DS3800HDDD1A1A GE

Technical Specifications

• Product Type: High-Density Digital Driver Board (Revision 1A1A)

• Part Number: DS3800HDDD1A1A

• Manufacturer: General Electric (GE)

• System Compatibility: GE Speedtronic Mark IV Turbine Control Systems

• Output Channels: 32 digital outputs – highest density in Mark IV

• Output Type: Sourcing or sinking (jumper-selectable per channel)

• Output Voltage: 24Vdc, 48Vdc, or 125Vdc (jumper-selectable)

• Output Current: Up to 500mA per channel (continuous); 1A peak (short duration)

• Protection: Over-current, short-circuit, and over-temperature protection per channel

• Diagnostics: Individual channel fault detection with LED indication

• Isolation: 1500Vrms opto-isolation (logic-to-field)

• Temperature Range: 0°C to +60°C

• MTBF: > 150,000 hours (MIL-HDBK-217F)

Key Features & Advantages

• High Channel Density: The GE DS3800HDDD1A1A provides 32 digital outputs on a single 6U board, maximizing rack space efficiency.

• Flexible Output Configuration: Jumper-selectable sourcing or sinking per channel.

• Wide Voltage Range: Supports 24Vdc, 48Vdc, or 125Vdc field devices.

• Comprehensive Protection: Over-current, short-circuit, and over-temperature protection.

• Proven Reliability: Initial revision with long field track record.

• Diagnostic LEDs: Front-panel LEDs indicate output status and fault conditions.

Typical Application Cases

• Solenoid Control: Drives multiple solenoids in turbine control systems.

• Contactor Control: Controls contactors for motor starters and auxiliary equipment.

• Indicator Lamp Driving: Drives indicator lamps and annunciator panels.

• Space-Constrained Installations: Maximizes I/O density where rack space is limited.

Competitive Comparison

The GE DS3800HDDD1A1A is functionally identical to the base DS3800HDDD and offers the highest digital output density in the Mark IV family with solid-state reliability.

Selection Guidelines & Precautions

1. Output Configuration: Configure sourcing or sinking per channel to match your field device wiring.

2. Voltage Selection: Set output voltage (24V, 48V, or 125V) to match your field devices.

3. Current Verification: Ensure each channel’s load does not exceed 500mA continuous (1A peak).

4. Wiring: Use appropriate gauge wiring for current loads.

5. ESD Handling: Use ESD-safe practices.

6. Sourcing: Obsolete. Request functional test report including all 32 channels tested for output voltage, current, and protection.

7. Spare Strategy: Keep one spare GE DS3800HDDD1A1A on-site for critical high-density output applications. If higher isolation or extended temperature range is required, consider later revisions