GE D20MXACUUUAFUUUU

GE D20MXACUUUAFUUUU

Product Introduction
The GE D20MXACUUUAFUUUU is a high-performance, non-VME Remote Terminal Unit (RTU) processor module designed for substation automation and industrial data acquisition. It serves as the central data concentrator and processing core within the GE D20 RTU system, capable of consolidating data from multiple slave devices and I/O modules into a single, unified database.

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Description

GE D20MXACUUUAFUUUU

Technical Specifications

  • Processor Core: 667 MHz embedded PowerQUICC II Pro processor.
  • Memory: 1024 MB of 266 MHz DDR2 RAM with ECC.
  • Storage: 8 MB boot flash and 256 MB firmware flash.
  • Non-Volatile Storage: 16 MB NVRAM for persistent event storage.
  • Operating System: VxWorks Real-Time Operating System.
  • Network Interface: Dual redundant 10/100/1000BASE-T Ethernet ports (front access).
  • Serial Communications: 7 channels of RS-232 and 2 channels of D.20 Link.

Functional Features

  • Data Consolidation: Gathers field data through peripheral modules and external Intelligent Electronic Devices (IEDs) for centralized processing.
  • NERC CIP Compliance: Designed to meet North American Electric Reliability Corporation Critical Infrastructure Protection standards.
  • Hot-Swappable Peripherals: Allows for the replacement of peripheral I/O boards without powering down the main processor.
  • Redundant Communications: Dual Ethernet interfaces ensure continuous network connectivity and high availability.

Application Scenarios
Extensively deployed in power generation substations, utility grid automation, renewable energy monitoring, and distributed industrial control systems.

Performance Parameters

  • Ethernet Speed: Gigabit Ethernet (10/100/1000BaseT) with isolated RJ-45 connectors.
  • Serial Data Rate: D.20 Link operates at 250 kbps with ±2000 V peak surge protection.
  • Maintenance Port: RS-232 operating at a default data rate of 19200 bps.

Material Composition
Constructed with industrial-grade multi-layer printed circuit boards, high-speed DDR2 memory modules, and ruggedized embedded processors designed for continuous operation.

Structural Characteristics
Standard 3U tall, 19-inch wide horizontally mounted chassis form factor. Features front-panel LED indicators for system status, Ethernet link/activity, power supply, and IRIG synchronization.

Working Principle
The processor executes VxWorks applications to poll connected IEDs and peripheral modules via serial and Ethernet links. It stores the acquired data in its internal database and communicates with master stations or SCADA systems using standard utility protocols.

Installation Requirements

  • Must be installed in a compatible D20 non-VME chassis (e.g., GE part number 500-0305).
  • Connect the earth ground wire (14 AWG green wire) to a low-impedance ground rail before applying power.
  • Connect power supply inputs to the backplane connector block TB1.

Usage Precautions

  • Turn off all power supplying the equipment before installing or wiring the module.
  • Do not power up the D20MX before establishing a proper protective earth connection.
  • Ensure all serial cables used for permanent connections are shielded and utilize metallized connector covers for EMC compliance.

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