Description
The GE Wescom D200 is a high-performance substation controller and data concentrator designed for the utility and industrial power sectors. This D20 M Rack system utilizes a VME-bus architecture to provide a scalable, modular platform for Supervisory Control and Data Acquisition (SCADA) applications, protocol conversion, and automated substation management.
Product Introduction
The GE Wescom D200 VME (often integrated within the D20 M Rack) is a versatile Remote Terminal Unit (RTU) and communications gateway. It is engineered to bridge the gap between legacy field devices and modern control centers. By housing multiple VME-based processor and I/O cards, the D20 M Rack can simultaneously manage thousands of data points and translate complex protocols like DNP3, IEC 60870-5-101/104, and Modbus into a unified data stream.
WESCOM D200 VME WESCOM D200 VME D20 M++
Product Parameters (Datasheet)
| Parameter | Specification |
| Model Type | D200 VME / D20 M Rack |
| Architecture | VMEbus (Versa Module Eurocard) Standard |
| Processor Options | 68K series or PowerPC based VME modules |
| I/O Capacity | Up to 32,000 points per system |
| Power Supply | 24V DC, 48V DC, or 125V DC (Modular PDM) |
| Communication | Serial (RS-232/485), Ethernet (10/100 Mbps) |
| Protocols | 70+ supported (DNP3, Modbus, IEC 870, etc.) |
| Mounting | 19-inch Standard Rack Mount (3U or 6U height) |
| Operating Temp | -40°C to +70°C (Extended range available) |
Country of Origin
- Origin: Canada (GE Grid Solutions / Wescom)
Product Technical Description
The D20 M Rack functions as the physical housing and electrical backbone for the D200 system. The VME backplane allows for high-speed data transfer between the D20ME (Main Processor) and various peripheral modules. It features advanced electromagnetic compatibility (EMC) shielding to ensure reliable operation near high-voltage transformers and switchgear.
Usage Instructions
- Rack Installation: Mount the D20 M Rack in a standard 19-inch equipment cabinet. Ensure adequate airflow for cooling the VME modules.
- Module Insertion: Carefully slide the VME processor cards and I/O modules into the designated slots. Ensure the ejector handles are locked to maintain a solid backplane connection.
- Powering: Connect the Power Distribution Module (PDM) to the substation battery bank. Verify that the voltage matches the PDM rating (e.g., 125V DC).
- Configuration: Use the ConfigPro software suite to define the database, communication ports, and logic equations. Configuration is typically uploaded via the maintenance serial port or Ethernet.
- Wiring: Connect field signals (Digital Inputs, Control Outputs) to the D20 peripheral I/O modules via DB25 or screw-terminal termination blocks.
Product Q&A
- Q: Can the D200 VME system support redundancy?
- A: Yes, the system can be configured in a “Redundant D200” setup using two racks and a failover switch to ensure 99.99% uptime for critical SCADA links.
- Q: Is the D200 VME still supported for legacy upgrades?
- A: While newer platforms like the D400 exist, the D200 VME is widely supported with “D20ME II” processor upgrades to extend the life of existing D20 M Racks.
- Q: What is the purpose of the VME backplane?
- A: The VME backplane provides a standard high-speed bus that allows the main CPU to communicate with specialized I/O and communication cards with extremely low latency.
Recommended Similar Models
- GE D20ME II: The modern high-speed processor upgrade for D200 VME racks.
- GE D20 S Rack: A smaller, compact version of the D20 M Rack for localized control.
- GE D20K: Peripheral I/O module for digital inputs and status monitoring.
- GE D20C: Combination I/O module for analog and digital signals.
- GE D400: The next-generation substation gateway designed to replace the D200 series.
Documentation & Manuals
For detailed slot assignments, power consumption calculations, and ConfigPro setup guides:
Download GE WESCOM D200 MANUAL datasheet
