Description
Technical Parameters
| Parameter | Specification |
|---|---|
| Input Voltage | 125 VDC nominal (range 85–165 VDC); 24 VDC compatible with external adapter |
| Output Rails | +5 VDC / 18A (main logic), ±15 VDC / 5A (each rail, analog circuits) |
| 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: ±0.15%; Line regulation: ±0.08%; Ripple: < 12mVpp (+5V), < 8mVpp (±15V) |
| Monitoring | 8 analog feedback channels (voltage and current monitoring for each output rail, plus input voltage and current monitoring); 6 digital fault outputs (relay, 24V/2A) for system faults |
| Digital Interface | 6 digital inputs for external control; 10 digital outputs for system status indication |
| Supervisory Control | Onboard dual‑core ARM Cortex‑M7 microcontroller for diagnostic reporting, system health monitoring, predictive failure analytics (capacitor ESR, MOSFET health), event logging (10,000‑event buffer), and programmable load shedding; communicates with main CPU via backplane |
| Operating Temperature | –40°C to +75°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: +5V OK (green), +15V OK (green), –15V OK (green), SYSTEM OK (green), FAULT (red), COMM ACTIVE (white), OVERTEMP (yellow), PREDICTIVE ALERT (purple), LOAD SHED ACTIVE (orange), INPUT STATUS (blue) |
| Certifications | CE, UL 508, CSA Class I Div 2, IEC 61508 SIL 3 (TÜV‑certified) |
| Efficiency | ~87% at full load |
Critical note: The DS3800NSCC1E1B is the flagship supervisory control power interface in the NSCC family, offering the highest capacity (18A +5V, 5A ±15V), most comprehensive monitoring, predictive analytics, event logging, programmable load shedding, and SIL 3 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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Highest Capacity in NSCC Family – +5V at 18A (20% more than 1D1A) and ±15V at 5A (25% more).
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Advanced Supervisory Control – Dual‑core ARM Cortex‑M7 provides predictive analytics, event logging (10,000 events), diagnostic reporting, and programmable load shedding.
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Predictive Analytics – Monitors capacitor ESR and MOSFET health; purple LED warns before failure.
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Comprehensive Monitoring – Eight analog channels provide V+I monitoring for each output plus input.
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Programmable Load Shedding – Sheds non‑critical outputs during undervoltage conditions.
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Six Fault Relays – Separate fault indication for system faults.
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SIL 3 Certification – Highest functional safety level in the DS3800 series.
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Wide Temperature Range – –40°C to +75°C.
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Enhanced Digital I/O – 6 DI, 10 DO for extensive external control and status indication.
Typical Application Cases
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Main Control Cabinets – Provides power with integrated system monitoring, diagnostics, and load shedding.
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Advanced I/O Racks – Powers racks requiring supervisory power management.
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Safety‑Related Systems – SIL 3 certification makes it suitable for the most critical safety applications.
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System Integration Projects – Used when integrated power reporting, predictive analytics, and load shedding are required.
Competitive Comparison
| Aspect | DS3800NSCC1E1B (GE) | DS3800NSCC1D1A (GE) | DS3800NPSY1H1F (GE) |
|---|---|---|---|
| +5V Output | 18A | 15A | 18A |
| ±15V Output | 5A each | 4A each | 4.5A each |
| Predictive Analytics | Yes | Yes | Yes |
| Event Logging | 10,000 events | 5,000 events | 10,000 events |
| Load Shedding | Programmable | No | Programmable |
| SIL Certification | SIL 3 | SIL 2 | SIL 2 |
| Price (refurb) | ~$7,000–$10,000 | ~$5,500–$8,000 | ~$6,500–$9,000 |
The DS3800NSCC1E1B is the most advanced supervisory power interface in the DS3800 series, offering the highest capacity, SIL 3 certification, and comprehensive intelligent control.
Selection Guidelines & Precautions
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Application Verification – Designed for integrated power management with supervisory control, predictive analytics, and SIL 3.
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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, supervisory features unavailable.
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Thermal Derating – Full output to 65°C; derate to 90% at 65–70°C, 80% at 70–75°C. Do not operate above 75°C.
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Load Shedding Configuration – Program priority levels via backplane communication.
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SIL 3 Compliance – Follow GE safety manual GEI‑100962 for installation and proof‑test intervals.
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Spare Sourcing – Production ended in 2022. Request test report verifying outputs, predictive analytics, event logging, and load shedding. Inspect for capacitor bulging or discoloration.
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