Description

GE MPU55 OnCore Controller Module

Technical Specifications

• Product Model: MPU55
• Brand: GE Vernova (GE Power)
• Warranty: One Year
• Input Voltage: 21.6‑26.4 VDC rack supply
• Operating Temperature: ‑40 °C ~ +70 °C
• Storage Temperature: ‑55 °C ~ +85 °C
• Response Time: Real‑time control cycle down to 250 µs
• Protection Class: IP20 plug‑in euro‑card module
• Accuracy Class: Turbine & machinery control processing grade
• Output Frequency: Not applicable
• Rated Current: 1.1 A @24 VDC typical consumption
• Processor: PowerPC real‑time CPU; 256 MB RAM; 512 MB flash non‑volatile storage
• Communication Ports: Multiple 10/100 Mbps Ethernet ports for control network & HMI links
• System Compatibility: GE Nexus OnCore machinery control system for gas‑turbine and prime‑mover controls
• Function: Main processing unit executing closed‑loop speed, load and auxiliary control algorithms for rotating‑machinery packages; supports redundant controller architecture
• Diagnostics: Multi‑colour RUN / FAULT / STATUS LED array, extensive self‑diagnostic fault registers
• Certifications: ATEX Ex ec nC IIC T4 Gc, CE, IEC 61508 functional‑safety capable
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 1.25 kg
• Dimensions: Standard OnCore chassis single‑slot module footprint
• 

Product Overview

MPU55 is the main processor module for GE Nexus OnCore machinery‑control platform, designed for gas‑turbine, steam‑turbine and generator package control applications in power‑generation and oil‑gas compression installationsGE Vernova. High‑speed real‑time operating system handles critical closed‑loop control, sequence logic and interlock protection functions. Multiple isolated Ethernet interfaces separate control network, HMI and engineering‑tool traffic. Supports hot‑standby redundant controller configuration to enhance system availability. Discontinued legacy turbine‑control spare hardware available as refurbished and tested surplus units for power‑plant turbine‑control cabinet overhaul projects.

Application Notes

‑ Power‑off chassis before inserting or removing MPU55 module; enforce strict ESD anti‑static handling. ‑ Verify firmware revision compatibility with existing OnCore system configuration. ‑ Follow GE site maintenance procedure for redundant controller swap‑over tests. ‑ Typical deployment: power‑plant gas‑turbine OnCore controller spare‑part stocking.