Product Core Brief

• Model: D20 EME 2400-21004
• Brand: GE Energy / GE Intelligent Platforms
• Series: GE D20/D200 RTU Family
• Core Function: Ethernet and global memory expansion board for the GE D20/D200 remote terminal unit.
• Product Type: VME Expansion Board / Ethernet + Memory Module
• Condition: New Original / New Surplus (subject to available stock)

Key Technical Specifications

• Part Number: D20 EME 2400-21004 (EME = Ethernet/Memory Expansion)
• Platform: GE D20 / D200 Remote Terminal Unit (RTU)
• Function: Adds Ethernet communication capability and/or global memory expansion to the D20/D200 system
• Ethernet Interface: Supports 10BASE-T (RJ-45 twisted pair), with compatible Media Interface Cards also available for 10BASE2 (coaxial) and 10BASE-FL (fiber-optic)
• Bus Interface: VME bus compatible, installs in D20/D200 VME chassis
• Memory: Provides global memory expansion for the D20/D200 system (capacity depends on specific board variant)
• Configuration: Self-configuring board with no jumpers or switches required for VME interrupts, Ethernet address, or memory parameters
• Typical Application: Substation automation, SCADA data concentration, protocol conversion, and distributed RTU deployments

 

Product Introduction (No Fluff)

The D20 EME 2400-21004 is an Ethernet/Memory Expansion board for the GE D20/D200 remote terminal unit family. The D20 EME (Ethernet/Memory Expansion) kit is designed to add Ethernet communication capability and/or global memory expansion to D20 and D200 systems.

The D20/D200 is a ruggedized RTU platform widely deployed in electrical substations, supporting data concentration, protocol conversion, and local automation functions. The EME board enables the RTU to communicate over Ethernet networks using standard protocols, and provides additional global memory for larger configuration files, data logging, or application code.

The board is self-configuring — it requires no jumpers or switches to define VME interrupts, Ethernet bus address, or memory parameters. It installs in a D20 or D200 VME-compatible chassis and works with Media Interface Cards (MIC) for the physical Ethernet connection (10BASE-T, 10BASE2, or 10BASE-FL).

 

QA & Testing SOP (Dynamic & Transparent)

Expansion boards are critical for RTU communication and memory. Each surplus unit undergoes:

1. Part Number Verification: Confirm the label reads D20 EME 2400-21004. Check for GE Energy markings.
2. Visual Inspection: Inspect the VME connector edge, Ethernet port(s), PCB surface, and mounting hardware for corrosion, bent pins, or physical damage.
3. VME Connector Check: Verify the VME bus connector pins are intact, straight, and free of oxidation.
4. Ethernet Port Inspection: Check the RJ-45 port (or applicable MIC interface) for physical damage or bent contacts.
5. Mechanical Fit Check: Verify the board seats correctly into a compatible D20/D200 VME chassis slot.
6. Power-Up Test: Install in a known-good D20/D200 chassis. Verify board recognition and LED status indicators.
7. Ethernet Link Test: Where test infrastructure is available, verify Ethernet link establishment and communication.
8. Memory Verification: Where possible, verify global memory is recognized by the D20/D200 system via WESMAINT or Config Pro.
9. Packaging: Pack in anti-static bags with foam cushioning. Protect the VME connector edge and Ethernet port during transit.

 

Installation Pitfalls & Guide (Engineer to Engineer)

Confirm chassis compatibility. The D20 EME requires a VME-compatible D20 or D200 chassis. It will not fit in a non-VME D20 chassis.

Verify the Media Interface Card. The EME board itself provides the Ethernet controller; a separate Media Interface Card (MIC) is required for the physical Ethernet connection. Confirm you have the correct MIC type (10BASE-T, 10BASE2, or 10BASE-FL) for your network.

Check backplane vintage. Older D20 backplanes (vintage 4A or older) may require upgrading to vintage 5A or newer for compatibility with EME and other VME cards.

Do not exceed processor board limits. In systems with more than three processor boards, D20 M++ cards cannot be used with D20ME or D20EME cards due to stability issues.

Configure memory parameters in software. Although the board is self-configuring at the hardware level, global memory expansion parameters must be configured in Config Pro after installation.

Document slot assignment. Record which VME slot the EME board occupies. This simplifies troubleshooting and future replacements.

Verify redundant system compatibility. If used in a redundant D20/D200 configuration, confirm both CCUs have matching EME boards and configurations.

Installation Steps:

1. Pre-install: Confirm part number D20 EME 2400-21004 and VME chassis compatibility. Back up the existing D20/D200 configuration.
2. Power Down: De-energize the D20/D200 chassis before installing or removing VME boards.
3. Insert Board: Seat the EME board into an available VME slot. Verify full mechanical engagement.
4. Install MIC: Install the appropriate Media Interface Card for your Ethernet network type.
5. Commission: Power up the system. Configure global memory parameters in Config Pro. Verify Ethernet link and communication.

 

Technical FAQ

1. What is the D20 EME 2400-21004? It is an Ethernet/Memory Expansion board for the GE D20/D200 RTU platform, adding Ethernet communication and/or global memory capabilities.

2. Is EME a processor board? No. The EME is an expansion board. The main processor function is handled by the D20ME or D20ME II board. The EME adds Ethernet and memory expansion.

3. What Ethernet types does it support? The EME board works with Media Interface Cards supporting 10BASE-T (RJ-45), 10BASE2 (coaxial), and 10BASE-FL (fiber-optic).

4. Does it require jumpers or switches? No. The D20 EME is self-configuring with no jumpers or switches for VME interrupts, Ethernet address, or memory parameters.

5. Can it be used in a non-VME D20 chassis? No. The EME board requires a VME-compatible D20 or D200 chassis.

6. What software is used to configure it? Global memory parameters are configured through Config Pro. Ethernet communication is managed through the D20/D200 application configuration.

7. What warranty do you offer on surplus stock? Terms vary by condition and availability. For surplus industrial modules, we typically provide a short functional guarantee. Confirm details at time of order.