling across redundant packs, ensuring consistent machine health data for predictive maintenance and compliance with API 670 standards for machinery protection.
Typical Application Scenarios
- Applied in heavy-duty gas turbines for shaft vibration, bearing absolute vibration, and Keyphasor monitoring to enforce trip limits and support online diagnostics.
- Used in steam turbine generator sets for rotor dynamics supervision, detecting issues like oil whirl or steam whirl through proximity probe feedback.
- Serves as a direct replacement in Mark VIe systems paired with TVBA terminal boards, enabling upgrades from legacy vibration monitoring.
- Supports combined-cycle plants for integrated condition-based maintenance, correlating vibration trends with load and temperature data.
- Utilized in industrial turbines and compressors requiring API-compliant vibration protection with high-resolution spectral analysis.
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