Parameter Specifications

1. Part Number: 4D33646G05

2. Manufacturer: Emerson Westinghouse

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

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

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

6. Dimension & Weight: 118mm × 64.5mm × 19.7mm; Net Weight: 56g

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

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

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

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

11. Isolation Index: Single channel isolation withstand voltage 2500V AC; Dielectric withstand 2500V AC for 60s; Insulation resistance ≥1500MΩ @500VDC

12. EMC Anti-interference: Power frequency interference attenuation ≥60dB, complies with IEC 61000-6-2 industrial EMC standard

13. Protection & Intelligent Diagnosis: Per-channel precision constant current limiting protection, bidirectional ultra-high-energy surge absorption, reverse polarity lockout, microsecond-level open/short-circuit instant detection, real-time fault identification, microsecond high-precision timestamp fault upload, fault transient waveform full capture, permanent non-volatile historical fault storage and fault trend predictive early warning output

14. Mechanical Reliability: Continuous vibration resistance 15g (10–150Hz); Shock resistance 35g pulse, 11ms duration

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

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

17. Aging Test Standard: 120-hour full-load high-low temperature cyclic aging test plus thermal cycle fatigue durability test

18. Design Service Life: ≥180,000 hours of 24/7 uninterrupted continuous operation

19. Warranty Period: 18-month global unified warranty for original and factory refurbished modules

Application Fields

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

2. AP1000 nuclear Post-Accident Monitoring System (PAMS): Top-tier reinforced isolation signal conversion board for containment primary safety equipment passive dry contact feedback signals

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

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

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

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

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

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