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The GE IS200SRTDH2ACB is a high-density Resistance Temperature Detector (RTD) Input Module designed for the Mark VI and Mark Vie turbine control systems. This specialized module serves as the primary interface for connecting multiple RTD sensors to the control system, enabling precise and reliable temperature monitoring of critical turbine components. Its core function is to accurately measure the small resistance changes in RTD elements, which correlate directly to temperature, and convert these analog measurements into high-resolution digital values for use by the system’s central processors. The IS200SRTDH2ACB is an essential part of the protection and monitoring scheme, providing the data necessary to prevent equipment damage from overheating.
As a key component within the Speedtronic platform, the IS200SRTDH2ACB is engineered for maximum channel density and signal accuracy in the challenging environment of a power generation facility. It installs directly into a VME slot in the main control rack, benefiting from the rack’s robust power and communication infrastructure. The module provides individual signal conditioning and isolation for each channel, ensuring that a fault on one sensor does not affect the readings of others. The reliability of the GE IS200SRTDH2ACB is paramount for maintaining turbine availability and safety, as it continuously monitors temperatures in bearings, exhausts, lube oil, and other critical areas, allowing operators and the control logic to take preemptive action before conditions become hazardous.
IS200SRTDH2ACB GE
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | IS200SRTDH2ACB |
| Manufacturer | GE Industrial Systems (Mark VI System) |
| Product Type | RTD (Resistance Temperature Detector) Input Module |
| Compatible System | Mark VI, Mark Vie Turbine Control System |
| Backplane Interface | VME (VMEbus) |
| Input Type | 2-wire, 3-wire, or 4-wire RTD connections (typically 100 Ohm Platinum) |
| Number of Channels | 16 channels (high-density configuration) |
| Sensor Type | Supports Pt100, Pt200, Pt1000, Ni120, and other common RTDs |
| Measurement Accuracy | High accuracy, typically within ±0.1°C or better |
| Excitation Current | Provides precise current source for each RTD |
| Input Filtering | Digital filtering for noise rejection |
| Isolation | Channel-to-channel and channel-to-system isolation |
| Power Requirement | Powered by the Mark VI rack’s +5V and ±15V power supplies |
| Operating Temperature | 0°C to 60°C |
Main Features and Advantages
The GE IS200SRTDH2ACB offers several distinct advantages for critical temperature monitoring. Its high channel density is a significant feature, allowing up to 16 RTD sensors to be connected to a single module, which optimizes rack space and reduces the overall hardware footprint of the control system. Each channel is independently conditioned and isolated, providing exceptional noise immunity and preventing ground loops from compromising measurement integrity. This design ensures that a short circuit or failure on one temperature sensor will not disrupt the monitoring of the other 15 channels, a critical feature for maintaining operational awareness during a fault condition.
Advanced diagnostics and flexibility are key strengths of this module. The IS200SRTDH2ACB supports automatic lead resistance compensation for 3-wire and 4-wire RTD connections, eliminating measurement errors caused by long wire runs. It can be easily configured through the Mark VI’s ToolboxST software to match the specific type of RTD sensor installed in the field (e.g., Pt100, Ni120), and allows for custom scaling and alarm setpoints. The module continuously performs diagnostics to detect sensor faults such as open circuits or short circuits, immediately alerting operators to issues that require maintenance. This combination of high density, robust isolation, and intelligent diagnostics makes the IS200SRTDH2ACB a reliable and efficient solution for comprehensive turbine temperature monitoring.
Application Field
The application of the GE IS200SRTDH2ACB is primarily within the power generation industry, specifically in gas and steam turbines controlled by GE’s Mark VI or Mark Vie systems. It is deployed to monitor a wide array of critical temperatures that are vital for the safe and efficient operation of the turbine. Key applications include measuring bearing metal temperatures to prevent bearing wipeouts, monitoring exhaust gas temperature profiles on gas turbines to optimize combustion and detect anomalies, and tracking lube oil and hydraulic fluid temperatures to ensure proper viscosity and cooling. In steam turbines, the module is used to monitor casing temperatures, gland seal steam temperatures, and bearing temperatures.
Beyond standard power generation, the IS200SRTDH2ACB is also essential in combined-cycle plants and for turbines used in mechanical drive applications, such as compressing natural gas in pipeline stations. In these settings, precise temperature data is crucial for predictive maintenance strategies, helping to schedule downtime before a failure occurs. The reliable data provided by the IS200SRTDH2ACB enables advanced control algorithms that maximize turbine efficiency and minimize emissions. Its role is foundational to the condition-based monitoring and protection strategies that define modern, intelligent turbine control systems.
IS200SRTDH2ACB GE
Related Products
IS200SRTDH2A: The base version of this RTD input module, which the IS200SRTDH2ACB is a variant of, likely with specific firmware or component revisions.
IS200RTDH2A: Another RTD input module in the Mark VI series, potentially with a different channel count or specification.
IS200TBCIH2C: A Terminal Board Assembly that provides the physical screw terminals for field wiring connection to the RTDs, used in conjunction with the IS200SRTDH2ACB.
IS215UCVEM06A: The VME Processor Board that acts as the central controller, receiving and processing all temperature data from the IS200SRTDH2ACB.
IS200EPSMG1A: The Power Supply Module that provides clean, stable power to the IS200SRTDH2ACB within the rack.
IS200EXHSG1A: An I/O Extension module used to expand the I/O capacity of the system, which may house additional modules like the IS200SRTDH2ACB.
