Description
Technical Parameters
| Parameter | Specification |
|---|---|
| Input Voltage | 125 VDC nominal (range 90–160 VDC); 24 VDC compatible with external adapter |
| Output Rails | +5 VDC / 15A (main logic), ±15 VDC / 3.5A (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: ±0.2%; Line regulation: ±0.1%; Ripple: < 15mVpp (+5V), < 10mVpp (±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/1.5A) for system faults |
| Data Acquisition | Onboard dual‑channel ADC for system performance data acquisition; event logging (5,000‑event buffer); communicates with main CPU via backplane |
| Digital Interface | 6 digital inputs for external control; 8 digital outputs for system status indication |
| Supervisory Control | Onboard ARM Cortex‑M7 microcontroller for diagnostic reporting, system health monitoring, data acquisition, predictive failure analytics (capacitor ESR, MOSFET health), and event logging |
| 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: +5V OK (green), +15V OK (green), –15V OK (green), SYSTEM OK (green), FAULT (red), COMM ACTIVE (white), OVERTEMP (yellow), PREDICTIVE ALERT (purple), DATA ACQUISITION ACTIVE (blue), INPUT STATUS (orange) |
| Certifications | CE, UL 508, CSA Class I Div 2, IEC 61508 SIL 2 (TÜV‑certified) |
| Efficiency | ~86% at full load |
Critical note: The DS3800NSCD1B1C is a supervisory control and data acquisition power interface with advanced diagnostics, predictive analytics, 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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Higher Capacity – +5V at 15A and ±15V at 3.5A—significantly higher than baseline NSCD (12A, 2.5A).
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Advanced Data Acquisition – Dual‑channel ADC for system performance data acquisition.
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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 – Eight analog channels provide V+I monitoring for each output plus input.
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Six Fault Relays – Separate fault indication for system faults.
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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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Main Control Cabinets – Provides power with integrated system monitoring, data acquisition, and diagnostics.
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Advanced I/O Racks – Powers racks requiring supervisory power management and data acquisition.
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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 integrated power reporting, predictive analytics, and data acquisition are required.
Competitive Comparison
| Aspect | DS3800NSCD1B1C (GE) | DS3800NSCD (baseline) | DS3800NSCC1D1A (GE) |
|---|---|---|---|
| +5V Output | 15A | 12A | 15A |
| ±15V Output | 3.5A each | 2.5A each | 4A each |
| Data Acquisition | Yes (dual‑channel ADC) | Yes (single‑channel) | No |
| Predictive Analytics | Yes | No | Yes |
| Event Logging | 5,000 events | 2,000 events | 5,000 events |
| SIL 2 | Yes | No | Yes |
| Price (refurb) | ~$5,800–$8,500 | ~$4,500–$6,500 | ~$5,500–$8,000 |
Selection Guidelines & Precautions
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Application Verification – Designed for integrated power management with data acquisition, predictive analytics, 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, data acquisition features unavailable.
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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‑100975 for installation and proof‑test intervals.
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Data Acquisition – Access acquired data via backplane communication using GE Service Tool Software.
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Spare Sourcing – Production ended in 2020. Request test report verifying outputs, data acquisition, predictive analytics, and event logging. Inspect for capacitor bulging or discoloration.
A-B 1747-L532
A-B 1746-NIO4V
A-B 1747-BA
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