GE DS3800DERB

Technical Specifications

• Board Type: Digital Encoder and Resolver PCB with conformal coating.

• Encoder Inputs: 2 channels for incremental encoders (RS-422 differential or TTL single-ended) up to 500 kHz.

• Resolver Inputs: 1 channel for resolver signals with onboard RDC (Resolver-to-Digital Converter).

• Resolver Accuracy: Up to 12-bit resolution.

• Position Processing: 32-bit position tracking.

• Speed Processing: Real-time velocity calculation.

• Encoder Outputs: Buffered encoder signal distribution for external devices.

• 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.

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

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

• Status Indicators: 12 LEDs for power, encoder/resolver status, position tracking, communication activity, and fault conditions.

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

• Temperature Range: -10°C to +65°C operational.

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

• Power: 5 VDC from backplane.

• MTBF: 190,000 hours.

Advantages & Key Features

• Dual Feedback Support: The GE Fanuc DS3800DERB supports both encoder and resolver feedback, providing flexibility for various applications.

• Resolver-to-Digital Conversion: Onboard RDC on the GE Fanuc DS3800DERB enables direct resolver input for precision applications.

• 32-bit Position Tracking: High-resolution position tracking for precise positioning.

• Real-time Velocity Calculation: Onboard speed processing provides accurate speed feedback.

• Integrated Digital I/O: Control and status signals for comprehensive system integration.

• Extended Temperature Range: -10°C to +65°C for demanding environments.

• Diagnostic LEDs: 12-LED indicator matrix provides comprehensive real-time status.

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

Application Fields

• Steel & Metal Processing: Versatile feedback for rolling mill drives.

• Paper & Pulp: Speed and position feedback for paper machine sections.

• Material Handling: Position feedback for crane and conveyor systems.

• General Industrial: Any GE DC300/DC200 drive requiring encoder or resolver feedback.

Comparison with Alternatives

Key Differentiator: The GE Fanuc DS3800DERB offers dual feedback support for both encoder and resolver applications.

Selection Suggestions & Precautions

1. Feedback Type: Confirm your feedback device type (encoder or resolver) matches the board’s specifications.

2. Resolver Wiring: Use shielded cables for resolver connections.

3. Encoder Type: Confirm encoder is RS-422 differential or TTL single-ended.

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

5. Test Report Required: Request verification of encoder and resolver input functionality.

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

Final Recommendation

The GE Fanuc DS3800DERB is a versatile digital encoder and resolver board for GE DC300/DC200 drive systems, offering dual feedback support for both sensor types. It is ideal for applications requiring flexibility in feedback device selection. 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.