IS200AEADH3ADA — GE Speedtronic Mark VI / Mark VIe AEAD Interface Board

The IS200AEADH3ADA is a printed circuit board from GE's Speedtronic Mark VI / Mark VIe turbine control system, belonging to the IS200 board family. It is an AEAD-type interface board — a VME-format card that mounts in the turbine control cabinet rack and manages signal interfacing between field instrumentation and the central control processors.

The Mark VI and Mark VIe platforms are GE's turbine control systems, used to govern gas and steam turbines in power generation and industrial drive applications. Boards in the IS200 series form the interface layer between the controllers and the field devices — sensors, transducers, and actuators. The IS200AEADH3ADA carries the "H3" board designation and an "ADA" revision suffix, distinguishing it from related AEAD variants such as the IS200AEADH1ADA and IS200AEADH3ACA. It features an onboard identification chip that allows the system to automatically recognise and diagnose the module.

Key Specifications

Important: Physical dimensions, weight, operating temperature range, and channel count vary significantly between public listings and are not consistently documented. Please confirm these particulars against the board label, GE documentation, or your system manual before ordering.

Product Functions

• Signal processing & interfacing: Handles signal processing and interface functions between field sensors and the central control processors.
• I/O feedback & data acquisition: Supports precise data acquisition from field instrumentation, feeding accurate process data back into the control loop.
• Field signal conditioning: Conditions and prepares analog and digital field signals for reliable use by the Mark VI/VIe control architecture.
• Automatic module identification: An onboard ID chip lets the I/O processor and control system automatically recognise and diagnose the module, simplifying commissioning and fault detection.
• Backplane communication: Links to the controller through the backplane and associated I/O packs, participating in the system's high-speed data exchange.
• Rack-mounted modular design: As a VME-format card it slots into the control cabinet rack, allowing board-level replacement during maintenance without full system rewiring.
• System lifecycle support: Keeps existing Mark VI/VIe installations operational, supporting spares strategies for ageing turbine control systems.

Application Scenarios

• Gas turbine control: Signal interface within Mark VI/VIe control cabinets for gas turbine governor, sequencing, and protection systems.
• Steam turbine control: Field signal interfacing in steam turbine control applications.
• Power generation plants: Keeps legacy Mark VI/VIe turbine controls serviceable in utilities managing long-life assets.
• Oil & gas facilities: Support for turbine-driven compressors and mechanical drive applications under Mark VI/VIe control.
• Maintenance & overhaul: Sourced as a spare during scheduled outages to minimise downtime and rewiring effort.
• Legacy system lifecycle support: Supports spares and phased modernization strategies for plants still running Mark VI/VIe controls.

Frequently Asked Questions