Description

Professional Product Description: GE IS200TPROH1B

Detailed Parameter Table

IS200TPROH1B

Product Introduction

The IS200TPROH1B is a high-integrity turbine protection module developed by GE for its Mark VIe Speedtronic control system. This safety-critical component serves as the primary protection device for gas, steam, and combined-cycle turbines, specializing in overspeed protection and critical parameter monitoring.

Unlike general-purpose I/O modules, the IS200TPROH1B features a Triple Modular Redundancy (TMR) architecture with voting logic that ensures reliable operation even in the presence of component failures. This design prevents both false trips and failure-to-trip scenarios, which are critical in turbine protection applications.

The IS200TPROH1B continuously monitors turbine speed through four high-speed inputs that can accept signals from magnetic pickup sensors or other speed transducers. It also monitors other critical parameters through its analog and digital inputs, including vibration levels, bearing temperatures, and valve positions. When abnormal conditions are detected, the module initiates appropriate protective actions ranging from warnings to full turbine shutdowns.

Core Advantages and Technical Highlights

High-Speed Overspeed Detection: The IS200TPROH1B can detect overspeed conditions in less than 1 millisecond, providing the rapid response necessary to prevent catastrophic turbine damage. Its high-speed inputs can process signals from multiple redundant speed sensors simultaneously.

Triple Modular Redundancy: The module’s TMR architecture with voting logic ensures that single-point failures cannot cause either a false trip or a failure to trip when required. This design meets the most stringent safety requirements for turbine protection systems.

Comprehensive Monitoring Capabilities: With 4 speed inputs, 8 analog inputs, and 16 digital inputs, the IS200TPROH1B can monitor a wide range of turbine parameters. This allows for a complete protection scheme that addresses multiple failure modes.

Flexible Output Configuration: The module provides 8 relay outputs and 4 solid-state outputs that can be configured for various protection functions. This flexibility allows the IS200TPROH1B to interface with different types of turbine control and shutdown systems.

Self-Diagnostics: The IS200TPROH1B includes extensive self-diagnostic capabilities that continuously monitor module health. This allows for proactive maintenance and ensures the module is always ready to perform its protection functions when needed.

Typical Application Scenarios

In coal-fired power plants with large steam turbines, the IS200TPROH1B serves as the primary overspeed protection device. It continuously monitors turbine speed through redundant magnetic pickup sensors mounted on the turbine shaft. If the speed exceeds predetermined thresholds (typically 103%, 105%, and 110% of rated speed), the module initiates appropriate protective actions.

For example, during a load rejection event where the turbine suddenly loses its electrical load, the IS200TPROH1B would detect the resulting overspeed condition and immediately initiate a turbine trip. This action would close the steam admission valves within milliseconds, preventing potentially catastrophic damage to the turbine.

In combined-cycle power plants, the IS200TPROH1B works in conjunction with gas turbine protection systems to ensure coordinated shutdowns. It can receive interlock signals from other plant systems and initiate turbine trips when necessary, ensuring the safety of both the gas and steam turbines.

The IS200TPROH1B is also essential in industrial applications such as large compressors and pumps driven by turbines. In these applications, the module provides critical overspeed protection and monitors other parameters such as bearing temperatures and vibration levels to prevent equipment damage.

Related Model Recommendations

IS200STTCH2A – Steam turbine trip control module that works with the IS200TPROH1B to provide comprehensive turbine protection.

IS200STURH1A – Turbine speed control and synchronization module that pairs with the IS200TPROH1B for speed regulation and monitoring.

IS200STCIH4A – Steam turbine control interface module that provides additional I/O capabilities for complex protection schemes.

IS200DTAIH1A – Digital input module that can expand the monitoring capabilities of the IS200TPROH1B system.

IS200DTACH1A – Digital output module that complements the IS200TPROH1B for applications requiring additional output channels.

IS200EACFG2A – Configuration module that stores the IS200TPROH1B’s program and parameters, enabling quick replacement.

IS200EHBQG2A – Backplane module that provides power and communication connectivity for the IS200TPROH1B within the Mark VIe system.

IS200JGNDG1A – Grounding module that enhances signal integrity for the IS200TPROH1B by reducing noise and preventing ground loops.

IS200TPROH1B

Installation, Commissioning and Maintenance Instructions

Installation preparation: Before installing the IS200TPROH1B, ensure the Mark VIe backplane is powered down. Verify that the operating environment meets the module’s specifications (-40°C to +85°C). Use ESD-protective equipment during handling. Confirm that the backplane slot is compatible with protection modules and that the 24VDC power supply meets the required specifications (±10% tolerance).

For sensor wiring, use shielded twisted-pair cables appropriate for the signal type. Follow GE’s wiring guidelines for proper grounding and signal routing to minimize noise interference. Each channel should be clearly labeled to facilitate troubleshooting and maintenance.

Commissioning: After physical installation, configure the IS200TPROH1B using GE’s ToolboxST software. Set up the input channels for the specific sensors being used, configure trip setpoints and logic, and verify communication with the main controller. Perform functional tests to ensure all protection functions operate correctly, including testing of the manual trip buttons.

Maintenance suggestions: Regularly monitor the IS200TPROH1B status through the Mark VIe HMI. Review diagnostic information to identify any potential issues with the module or connected sensors. Perform periodic testing of the protection functions to ensure they operate correctly when needed. Keep firmware updated to the latest version recommended by GE.

If a failure occurs, follow proper lockout/tagout procedures before replacement. Always use GE-approved replacement parts to ensure system compatibility and safety integrity. Periodically inspect wiring connections for tightness and corrosion, especially for the critical speed sensor inputs.

Service and Guarantee Commitment

The IS200TPROH1B comes with a 2-year standard warranty from GE, covering defects in materials and workmanship. GE’s global service network provides comprehensive support for the IS200TPROH1B, including technical assistance, repair services, and spare parts availability.

GE offers 24/7 technical support for the IS200TPROH1B, with specialists available to assist with installation, configuration, and troubleshooting. Customers have access to GE’s extensive library of technical documentation, including user manuals, application notes, and best practices guides for safety system implementation.

For mission-critical applications, GE provides extended warranty options and preventive maintenance services to ensure the IS200TPROH1B operates at peak performance throughout its service life. GE’s commitment to quality ensures that the IS200TPROH1B will provide reliable protection in even the most demanding power generation environments.