Description
GE ETHERNET WESDAC D20 EME Memory Card Module (P/N: 526-2100)
The GE 526-2100 (WESDAC D20 EME) is a high-reliability Ethernet and Memory Expansion module designed for the GE Multilin D20 and D200 substation controllers. It acts as a bridge to enhance the communication bandwidth and processing memory of legacy and modern Remote Terminal Units (RTUs).
Product Introduction
The GE WESDAC D20 EME (Ethernet/Memory Expansion) module is a vital upgrade for substation automation. It enables D20/D200 systems to communicate over modern Ethernet networks while providing additional high-speed SRAM for data concentration and local automation algorithms. By installing the 526-2100 Memory Module, operators can support more complex protocols like IEC 61850 and DNP3 over IP without replacing the entire chassis.
GE D20 Technical overview
https://manualslib.de/manual/1350154/Ge-D20.html
Technical Specifications (Datasheet)
The following parameters detail the hardware capabilities of the 526-2100 module:
| Parameter | Specification |
| Part Number | 526-2100 (also referenced as 526-2100-ML) |
| Model | WESDAC D20 EME |
| Memory Capacity | 8 MB Standard (Expandable to 16 MB) |
| Memory Type | Battery-backed SRAM & NVRAM |
| Ethernet Interfaces | 10Base-T, 10Base-2, or 10Base-FL (via Media Interface Card) |
| Compatibility | GE D20 and D200 Chassis |
| Hardware Link | Connects to D20M++ VME module via P1/P2 connectors |
| Protection Level | IP66 (When housed in compliant enclosures) |
| Operating Temp | -20°C to +60°C |
| Country of Origin | USA / Canada |
Product Usage & Installation
The 526-2100 EME module is designed for easy integration into existing D20 series racks.
- Hardware Connection: The card is mounted onto the main D20M processor board using P1 and P2 connectors. It typically requires an interface cable (P/N 977-0298) when a Media Interface Card (MIC) is used.
- Network Configuration: Once installed, the Ethernet port is configured through the WESMAINT™ maintenance port to set IP addresses and subnet masks.
- Memory Management: The additional 8MB/16MB space allows the D20 to handle larger system databases and log more Sequence of Events (SOE) data.
- Redundancy: In dual-chassis configurations, the EME card supports high-speed synchronization between primary and standby controllers.
Application Fields
- Substation Automation: Providing Ethernet connectivity for SCADA and EMS systems.
- Data Concentration: Aggregating data from multiple IEDs (Intelligent Electronic Devices).
- Protocol Conversion: Mapping legacy serial protocols to modern Ethernet-based protocols.
- Smart Grid Support: Enabling remote diagnostics and high-speed automated control logic.
Recommended Similar Models
For expansion or maintenance of your GE D20/D200 system, the following modules are frequently used alongside the 526-2100:
- D20ME II: The primary 32-bit CPU board for the D20 platform.
- D20S: A digital status input module providing 64 channels for monitoring.
- D20K: A control output module used for trip/close commands and interposing relays.
- D20A: An analog input module for measuring current, voltage, and frequency.
- D20C: A combination module providing both status inputs and control outputs.
Would you like me to check the specific jumper settings required to enable 16MB expansion on this memory card?
