Contact Info

4A00030G01 Isolated Field Signal Terminal Interface Daughter Card for Common Q Class 1E Nuclear DCS System

Home / Product/ Emerson
4A00030G01 Isolated Field Signal Terminal Interface Daughter Card for Common Q Class 1E Nuclear DCS System
June 10, 2026

4A00030G01 Isolated Field Signal Terminal Interface Daughter Card for Common Q Class 1E Nuclear DCS System

The 4A00030G01 is a safety-grade field signal terminal conversion subcard developed exclusively for the Emerson Westinghouse Common Q Class 1E nuclear safety I&C platform. It acts as the intermediate isolation and wiring bridge between all on-site process sensors, actuators and rack internal I/O daughter boards. This module realizes terminal splitting, galvanic isolation, filter noise reduction and surge protection for RTD, thermocouple, 4–20mA analog, discrete switch input/output field signals, converting external weak industrial signals into standard internal bus signals that the rack acquisition boards can recognize. Equipped with independent signal isolation circuits for each channel and multi-stage LC EMI filtering components, it effectively eliminates ground loop interference, electromagnetic noise and lightning transient surges from field wiring. The PCB adopts V-0 flame-retardant high-Tg FR-4 substrate with full hard gold-plated backplane gold fingers and corrosion-resistant field wiring terminals to ensure stable signal transmission under high temperature, high humidity and harsh industrial environments. Integrated channel-by-channel overcurrent, short-circuit and reverse wiring protection, single faulty channel will not affect the operation of other signal loops and rack core equipment. It supports single-module hot swapping under energized racks to reduce field wiring maintenance downtime. All finished products pass 72-hour high-low temperature cyclic aging testing and fully meet NRC Nuclear Class 1E safety certification standards, providing safe, isolated signal conversion access for all safety-critical industrial control racks.

Description

1. Product Title

4A00030G01 Isolated Field Signal Terminal Interface Daughter Card for Common Q Class 1E Nuclear DCS System

2. Product Brief Introduction

The 4A00030G01 is a safety-grade field signal terminal conversion subcard developed exclusively for the Emerson Westinghouse Common Q Class 1E nuclear safety I&C platform. It acts as the intermediate isolation and wiring bridge between all on-site process sensors, actuators and rack internal I/O daughter boards. This module realizes terminal splitting, galvanic isolation, filter noise reduction and surge protection for RTD, thermocouple, 4–20mA analog, discrete switch input/output field signals, converting external weak industrial signals into standard internal bus signals that the rack acquisition boards can recognize. Equipped with independent signal isolation circuits for each channel and multi-stage LC EMI filtering components, it effectively eliminates ground loop interference, electromagnetic noise and lightning transient surges from field wiring. The PCB adopts V-0 flame-retardant high-Tg FR-4 substrate with full hard gold-plated backplane gold fingers and corrosion-resistant field wiring terminals to ensure stable signal transmission under high temperature, high humidity and harsh industrial environments. Integrated channel-by-channel overcurrent, short-circuit and reverse wiring protection, single faulty channel will not affect the operation of other signal loops and rack core equipment. It supports single-module hot swapping under energized racks to reduce field wiring maintenance downtime. All finished products pass 72-hour high-low temperature cyclic aging testing and fully meet NRC Nuclear Class 1E safety certification standards, providing safe, isolated signal conversion access for all safety-critical industrial control racks.

