Description
Technical Parameters
| Parameter | Specification |
|---|---|
| Input Voltage | 125 VDC nominal (range 100–150 VDC); 24 VDC compatible with external adapter |
| 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 |
| 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 |
| Communication Interface | RS‑485/Modbus interface for external device communication; communicates with main CPU via backplane |
| Diagnostic Features | Onboard diagnostic engine for power supply health monitoring; event logging (2,000‑event buffer) |
| Monitoring | 4 analog feedback channels (voltage and current monitoring for outputs); 2 digital fault outputs (relay, 24V/0.5A) for system faults and diagnostic alerts |
| 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), SYSTEM OK (green), FAULT (red), COMM ACTIVE (white), DIAGNOSTIC ALERT (orange) |
| Certifications | CE, UL 508 (non‑hazardous locations only) |
| Efficiency | ~78% at full load |
Critical note: The DS3800NTCD is a temperature‑compensated power board with communications and diagnostics. 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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Precision Temperature Compensation – Maintains temperature coefficient of < 50 ppm/°C.
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Communication Interface – RS‑485/Modbus for external device communication.
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Diagnostic Engine – Onboard diagnostics for power supply health monitoring.
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Event Logging – 2,000‑event buffer for failure analysis.
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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 diagnostic alerts.
Typical Application Cases
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Instrumentation Cabinets – Powers precision instruments requiring temperature stability and communication.
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Calibration Laboratories – Supplies power to calibration equipment with diagnostic monitoring.
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High‑Precision Measurement Systems – Powers vibration analysis and other critical measurement systems.
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System Integration Projects – Used when communication and diagnostic reporting are required.
Selection Guidelines & Precautions
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Application Verification – Designed for precision instrumentation with communication and 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, communication features unavailable.
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Communication Configuration – Configure RS‑485/Modbus parameters via backplane communication using GE Service Tool Software.
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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, communication functions, and temperature stability. Inspect for capacitor bulging or discoloration.
A-B 1769-ECR
NORGREN 18-013-909
SIEMENS 6ES7972-0BA12-0XA0
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