Description
The IS215ACLEH1BB is an enhanced Analog Control Logic Engine module developed by GE Vernova for the Mark VIe turbine control system platform. This advanced controller represents the evolution of GE’s analog control technology, providing superior processing capabilities for complex control algorithms in modern power generation applications. The IS215ACLEH1BB functions as a specialized computing engine dedicated to executing sophisticated analog control loops, sequencing logic, and regulatory algorithms that govern critical turbine operations. Building upon the foundation of earlier ACLE modules, the IS215ACLEH1BB incorporates improved processing power, expanded memory capacity, and enhanced communication capabilities to meet the increasing demands of advanced turbine control strategies and integration requirements in combined cycle and peaking power applications.
As a core component within the Mark VIe system architecture, the IS215ACLEH1BB demonstrates GE’s commitment to technological innovation in turbine control systems. The module operates as part of a distributed control architecture, communicating with other system components through high-speed Ethernet networks while maintaining deterministic control execution for time-critical functions. The IS215ACLEH1BB is engineered to handle the most demanding control applications, including adaptive combustion control, complex valve management systems, and coordinated control strategies that optimize turbine performance across varying load conditions and fuel compositions. The module’s robust design ensures reliable operation in the challenging environment of power generation facilities, where temperature extremes, electrical noise, and continuous operation requirements demand exceptional durability and performance stability. The enhanced capabilities of the IS215ACLEH1BB enable implementation of advanced control strategies that maximize efficiency, reduce emissions, and extend equipment life while maintaining the reliability and protection standards expected from GE’s Speedtronic platform.

IS215ACLEH1BB GE
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | IS215ACLEH1BB |
| Manufacturer | GE Vernova |
| Product Type | Analog Control Logic Engine |
| Series | Mark VIe Turbine Control System |
| Processor Type | Enhanced PowerPC or equivalent RISC processor |
| Processor Speed | Higher clock frequency than previous versions |
| Memory Capacity | 512MB RAM (expandable) |
| Non-Volatile Storage | 1GB Flash memory for application storage |
| Control Loop Capacity | 150+ analog control loops |
| Scan Time | Deterministic execution down to 5ms |
| Communication Ports | Dual 100/1000Base-T Ethernet ports |
| Network Protocols | SRTP, UDP/IP, TCP/IP, Modbus TCP |
| Backplane Interface | High-speed PCI-X communication |
| Operating Temperature | -40°C to +70°C (-40°F to +158°F) |
| Power Requirements | 3.3V DC, 5V DC via system backplane |
| Power Consumption | 30W maximum power dissipation |
| Relative Humidity | 5% to 95% non-condensing |
| Vibration Resistance | 2g operational, 5g survival |
Main Features and Advantages
The IS215ACLEH1BB delivers superior control performance through its enhanced processing architecture and advanced functional capabilities. The module executes complex control algorithms with improved deterministic timing, ensuring precise loop performance even during rapid transients. The IS215ACLEH1BB supports an expanded set of control function blocks including advanced PID with fuzzy logic capabilities, model predictive control elements, and sophisticated sequencing functions that enable complex startup and shutdown sequences. The module’s increased memory capacity allows for more extensive historical data collection, larger application programs, and enhanced diagnostic capabilities. The IS215ACLEH1BB features improved signal processing algorithms that provide better noise immunity and more accurate measurement validation, enhancing control reliability during dynamic operating conditions.
Enhanced connectivity and system integration: The IS215ACLEH1BB offers improved communication capabilities with higher-speed Ethernet ports and support for additional industrial protocols, facilitating better integration with plant-wide control systems and third-party equipment. The module’s enhanced processing power enables more sophisticated data exchange and coordination with other controllers in distributed applications. The IS215ACLEH1BB includes advanced cybersecurity features that help protect critical control functions from unauthorized access while maintaining operational flexibility. The module supports enhanced diagnostics and predictive maintenance capabilities through more detailed equipment health monitoring and trend analysis functions. The IS215ACLEH1BB maintains backward compatibility with existing I/O modules and system configurations while providing a migration path for implementing advanced control strategies and expanded system functionality.
Application Field
The IS215ACLEH1BB finds extensive application in advanced power generation systems requiring sophisticated control capabilities and high reliability. In modern gas turbine applications, the module executes complex combustion control algorithms that adapt to varying fuel characteristics while maintaining low emissions and high efficiency across the operating range. The IS215ACLEH1BB manages advanced control strategies for DLN (Dry Low NOx) combustion systems, compressor surge protection, and turbine temperature control that are critical for meeting environmental regulations and maximizing equipment life. The module’s enhanced processing capabilities make it particularly valuable in flexible operation scenarios where rapid load changes and frequent starts require sophisticated control responses to maintain equipment integrity.
In combined-cycle power plants, the IS215ACLEH1BB enables coordinated control between gas turbines, steam turbines, and balance-of-plant systems, optimizing overall plant efficiency during varying load conditions. The module’s expanded memory and communication capabilities support the implementation of advanced performance calculation and optimization routines that continuously adjust control parameters to maximize efficiency. The IS215ACLEH1BB is also deployed in specialized applications including mechanical drive turbines for pipeline compression and industrial processes where precise speed control and anti-surge protection are critical for operational safety and efficiency. The module’s robust design and enhanced capabilities make it suitable for implementation in critical control applications where reliability, precision, and advanced functionality are essential for meeting operational and regulatory requirements in today’s demanding power generation environment.

IS215ACLEH1BB GE
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