GE DS200TBQDG1AFF

The DS200TBQDG1AFF is a multifunctional signal termination board from General Electric (GE)'s Mark VIe Speedtronic™ series, specifically designed for control systems of large rotating machinery such as gas turbines and steam turbines. This module serves as a hub for signal distribution and conditioning, responsible for connecting on-site sensors (such as thermocouples, RTDs, and 4-20mA transmitters) to the I/O modules of the Mark VIe system, providing reliable signal isolation, filtering, and distribution functions.

The DS200TBQDG1AFF plays a crucial role in the Mark VIe rack, with its core values being:

• Signal Integrity Assurance: Built-in filtering and isolation circuits to suppress electromagnetic interference (EMI) in industrial environments.
• Flexible Configuration: Supports mixed access of multiple sensor types (TC/RTD/4-20mA).
• Quick Maintenance: Modular design supports hot swapping (when the system allows), reducing downtime.

Product Parameters

• Product Model: DS200TBQDG1AFF
• Manufacturer: General Electric (GE)
• Product Type: Multifunctional signal termination board
• Compatible System: GE Mark VIe turbine control platform
• Supported Signal Types: Thermocouples (J/K/T types), RTD (PT100), 4-20mA
• Number of Channels: 16-32 channels (depending on configuration)
• Signal Isolation: Isolation between channels (500V AC)
• Accuracy: ±0.1% FS (4-20mA), ±0.5°C (RTD)
• Connector Type: High-density screw terminal block
• Operating Temperature Range: -30°C to +70°C (-22°F to +158°F)
• Protection Rating: IP20 (must be installed in a control cabinet)
• Installation Method: Rail-mounted or directly fixed to the Mark VIe rack
• Supporting Module: Works in conjunction with the IS200STAIH2A (analog input module)

Structure and Composition

• Multifunctional Terminal Block:
  • Grouped design for accessing thermocouple, RTD, and 4-20mA signals respectively, with each group marked with channel numbers and signal types.
• Signal Conditioning Circuit:
  • Thermocouple: Cold junction compensation (CJC) circuit to ensure the accuracy of temperature measurement.
  • RTD: Constant current source drive (3/4-wire system) to eliminate the influence of lead resistance.
  • 4-20mA: Precision sampling resistor (250Ω) and isolation amplifier.
• Backplane Interface:
  • Communicates with the Mark VIe rack backplane through a high-speed connector, transmitting signals to the I/O module.
• Status Indicators:
  • Power, communication, and channel status LEDs to support quick fault diagnosis.
• Metal Enclosure:
  • Aluminum alloy material, providing EMI shielding and heat dissipation functions.

Main Features and Advantages

1. Multi-signal Type Compatibility:
   • A single module supports mixed access of thermocouples, RTDs, and 4-20mA, reducing rack space occupation.
   • Cold junction compensation (CJC) technology to eliminate temperature errors at the thermocouple reference end.
2. High Reliability Design:
   • 500V AC channel isolation, effectively suppressing ground loop interference and common-mode noise.
   • Wide temperature operation (-30°C to +70°C), adapting to the high-temperature environment of gas turbine control cabinets.
3. Seamless Mark VIe Integration:
   • Natively compatible with GE IS200/IS215 series I/O modules (such as IS200STAIH2A).
   • Automatic identification of terminal board configuration through ToolboxST software, simplifying debugging.
4. Industrial-grade Durability:
   • Complies with IEC 60068 vibration/impact standards, suitable for harsh scenarios such as power plants and offshore platforms.

Application Fields

• Power Generation Industry:
  • Integration of gas turbine combustion chamber temperature (thermocouple), bearing temperature (RTD), and fuel pressure (4-20mA) signals.
  • Steam turbine cylinder expansion monitoring (LVDT signal conditioning).
• Oil and Gas:
  • Interface for compressor station vibration probes (speed sensors) and pressure transmitters.
• Industrial Drives:
  • Monitoring of large motor winding temperature (RTD) and cooling water flow (4-20mA).

Installation and Maintenance

• Operate with power off (or confirm that the system supports hot swapping).
• Check the terminal block wiring according to the drawings (such as thermocouple polarity, RTD wire sequence).
• Use a torque screwdriver to fasten the terminals (usually 0.5-0.6 Nm).

• Check for loose terminals annually to prevent increased contact resistance.
• Regularly clean the terminal block with anhydrous ethanol to avoid oxidation.
• Calibrate the cold junction compensation (CJC) through ToolboxST software.

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Xingruijia

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Consult now to obtain the latest technical information and quotation for GE modules!

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