Description
Technical Parameters
| Parameter | Specification |
|---|---|
| Input Voltage | Wide range: 24–250 VDC (auto‑sensing); 24–240 VAC compatible with external adapter |
| Output Rails | +5 VDC / 10A (logic), ±15 VDC / 2.5A (each rail, analog), +24 VDC / 3A (auxiliary) |
| Isolation | Full isolation (1.5kV input‑to‑output, 2.0kV output‑to‑ground) |
| Protection | Overcurrent protection (adjustable per output via jumpers), short‑circuit protection, transient suppression (6kV surge), reverse polarity protection, input undervoltage lockout |
| Regulation | Load regulation: ±0.25%; Line regulation: ±0.12%; Ripple: < 15mVpp (+5V), < 10mVpp (±15V) |
| Monitoring | 6 analog feedback channels (voltage and current monitoring for each output); 6 digital fault outputs (relay, 24V/1.5A) for system faults and diagnostic alerts |
| Communication Interface | RS‑485/Modbus for external device communication; communicates with main CPU via backplane |
| Digital Interface | 6 digital inputs for external control; 8 digital outputs for status indication |
| Diagnostic Features | Onboard diagnostic engine for power supply health monitoring; predictive failure indicators (capacitor ESR, MOSFET health); event logging (5,000‑event buffer) |
| Operating Temperature | –40°C to +70°C |
| Form Factor | 6U × 6HP (30mm) – requires 1.5 slots |
| Backplane Connector | Standard VME 96‑pin P1 + reinforced 60‑pin P2 |
| Status LEDs | 10 indicators: INPUT OK (green), OUTPUT OK (green), SYSTEM OK (green), FAULT (red), WIDE INPUT ACTIVE (blue), AUX OK (green), OVERTEMP (yellow), DIAGNOSTIC ALERT (orange), PREDICTIVE ALERT (purple), COMM ACTIVE (white) |
| Certifications | CE, UL 508, CSA Class I Div 2, IEC 61508 SIL 2 (TÜV‑certified) |
| Efficiency | ~85% at full load |
Critical note: The DS3800NUVA1C1B is a universal voltage power board with wide input voltage range (24–250 VDC), highest capacity, enhanced diagnostics, communication, and SIL 2 certification. It is physically wider (6HP) than standard 4HP boards and requires 1.5 adjacent slots. Hot‑swapping is not supported.
Key Features & Advantages
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Wide Input Voltage Range – Accepts 24–250 VDC input, suitable for various power sources.
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Highest Capacity – +5V at 10A, ±15V at 2.5A, and +24V at 3A—highest in the NUVA family.
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Auto‑Sensing Input – Automatically detects input voltage range.
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Communication Interface – RS‑485/Modbus for external device communication.
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Predictive Analytics – Monitors capacitor ESR and MOSFET health; purple LED warns before failure.
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Event Logging – 5,000‑event buffer for failure analysis.
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Comprehensive Monitoring – Six analog channels for voltage and current monitoring of all outputs.
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Six Fault Relays – Separate fault indication for system faults and diagnostic alerts.
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SIL 2 Certification – TÜV‑certified for functional safety.
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Wide Temperature Range – –40°C to +70°C.
Typical Application Cases
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Auxiliary Control Cabinets – Powers logic and analog circuits with variable input sources.
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Test Equipment – Provides flexible power for laboratory and test applications.
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Field Device Power Distribution – Powers field devices with varying input voltage.
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Safety‑Related Systems – SIL 2 certification makes it suitable for safety‑critical applications.
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System Integration Projects – Used when wide input range, communication, and diagnostics are required.
Competitive Comparison
| Aspect | DS3800NUVA1C1B (GE) | DS3800NUVA1B1B (GE) | Generic Wide‑Range Supply |
|---|---|---|---|
| Input Voltage | 24–250 VDC | 24–250 VDC | Varies |
| +5V Output | 10A | 8A | Varies |
| ±15V Output | 2.5A each | 2A each | Varies |
| Communication | Yes (RS‑485) | No | Varies |
| Predictive Analytics | Yes | No | No |
| SIL 2 | Yes | No | Varies |
| Price (refurb) | ~$5,800–$8,500 | ~$4,800–$7,000 | ~$200–$800 |
Selection Guidelines & Precautions
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Application Verification – Designed for flexible power distribution with wide input voltage, communication, diagnostics, and SIL 2.
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Physical Compatibility – 6HP wide, requires 1.5 adjacent slots.
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Backplane Compatibility – Uses P1 and P2. If backplane lacks P2, communication and auxiliary features unavailable.
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Input Voltage Range – Ensure input voltage is within 24–250 VDC range.
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Communication Configuration – Configure RS‑485/Modbus parameters via backplane communication using GE Service Tool Software.
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Thermal Derating – Full output to 60°C; derate to 90% at 60–65°C, 80% at 65–70°C. Do not operate above 70°C.
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SIL 2 Compliance – Follow GE safety manual GEI‑101125 for installation and proof‑test intervals.
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Spare Sourcing – Production ended in 2021. Request test report verifying outputs, wide input functionality, communication functions, predictive analytics, and event logging. Inspect for capacitor bulging or discoloration. Prioritize this for applications requiring maximum capacity, wide input range, communication, and SIL 2 certification.
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