Description
The GE (General Electric / Harris) D20 EME 10BASE-T is an Ethernet and Memory Expansion (EME) module engineered specifically for the GE D20 and D200 substation automation controller architecture. This specialized module serves a dual purpose by significantly upgrading internal system memory while adding a 10BASE-T Ethernet networking interface, enabling robust remote terminal unit (RTU) communication and supervisory control across electrical power utility networks.
📊 Technical Specifications
- Brand: General Electric (GE / Harris / Energy)
- Model / MPN: D20 EME 10BASE-T (Ethernet & Memory Expansion Module)
- Series: D20 / D200 Substation Automation Series
- Product Name: Ethernet and Memory Expansion Board with 10BASE-T Media Interface
- Manufacturing Status: Mature / Legacy Industrial Utility Spare Part
- Network Standard: IEEE 802.3 10BASE-T (10 Mbps transmission over twisted-pair copper cabling via an RJ-45 interface)
- Memory Upgrade: Expands base D20 processor memory capacity to support advanced firmware and larger control logic databases
- Mounting / Chassis: Modular plug-in board designed for the standard GE D20 backplane chassis
🛠️ Operation Guidelines & Installation
Installation and replacement must be performed strictly by qualified substation technicians or certified utility automation engineers. Always ensure that control power to the D20/D200 RTU rack is fully isolated, locked out, and de-energized before inserting or removing internal modules to prevent electrostatic discharge (ESD) or electrical damage. Wear an anti-static grounding wrist strap while sliding the module into its designated rack slot, ensuring proper pin alignment with backplane connectors.
🔌 Power-Up and Power-Down Sequence
Verify that all internal ribbon cables, daughterboards, and network cabling (such as twisted-pair Ethernet connections routed through the 10BASE-T Media Interface Card) are correctly seated and secured before applying power. Energize the RTU rack power supply to initialize the processor and load operating firmware. Observe the front-panel diagnostic indicators to confirm a successful boot sequence and active network link status. For maintenance or shutdown, isolate power feeds safely beforehand.
📝 Product Usage Instructions
The D20 EME module allows legacy D20 substation controllers to seamlessly interface with modern Ethernet-based local area networks (LANs) and SCADA systems. Configuration parameters, IP addressing, and protocol routing are managed through GE’s dedicated utility configuration software suites. Keep the substation control cabinet environment clean, dry, and properly temperature-regulated to ensure long-term hardware reliability.
❓ Common Questions (Q&A)
Q: What is the primary function of the D20 EME module?
A: It provides a dual upgrade by expanding the system’s internal memory capacity and adding 10BASE-T Ethernet networking capabilities to GE D20/D200 RTU controllers.
Q: Does the module require a separate Media Interface Card (MIC)?
A: Yes, the D20 EME architecture works in conjunction with a matching Media Interface Card (such as the 10BASE-T variant) to physically terminate the network connection.
Q: Is this module compatible with older serial-only D20 setups?
A: Yes, it is designed to upgrade existing D20 controllers, allowing legacy hardware to transition into networked TCP/IP substation environments.
🚀 Recommended Related Models
- GE D20ME Controller Module (Main Processing Unit)
- GE D20 RTU Main Chassis Backplane
- GE D20 COM Communications Module
- GE D20 I/O Submodules (Digital and Analog Input/Output)
- GE D400 Substation Gateway Controller
- GE Multilin D60 Line Distance Protection System
- GE EnerVista Communication Hub Gateway
- GE Harris Wesdac Power Supply Unit
- GE Substation Communication Interface Card
- GE D20 Power Supply Module
