Parameter Specifications

1. Part Number: 4D33755G02

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, 475HP1ENA9GMT redundant rack power supply

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

6. Dimension & Weight: 120mm × 66mm × 20.6mm; Net weight: 59g

7. Ambient Conditions: Operating temperature -25℃ ~ +70℃; Storage temperature -50℃ ~ +125℃; Humidity 5%–95% RH, non-condensing

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

9. Output Channels: 12 fully independent galvanic isolated discrete output channels

10. Drive Type: Isolated transistor switching output for low-power field safety loads

11. Per-channel Continuous Rated Current: 0.7A

12. Isolation Performance: 1800V AC isolation voltage per channel; 2000V AC dielectric withstand for 60s; Insulation resistance ≥1200MΩ @ 500VDC

13. EMC Index: Power frequency interference attenuation ≥45dB, compliant with IEC 61000-6-2 industrial EMC standard

14. Protection & Diagnosis: Per-channel precision constant current limiting protection, bidirectional high-energy surge absorption, reverse polarity lockout, real-time open-circuit/short-circuit fault detection, high-precision timestamp fault code upload to master controller

15. Mechanical Performance: Continuous vibration resistance 8g (10–150Hz); Shock resistance 25g pulse, duration 11ms

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

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

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

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

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

Application Fields

1. Nuclear power plant Common Q Class 1E safety I&C racks: Reinforced isolation switching drive terminal for auxiliary cabinet safety solenoid valves, local accident alarm lights and safety auxiliary control contactors

2. AP1000 nuclear Post-Accident Monitoring System (PAMS): High anti-interference isolated switching output board for containment auxiliary vent isolation valves and core accident annunciator devices

3. Thermal & hydropower station main control systems: Upgraded discrete output module for boiler emergency drain solenoid valves, flue gas isolation dampers and unit critical fault alarm buzzers

4. High-risk explosion-proof petrochemical DCS distributed control system: Premium safety drive wiring card for reactor emergency cut-off solenoid valves, storage tank overpressure alarm horns and process pump control contactors

5. Offshore oil & gas explosion-proof automation racks: Anti-vibration safety signal isolation drive interface for wellhead emergency shutdown ESD solenoids, platform warning light arrays and heating equipment control contactors

6. Large diesel generator safety sequential control cabinets: Discrete output subcard for unit emergency stop solenoids, critical fault alarm horns and cooling water pump control contactors

7. Municipal large-scale water treatment safety interlock DCS systems: Reinforced isolation switching drive terminal for pipeline inlet emergency shut-off solenoids, chemical dosing equipment contactors and tank overflow alarm devices

8. Metallurgy and cement kiln production lines: High-reliability safety discrete drive module for kiln high-temperature isolation solenoids, dust removal fan control contactors and kiln over-temperature alarm horns