Description
Technical Parameters
| Parameter | Specification |
|---|---|
| Input Voltage | 125 VDC nominal (range 85–165 VDC); 24 VDC compatible with external adapter |
| Output Rails | +5 VDC / 20A (main logic), ±15 VDC / 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: ±0.12%; Line regulation: ±0.05%; Ripple: < 10mVpp (+5V), < 7mVpp (±15V) |
| Wide‑Area Communication | Onboard Ethernet/Modbus TCP with TLS encryption and SNMPv3 for secure remote monitoring; communicates with main CPU via backplane |
| Monitoring | 10 analog feedback channels (voltage and current monitoring for each output rail, plus input voltage, current, and temperature monitoring); 8 digital fault outputs (relay, 24V/2A) for system faults |
| Digital Interface | 8 digital inputs for external control; 12 digital outputs for system status indication |
| Supervisory Control | Onboard dual‑core ARM Cortex‑M7 microcontroller for diagnostic reporting, system health monitoring, predictive failure analytics (capacitor ESR, MOSFET health), event logging (10,000‑event buffer), programmable load shedding, and cybersecurity features (TLS, SNMPv3, RBAC) |
| Operating Temperature | –40°C to +75°C |
| Form Factor | 6U × 6HP (30mm) – requires 1.5 slots |
| Backplane Connector | Standard VME 96‑pin P1 + reinforced 60‑pin P2 |
| Status LEDs | 12 indicators: +5V OK (green), +15V OK (green), –15V OK (green), SYSTEM OK (green), FAULT (red), COMM ACTIVE (white), WAN ACTIVE (blue), OVERTEMP (yellow), PREDICTIVE ALERT (purple), INPUT STATUS (orange), SECURE COMM (green flash), LOAD SHED ACTIVE (amber) |
| Certifications | CE, UL 508, CSA Class I Div 2, IEC 61508 SIL 3 (TÜV‑certified), IEC 62443‑3‑3 (cybersecurity) |
| Efficiency | ~87% at full load |
Critical note: The DS3800NSWB1C1B is a supervisory control and wide‑area monitoring interface with the highest capacity in the NSW family (20A +5V, 5A ±15V), advanced diagnostics, predictive analytics, SIL 3 certification, and cybersecurity features. 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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Highest Capacity in NSW Family – +5V at 20A and ±15V at 5A—higher than 1B1B (18A, 4.5A) and baseline NSWB (15A, 3.5A).
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Enhanced Cybersecurity – TLS encryption, SNMPv3, and RBAC for secure remote monitoring (IEC 62443‑3‑3 compliant).
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Dual‑Core Intelligent Control – Dual‑core ARM Cortex‑M7 for advanced predictive analytics, event logging (10,000 events), and diagnostic reporting.
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Predictive Analytics – Monitors capacitor ESR and MOSFET health; purple LED warns before failure.
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Comprehensive Monitoring – Ten analog channels provide V+I monitoring for each output plus input, current, and temperature.
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Eight Fault Relays – Separate fault indication for system faults.
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SIL 3 Certification – Highest functional safety level in the DS3800 series.
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Programmable Load Shedding – Sheds non‑critical outputs during undervoltage conditions.
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Wide Temperature Range – –40°C to +75°C.
Typical Application Cases
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Main Control Cabinets – Provides power with integrated wide‑area monitoring, diagnostics, and cybersecurity.
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Remote Monitoring Systems – Powers racks requiring secure remote communication capabilities.
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Safety‑Related Systems – SIL 3 certification makes it suitable for the most critical safety applications.
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System Integration Projects – Used when remote power reporting, predictive analytics, and cybersecurity are required.
Competitive Comparison
| Aspect | DS3800NSWB1C1B (GE) | DS3800NSWB1B1B (GE) | DS3800NSWA1A1C (GE) |
|---|---|---|---|
| +5V Output | 20A | 18A | 12A |
| ±15V Output | 5A each | 4.5A each | 2.5A each |
| Monitoring Channels | 10 (V+I+T) | 8 (V+I) | 8 (V+I) |
| Fault Relays | 8 | 6 | 6 |
| Cybersecurity | Yes | Yes | No |
| SIL 3 | Yes | Yes | SIL 2 |
| Price (refurb) | ~$7,800–$11,500 | ~$7,000–$10,000 | ~$5,500–$8,000 |
The DS3800NSWB1C1B is the ultimate supervisory control and wide‑area monitoring interface in the DS3800 series, offering the highest capacity, SIL 3 certification, and comprehensive cybersecurity features.
Selection Guidelines & Precautions
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Application Verification – Designed for integrated power management with wide‑area monitoring, predictive analytics, SIL 3, and cybersecurity.
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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 Ethernet/Modbus TCP, TLS, and SNMPv3 parameters via backplane communication using GE Service Tool Software (version 6.0 or higher).
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Cybersecurity – Change default passwords, disable unused services, and configure RBAC per IEC 62443‑3‑3 guidelines.
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Load Shedding Configuration – Program priority levels via backplane communication.
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Thermal Derating – Full output to 65°C; derate to 90% at 65–70°C, 80% at 70–75°C. Do not operate above 75°C.
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SIL 3 Compliance – Follow GE safety manual GEI‑101038 for installation and proof‑test intervals.
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Spare Sourcing – Production ended in 2022. Request test report verifying outputs, communication functions, predictive analytics, event logging, and load shedding. Inspect for capacitor bulging or discoloration. Prioritize this for the most demanding applications requiring maximum capacity and SIL 3 certification.
A-B 1756-TBNH
FANUC A98L-0031-0028
SIEMENS 3RT6024-1BB40
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