Product Description

IS200WETBH1ABA is a high-density analog/digital terminal board designed by GE for the Mark VIe distributed turbine control system. It is located in the "wet area" of the system (close to the on-site sensors/actuators), providing signal buffering, overvoltage protection, electrical isolation and terminal connections. It is suitable for gas turbines, steam turbines and power station process control, and features strong anti-interference and long-term stability. Model Interpretation

IS200: GE Mark VIe System I/O Module Series

WETB: Wet Terminal Board (Wet Terminal Board)

H: Hardware Version / Function Variant

1ABA: Specific Model / Configuration Code Technical Parameters

?? Electrical Specifications

Power Supply: 24 VDC (18–30 VDC wide range)

Power Consumption: Approximately 5 W (typical)

Analog Input: 10 channels (supports 2/3/4-wire transmitters)

Analog Output: 2 channels (0–20 mA, jumper selectable)

Digital I/O: 16 channels of DI / 8 channels of relay output

Signal Isolation: Photocoupling, anti-common-mode interference

Insulation Resistance: ≥ 500 MΩ (500 VDC)

?? Environment and Mechanics

Operating Temperature: -40°C ~ +70°C

Storage Temperature: -40°C ~ +85°C

Protection Grade: IP20 (board level, suitable for cabinet installation)

Dimensions (L × W × H): Approximately 267 mm × 165 mm × 64 mm (10.5” × 6.5” × 2.5”)

Weight: Approximately 0.9–1.2 kg

Interface: High-density European terminal block + system backplane connector

?? Communication and Characteristics

Communication: Supports RS-422, CANbus, Modbus

Diagnosis: On-board ID chip, supports online system diagnosis

Protection: Overvoltage, overcurrent, short-circuit protection

Certification: CE, RoHS Core Functions

Signal transfer and conditioning: Input and output of analog/digital signals at the site, buffering, isolation and filtering

I/O expansion: Provide 10AI/2AO/16DI/8DO channels for the Mark VIe controller

Electrical isolation: Isolation between the site and the control side to suppress ground loops and surge interference

System diagnosis: ID chip identification and status monitoring, supporting hot swapping and fault location

Turbine control interface: Connect key sensors/actuators such as temperature, pressure, speed, and valve position Applications

Power Generation Industry: Gas turbines, steam turbines, combined cycle power plants (standardized Mark VIe system)

Oil and Gas: Compressor units, turbine mechanical control

Industrial Processes: Large boilers, thermal systems, critical unit monitoring

Manufacturing: Large drive systems, high-speed equipment control Usage & Maintenance Instructions

Installation: Standard cabinet rail installation, placed vertically, with reserved cooling space

Wiring: Analog signals use shielded twisted pair cables, digital signals are kept away from power cables, single-ended grounding

Calibration: Coordinated with Mark VIe system for AI/AO zero point and range calibration

Maintenance: Regularly check terminal fastening and insulation, avoid accumulation of dust/oil

Compatible systems: GE Mark VIe, Mark VI (Speedtronic) turbine control systems