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GE D20 EME2 10BASE-T Ethernet / Memory Expansion Module

The GE D20 EME2 10BASE-T is a ruggedized, utility-hardened network processing circuit board manufactured for deployment in high-voltage electrical environments, transmission stations, and distributed industrial control cabinets. Acting as an essential system pipeline, this module transforms baseline RTU units into high-throughput SCADA data concentrators.

This second-generation (EME2) architecture features a heavily shielded multi-layer PCB design built to damp severe electromagnetic induction (EMI). The surface incorporates an integrated 10BASE-T physical layer transceiver network alongside an expanded memory matrix. Unlike basic expansion footprints, the EME2 series isolates communication channels through precise transformer coupling to shield downstream microprocessors from ground loops and external field surges. The module interfaces natively with Eurocard-style 3U horizontal rack rails, connecting directly into the central parallel bus to establish reliable data pathways between peripheral I/O modules and the master processing unit. 

Parameter Technical Values & Specifications

Manufacturer General Electric (GE Grid Solutions / Digital Energy)

Model CodeD20 EME2 10BASE-T

Global Part Number D20ME-E-N-U-U

PCB Base Number 820-0756 (Typically Revision 01 or higher)

Network Interface 10BASE-T Ethernet (IEEE 802.3 Compliant)

Transmission Rate 10 Mbps Line Speed

Physical Medium Unshielded/Shielded Twisted Pair (UTP/STP Category Copper)

Memory Configuration High-Density 8MB or 16MB Storage Kit Capacity

Chassis Interface 3U Horizontal Backplane Insertion

Surge Protection Onboard Isolation Transformers and Safe Ground Traces

Environmental Range -40°C to +85°C Operational Substation Grade

Logic Platform Support LogicLinx IEC61131-3 Automation Environments

• Optimized Dual Architecture: Resolves physical communication routing bottlenecks and runtime register limitations within a single physical slots footprint.

• Dedicated 10BASE-T Copper Pipeline: Provides direct network connectivity via low-latency twisted-pair lines, allowing instant integration into modern industrial LAN structures.

• Robust Wave Isolation: Onboard physical isolation arrays block destructive transient signals from propagating past the network terminal and hitting adjacent processor cards.

• Expanded SOE Capacities: High-density RAM configurations allow the host D20 controller to log vast Sequence-of-Events (SOE) lists and historical data pools locally.

• Backward Integration Capability: Designed to install directly alongside existing D20ME and D20ME II controller blocks without requiring complete backplane rewiring or frame changes.

• Substation SCADA Gateways: Serves as the primary physical network channel translating DNP3, Modbus, or IEC 60870-5-104 protocol frames back to main dispatch centers.

• Intelligent Data Concentration: Connects local downstream protection relays, tap changers, and electronic meters over an integrated Ethernet LAN hub.

• Automated Smart Grid Management: Provides the structural processing speed and memory buffers needed for active volt-VAR control, automated line reclosing routines, and section isolation.

Q: What is the main difference between the original D20 EME and the D20 EME2 modules?

A: The D20 EME2 features an optimized, high-density component layout on the 820-0756 circuit footprint, offering enhanced thermal properties, cleaner signal routing, and pre-configured 10BASE-T network pairing options over earlier revision variants.

Q: Does the D20 EME2 10BASE-T require an external Media Interface Card (MIC)?

A: While classic EME kits frequently relied on separate, modular MIC expansion blocks to break out different connection configurations (like 10BASE2 or 10BASE-FL), this 10BASE-T version comes equipped to directly drive standard copper twisted-pair industrial lines via its backplane routing hooks.

Q: Can this unit handle redundant network configurations inside a D200 chassis?

A: Yes. When dual D20 EME2 cards are deployed in a paired D20/D200 structural environment, the system configuration software handles seamless link failure validation, rerouting communications dynamically if one channel experiences a drop.

Q: What terminal interface parameters are required to configure the network settings?

A: Network addresses, subnet masking, and polling properties are loaded directly via GE’s proprietary platform utility packages (such as ConfigPro) over a secure system link.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

2. What payment methods and currencies do you accept?

To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.

How many parts do you currently have in stock?

We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.