Description
Technical Parameters
| Parameter | Specification |
|---|---|
| Input Voltage | 125 VDC nominal (range 100–150 VDC); 24 VDC compatible with external adapter |
| Battery Backup | Integrated battery charger (for external 12V/24V battery); automatic transfer to battery on input loss |
| Output Rails | +5 VDC / 6A (precision logic), ±15 VDC / 1.5A (each rail, precision analog) |
| Isolation | Full isolation (1.5kV input‑to‑output, 2.0kV output‑to‑ground) |
| Protection | Overcurrent protection (fixed), short‑circuit protection, transient suppression (4kV), reverse polarity protection, input undervoltage lockout, battery reverse protection |
| Regulation | Load regulation: ±0.05%; Line regulation: ±0.02%; Temperature coefficient: < 50 ppm/°C |
| Ripple | < 5mVpp (+5V), < 3mVpp (±15V) |
| Temperature Compensation | Active temperature compensation using precision reference ICs and thermistor‑based feedback networks |
| Battery Features | Automatic transfer (< 10ms), battery status monitoring, battery health indication, charger status |
| Monitoring | 4 analog feedback channels (voltage and current monitoring for outputs + battery status); 2 digital fault outputs (relay, 24V/0.5A) for system faults and battery status |
| 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 (for battery connection) |
| Status LEDs | 6 indicators: INPUT OK (green), OUTPUT OK (green), BATTERY OK (green), BATTERY CHARGING (amber), BATTERY ACTIVE (blue), FAULT (red) |
| Certifications | CE, UL 508 (non‑hazardous locations only) |
| Efficiency | ~76% at full load |
Critical note: The DS3800NTBD is a temperature‑compensated power board with battery backup. 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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Integrated Battery Backup – External battery connection with automatic transfer (< 10ms) on input loss.
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Precision Temperature Compensation – Maintains temperature coefficient of < 50 ppm/°C.
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Battery Health Monitoring – Monitors battery status and charger condition.
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Exceptional Regulation – Load regulation of ±0.05% and line regulation of ±0.02%.
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Full Isolation – 1.5kV isolation protects sensitive circuits.
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Two Fault Relays – Separate fault indication for system faults and battery status.
Typical Application Cases
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Critical Instrumentation Cabinets – Powers precision instruments requiring both power continuity and temperature stability.
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Calibration Laboratories – Supplies power to calibration equipment with battery backup.
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High‑Precision Measurement Systems – Powers vibration analysis and other critical measurement systems.
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Remote Locations – Provides power continuity during temporary input loss.
Selection Guidelines & Precautions
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Application Verification – Designed for precision instrumentation with battery backup.
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Physical Compatibility – 6HP wide, requires 1.5 adjacent slots.
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Backplane Compatibility – Uses P1 and P2 for battery connection. If backplane lacks P2, battery features unavailable.
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Battery Connection – Connect external battery to P2 connector. Use proper gauge wiring and fusing.
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Temperature Compensation – Requires 30‑minute warm‑up to achieve specified temperature coefficient.
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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, battery transfer, and temperature stability. Inspect for capacitor bulging or discoloration.
Mitsubishi FX3U-CNV-BD
VICKERS 507848
A-B 1756-N2
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