Description

The part number IS230TNRLH1B corresponds to an industrial control component manufactured by General Electric (GE).

Product Specifications

• Manufacturer: General Electric (GE)

• Product Series: Mark VIe Distributed Control System (DCS)

• Description: Relay Output DIN-Rail Module (TNR_ / TRLH type)

• Number of Outputs: 16 digital relay outputs

• Output Ratings: Supports 24V DC, 120V AC, and 240V AC

• Safety / Compliance: Designed for high-reliability applications, featuring optical isolation and compliance with safety standards (such as SIL 2 / SIL 3 capability).

• Application: Used extensively in GE gas and steam turbine management systems, power generation plants, and critical heavy industrial automation infrastructure to interface low-power control signals with high-power operational loads.

GE IS230TNRLH1B Relay Output DIN Rail Module Product Description

Product Overview

GE IS230TNRLH1B is a Relay Output DIN Rail Module designed for GE Mark VIe and Mark VIeS distributed turbine control systems. As a high-reliability discrete output interface module, GE IS230TNRLH1B provides relay switching, solenoid control, electrical isolation, and field device interface functions between the Mark VIe controller and turbine auxiliary equipment. The module is part of the GE Speedtronic turbine control platform and is widely used in gas turbine, steam turbine, and power generation automation applications requiring dependable output control.

The GE IS230TNRLH1B belongs to the Mark VIe TMR (Triple Modular Redundant) I/O module family and integrates relay terminal functions with dedicated I/O packs to provide flexible and reliable discrete output capability. Within the turbine control architecture, GE IS230TNRLH1B acts as an interface between digital control logic and external field devices such as valves, contactors, solenoids, ignition transformers, and auxiliary motors. The module supports redundant control architectures and provides monitoring functions to improve system availability and fault diagnosis capability.

Designed for critical industrial environments, GE IS230TNRLH1B combines DIN rail installation, modular relay architecture, and integrated diagnostic functions. The module incorporates a relay terminal board with plug-in magnetic relays and associated I/O packs, allowing convenient installation, replacement, and maintenance in GE turbine control cabinets. With its robust electrical design and compatibility with Mark VIe systems, GE IS230TNRLH1B is an important spare component for maintaining long-term operation of GE turbine automation platforms.

Technical Specifications

Main Features and Advantages

Reliable relay output control:

The primary function of GE IS230TNRLH1B is to provide dependable relay-based output control for GE turbine automation systems. In turbine applications, many critical devices require isolated switching signals, including fuel valves, hydraulic components, ignition systems, and auxiliary equipment. GE IS230TNRLH1B provides a robust interface between low-level controller signals and field-level electrical loads.

Flexible relay configuration:

GE IS230TNRLH1B integrates twelve plug-in magnetic relays, allowing engineers to configure different output requirements according to application needs. The first six relays can be jumper-configured for dry Form-C relay outputs or external solenoid drive applications, providing flexibility for different turbine packages and auxiliary systems.

TMR high-availability design:

One of the key advantages of GE IS230TNRLH1B is its support for GE Mark VIe TMR architecture. The module uses three PDOA I/O packs to provide redundant processing and communication capability. This design improves system fault tolerance and ensures continued turbine operation even when individual hardware failures occur.

IS230TNRLH1B

Advanced diagnostic capability:

GE IS230TNRLH1B includes multiple monitoring functions such as relay contact voltage monitoring, solenoid excitation voltage monitoring, and hardware compatibility checking. These diagnostic features help maintenance engineers quickly identify wiring problems, relay failures, and abnormal operating conditions.

Industrial-grade electrical protection:

Turbine control systems often experience electrical disturbances caused by switching operations, motors, and power equipment. GE IS230TNRLH1B incorporates protective components and isolation design to improve resistance against electrical interference and protect connected control equipment.

DIN rail modular installation:

The DIN rail mounting structure of GE IS230TNRLH1B simplifies cabinet installation and maintenance. Engineers can quickly install or replace the module without requiring complex mechanical modifications, reducing maintenance time during turbine outages.

Improved system availability:

By providing reliable relay switching and field device control, GE IS230TNRLH1B improves the overall availability of turbine control systems. Stable output operation helps prevent unnecessary trips and ensures accurate execution of turbine control commands.

Long lifecycle support:

Many GE Mark VIe turbine control systems operate for decades in power generation facilities. GE IS230TNRLH1B provides a reliable replacement solution that allows operators to maintain existing turbine automation infrastructure and extend equipment service life.

Application Areas

Gas Turbine Control Systems:

GE IS230TNRLH1B is widely applied in gas turbine control systems where reliable relay outputs are required for controlling fuel systems, valves, ignition equipment, and auxiliary devices. It provides stable output execution within GE Mark VIe turbine automation architectures.

Steam Turbine Automation:

Steam turbine systems require precise control of mechanical and electrical auxiliary equipment. GE IS230TNRLH1B supports relay-based switching functions for actuators, protection circuits, and auxiliary control devices.

Combined Cycle Power Plants:

Combined-cycle facilities depend on coordinated operation between gas turbines, steam turbines, and balance-of-plant systems. GE IS230TNRLH1B helps provide reliable output control for distributed turbine automation systems.

Generator Auxiliary Systems:

Generator packages include numerous electrically controlled devices requiring isolated relay outputs. GE IS230TNRLH1B supports dependable switching for auxiliary equipment and protection-related functions.

Oil and Gas Industrial Applications:

Gas turbines used for compressors and mechanical drive systems require high reliability and fast response. GE IS230TNRLH1B provides stable control interfaces for critical field equipment in oil and gas facilities.

Turbine Retrofit and Maintenance Projects:

For existing GE Mark VIe installations, GE IS230TNRLH1B is commonly used as a replacement module during maintenance activities. It enables restoration of original control functionality while reducing downtime and avoiding unnecessary system upgrades.

Related Products

• GE IS200TRLYH1BHH – Relay Output Terminal Board associated with IS230TNRLH1B, providing relay connection functions.
• GE IS220PDOAH1B – Discrete Output Pack used with IS230TNRLH1B for Mark VIe I/O processing.
• GE IS230TNRLH1E – Updated relay output DIN rail module variant within the same Mark VIe family.
• GE IS230TNRLH1F – Alternative relay output module version for Mark VIe systems.
• GE IS230TNCIH3C – Contact Input DIN Rail Module for Mark VIe discrete signal acquisition.
• GE IS230TNDTH2A – Discrete TMR DIN Rail Module for Mark VIe digital I/O applications.
• GE IS230TNTRH1C – Turbine protection DIN rail assembly used in Mark VIe systems.
• GE IS220PDOAH1BE – Mark VIe discrete output I/O pack with enhanced functionality.