Parameter Specifications

1. Part Number: 4D33646G03

2. Manufacturer: Emerson Westinghouse

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

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

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

6. Dimension & Weight: 118mm × 64.5mm × 19.7mm; Net weight: 55g

7. Ambient Conditions: Operating temperature -30℃ ~ +75℃; Storage temperature -50℃ ~ +130℃; Humidity 5%~98% RH, non-condensing

8. Power Input: DC 12V / DC 24V dual adaptive power supply

9. Input Channels: 16 fully independent galvanic isolated discrete input channels

10. Supported Signal Type: Passive dry contact, mechanical limit switch, valve position feedback contact, relay auxiliary interlock contact

11. Isolation Performance: 2000V AC isolation voltage per channel; 2000V AC dielectric withstand for 60s; Insulation resistance ≥1500MΩ @ 500VDC

12. EMC Standard: Power frequency interference attenuation ≥50dB, compliant with IEC 61000-6-2 industrial EMC specification

13. Protection & Diagnosis: Per-channel precision current-limiting protection, bidirectional ultra-high-energy surge absorption, reverse polarity lockout, real-time open-circuit/short-circuit fault detection, microsecond high-precision timestamp fault code upload, fault transient waveform capture

14. Mechanical Reliability: Continuous vibration resistance 10g (10–150Hz); Shock resistance 30g pulse, duration 11ms

15. Core Feature: Single-module hot swappable under energized rack

16. Certifications: CE, UL508, IEC60204-1, NRC Class 1E nuclear safety certification

17. Aging Test Standard: 96-hour full-load high-low temperature cyclic aging test with thermal cycle fatigue verification

18. Design Service Life: ≥150,000 hours of 24/7 uninterrupted continuous operation

19. Warranty: 12-month global unified warranty for original and refurbished modules

Application Fields

1. Nuclear power plant Common Q Class 1E safety I&C racks: High-reliability signal acquisition terminal for reactor core auxiliary cabinet valve position feedback and critical safety interlock limit switches

2. AP1000 nuclear Post-Accident Monitoring System (PAMS): Reinforced isolation signal conversion board for containment auxiliary equipment passive dry contact feedback signals

3. Thermal & hydropower station main control systems: High-stability input module for boiler main flame feedback, main water level interlock and turbine critical safety limit switches

4. High-risk explosion-proof petrochemical DCS: Premium signal wiring card for core reactor safety interlock switches and critical tank position feedback contacts

5. Offshore oil & gas explosion-proof automation racks: Anti-vibration signal isolation interface for wellhead primary emergency valve feedback and process safety interlock contacts

6. Large diesel generator safety sequential control cabinets: Discrete input subcard for unit overspeed primary feedback and cooling system critical fault passive switches

7. Municipal large-scale water treatment safety interlock DCS: High-isolation signal terminal for main liquid level limit and emergency gate position interlock switches

8. Metallurgy and cement kiln production lines: Heavy-duty signal acquisition module for furnace core safety door interlock and high-pressure overprotection passive contacts