Name: GE IS215ACLEH1A
Brand: GE
SKU: GE IS215ACLEH1A

GE IS215ACLEH1A

Product Overview The IS215ACLEH1A is an Application Control Layer Module (ACLE) designed for the Mark VIe distributed control system. It serves as the primary control processor, executing turbine control algorithms, sequencing logic, and protection functions in real-time.

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Category: GE SKU: GE IS215ACLEH1A

Description

GE IS215ACLEH1A

Technical Specifications

Parameter	Specification
Function	Primary Control Processor
System Compatibility	Mark VIe Distributed Control System
Processor Type	High-performance industrial processor
Operating System	Real-time operating system (QNX or equivalent)
Memory	Onboard RAM and flash storage
Communication	Ethernet, IONet, serial interfaces
Redundancy	Supports triple modular redundancy (TMR)
Execution Speed	Sub-millisecond control loop execution
Board Dimensions	Standard Mark VIe module form factor
Operating Temperature	0°C to 60°C (32°F to 140°F)
Storage Temperature	-40°C to 85°C (-40°F to 185°F)
Power Requirements	24V DC or 125V DC (system dependent)

Functional Features

Real-Time Control: Executes control algorithms with deterministic timing
Triple Modular Redundancy: Supports TMR configuration for highest safety integrity level (SIL 3)
Automatic Fault Tolerance: Built-in voting logic for fault detection and isolation
Online Configuration: Supports online modification of control parameters without shutdown
Comprehensive Diagnostics: Self-monitoring with detailed diagnostic reporting
Sequence of Events: High-resolution event recording for post-trip analysis
Communication Gateway: Interfaces with plant DCS and supervisory systems

Structural Characteristics

Industrial-grade processor module with conformal coating
High-reliability components with extended temperature ratings
Multiple communication ports on front panel
Status LED indicators for processor health and activity
Key-switch for local/remote mode selection
Compact flash or SD card slot for program storage

Working Principle The ACLE module executes the turbine control application software, which includes:

Speed Control: PID control of turbine speed using governor algorithms
Load Control: Automatic generation control and load limit management
Temperature Control: Exhaust temperature control and overtemperature protection
Sequence Control: Automatic startup, shutdown, and emergency trip sequencing
Protection Logic: Overspeed, vibration, and other protective trip functions

In TMR configuration, three ACLE modules execute identical software simultaneously. A voting circuit compares outputs and isolates any module that disagrees with the majority, ensuring continuous safe operation even with a single module failure.

Installation Requirements