Description
The GE IS200SDIIH1ADB is a critical Signal Conditioning / Isolator Interface board designed exclusively for the Mark VI series gas/steam turbine control system. This module plays a vital role in managing the interface between the turbine’s critical sensors and the central control processors. Its primary function is to receive low-level analog signals, such as millivolt or milliamp inputs from various transducers and sensors monitoring vibration, temperature, and pressure, and condition these signals by providing isolation, filtering, and conversion into a high-integrity, digitized format for the system’s central processors. The IS200SDIIH1ADB is an essential component within the Speedtronic family, renowned for its application in protecting and controlling high-value rotating equipment.
As part of the Mark VI system, the IS200SDIIH1ADB module is installed in a VME-based rack, where it operates in a harsh industrial environment characterized by significant electrical noise and potential ground loops. The board’s design emphasizes signal integrity and reliability above all else, providing galvanic isolation to prevent noise from corrupting sensitive measurement data and to protect the central control system from transient voltage spikes. The value of the GE IS200SDIIH1ADB lies in its contribution to the overall safety and availability of the turbine unit; by ensuring accurate and reliable data acquisition from protection sensors, it enables the control system to make precise adjustments and initiate immediate shutdowns to prevent catastrophic equipment damage. The reliability of the IS200SDIIH1ADB is therefore paramount for uninterrupted power generation.

IS200SDIIH1ADB MRP683026 GE
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | IS200SDIIH1ADB |
| Manufacturer | GE Industrial Systems (Mark VI System) |
| Product Type | Signal Conditioning / Isolator Interface Board |
| Part Number | MRP683026 |
| Compatible System | Mark VI Turbine Control System |
| Backplane Interface | VME (VMEbus) |
| Function | Analog Input Signal Conditioning and Isolation |
| Number of Channels | Dependent on specific firmware and configuration |
| Input Signal Type | Accepts low-level analog signals (e.g., mV, mA) from sensors |
| Isolation | High-grade galvanic isolation between field inputs and system side |
| Power Requirement | Powered by the Mark VI rack’s power supply via the VME backplane |
| Operating Temperature | 0°C to 60°C (typical for industrial control racks) |
| Certifications | Designed to meet rigorous industrial and power generation standards |
Main Features and Advantages
The GE IS200SDIIH1ADB is engineered with a focus on maximum signal integrity and system protection. Its most critical feature is the robust galvanic isolation integrated into each input channel. This isolation breaks ground loops, suppresses common-mode noise, and shields the sensitive Mark VI control hardware from potentially destructive voltage surges originating in the field, significantly enhancing the system’s overall reliability and mean time between failures (MTBF). The board also incorporates sophisticated signal filtering circuitry that attenuates high-frequency electrical noise commonly found in power plant environments, ensuring that the data passed to the control processors is a clean and accurate representation of the physical process variable.
Configuration and diagnostics are key advantages of the IS200SDIIH1ADB. The module is typically configured through the Mark VI’s ToolboxST software suite, allowing engineers to set scaling, filter parameters, and alarm thresholds digitally. This software integration simplifies commissioning and maintenance, enabling quick verification of channel functionality and signal status. The board’s design is highly specialized for its role in turbine control, featuring components rated for extended temperature ranges and long-term operational stability. The proven design of the IS200SDIIH1ADB ensures compatibility and seamless communication within the comprehensive Mark VI ecosystem, providing a trusted interface for critical machinery protection systems.
Application Field
The application of the GE IS200SDIIH1ADB is highly specialized, focusing primarily on the power generation industry. Its core use is within GE’s Mark VI speedtronic control systems that govern large gas turbines and steam turbines. In these applications, the IS200SDIIH1ADB interfaces with a suite of critical protection sensors. This includes vibration probes (proximitors), thermocouples for exhaust gas and bearing temperatures, and pressure transducers for fuel and lube oil systems. The module conditions these signals, which are then used by the turbine control logic to monitor performance and, most importantly, to trigger protective shutdowns if pre-defined safe operating limits are exceeded.
Beyond simple power generation, the IS200SDIIH1ADB is essential in combined-cycle power plants where operational efficiency and fast startup times are critical. It also finds application in mechanical drive trains for compressors and pumps in oil and gas pipelines. In every scenario, the module’s role is consistent: to serve as a reliable and high-fidelity bridge between the harsh physical environment of the turbine and the digital world of the control system. The IS200SDIIH1ADB is indispensable for ensuring the safe, reliable, and efficient operation of some of the world’s most critical energy assets, preventing costly downtime and equipment damage.

IS200SDIIH1ADB MRP683026 GE
Related Products
IS200SDIIH1A: The base model of this signal conditioner, potentially with minor firmware or hardware revisions differences from the IS200SDIIH1ADB.
IS215UCVEM06A: A VME Processor Board for the Mark VI system, which acts as the central controller receiving data from the IS200SDIIH1ADB.
IS200TBAIH1C: A Termination Board Assembly that provides the physical connection points for field wiring, often used in conjunction with signal conditioners.
IS200EPSMG1A: A Power Supply Module for the Mark VI rack, providing the necessary power to the IS200SDIIH1ADB and other modules.
IS200VRTDH1D: A dedicated RTD (Resistance Temperature Detector) Input Board, handling temperature signals alongside the IS200SDIIH1ADB.
Mark VI Control System: The overarching turbine control platform that the IS200SDIIH1ADB is an integral component of.






Email: sales@runshengdcs.com
WhatsApp / Wechat:+86 15383419322
Phone:+86 15383419322