IS230TNRTH1D - Simplex Thermocouple RTD Input Module

SPECIFICATIONS:

Part Number: IS230TNRTH1D
Manufacturer: General Electric
Series: Mark VIe
Module Type: Simplex Thermocouple and RTD Input Terminal Board
Function: Simplex Thermocouple RTD Input Module
Supported RTD Types: Pt100, Pt200, Pt1000, Cu10, Ni120
Supported Thermocouple Types: J, K, T, E, N
RTD Lead Compensation: 3-wire
Number of Inputs: 3 x 4 Voltage
Number of Outputs: 2 trip
Temperature: -30 to 65°C
Mounting Type: DIN Rail
MPU pulse rate range: 2 Hz to 20 kHz
MPU pulse rate accuracy: 0.05%
Number of outputs: 2 trip contacts
MPU input circuit sensitivity: 27 mV pk
Availability: In Stock
Size: 33.0 cm x 17.8 cm
Technology: Surface mount
Country of Manufacture: United States (USA)

FUNCTIONAL DESCRIPTION:

IS230TNRTH1D is a Simplex Thermocouple RTD Input Module manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. It acquires temperature signals from RTDs and thermocouples, performs signal conditioning, linearization, and cold junction compensation, and provides diagnostics for open circuits, short circuits, and abnormal resistance. It interfaces with PRTD and PTCC I/O packs, which digitize the conditioned signals and transmit them to the controller over the Ethernet-based I/O network. Designed for Simplex operation, it supports 3-wire and 4-wire RTD configurations and standard thermocouple types, ensuring accurate, reliable temperature measurement for turbine and auxiliary system monitoring.

Each channel is monitored for continuity and integrity, with diagnostics for open circuits, short circuits, and abnormal resistance values. The module conditions the analog inputs before passing them to the associated I/O packs (PTCC for thermocouples and PRTD for RTDs), which perform analog-to-digital conversion and forward the data over the Ethernet-based Mark VIe I/O network. The Simplex design provides a single signal path for each channel, supporting applications where redundancy is not required but precise measurement and reliable monitoring are critical.

COMPATIBILITY:

The IS230TNRTH1D is fully compatible with the GE Mark VIe control system architecture. It is designed to interface with the PTCC (thermocouple) and PRTD (RTD) I/O packs, which provide digitization and communication to the controller. The module supports a broad range of industry-standard RTDs and thermocouples, ensuring adaptability to diverse turbine and auxiliary system installations.

Physically, the board is designed for DIN rail mounting within turbine control panels and follows the same wiring, termination, and diagnostic conventions as other Mark VIe terminal boards. It is intended for Simplex applications, where a single signal path per channel is sufficient, and integrates seamlessly with the Mark VIe’s distributed I/O framework, including its diagnostic and monitoring capabilities.

INSTALLATION:

First, verify compatibility with the control system and the thermocouples or RTDs you will use. Mount the module securely in a control cabinet, ensuring proper ventilation. Connect the sensors to the appropriate input terminals, adhering to the specified wiring configuration, and ensure correct grounding. Connect the module to the required power supply and set up communication interfaces with the control system. After physical installation, configure the module using the system software, assign input channels, and verify settings. Finally, conduct tests to confirm accurate temperature readings and inspect all connections for security before operating the system.

OPERATION:

Temperature sensors are directly wired to the board, where the inputs are terminated and conditioned. For RTDs, the module measures resistance changes proportional to temperature and applies compensation for lead wire resistance in 3-wire and 4-wire configurations. For thermocouples, the module processes millivolt-level signals and applies cold junction compensation to correct for the terminal block reference temperature. All signals undergo filtering and linearization to convert raw sensor characteristics into calibrated engineering units.

Once conditioned, the signals are routed to the appropriate I/O pack. The PRTD I/O pack digitizes RTD inputs, and the PTCC I/O pack digitizes thermocouple inputs. These digitized values are then transmitted via the Mark VIe’s high-speed Ethernet I/O network to the controller for use in real-time turbine monitoring, protection, and control functions. Built-in diagnostics continuously verify sensor status, ensuring accurate temperature feedback for both normal operation and fault detection.

WOC maintains one of the largest inventories of OEM replacement parts for GE Distributed Turbine Control Systems. In addition to supplying new and unused components, we specialize in repairing faulty boards and providing fully tested, rebuilt units, all backed by a comprehensive warranty for reliability and peace of mind.

Our team of experienced automation experts is available 24/7 to support your operational and OEM needs, ensuring minimal downtime and continuous system performance. Whether you require parts for immediate replacement, repair services, or technical guidance, WOC is committed to providing timely and professional support. For detailed information on pricing, availability, or repair services, please reach out to our team via phone or email, and we will assist you promptly.

FREQUENTLY ASKED QUESTIONS:

What is a Simplex Thermocouple RTD Input Module?

A Simplex Thermocouple RTD Input Module is a device used in industrial control systems to measure temperature by interfacing with thermocouples and resistance temperature detectors (RTDs). It converts analog temperature signals into digital data for monitoring and control.

What types of temperature sensors can be used with this module?

This module is compatible with various types of thermocouples (e.g., Type J, K, T) and RTDs (e.g., PT100), allowing flexibility in temperature measurement depending on the application.

What is the difference between simplex and redundant modules?

A simplex module operates independently without backup, while a redundant module includes multiple units for increased reliability. Simplex modules are typically used in applications where redundancy is not necessary.