IS200GDDDG1ABA
IS200GDDDG1ABA
IS200GDDDG1ABA

GE IS200ESELH1AAA | Mark VI Series Speed/Encoder Signal Interface Module

  • Brand: GE (General Electric)
  • Model: IS200ESELH1AAA (Variant of IS200 Series)
  • Product Type: Speed/Encoder Signal Interface Module
  • Series: Mark VI (Gas/Steam Turbine Control Systems)
  • Core Function: Serves as a critical interface in GE Mark VI turbine control systems, enabling precise acquisition, conditioning, and transmission of speed/encoder feedback signals from rotating equipment (e.g., turbines, generators) to the VMEbus controller. Designed for high-reliability industrial environments.
  • Key Specs:
    • Bus Compatibility: VMEbus Rev. C.1 (supports 8/16/32-bit data transfer)
    • Form Factor: Compact rectangular PCB (industrial-grade, corrosion-resistant terminations)
    • Input Signal Types: Quadrature encoder, frequency input, tachometer, 4–20 mA current inputs (pyrometers)
    • Isolation: Electrical isolation (protects control integrity from field noise)
    • Operating Temperature: -10°C to +60°C (industrial-grade ruggedness)
    • Applications: Power generation (gas/steam turbines), manufacturing (rotary machinery), petrochemical (compressor control)
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Description

IS200ESELH1AAA: Product Overview​
The GE IS200ESELH1AAA​ is a precision speed/encoder signal interface module designed specifically for GE Mark VI gas and steam turbine control systems, a legacy platform renowned for its reliability in industrial power generation. As part of the Mark VI ecosystem, it acts as a “signal gateway” between field transducers (e.g., rotary encoders, tachometers) and the VMEbus controller, ensuring accurate feedback of rotational speed and position—critical for maintaining turbine stability, efficiency, and safety.
Role in Automation Systems:
Positioned as a “field signal interface” in Mark VI architectures, the IS200ESELH1AAA performs two primary functions:
  1. Signal Acquisition: Receives raw speed/encoder signals from field devices (e.g., a quadrature encoder measuring turbine shaft rotation) and converts them into a digital format suitable for the VMEbus controller.
  2. Signal Conditioning: Filters out electrical noise and isolates sensitive controller circuits from voltage spikes (using optocouplers), ensuring reliable signal transmission in harsh industrial environments.
Core Functionality:
  • VMEbus Compatibility: Conforms to VMEbus Rev. C.1, ensuring seamless integration with VME64 backplanes and controllers (e.g., GE Fanuc 90-30 series). This allows the module to work with existing Mark VI components without major system upgrades.
  • Flexible Signal Handling: Supports multiple signal types (quadrature encoder, frequency input, tachometer) through configurable input channels, making it adaptable to diverse field devices.
  • High Precision: Uses advanced signal processing algorithms to maintain signal integrity (error < ±0.1% full-scale), critical for turbine speed regulation and synchronization.
  • Rugged Design: Industrial-grade components and a compact form factor enable 24/7 operation in high-temperature, high-vibration environments (e.g., power plant turbine halls).
Platform Benefits (Mark VI Series):
The IS200ESELH1AAA inherits the Mark VI platform’s strengths, including:
  • Reliability: The Mark VI system is the industry standard for gas turbine control, with a proven track record of 24/7 operation in power plants worldwide.
  • Legacy Compatibility: The module is designed to work with existing Mark VI components (e.g., I/O modules, contactors), reducing the cost of system upgrades.
  • Scalability: Supports expansion with additional I/O modules to accommodate growing system demands (e.g., adding more encoders to a turbine control system).

    IS200GDDDG1ABA

    IS200GDDDG1ABA

Technical Specifications​
  • Model Number: IS200ESELH1AAA (Variant of IS200 Series)
  • Manufacturer: GE (General Electric)
  • Product Type: Speed/Encoder Signal Interface Module
  • Series: Mark VI (Gas/Steam Turbine Control)
  • Form Factor: Rectangular PCB (corrosion-resistant terminations, factory-drilled mounting holes)
  • Bus Standard: VMEbus Rev. C.1 (supports 8/16/32-bit data transfer)
  • Input Channels: Configurable (e.g., 4 quadrature encoder inputs, 2 tachometer inputs)
  • Input Signal Ranges: 0–5V DC (tachometer), 0–20 mA (pyrometer), quadrature encoder (A/B/Z signals)
  • Isolation: Galvanic isolation (optocouplers, 1500 V AC channel-to-channel)
  • Resolution: 12-bit (analog input), 10-bit (frequency input)
  • Accuracy: ±0.1% (full-scale, analog input), ±0.2% (frequency input)
  • Operating Temperature: -10°C to +60°C (14°F to 140°F)
  • Storage Temperature: -25°C to +85°C (-13°F to 185°F)
  • Humidity: 5–90% non-condensing
  • Weight: Approximately 0.65 kg (1.43 lbs)
  • Certifications: CE, UL (inferred from GE industrial product standards)
Core Features & Customer Value​
1. Reliable Signal Transmission:
The IS200ESELH1AAA’s galvanic isolation and VMEbus compatibility ensure accurate signal transmission from field devices to the controller, even in electrically noisy environments. For example, in a power plant, the module can reliably measure turbine shaft speed (via a quadrature encoder) and transmit the data to the VMEbus controller, which adjusts fuel flow to maintain optimal efficiency.
2. Flexible Configuration:
Configurable input channels allow engineers to customize the module’s functionality for different field devices, reducing the need for additional signal conditioning hardware. This flexibility saves time and money during installation.
3. Rugged Industrial Design:
The module’s operating temperature range (-10°C to +60°C) and compact form factor make it suitable for harsh industrial environments. Its corrosion-resistant terminations extend the module’s lifespan, reducing maintenance costs.
4. Easy Integration:
VMEbus compatibility ensures seamless integration with existing VMEbus systems, minimizing downtime and effort during upgrades. This is invaluable for facilities with legacy VMEbus installations, allowing them to enhance system capabilities without replacing entire architectures.

IS200GDDDG1ABA

IS200GDDDG1ABA

Typical Applications​
The GE IS200ESELH1AAA​ is widely used in industrial automation systems for:
  1. Power Generation:
    • Monitors turbine shaft speed and position (via encoders) for real-time control, ensuring stable power output.
  2. Manufacturing:
    • Used in assembly lines to monitor the speed of rotary machinery (e.g., motors, gears), enabling precise control of manufacturing processes.
  3. Petrochemical Industry:
    • Controls compressor speed (via tachometers) in chemical plants, ensuring safe and efficient operation in hazardous environments.

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