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4D33711G01 Standard 16-Channel Isolated Discrete Output Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS

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4D33711G01 Standard 16-Channel Isolated Discrete Output Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS
June 10, 2026

4D33711G01 Standard 16-Channel Isolated Discrete Output Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS

NRC Class 1E nuclear safety qualified, the 4D33711G01 is a standard discrete output terminal daughter card developed for Emerson Westinghouse Common Q safety I&C platform. It converts digital logic control signals from main controllers into isolated switching signals to drive field solenoid valves, alarm horns, contactors and auxiliary actuators. Each channel adopts independent 1500V galvanic isolation and multi-stage LC EMI filters to suppress power frequency interference, ground loop offset and lightning transient surges. Equipped with standard hard gold-plated backplane connectors and corrosion-resistant nickel screw terminals, this card integrates full basic channel protection, open/short-circuit fault detection and hot-swap capability, delivering stable switching drive for conventional auxiliary nuclear safety equipment under high-temperature, humid and dusty industrial environments.

Description

Parameter Specifications

  1. Part Number: 4D33711G01

  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 isolated V-0 flame-retardant high-Tg FR-4

  6. Dimension & Weight: 118mm × 64.5mm × 19.7mm; Net weight: 53g

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

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

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

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

  11. Per-channel Continuous Rated Current: 0.7A

  12. Isolation Performance: 1500V AC isolation voltage per channel; 2000V AC dielectric withstand for 60s; Insulation resistance ≥1200MΩ @ 500VDC

  13. EMC Index: Power frequency interference attenuation ≥40dB, compliant with IEC 61000-6-2 industrial EMC standard

  14. Protection & Diagnosis: Per-channel current-limiting protection, bidirectional surge absorption, reverse polarity protection, open-circuit/short-circuit fault detection, real-time fault status upload to main 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

Application Fields

  1. Nuclear power plant Common Q Class 1E safety I&C racks: Switch drive terminal for auxiliary cabinet solenoid valves, local alarm horns and auxiliary contactors

  2. AP1000 nuclear Post-Accident Monitoring System (PAMS): Isolated switching output board for containment auxiliary vent valves and accident annunciators

  3. Thermal & hydropower station control systems: Discrete output module for boiler drain solenoids, smoke exhaust dampers and unit alarm buzzers

  4. Explosion-proof petrochemical DCS distributed control system: Drive wiring card for reactor cut-off solenoid valves, tank alarm horns and pump auxiliary contactors

  5. Offshore oil & gas explosion-proof automation racks: Isolation drive interface for wellhead emergency shut-off solenoids, platform alarm lights and heating contactors

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

  7. Municipal large-scale water treatment safety interlock DCS: Switch drive terminal for inlet shut-off solenoids, dosing equipment contactors and overflow alarm devices

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


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