Description
Technical Parameters
| Parameter | Specification |
|---|---|
| Input Voltage | 125 VDC nominal (range 100–150 VDC); 24 VDC compatible with external adapter |
| Output Rails | +5 VDC / 12A (main logic), ±15 VDC / 2.5A (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 (4kV), reverse polarity protection, input undervoltage lockout |
| Regulation | Load regulation: ±0.3%; Line regulation: ±0.15%; Ripple: < 20mVpp (+5V), < 15mVpp (±15V) |
| Monitoring | 6 analog feedback channels (voltage and current monitoring for each output rail, plus input monitoring); 4 digital fault outputs (relay, 24V/1A) for system faults |
| Diagnostic Features | Onboard diagnostic engine for advanced system health monitoring; event logging (3,000‑event buffer); predictive failure indicators; communicates with main CPU via backplane |
| Digital Interface | 4 digital inputs for external control; 6 digital outputs for system status indication |
| Operating Temperature | –25°C to +60°C |
| Form Factor | 6U × 6HP (30mm) – requires 1.5 slots |
| Backplane Connector | Standard VME 96‑pin P1 + reinforced 60‑pin P2 |
| Status LEDs | 8 indicators: +5V OK (green), +15V OK (green), –15V OK (green), SYSTEM OK (green), FAULT (red), COMM ACTIVE (white), OVERTEMP (yellow), DIAGNOSTIC ALERT (orange) |
| Certifications | CE, UL 508, CSA Class I Div 2 |
| Efficiency | ~84% at full load |
Critical note: The DS3800NSCE is a supervisory control and enhanced diagnostics power interface. 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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Enhanced Diagnostics – Onboard diagnostic engine for advanced system health monitoring.
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Predictive Failure Indicators – Early warning of potential component failure.
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Event Logging – 3,000‑event buffer for failure analysis.
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Comprehensive Monitoring – Six analog channels provide V+I monitoring for each output plus input.
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Four Fault Relays – Separate fault indication for system faults.
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Full Isolation – 1.5kV isolation protects sensitive circuits.
Typical Application Cases
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Main Control Cabinets – Provides power with integrated system monitoring and advanced diagnostics.
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Advanced I/O Racks – Powers racks requiring supervisory power management and diagnostic capabilities.
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System Integration Projects – Used when integrated power reporting and diagnostic data are required.
Selection Guidelines & Precautions
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Application Verification – Designed for integrated power management with enhanced diagnostics.
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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, diagnostic features unavailable.
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Thermal Derating – Full output to 50°C; derate to 90% at 50–55°C, 80% at 55–60°C.
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Spare Sourcing – Production ended in 2010. Request test report verifying outputs and diagnostic functions. Inspect for capacitor bulging or discoloration.
A-B 1756-TBNH
A-B 1756-TBCH
A-B 1756-BA2
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