Description
3. Key Technical Specifications
- Part Number: D20 EME / D20EME
- System: GE Multilin D20 / D200 Substation Controllers
- Function: Provides Ethernet connectivity and additional system memory
- Ethernet Interface: 10Base-T (with appropriate Media Interface Card)
- Memory Options: 8MB or 16MB expansion kits available
- Mounting: VME slot in D20 chassis
- Compatibility: Supports D20ME processor boards
- Features: Enables network communication for SCADA and automation protocols
- Redundancy: Supports redundant configurations
- Application: Substation RTU and gateway systems
- Media Interface: Requires separate MIC for 10Base-T, 10Base-FL, or other options
4. Product Introduction & Supply Chain Strategy
The GE D20 EME is an Ethernet and memory expansion board that adds network connectivity and increased memory capacity to D20 substation controllers and RTUs. It enables modern Ethernet-based SCADA communications while supporting expanded application logic in substation automation.
New Surplus units provide a reliable path to maintain aging D20 installations facing end-of-life pressures. This strategy reduces stock-out risks during lead time variability, avoids refurbished risks in critical infrastructure, and supports vendor consolidation. It improves total cost of ownership by extending system life without full platform migrations.
5. Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety) Lock-out/tag-out power to the D20 chassis. Use ESD protection and photograph existing board positions, jumper settings, and cable connections. Back up current configurations using SGConfig or equivalent tools.
Stage 2: Removal Power down the chassis. Remove the old board or empty slot cover from the designated Ethernet/memory slot. Note slot numbering for proper replacement.
Stage 3: Installation (Clone & Seat) Insert the new D20 EME board into the correct VME slot and secure it. Install the appropriate Media Interface Card (MIC) for your Ethernet media type. Reconnect any associated cables.
Stage 4: Power-On & Testing Restore power and check board LEDs for normal status. Verify Ethernet link and IP communication. Download configuration and test SCADA connectivity and memory utilization.
- D20 EME
- D20 EME
6. Firmware/Software Versions & Upgrade Notes
The D20 EME board itself does not run independent firmware but works with the main D20ME processor firmware and system configuration. Ensure the D20 system firmware supports the added Ethernet and memory features.
Adding or replacing the EME board may require configuration updates but typically does not need new firmware on the processor. Validate compatibility in redundant setups and perform full system testing after changes to confirm protocol operation and data integrity.
7. Frequently Asked Questions (FAQ)
Q: Is the D20 EME a genuine New Surplus board? Yes. This is original GE stock, never field-installed, with full traceability and quality verification.
Q: Why buy New Surplus instead of refurbished for D20 components? Legacy substation systems require high reliability. Refurbished boards can introduce memory or Ethernet failures that disrupt SCADA communications and create costly troubleshooting.
Q: Is the D20 platform obsolete? D20 systems are mature with end-of-manufacturing notices on certain components. Strategic stocking of expansion boards like the EME helps sustain operations while planning future migrations.
Q: What memory and Ethernet options are available? The board supports 8MB or 16MB memory kits and works with 10Base-T or fiber Media Interface Cards depending on your network requirements.
Q: Does this support redundant configurations? Yes. The D20 system with EME boards can be configured for redundancy to maintain availability.
Q: What warranty is included? We provide a 1 year warranty on this New Surplus expansion board for defects and performance under normal substation conditions.
Q: How do I integrate it into my existing D20? Install in the appropriate VME slot, add the correct MIC, update configuration files, and test network communications. Consult the D20 Installation and Operation Guide for slot-specific details.
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