I/O modules

The GE IS200VAICH1D (also labeled as IS200VAICH1DAA) functions as a PC Analog Input Card within the General Electric Mark VI Speedtronic system. This board accurately acquires and converts analog signals from field sensors for turbine control. We supply this precision input card to support your critical Mark VI and Mark VIe installations. It interfaces directly with the control rack to process vital process data.

Technical Specifications and Physical Characteristics

Understanding the exact specifications of the GE IS200VAICH1D ensures proper integration into your Mark VI control system. This card features high-resolution conversion with multiple input channels for comprehensive monitoring.

Analog Input Architecture and Signal Processing

The GE IS200VAICH1D excels at capturing precise analog measurements from diverse field devices. Its flexible input architecture accommodates various signal types for turbine monitoring.

• Channel Configuration: You can configure each channel individually for voltage or current input. Software settings determine the appropriate signal range for each point.

• Input Ranges: The card accepts 0-5 V, 0-10 V, ±5 V, ±10 V, and 4-20 mA signals. Consequently, it interfaces with most industrial sensors without external converters.

• Sampling Rate: The module samples all channels at 250 samples per second. This provides adequate bandwidth for turbine speed and temperature monitoring.

• Accuracy: It maintains ±0.05% of full-scale accuracy across the temperature range. Therefore, you receive reliable data for critical control decisions.

• Isolation: Channel-to-channel isolation protects against ground loop interference. This feature prevents faults on one channel from affecting others.

Component Layout and Functional Design

The GE IS200VAICH1D incorporates high-quality components for reliable long-term operation. Its design focuses on signal integrity and noise rejection.

• ADC Converter: A single 16-bit successive approximation ADC serves all channels. An analog multiplexer switches between inputs for sequential conversion.

• Input Filtering: Each channel includes a two-pole low-pass anti-aliasing filter. This removes high-frequency noise before conversion for accurate readings.

• Reference Voltage: An ultra-stable voltage reference ensures consistent conversions over time. Temperature-compensated circuitry maintains accuracy across operating conditions.

• Component Count: Over 300 surface-mount components populate the double-sided board. These include precision resistors, film capacitors, and integrated circuits.

• Calibration Storage: Onboard EEPROM stores factory calibration data for each channel. The system automatically applies these corrections during operation.

Integration with Mark VI Systems

The GE IS200VAICH1D serves as a vital data acquisition component in the Mark VI control architecture. It works alongside other modules like the IS200AEBMG1AFB to ensure comprehensive turbine oversight.

• Backplane Communication: The card connects to the control rack through a proprietary backplane interface. This connection transmits converted data to the main turbine controller.

• Field Wiring: The 50-pin front connector accepts standard shielded instrumentation cable. Clearly labeled termination points simplify installation and troubleshooting.

• Status Indication: Multiple LEDs indicate power status and communication activity. Operators can quickly verify card operation during routine inspections.

• Diagnostic Features: The GE IS200VAICH1D performs continuous self-diagnostics during operation. It reports any detected faults to the main controller for immediate action.

Environmental and Operational Specifications

The GE IS200VAICH1D operates reliably across a wide range of environmental conditions. Its robust design suits demanding power generation environments.

• Operating Temperature: The card functions from -30 to 65 degrees Celsius. This range accommodates both indoor control rooms and harsh turbine enclosures.

• Storage Temperature: It withstands storage from -40 to 85 degrees Celsius. This tolerance ensures survival during shipping and warehouse storage.

• Humidity Rating: The module operates at 5% to 95% relative humidity without condensation. Conformal coating protects components from moisture damage.

• Vibration Resistance: It withstands 5G vibration from 10 to 500 Hz. This ensures reliable operation in high-vibration turbine environments.

• Power Consumption: The card draws 5 Watts maximum from the backplane supply. This low consumption minimizes heat generation within the control rack.

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