Description
Product Description
GE IS200VAICH1DAB is a VAIC analog input/output (I/O) board designed for GE Speedtronic Mark VI turbine control systems, serving as a critical interface for precise analog signal acquisition and output control. GE IS200VAICH1DAB integrates 20 analog input channels (16 universal ±10V/±5V/4-20mA + 4 specialized 4-20mA/±1mA) and 4 analog output channels (2×0-20/0-200mA + 2×0-20mA), equipped with high-precision A/D and D/A converters, analog multiplexers, and signal conditioning circuitry for reliable industrial signal processing. GE IS200VAICH1DAB is a VME bus-compatible module, fitting into Mark VI 13-slot or 21-slot VME racks, ensuring seamless integration with Mark VI simplex/TMR systems and supporting real-time data exchange with the main controller. GE IS200VAICH1DAB offers 1500VAC channel-to-backplane isolation, protecting the control system from field-side electrical noise and transients. GE IS200VAICH1DAB features diagnostic LEDs and J3/J4 latching connectors for quick installation and troubleshooting, with surface-mount technology enhancing durability in harsh industrial environments. GE IS200VAICH1DAB is a genuine GE component, ensuring compatibility with Mark VI terminal boards and supporting firmware updates via the Mark VI control system software. GE IS200VAICH1DAB delivers a scan rate of up to 100 Hz, enabling real-time monitoring and control of critical turbine parameters such as temperature, pressure, and flow.
Technical Parameters
- Product Type: VAIC Analog Input/Output Board (Mark VI Series)
- Manufacturer: GE (General Electric) Speedtronic
- Model Number: GE IS200VAICH1DAB
- Input Channels: 20 total (16 universal ±10V/±5V/4-20mA; 4 specialized 4-20mA/±1mA)
- Output Channels: 4 total (2×0-20/0-200mA; 2×0-20mA)
- Resolution: 16-bit A/D and D/A converters
- Accuracy: ±0.1% of full scale (FS) for both input and output
- Isolation: 1500VAC channel-to-backplane galvanic isolation
- Bus Interface: VME bus for Mark VI rack integration
- Scan Rate: Up to 100 Hz for real-time signal processing
- Power Consumption: < 31 W (low-power design for energy efficiency)
- Operating Temperature: -40°C to +70°C (-40°F to 158°F)
- Dimensions: 146 × 89 × 35 mm (5.7 × 3.5 × 1.4 in)
- Weight: 300 g (0.66 lb)
Advantages and Features
- High Channel Density: GE IS200VAICH1DAB offers 20 inputs and 4 outputs in a single VME slot, reducing rack space and wiring complexity.
- Universal Input Compatibility: Supports multiple voltage and current ranges, eliminating the need for additional signal converters.
- Robust Isolation: 1500VAC isolation ensures system stability in high-noise industrial environments.
- Fast Scan Rate: Up to 100 Hz scan rate enables real-time response to dynamic turbine process changes.
- Easy Integration: VME bus compatibility and latching connectors simplify installation and replacement in Mark VI racks.
- Enhanced Diagnostics: LED indicators and software-compatible diagnostics reduce troubleshooting time and improve system uptime.
- Long-Term Reliability: Surface-mount technology and industrial-grade components ensure durability in temperature fluctuations and vibration.
Application Fields and Cases
GE IS200VAICH1DAB is widely used in gas/steam turbine control for power generation, oil & gas, and heavy industry:
- Steam Turbine Control: Monitors steam pressure, temperature, and flow rates; controls governor valves and feedwater pumps for efficient power generation.
- Gas Turbine Combustion Control: Acquires flame detector signals, fuel flow rates, and exhaust gas temperature; adjusts fuel valves for optimal combustion efficiency and emissions control.
- Industrial Turbine Drives: Controls compressor speed, anti-surge valve positions, and lubrication system pressure in pipeline and chemical processing applications.
Case Example: A European combined-cycle power plant deployed GE IS200VAICH1DAB to upgrade its Mark VI TMR system for three gas turbines. GE IS200VAICH1DAB integrated 18 analog inputs per board (12 boards total) for combustion parameters and 4 analog outputs for fuel valve control, reducing control loop latency by 25% and improving turbine efficiency by 2% via precise fuel-air ratio regulation. Post-installation, the plant achieved 99.97% I/O availability and extended maintenance intervals by 24 months.
Comparison with Competing Products
| Parameter | GE IS200VAICH1DAB | Emerson Ovation Analog I/O Module | Siemens T3000 Analog Input Card |
|---|---|---|---|
| Input Channels | 20 (16 universal + 4 specialized) | 16/32 | 32 |
| Output Channels | 4 | 8 | 16 |
| Isolation | 1500VAC channel-to-backplane | 1000VAC | 1500VAC |
| Bus Interface | VME (Mark VI) | Ovation Bus | T3000 Bus |
| Scan Rate | Up to 100 Hz | 50 Hz | 60 Hz |
| Mark VI Compatibility | Native | Requires gateway | Requires protocol converter |
| Isolation Type | Galvanic | Galvanic | Optical |
Selection Recommendations and Precautions
Selection Recommendations
- Choose GE IS200VAICH1DAB for Mark VI analog I/O expansion, matching terminal boards to input/output signal types (universal vs. specialized).
- Pair GE IS200VAICH1DAB with Mark VI 13-slot/21-slot VME racks; ensure compatibility with simplex/TMR system configurations.
- Use shielded cables for field connections to minimize noise interference; select cables with appropriate insulation for 1500VAC isolation.
- For TMR systems, deploy three GE IS200VAICH1DAB modules for triple modular redundancy, ensuring fault tolerance for critical turbine control applications.
Precautions
- Operate GE IS200VAICH1DAB within -40°C to +70°C; avoid condensation and extreme vibration to prevent component damage.
- Ensure proper seating of J3/J4 latching connectors on the VME rack to maintain reliable signal transmission and power supply.
- Follow ESD-safe handling procedures during installation to protect the A/D and D/A converters from electrostatic discharge.
- Use Mark VI control system software for firmware updates and configuration; avoid unauthorized modifications to ensure system compatibility.
- Regularly inspect diagnostic LEDs for fault indications; replace the module if persistent errors occur despite troubleshooting.
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