GE DS3800DFCD

Technical Specifications

• Board Type: Digital Field Control and Drive PCB with conformal coating.

• Field Control: Field current regulation and field weakening control.

• Field Output: 1 analog output for field current reference (0-10V or 4-20mA).

• Field Feedback: 1 analog input for field current feedback.

• Digital Inputs: 8 optically isolated inputs (24 VDC) for control and status signals.

• Digital Outputs: 8 relay or solid-state outputs for status and alarm indication.

• Control Functions: Field weakening, field current limit, and field loss detection.

• Protection: Field overcurrent and field loss detection.

• Communication: RS-232/RS-485 serial interface for external integration.

• Communication: Backplane interface to regulator board via 96-pin DIN connector.

• Status Indicators: 10 LEDs for power, field status, communication activity, and fault conditions.

• Form Factor: Standard 6U height, 160mm depth, GE 19″ rack compatible.

• Temperature Range: 0°C to +60°C operational.

• Isolation: 1500V RMS between field and logic circuits.

• Power: 5 VDC and ±15 VDC from backplane.

• MTBF: 185,000 hours.

Advantages & Key Features

• Precise Field Control: The GE Fanuc DS3800DFCD provides accurate field current regulation for optimal motor performance.

• Field Weakening Control: Enables extended speed range operation.

• Field Loss Protection: Detects field loss conditions for safe operation.

• Integrated Protection: Field overcurrent and field loss detection ensure safe operation.

• Serial Communication: RS-232/RS-485 interface for external integration.

• Diagnostic LEDs: 10-LED indicator matrix provides comprehensive real-time status.

• Conformal Coating: Protects against dust, moisture, and chemicals.

Application Fields

• Steel & Metal Processing: Field control for rolling mill DC motors.

• Paper & Pulp: Field control for paper machine DC drives.

• Material Handling: Field control for crane and conveyor DC motors.

• General Industrial: Any GE DC300/DC200 drive requiring field control.

Comparison with Alternatives

Key Differentiator: The GE Fanuc DS3800DFCD integrates field control functions specifically for GE DC300/DC200 drives.

Selection Suggestions & Precautions

1. Field Requirements: Verify your field control requirements match the board’s specifications.

2. Field Wiring: Use appropriate wiring for field connections.

3. Calibration: Verify scaling and calibration for accurate field control.

4. Capacitor Aging: NOS boards stored >5 years may require capacitor inspection.

5. Test Report Required: Request verification of field control functionality.

6. Spare Strategy: For critical applications, maintain a tested spare.

Final Recommendation

The GE Fanuc DS3800DFCD is a reliable digital field control board for GE DC300/DC200 drive systems, providing precise field regulation and protection. Prioritize suppliers with comprehensive testing capabilities. For critical applications, maintain a tested spare to minimize downtime. As GE has discontinued this series, sourcing through reputable aftermarket suppliers with refurbishment and testing capabilities is recommended.