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4A06727G13 Multi-Function Universal Isolated Field Signal Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS System

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4A06727G13 Multi-Function Universal Isolated Field Signal Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS System
June 10, 2026

4A06727G13 Multi-Function Universal Isolated Field Signal Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS System

The 4A06727G13 is a high-reliability nuclear safety-grade universal signal terminal subcard developed for Emerson Westinghouse Common Q Class 1E safety Instrument & Control platform. It integrates multi-type signal isolation and conversion functions, serving as a unified wiring bridge between on-site instruments, sensors, switch contacts, small actuators and rack internal acquisition/output main boards. This module supports adaptive access to discrete dry contact signals, 4–20mA/0–10V analog signals and PT100 RTD temperature signals, realizing galvanic isolation, multi-stage EMI filtering and bidirectional surge suppression for all signal channels.

Description

1. Product Title

4A06727G13 Multi-Function Universal Isolated Field Signal Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS System

2. Product Brief Introduction

The 4A06727G13 is a high-reliability nuclear safety-grade universal signal terminal subcard developed for Emerson Westinghouse Common Q Class 1E safety Instrument & Control platform. It integrates multi-type signal isolation and conversion functions, serving as a unified wiring bridge between on-site instruments, sensors, switch contacts, small actuators and rack internal acquisition/output main boards. This module supports adaptive access to discrete dry contact signals, 4–20mA/0–10V analog signals and PT100 RTD temperature signals, realizing galvanic isolation, multi-stage EMI filtering and bidirectional surge suppression for all signal channels.
Adopting reinforced isolation transformers and multi-layer LC noise reduction circuits, it effectively eliminates ground loop potential difference, industrial frequency interference and lightning transient surges generated by long-distance field cables in nuclear containment, thermal power boiler areas and petrochemical explosion-proof hazardous environments. The PCB is multi-layer V-0 flame-retardant high-Tg FR-4 substrate, equipped with thickened hard gold-plated backplane gold fingers and anti-corrosion nickel-gold anti-loosening field wiring terminals, maintaining stable signal transmission accuracy under long-term high-temperature, high-humidity and dusty harsh working conditions. Each channel is independently configured with fast fuse overcurrent protection, reverse wiring blocking and short-circuit automatic isolation; built-in full-channel real-time fault self-diagnosis function can upload timestamped fault codes to the rack diagnostic board without affecting the normal operation of other signal loops and core rack control equipment. The card supports single-module hot swapping under energized racks to reduce multi-type instrument wiring maintenance downtime on site. All finished modules pass 72-hour full-load high-low temperature cyclic aging calibration and fully comply with NRC Nuclear Class 1E safety certification standards, providing a compact, universal isolated signal access solution for multi-measuring-point safety-critical control racks.

3. Parameter Specification Sheet

Basic Information

  • Part Number: 4A06727G13

  • Brand: Emerson / Westinghouse

  • Product Type: Universal Multi-Signal Isolated Field Terminal Daughter Card

  • Compatible Platform: Common Q Class 1E Safety Instrument & Control DCS System

  • Matching Supporting Modules: All analog, discrete, temperature acquisition/output main 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: Thick hard gold plating for backplane connectors; nickel-gold oxidation-resistant screw-type field wiring terminals

  • Overall Dimensions: 120mm × 66mm × 20.6mm

  • Net Weight: 58g

  • 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 wide voltage adaptive

  • Primary Power Circuit Inductance Limit: ≤23μH

Electrical & Multi-Signal Performance

  • Rated Supply Voltage: DC 12V / DC 24V dual wide input

  • Total Signal Channels: 12 fully independent universal isolated channels, configurable for DI/AI/RTD via internal jumpers

  • Supported Field Signal Types:

    1. Discrete Input: Passive dry contact limit/interlock switches

    2. Analog Input: 4–20mA DC, 0–10V DC standard transmitter signals

    3. Temperature Input: 3-wire PT100 RTD sensors

  • Single Channel Isolation Dielectric Strength: Field side ↔ rack internal logic circuit ≥1800V AC

  • Power Frequency Interference Attenuation: ≥45dB

  • Signal Conversion Precision: ±0.06% full scale for analog & temperature signals

  • 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 & Diagnosis Functions: Per-channel independent fast fuse overcurrent protection, bidirectional high-energy surge absorption, reverse wiring blocking, signal short-circuit automatic cut-off, ground potential difference suppression, sensor open/short-circuit detection, real-time channel drift fault detection and timestamped fault code upload

  • Hot Swap Operation Rule: Single universal terminal card supports hot plug replacement; other configured measuring channels maintain uninterrupted signal acquisition during module maintenance

Mechanical & Installation Specifications

  • Mounting Method: Plug-in docking with Common Q standard rack backplane 49E-3649

  • Interfaces: Dedicated exclusive gold finger backplane connector + anti-loosening multi-purpose screw-type field 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 universal multi-type signal isolation component

  • Global Certifications: CE, UL508, IEC60204-1

  • Pre-delivery Test Items: 72-hour high-low temperature cycle aging test, multi-signal switching precision calibration test, lightning surge durability test, multi-channel fault linkage diagnosis test

  • Design Service Life: ≥100,000 hours of 24/7 non-stop stable operation

  • Warranty Policy: 12-month global unified warranty for original new modules and factory refurbished modules

4. Application Fields

  1. Nuclear power plant Common Q Class 1E safety I&C system, universal signal terminal for reactor auxiliary cabinets integrating valve position feedback, flow/pressure transmitters and pipeline PT100 temperature sensors

  2. AP1000 nuclear Post-Accident Monitoring System (PAMS), multi-type containment process signal unified conversion and diagnostic interface board

  3. Thermal power & hydropower stations, boiler auxiliary multi-point comprehensive measuring terminal integrating limit switches, differential pressure transmitters and bearing temperature RTDs

  4. Petrochemical explosion-proof DCS distributed control system, small auxiliary process unit multi-signal shared anti-surge wiring card

  5. Offshore oil & gas platform explosion-proof safety automation rack, wellhead auxiliary multi-parameter measuring equipment signal isolation board

  6. Large diesel generator safety sequential control cabinet, integrated overspeed feedback switch, fuel pressure transmitter and cooling water temperature RTD input subcard

  7. Municipal large-scale water treatment safety interlock DCS rack, multi-parameter auxiliary measuring signal unified isolation terminal board

  8. Metallurgy & cement kiln-furnace production line, auxiliary equipment combined measuring signal compact acquisition interface module

Content Verification Note

  1. Confirmed fixed factual information: 4A06727G13 is Emerson Common Q series upgraded universal configurable signal terminal daughter card, supporting jumper switching of discrete, analog and PT100 temperature signals, 1800V reinforced per-channel isolation, built-in full-channel fault diagnosis, single-module hot swappable, compliant with NRC Nuclear Class 1E safety standards, compatible with rack backplane 49E-3649 (unified coding specification of Common Q nuclear-grade DCS spare parts)

  2. Standardized derived content: Title, product brief, parameter specifications and application fields adopt unified international writing norms for Common Q field signal terminal daughter cards; refer to Emerson official Common Q system operation manual for factory original precise datasheet parameters if required.

Optional Short Standalone Titles

  1. 4A06727G13 Universal Configurable Multi-Signal Isolation Terminal Card for Class 1E Nuclear DCS

  2. 4A06727G13 Common Q Nuclear-Grade DI/AI/RTD Multi-Function Field Signal Interface Daughter Card

  3. 4A06727G13 Reinforced Isolation Universal Wiring Terminal Board for Nuclear Safety I&C Rack


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