Parameter Specifications

1. Part Number: 5200D85

2. Manufacturer: Emerson Westinghouse

3. Applicable System: Common Q Class 1E Nuclear Safety DCS

4. Matching Equipment

   • Max load: 8 slots standard 4D33xxx series I/O terminal daughter cards

   • Redundant power supply: 475HP1ENA9GMT

   • Mainframe master communication backplane

5. PCB Material: Multi-layer thick copper zero-halogen V-0 flame retardant high-Tg FR-4

6. Mechanical Size: Standard 6U industrial subrack, depth matched to 145mm I/O daughter card

7. Ambient Operating Conditions

   Operating Temperature: -25℃ ~ +70℃

   Storage Temperature: -50℃ ~ +125℃

   Humidity: 5%–95% RH, non-condensing

8. Power Distribution Index

   Dual redundant DC12V / DC24V power input

   Single slot rated output power: 30W

   Independent overcurrent protection fuse for each slot

   Hot-swap soft-start circuit per slot to suppress plug surge current

9. Bus & Signal Design

   Isolated safety parallel signal bus + independent power bus + fault alarm bus

   Each slot integrated EMI filter to eliminate inter-slot signal crosstalk

   Slot connector gold plating thickness: 3μm anti-wear gold plating

10. Isolation & EMC Performance

    Inter-slot signal isolation: 1500V AC

    Power bus dielectric withstand: 2000V AC / 60s

    Power frequency interference attenuation ≥40dB, comply with nuclear standard EMC screening

11. Mechanical Reliability

    Continuous vibration resistance: 8g (10–150Hz)

    Shock resistance: 25g pulse, 11ms duration

    Reinforced metal fixed bracket, anti-loose installation structure

12. Core Features

    8-slot universal I/O subrack backplane; full hot-swap support; independent single-slot fault isolation; full compatibility with all G-version standard 4D33xxx I/O daughter modules; cost-effective general industrial cabinet solution.

13. Certifications: CE, UL508, IEC60204-1, NRC Class 1E nuclear safety qualification

14. Aging Test Standard: 72h full-load high-low temperature cyclic aging + electromagnetic stress screening

15. Design Service Life: ≥100,000 hours continuous 24/7 operation

16. Warranty Period: 12-month global warranty for original and factory refurbished backplanes

Application Fields

1. Nuclear Power Plant Common Q Safety Control Cabinets

   Standard 8-slot I/O subrack for normal heat-dissipation reactor auxiliary cabinets, mixed installation of analog input, RTD, thermocouple, digital input/output and pulse encoder modules for primary coolant, steam generator and containment conventional parameter monitoring.

2. AP1000 Post-Accident Monitoring System (PAMS)

   Deployed in normal temperature containment peripheral equipment rooms, carrying passive cooling system pressure, flow, temperature acquisition modules and accident state digital feedback I/O cards.

3. Thermal & Hydropower Station Main Control Cabinets

   8-slot universal subrack for boiler, turbine normal temperature control cabinets, equipped with pressure/liquid level analog modules, bearing temperature RTD and valve feedback DI modules.

4. Explosion-Proof Petrochemical Process Control Cabinets

   General industrial backplane for reaction tank, pipeline normal temperature hazardous zone cabinets, compatible with process AI, safety interlock DI/DO daughter cards.

5. Offshore Oil & Gas Platform Process Cabinets

   Standard subrack for platform medium temperature control cabinets, matched with flow pulse transmitters and pressure analog acquisition modules.

6. Nuclear Island Backup Diesel Generator Control Cabinets

   Carry exhaust temperature thermocouple, crankshaft speed encoder and safety trip interlock DI/DO modules.

5200D Series Model Coding & Version Distinction

1. Model digit rule

• 5200D04：4-slot backplane

• 5200D06：6-slot base model (G01 standard / H01 high-temp)

• 5200D85：8-slot general industrial base model (no suffix = standard G version)

• 5200D08：8-slot high-end reinforced variant (seismic enhanced)

2. Suffix version definition

• No suffix / Gxx: General industrial standard, operating temp -25~+70℃

• Hxx: High-temperature enhanced variant, upper limit +80℃, anti-oxidation conformal coating, thermal aging screening (e.g. 5200D06H01)

3. Product line division

• 4D33xxx: Front-end field signal I/O terminal daughter cards (AI/AO/DI/DO/Temp/Pulse/Encoder)

• 5200Dxxx: Subrack backplane rack accessories, power distribution + bus interconnection + mechanical carrier for I/O modules

Core Difference: 5200D85 vs High-Temp H-series (5200D06H01)

1. Temperature resistance: 5200D85 standard up to +70℃; H-suffix high-temp version up to +80℃ for near-primary high-heat cabinets

2. PCB coating: 5200D85 standard single-layer protective coating; H version triple anti-oxidation/anti-mold/salt-fog conformal coating

3. Connector gold plating: 5200D85 3μm standard gold; H version 5μm high-temperature wear-resistant thick gold

4. Component screening: 5200D85 conventional aging test; H version extended 144h high-temperature thermal soak screening

5. Applicable scenarios: 5200D85 for normal heat-dissipation general cabinets; H-suffix for containment wall, primary equipment adjacent poorly ventilated high-temperature cabinets