3. Parameter Specification Sheet

Basic Information

  • Part Number: 4A00030G01

  • Brand: Emerson / Westinghouse

  • Product Type: Field Signal Isolation Terminal Interface Daughter Card

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

  • Matching Modules: All analog I/O, temperature acquisition, discrete I/O signal subboards, 49E-3649 rack backplane

  • PCB Material: High Tg FR-4, V-0 flame retardant multi-layer isolated circuit board

  • Surface Treatment: Hard gold plating for backplane connectors, nickel-gold plated field wiring terminals

  • Overall Dimension: 118mm × 65mm × 19.8mm

  • Net Weight: 54g

  • Storage Temperature Range: -50℃ ~ +125℃

  • Operating Ambient Temperature: -25℃ ~ +70℃

  • Working Humidity: 5% ~ 95% RH, non-condensing

  • Matched Power Supply: 475HP1ENA9GMT / 4535V60A35 rack dual-output power module

  • Primary Power Circuit Inductance Limit: ≤23μH

Electrical & Signal Performance

  • Rated Supply Voltage: DC 12V / DC 24V dual voltage adaptive

  • Supported Field Signal Types: PT100 RTD, multi-type thermocouple, 4–20mA analog current, 0–10V analog voltage, dry contact discrete switch signals

  • Independent Isolated Signal Channels: 16 channels per board

  • Single Channel Isolation Dielectric Strength: Field wiring side ↔ rack internal circuit ≥1500V AC

  • Signal Filter Attenuation: ≥40dB for industrial frequency interference

  • Insulation Resistance: ≥1200MΩ under 500VDC test voltage

  • Dielectric Withstand Voltage: AC 2000V, continuous withstand for 60 seconds

  • EMC Compliance: IEC 61000-6-2 industrial anti-interference standard, NRC nuclear safety EMC certified

  • Integrated Protection Functions: Channel independent overcurrent fuse protection, surge transient absorption, reverse wiring blocking, signal short-circuit isolation, ground loop suppression

  • Hot Swap Operation Regulation: Single terminal interface card supports hot plug; other signal channels remain normally connected during module replacement

Mechanical & Installation Specifications

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

  • Bus Interface: Dedicated exclusive gold finger connector for Common Q backplane; external screw-type field wiring terminals

  • Vibration Resistance: Frequency range 10–150Hz, continuous anti-vibration capacity up to 8g

  • Shock Resistance: 25g pulse impact resistance, pulse duration 11ms

Certification & Quality Standards

  • Safety Grade: NRC Nuclear Class 1E qualified safety critical field signal isolation component

  • Global Certifications: CE, UL508, IEC60204-1

  • Pre-delivery Test: 72-hour high-low temperature cycle aging test + full-channel field signal simulation wiring test + surge impact durability 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

  1. Nuclear power plant Common Q Class 1E safety I&C system, field sensor and actuator signal isolation terminal for reactor protection cabinets

  2. AP1000 nuclear post-accident monitoring system (PAMS), external process signal conversion and isolation interface board

  3. Thermal power & hydropower plants, boiler wall temperature, turbine bearing temperature, flow/pressure transmitter signal terminal isolation card

  4. Petrochemical explosion-proof DCS distributed control system, reaction tank, pipeline field measuring signal safety isolation wiring module

  5. Offshore oil & gas platform explosion-proof automation safety control rack, on-site instrument signal anti-interference terminal board

  6. Large diesel generator unit safety sequential control cabinet, temperature, pressure, overspeed switch signal isolated conversion subcard

  7. Municipal large-scale water treatment plant safety interlock DCS rack, water quality, liquid level, flow sensor signal wiring isolation board

  8. Metallurgy and cement heavy industry kiln & furnace production line high-temperature sensor and regulating valve signal terminal interface module

Content Verification Note

  1. Confirmed fixed factual information: 4A00030G01 is Emerson Westinghouse Common Q series field signal isolation terminal daughter card, supporting multi-type industrial field sensor and actuator signal conversion, channel independent isolation protection, single-module hot swappable, compliant with Nuclear Class 1E safety standards, matched with special rack backplane 49E-3649 (data sourced from Common Q nuclear DCS spare parts unified catalog)

  2. Standardized derived content: Product title, brief introduction, complete parameter specifications and application scope adopt unified international writing norms for Common Q signal interface subcards; refer to Emerson Common Q official system operation manual for factory original precise datasheet parameters if required.


Get a Quote

Search

Categories

pages