Description
Technical Parameters
| Parameter | Specification |
|---|---|
| Input Voltage | 125 VDC nominal (range 100–150 VDC); 24 VDC compatible with external adapter |
| Output Rails | +5 VDC / 5A (logic), ±15 VDC / 1A (each rail, analog), Charger Output: 12–28 VDC / 5A (adjustable) |
| 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: ±0.5%; Line regulation: ±0.2%; Ripple: < 30mVpp (+5V), < 20mVpp (±15V), < 50mVpp (charger) |
| Battery Charging | Adjustable charging voltage (12–28 VDC) via onboard potentiometer; automatic charge current limiting; battery temperature monitoring |
| Monitoring | 4 analog feedback channels (voltage and current monitoring for charger and +5V); 2 digital fault outputs (relay, 24V/0.5A) for system faults and battery status |
| Digital Interface | 2 digital inputs for external control; 4 digital outputs for 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 | 6 indicators: INPUT OK (green), OUTPUT OK (green), CHARGER OK (green), BATTERY CHARGING (amber), FAULT (red), BATTERY LOW (red flash) |
| Certifications | CE, UL 508 (non‑hazardous locations only) |
| Efficiency | ~78% at full load |
Critical note: The DS3800NVBC is a variable voltage battery charging power board with adjustable charger output (12–28 VDC). 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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Adjustable Battery Charging – 12–28 VDC adjustable output via onboard potentiometer.
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Battery Status Monitoring – Monitors battery voltage, current, and temperature.
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Full Isolation – 1.5kV isolation protects sensitive circuits.
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Automatic Current Limiting – Protects battery from overcharge.
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Two Fault Relays – Separate fault indication for system faults and battery status.
Typical Application Cases
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Battery Backup Cabinets – Provides adjustable charging for backup batteries.
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UPS Systems – Charges batteries in uninterruptible power systems.
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Critical Power Distribution – Powers logic and charges batteries in critical applications.
Selection Guidelines & Precautions
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Application Verification – Designed for battery charging with adjustable output.
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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, charger features unavailable.
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Voltage Adjustment – Adjust charger voltage via onboard potentiometer. Use precision voltmeter for calibration.
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Battery Connection – Connect battery to P2 connector. Use proper gauge wiring and fusing.
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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 charging functions. Inspect for capacitor bulging or discoloration.
A-B 1756-TBNH
A-B 1756-TBNH
A-B 1746-N2
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