IS230SRTDH2A GE RTD Input | 3-Wire 4-Wire Platinum Support

Product Overview

The GE IS230SRTDH2A operates as a high-precision Simplex Resistance Temperature Detector (RTD) Input Module within the Mark VIe control architecture. This DIN-rail mounted module provides the specialized physical termination and electronic conditioning required for 3-wire and 4-wire RTD sensors. By translating variable resistance into accurate digital temperature data, the IS230SRTDH2A enables the Mark VIe system to monitor critical thermal parameters across gas turbines, steam turbines, and complex industrial processes. Its simplex design offers an efficient, high-density solution for non-TMR (Triple Modular Redundant) applications where precise thermal feedback remains a priority.

Condition: 100% Brand New Original.

Technical Specifications

The IS230SRTDH2A utilizes advanced A/D conversion and isolation technology to maintain sub-degree accuracy in high-noise environments.

Engineering Advantages

• Superior Linearization Accuracy: The IS230SRTDH2A executes real-time linearization algorithms for standard platinum RTD curves. This eliminates the non-linear errors inherent in resistance-based sensing, providing the controller with a direct, accurate temperature value for critical protection logic.

• Lead-Wire Resistance Compensation: For 3-wire and 4-wire configurations, the module automatically compensates for the resistance of the field wiring. This ensures that the distance between the turbine and the control cabinet does not degrade the measurement accuracy, which is vital for remote-mounted sensors.

• High-Rejection Hardware Filtering: Integrated hardware filters suppress 50/60 Hz common-mode noise and electromagnetic interference (EMI). This feature allows the IS230SRTDH2A to deliver stable temperature readings even when thermocouple or RTD extension cables run adjacent to high-current power lines.

• Fail-Safe Diagnostic Logic: The module continuously monitors for open-circuit or short-circuit conditions in the field wiring. If an RTD fails, the IS230SRTDH2A instantly triggers a diagnostic alarm and forces the output to a pre-defined safe state, preventing the turbine control logic from reacting to "frozen" or erroneous data.

• Rugged DIN-Rail Construction: The H2A revision features a compact, vibration-resistant housing designed for direct DIN-rail mounting. This simplifies installation in distributed I/O cabinets and allows for rapid module replacement during scheduled maintenance outages.

FAQs

Q: Can I connect 2-wire RTDs to the IS230SRTDH2A?

A: While the module primarily supports 3-wire and 4-wire RTDs to ensure lead-wire compensation, you can connect 2-wire sensors by installing jumpers at the terminal block. Note that this configuration may introduce small measurement errors based on the cable length and resistance.

Q: How does the "Simplex" designation affect system redundancy?

A: The "Simplex" designation (S-group) means the module provides a single path for the signal. It is ideal for auxiliary monitoring or non-critical protection. For safety-critical TMR (Triple Modular Redundant) loops, we recommend using the redundant TRTD variants that interface with three separate I/O packs.

Q: Is the IS230SRTDH2A compatible with Nickel or Copper RTDs?

A: This module is factory-optimized for Platinum 100 Ω RTDs (DIN curves). If your application requires Nickel or Copper sensor support, you must verify the software configuration in ToolboxST to ensure the linearization table matches the sensor's alpha coefficient.

Q: Does the module require an external power supply for the RTDs?

A: No. The IS230SRTDH2A provides the necessary excitation current to the RTD sensors from its internal 28 V DC supply, ensuring a self-contained measurement loop.