GE D20MXACUUUAFUUUU
- Product Name: D20MX Substation Controller / Processor (Order Code D20MX‑ACUUUAFUUUU)
- Product Description: A high‑performance, non‑VME substation controller designed for remote terminal unit (RTU), gateway, and automation functions in electrical substations and industrial power systems. It performs data acquisition, protocol conversion, and control logic execution.
Detailed content
- Technical Specifications:
- Processor: 667 MHz embedded PowerQUICC II Pro
- Memory: 1024 MB 266 MHz DDR2 RAM with ECC; 16 MB NVRAM for persistent event storage
- Storage: 8 MB boot flash; 256 MB firmware flash
- Operating System: VxWorks
- Network: Dual redundant 10/100/1000BaseT Ethernet (isolated RJ‑45); optional 100BaseFX fiber optic (1300 nm, multimode, ST/LC connectors)
- Serial: D.20 Link, 2 channels at 250 kbps (surge protected to ±2000 V peak); RS‑232, 7 channels (TXD, RXD, RTS#, CTS#, DCD#), data rate independently selectable
- Maintenance Port: RS‑232, 1 channel / 2 ports (TXD, RXD), 19200 bps default
- Electrical:
- Power supply: 20‑60 VDC input, 24 V isolated output
- Rated frequency: 50/60 Hz nominal (47‑63 Hz)
- Peak inrush current at 25°C cold start: 50 A max at 230 VAC
- Physical:
- Dimensions: 40.34 mm (H) × 261.87 mm (W) × 160 mm (D)
- Weight: 0.7 kg (D20MX); 0.2 kg (fiber card)
- Material/Finish: Galvannealed steel with black powder coat
- Battery: None (no DOT/ICAO shipping restriction)
- Environmental:
- Operating temperature: 0°C to +60°C (typical industrial grade)
- Storage and humidity parameters per GE Grid Solutions environmental specifications; conforms to relevant Standards & Protection listed in Appendix A of the manual.
- Functional Features:
- Dual redundant Ethernet for high availability
- Support for D20 classic and advanced automation application licenses
- Front‑access port configuration (ACUUU portion) for easy cabling
- Modular modem slots for future expansion
- Application Scenarios: Substation automation, SCADA remote terminal unit, protocol gateway, distribution automation, industrial power system monitoring and control.
- Installation Requirements:
- Install in a D20 chassis or 19‑inch rack per D20MX layout guidelines
- Properly ground the D20MX chassis before powering up
- Use shielded, surge‑protected cabling for serial and Ethernet connections
- Ensure DC input voltage is within 20‑60 V range; observe polarity
- Usage Notes:
- Do not energize before grounding and cabling are verified
- Firmware download and configuration must follow GE SGConfig procedures
- For redundancy, configure failover per GE application guidelines
- No internal battery; safe for air shipment












