Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Model | D20-EME (Ethernet/Memory Expansion) |
| Product Type | Expansion Module / Kit |
| Compatible Platforms | GE D20 and D200 Substation Controllers |
| Function | Adds Ethernet connectivity and/or expanded global memory |
| Ethernet Media Options | 10Base-T, 10Base2, 10Base-FL |
| Memory Options | 0 MB, 8 MB, or 16 MB battery-backed SRAM |
| Configurations | Ethernet only / Memory only / Combined |
| Form Factor | VME-based module |
| Typical Use | New installations or upgrades of D20/D200 systems |
4. Product Introduction (Anti-Template)
The GE D20-EME is the Ethernet/Memory Expansion module (or kit) for the D20 and D200 Substation Controller platforms. It provides a practical way to add Ethernet network connectivity and/or additional battery-backed global memory to existing or new D20/D200 systems.
Available configurations include Ethernet-only, memory-only, or combined Ethernet-plus-memory versions. Ethernet media interface cards support 10Base-T, 10Base2, or 10Base-FL, while memory options typically offer 0 MB, 8 MB, or 16 MB of battery-backed SRAM. The module is VME-based and installs in compatible D20 or D200 chassis. It was commonly used both for new substation automation projects and as an upgrade path for earlier systems that lacked native Ethernet or required more memory. Note that the broader D20/D200ME portfolio has reached end-of-manufacturing status, so units are primarily sourced as spares or for legacy system maintenance.
D20-EME
D20-EME
D20-EME
D20-EME
D20-EME
5. QC, Procurement & Logistics SOP
- Inbound Verification – Confirm full model/configuration (D20-EME and any specific media or memory options), part numbers on the main board and media interface card, and connector condition. Photograph all labels.
- Functional Testing – Install in a compatible D20 or D200 chassis where possible, verify power-up LEDs, and check basic Ethernet or memory recognition.
- QA & Packaging – Protect the VME connector, media interface ports, and any battery, clean the module, and pack in anti-static protective packaging.
- Global Logistics & Export Compliance – Classify under the correct HS code for industrial communication/expansion modules. Packaging must protect against electrostatic discharge; export documentation is prepared to minimize customs delays.
6. Technical Pitfalls & Integration Warnings
Chassis Compatibility – Not all older D20 chassis support the EME. Verify the specific chassis part number before installation.
Firmware Impact – Adding or changing an Ethernet EME card may require reloading or updating software on the D20ME / D20ME II processor.
Media Interface Matching – Ensure the correct media interface card (10Base-T, 10Base2, or fiber) is installed for the intended network.
Battery Handling – Memory versions contain a backup battery. Disconnect the battery for long-term storage to prevent leakage or depletion.
7. Frequently Asked Questions (FAQ)
What is the realistic global lead time for a verified D20-EME?
As a legacy D20/ expansion module, availability depends on surplus stock. Typical lead time after verification is 5–20 business days plus standard shipping.
What is the function of the D20-EME?
It adds Ethernet connectivity and/or expanded battery-backed memory to GE D20 or Substation Controllers.
What Ethernet media options are available?
10Base-T, 10Base2, and 10Base-FL (fiber).
What memory sizes are offered?
Typically 0 MB, 8 MB, or 16 MB of battery-backed SRAM.
Is the D20-EME still in production?
No. The D20/D200ME portfolio has reached end-of-manufacturing. Units are available only through surplus and specialist channels for existing installations.
What should be confirmed before ordering a replacement?
Exact configuration (Ethernet only, memory only, or combined), required media type, memory size, and compatibility with the specific D20 or chassis and processor.
