Parameter Specifications

1. Part Number: 4D33865G02

2. Manufacturer: Emerson Westinghouse

3. Compatible System: Common Q Class 1E Safety Instrument & Control DCS System

4. Matching Accessories: Discrete output master logic boards, 49E-3649 rack backplane 49E-3649, redundant power supply 475HP1ENA9GMT

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

6. Dimension & Weight: 145mm × 66mm × 20.6mm; Net Weight: 64g

7. Ambient Operating Envelope

   Operating Temp: -25℃ ~ +70℃

   Storage Temp: -50℃ ~ +125℃

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

8. Power Supply: DC 12V / DC 24V dual wide-range adaptive input

9. Output Channels: 16 fully independent galvanic isolated discrete output channels

10. Drive Topology: Isolated transistor sinking/sourcing switching output for nuclear-grade low-power safety field loads

11. Per-Channel Continuous Rated Load Current: 0.7A

12. Isolation Index

    Single channel 1800V AC isolation withstand; 2000V AC dielectric strength test for 60s; Insulation resistance ≥1200MΩ @500VDC

13. EMC Anti-interference Performance

    Power frequency interference attenuation ≥45dB, fully compliant with IEC 61000-6-2 industrial EMC specification

14. Protection & Intelligent Diagnosis Functions

    • Per-channel high-precision constant current limiting protection

    • Bidirectional high-energy surge absorption circuit

    • Reverse wiring polarity lockout protection

    • Real-time detection of output loop open-circuit / short-circuit load fault

    • High-precision time-stamped fault code real-time upload to master controller

15. Mechanical Reliability

    Continuous vibration resistance 8g (10–150Hz); Shock resistance 25g pulse, 11ms duration

16. Core Feature: Single module hot swappable under energized rack without interrupting safety control loops

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

18. Aging Validation Standard: 72-hour full-load high-low temperature cyclic aging test

19. Design Service Life: ≥100,000 hours of 24/7 unattended continuous operation

20. Warranty Period: 12-month global unified warranty for original factory modules and certified factory refurbished modules

Application Fields

1. Nuclear Power Plant Common Q Safety I&C Racks

   Reinforced high-density multi-point safety switching drive terminal for reactor auxiliary cabinets, driving batch cooling system isolation solenoid valves, containment multi-group accident warning light arrays and primary safety-grade auxiliary control contactor banks.

2. AP1000 Nuclear Post-Accident Monitoring System (PAMS)

   High anti-interference high-density isolated switching output board for containment multi-channel core isolation vent valves and reactor core full-set multi-stage accident annunciator alarm devices.

3. Thermal & Hydropower Station Main Control Systems

   Upgraded high-density DO output module for boiler batch emergency cut-off drain solenoid valves, multi-group main flue gas safety isolation dampers and unit multi-path primary critical fault alarm buzzers.

4. High-Risk Explosion-Proof Petrochemical DCS Distributed Control System

   Premium high-density safety drive wiring card for reactor cluster emergency shutdown solenoid valves, storage tank multi-group overpressure safety alarm horns and main process pump primary control contactor banks.

5. Offshore Oil & Gas Explosion-Proof Automation Racks

   Anti-vibration stable high-density isolation drive interface for wellhead multi-way ESD emergency shutdown solenoid groups, platform multi-level warning light banks and heating system main control contactor arrays.

6. Large Diesel Generator Safety Sequential Control Cabinets

   Multi-point discrete output subcard for unit emergency stop solenoid groups, multi-path core mechanical fault alarm horns and cooling water main pump control contactor banks.

7. Municipal Large-Scale Water Treatment Safety Interlock DCS Systems

   Reinforced high-density isolation switching drive terminal for pipeline inlet batch emergency shut-off solenoids, chemical dosing main equipment contactor groups and sedimentation tank multi-point overflow safety alarm devices.

8. Metallurgy & Cement Kiln Production Lines

   High-reliability high-density safety discrete drive module for kiln batch high-temperature isolation solenoids, dust removal primary fan control contactor banks and kiln multi-channel over-temperature protection alarm horns.