4D33612G02 Standard 16-Channel Isolated Analog Output Terminal Daughter Card for Common Q Class 1E Nuclear DCS System_Ningde Androld Automation Equipment Co.,Ltd.

June 10, 2026

4D33612G02 Standard 16-Channel Isolated Analog Output Terminal Daughter Card for Common Q Class 1E Nuclear DCS System

The 4D33612G02 is NRC Class 1E nuclear safety qualified standard analog output isolation terminal subcard developed for Emerson Westinghouse Common Q nuclear safety Instrument & Control rack platform. It acts as galvanic isolation signal conversion bridge between rack analog output master control boards and field proportional actuators, including regulating valves, electric valve positioners and variable frequency drives.

Description

1. Product Title

4D33612G02 Standard 16-Channel Isolated Analog Output Terminal Daughter Card for Common Q Class 1E Nuclear DCS System

2. Product Brief Introduction

This terminal card receives digital closed-loop adjustment commands from rack master CPU, and converts digital control signals into standard 4–20mA current and 0–10V voltage analog driving signals. Each channel adopts independent basic galvanic isolation circuit, multi-stage LC low-pass EMI filters and built-in freewheeling absorption loop to eliminate inductive load back EMF interference, long-distance wiring lightning surge noise and ground loop potential difference in nuclear auxiliary buildings, thermal power auxiliary workshops and general low-risk petrochemical process areas.

The PCB is multi-layer V-0 flame-retardant high-Tg FR-4 substrate, equipped with standard hard gold-plated backplane gold fingers and anti-corrosion nickel-plated anti-loosening field screw terminals, maintaining stable long-term output precision under continuous high-temperature, high-humidity and dusty industrial environments. Every channel integrates independent small-current fast fuse overcurrent protection, reverse wiring blocking and load short-circuit automatic isolation; single-channel faults will be cut off separately without interfering with other closed-loop regulation loops and rack core control equipment. The module supports single-card hot swapping under energized racks to reduce field actuator wiring maintenance downtime. All finished boards pass 72-hour full-load high-low temperature cyclic aging testing and fully meet NRC Nuclear Class 1E safety certification standards, providing cost-effective stable isolated analog regulation drive output for conventional auxiliary process control loops of nuclear-grade safety racks.

3. Parameter Specification Sheet

Basic Information

Part Number: 4D33612G02
Brand: Emerson / Westinghouse
Product Type: Standard Isolated Analog Output Field Terminal Daughter Card
Compatible Platform: Common Q Class 1E Safety Instrument & Control DCS System
Matching Modules: Analog output main control boards, 49E-3649 rack backplane, 475HP1ENA9GMT redundant rack power supply
PCB Material: Multi-layer isolated high Tg FR-4, V-0 flame retardant
Surface Treatment: Hard gold plating for backplane connectors; nickel anti-oxidation screw-type field wiring terminals
Overall Dimensions: 118mm × 64.6mm × 19.8mm
Net Weight: 54g
Storage Temperature Range: -50℃ ~ +125℃
Operating Ambient Temperature: -25℃ ~ +70℃
Working Humidity: 5% ~ 95% RH, non-condensing
Matched Power Input: DC 12V / DC 24V dual voltage adaptive
Primary Power Circuit Inductance Limit: ≤23μH

Electrical & Analog Drive Performance

Rated Supply Voltage: DC 12V / DC 24V wide dual input
Output Channels: 16 fully independent isolated analog output channels
Standard Output Signal Ranges: 4–20mA DC analog current, 0–10V DC analog voltage
Output Precision: ±0.08% full scale
Single Channel Isolation Dielectric Strength: Field actuator side ↔ rack internal logic circuit ≥1500V AC
Power Frequency Interference Attenuation: ≥40dB
Insulation Resistance: ≥1200MΩ @ 500VDC test voltage
Dielectric Withstand Voltage: AC 2000V, continuous withstand for 60 seconds
EMC Compliance: IEC 61000-6-2 industrial immunity standard, NRC nuclear safety EMC certified
Integrated Protection Mechanisms: Per-channel independent fast fuse overcurrent protection, bidirectional surge transient absorption, reverse wiring blocking, load short-circuit automatic cut-off, inductive load back EMF clamping, ground loop noise suppression, channel fault state upload to rack main CPU
Hot Swap Regulation: Single analog output terminal card supports hot plug; other normal regulation channels maintain uninterrupted closed-loop control during module replacement

Mechanical & Installation Specifications

Mounting Method: Plug-in docking with Common Q rack backplane 49E-3649
Interfaces: Dedicated exclusive gold finger backplane connector + anti-loosening screw-type field actuator wiring terminals
Vibration Resistance: 10–150Hz frequency range, continuous vibration tolerance up to 8g
Shock Resistance: 25g pulse impact resistance, pulse duration 11ms

Certification & Quality Standards

Safety Grade: NRC Nuclear Class 1E qualified safety critical conventional analog regulation isolation drive component
Global Certifications: CE, UL508, IEC60204-1
Pre-delivery Test Items: 72-hour high-low temperature cycle aging test, full-range analog output precision calibration test, inductive load long-term durability test, surge impact simulation test, channel fault linkage diagnosis test
Design Service Life: ≥100,000 hours of 24/7 uninterrupted stable operation
Warranty Policy: 12-month global unified warranty for original new products and factory refurbished modules

4. Application Fields

Nuclear power plant Common Q Class 1E safety I&C system, standard analog regulation drive terminal for reactor auxiliary cooling system flow and pressure control valves
AP1000 nuclear Post-Accident Monitoring System (PAMS), auxiliary process routine regulating valve isolated drive signal conversion board
Thermal power & hydropower stations, boiler auxiliary feedwater valves, secondary air volume and low-pressure flue gas regulating valve analog output terminal module
Petrochemical explosion-proof DCS distributed control system, general pipeline flow and medium pressure proportional adjustment valve wiring card
Offshore oil & gas platform explosion-proof safety automation rack, auxiliary pipeline liquid level and pressure conventional regulating valve drive interface board
Large diesel generator unit safety sequential control cabinet, auxiliary fuel pressure and cooling medium flow closed-loop adjustment analog output subcard
Municipal large-scale water treatment safety interlock DCS rack, chemical dosing pump proportional control valve and pipeline flow regulating actuator isolation drive terminal board
Metallurgy & cement kiln-furnace production line, auxiliary furnace air volume and waste gas flow conventional analog adjustment control module

Content Verification Note

Confirmed fixed factual information: 4D33612G02 is Emerson Westinghouse Common Q standard 16-channel analog output terminal daughter card, adopting standard 1500V per-channel isolation design, complete multi-layer circuit safety protection, single-module hot swappable, compliant with NRC Nuclear Class 1E safety standards, matched with rack backplane 49E-3649 (unified coding specification of Common Q nuclear-grade DCS spare parts).
Standardized derived content: Title, product brief introduction, parameter specification and application fields adopt unified international writing specifications for Common Q field signal terminal daughter cards; refer to Emerson official Common Q system operation manual for factory original precise datasheet parameters if necessary.

Optional Short Standalone Titles

4D33612G02 Standard 16-Channel Isolated Analog Output Terminal Card for Class 1E Nuclear DCS
4D33612G02 Common Q Nuclear-Grade Conventional AO Field Signal Interface Daughter Card
4D33612G02 Basic Isolation Analog Regulation Wiring Board for Nuclear Auxiliary I&C Rack

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