GE D20ME-VME WESDAC D20ME VME Bus Main Processor Module

Description

Technical Specifications

• Manufacturer: General Electric (GE Vernova, Grid Solutions)
• Model Number: D20ME-VME
• Processor Core: 32-bit Freescale 68030 microprocessor, 40 MHz clock
• Memory: 2 MB Flash memory, 2 MB SRAM, 512 KB NVRAM
• Real-Time Clock: 1.0 ms resolution, ±2 ppm accuracy (TCXO)
• Communication Interfaces:
  • 7 × configurable RS-232/RS-485 serial ports
  • 1 × RS-232 maintenance port
  • 2 × D.20 Link HDLC ports (for D20 I/O modules)
  • 2 × Ethernet ports (TCP/IP, Modbus)
• Bus Interface: VME64x compliant, 16/32-bit data transfer, up to 40 MB/s throughput
• Power Supply: 5 V DC (VME bus), 10–36 V DC auxiliary (dual redundant)
• Operating Temperature: -40°C to +85°C (-40°F to +185°F)
• Storage Temperature: -55°C to +85°C (-67°F to +185°F)
• Humidity: 5%–95%, non-condensing
• Protection Class: IP20 (finger-safe connectors)
• Dimensions: 160 mm × 100 mm × 36 mm (6.3 in × 3.9 in × 1.4 in)
• Weight: 0.35 kg (0.77 lbs)
• Certifications: UL 508, CE, IEC 61131-2, CSA, ATEX II 3G EEx nL IIC T4

Key Features

1. High-Performance Processing & Real-Time Operation
   • 32-bit 68030 CPU delivers fast logic execution and data processing for complex control tasks
   • 2 MB Flash/2 MB SRAM supports large application programs and data buffers
   • Hardware-based real-time clock ensures precise synchronization for time-stamped data and event logging
2. Versatile & Isolated Communication
   • Seven software-configurable RS-232/RS-485 ports connect to IEDs, SCADA hosts, and third-party devices
   • Dual Ethernet ports support redundant network connectivity and TCP/IP, Modbus protocols
   • Isolated communication channels eliminate ground loops and enhance noise immunity in high-interference environments
3. VMEbus Compatibility & System Scalability
   • Fully compliant with VME64x standard, enabling integration into legacy and modern VME chassis
   • Supports up to 7 D20ME-VME modules in a D200 9-slot VME chassis for multi-processor redundancy
   • Controls up to 120 D20 I/O modules via D.20 Link ports for large-scale I/O expansion
4. Robust Industrial Reliability
   • Conformal-coated PCB protects against dust, moisture, and chemical contaminants
   • Military-grade components deliver 100,000+ hours MTBF in high-vibration and extreme temperature environments
   • Dual redundant auxiliary power inputs prevent system shutdown due to power supply failure
5. Advanced Diagnostics & Maintenance
   • Embedded self-diagnostics monitor CPU, memory, and communication health in real time
   • LED status indicators for power, activity, and fault conditions enable quick on-site troubleshooting
   • RS-232 maintenance port supports local firmware updates and configuration via terminal or PC

Application Scenarios

• Power Generation: Thermal, hydro, and renewable power plants for turbine control, generator protection, and interlocking systems
• Electrical Substations: Transmission and distribution substations as RTUs, providing SCADA data acquisition, control, and fault monitoring
• Oil & Gas: Upstream drilling platforms, midstream pipeline pump stations, and downstream refineries for process control and safety shutdown systems
• Water & Wastewater: Municipal and industrial treatment plants for pump, valve, and chemical feed automation
• Heavy Manufacturing: Steel, automotive, and aerospace facilities for assembly line control, material handling, and process monitoring
• Legacy System Migration: Integration of existing VME-based control systems with modern Ethernet networks and SCADA platforms

Additional Information

• Condition: Brand new, original factory sealed packaging
• Warranty: 12-month manufacturer warranty
• Country of Origin: United States
• Lead Time: 4–6 weeks (in-stock units available)
• Compatibility: Fully interoperable with GE D20 I/O modules, D20 termination boards, and D200 VME chassis