4D33805G01 Standard 12-Channel Isolated Analog Output Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS_Ningde Androld Automation Equipment Co.,Ltd.

June 10, 2026

4D33805G01 Standard 12-Channel Isolated Analog Output Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS

NRC Class 1E nuclear safety certified, the 4D33805G01 is a compact standard isolated analog output terminal daughter card tailored for Emerson Westinghouse Common Q nuclear safety I&C platform. It converts digital control commands from master control boards into standard 4–20mA DC current and 0–10V DC voltage analog output signals to drive field safety regulating valves, actuator positioners, variable frequency drives and flow adjustment actuators in nuclear auxiliary safety control loops.

Description

4D33805G01 Standard 12-Channel Isolated Analog Output Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS

Product Brief

Each channel is equipped with independent 1500V basic galvanic isolation and multi-stage LC passive EMI filter network, which suppresses power frequency coupled noise, ground loop potential offset and lightning surge transient interference. Equipped with standard hard gold-plated backplane edge connectors and corrosion-resistant nickel screw terminal blocks, this board integrates complete multi-layer per-channel circuit protection, analog output loop open/short-circuit fault diagnosis and full hot-swap function. It supports online module replacement without shutting down safety control loops, adapting to high temperature, high humidity, heavy dust working environments of nuclear auxiliary plants.

Parameter Specifications

Part Number: 4D33805G01
Manufacturer: Emerson Westinghouse
Compatible System: Common Q Class 1E Safety Instrument & Control DCS System
Matching Accessories: Analog output master control boards, 49E-3649 rack backplane, 475HP1ENA9GMT redundant rack power supply
PCB Material: Multi-layer isolated V-0 flame-retardant high-Tg FR-4
Dimension & Weight: 120mm × 66mm × 20.6mm; Net weight: 58g
Ambient Operating Envelope
Operating Temp: -25℃ ~ +70℃
Storage Temp: -50℃ ~ +125℃
Humidity: 5%–95% RH, non-condensing
Power Supply: DC 12V / DC 24V dual adaptive wide-range input
Output Channels: 12 fully independent galvanic isolated analog output channels
Standard Output Signal: 4–20mA DC loop current, 0–10V DC voltage
Isolation Performance
Channel-to-backplane isolation: 1500V AC
Dielectric withstand: 2000V AC / 60s
Insulation resistance: ≥1200MΩ @ 500VDC
EMC Index: Power frequency interference attenuation ≥40dB, compliant with IEC 61000-6-2 industrial EMC standard
Protection & Diagnosis Functions
Per-channel precise current limiting protection
Bidirectional TVS high-energy surge absorption
Reverse polarity miswiring lockout protection
Real-time detection of output loop open-circuit / short-circuit load fault
Time-stamped fault status uploaded to master controller
Mechanical Reliability
Continuous vibration resistance: 8g (10–150Hz)
Shock resistance: 25g pulse, duration 11ms
Core Feature: Single-module hot swappable under energized rack
Certifications: CE, UL508, IEC60204-1, NRC Class 1E nuclear safety qualification
Aging Validation Standard: 72-hour full-load high-low temperature cyclic aging test
Design Service Life: ≥100,000 hours of 24/7 unattended continuous operation
Warranty: 12-month global unified warranty for original & factory refurbished modules

Application Fields

Nuclear Power Plant Common Q Safety I&C Racks
Standard analog drive terminal for reactor auxiliary cabinet cooling water regulating valves, containment air dampers and medium flow actuator positioners.
AP1000 Nuclear Post-Accident Monitoring System (PAMS)
Isolation analog output conversion board for containment auxiliary vent control valves and accident cooling medium adjustment actuators.
Thermal & Hydropower Station Main Control Systems
Compact analog output module for boiler feedwater control valves, combustion air dampers and turbine governor positioners.
Explosion-Proof Petrochemical DCS Distributed Control System
Field drive wiring terminal card for reactor pressure regulating valves, pipeline flow control actuators and storage tank liquid level adjustment valves.
Offshore Oil & Gas Explosion-Proof Automation Racks
Isolation drive interface for wellhead choke valves, medium flow regulators and heating equipment position actuators.
Large Diesel Generator Safety Sequential Control Cabinets
Compact analog output subcard for fuel adjustment actuators, cooling fan inverters and exhaust gas dampers.
Municipal Large-Scale Water Treatment Safety Interlock DCS
Isolation drive terminal for pipeline inlet flow control valves, chemical dosing pump regulators and tank outlet water level actuators.
Metallurgy & Cement Kiln Production Lines
Multi-point analog drive module for kiln air-fuel ratio regulating valves, raw material feeding actuators and flue gas exhaust dampers.

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